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CVD Prevention in American Indian & American Indian & Alaska Native Alaska Native Communities: Communities: Opportunities and Opportunities and Challenges for the 21 Challenges for the 21 st st Century Century Thomas K. Welty, MD, MPH Thomas K. Welty, MD, MPH Retired USPHS Retired USPHS Investigator, Investigator, Strong Heart Study Strong Heart Study

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Page 1: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CVD Prevention in American CVD Prevention in American Indian & Alaska Native Indian & Alaska Native

Communities:Communities:Opportunities and Challenges Opportunities and Challenges

for the 21for the 21stst Century Century

Thomas K. Welty, MD, MPHThomas K. Welty, MD, MPH

Retired USPHSRetired USPHS

Investigator,Investigator,

Strong Heart StudyStrong Heart Study

Page 2: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Acknowledgments:

Drs. James Galloway, Lyle Best, Barbara Howard & Dorothy Rhoades

For sharing their slides

http://strongheart.ouhsc.edu/

National Health Lung and Blood Institute>

13 Strong Heart Study tribesSHS investigators & coordinators

Page 3: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

SHS: WHAT WAS THE GOAL?SHS: WHAT WAS THE GOAL?

Is CVD an important public health Is CVD an important public health problem in Indian communities?problem in Indian communities?

How does it compare with non-How does it compare with non-Indian communities?Indian communities?

Do the prevalences of risk factors Do the prevalences of risk factors differ? differ?

Do the risk factors work the Do the risk factors work the same? same?

Can this kind of research be done Can this kind of research be done in Indian country? in Indian country?

Page 4: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Strong Heart Study Population

Ak-ChinPhoenix

Salt River Indian Community

ARIZONA

Gila RiverIndianCommunity

Oklahoma City

AnandarkoLawton

OKLAHOMA

NORTH DAKOTA

SOUTH DAKOTA

Rapid CityPine Ridge

Oglala

Cheyenne RiverEagle Butte

Bismarck

Spirit Lake

Ak-Chin

4549 American Indians ages 45-74 years

Arizona: Pima/Maricopa/Papago in the Gila River, Salt River, and Ak-Chin Indian communities

Oklahoma: Apache, Caddo, Comanche, Delaware, Fort Sill Apache, Kiowa, and Wichita

South/North Dakota: Oglala Sioux and Cheyenne River Sioux (SD) and the Spirit Lake Tribe in the Fort Totten area (ND)

Page 5: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Strong Heart Study1988-2003

• Community Mortality Study 35–74-year-old men and women

Deaths between 1984 and 1994Medical record review of all possible CVD

deaths

∙ Physical Examinations of Cohort1989-91, 1993-5 and 1998-9ECG, Cardiac and Carotid ECHOBP and other measurementsBlood, urine and DNA samplesMedical, diet and medication history

Page 6: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Strong Heart Study1988-2003

• Cohort SurveillanceYearly contactMedical record review for all cause and CVD Mortality and nonfatal CVD

• Family Study120 families of 30 members eachExamination similar to that of cohortGenetic mapping for CVD risk factors

Page 7: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Community InvolvementCommunity InvolvementThe Key to the Success of SHSThe Key to the Success of SHS

Study design and implementationStudy design and implementation

American Indian investigators and staffAmerican Indian investigators and staff

Participants referred for medical careParticipants referred for medical care

Data used for community health initiativesData used for community health initiatives

Education of community youthEducation of community youth

Participation in community health Participation in community health initiativesinitiatives

Page 8: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

STRONG HEART STUDYSTRONG HEART STUDY

Heart disease Heart disease isis a major a major public health problem!!public health problem!!

Some risk factors higher, Some risk factors higher, some lower-varies by regionsome lower-varies by region

Strength of risk factors differsStrength of risk factors differs

““Cutting edge” medical Cutting edge” medical research research cancan be done in be done in Indian country Indian country GOALS MET!!!

Page 9: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Lyle Best, MD Linda Cowan, PhD Richard Devereux, MD Richard Fabsitz, PhD James M. Galloway, MD Jeffrey Henderson, MD Barbara Howard, MD Wm. James Howard, MD David Kaufman, PhD Elisa Lee, PhD Sandra Laston, PhD

The Strong Heart StudyInvestigators

Kari North, PhD Jean MacCluer, PhD Helaine Resnick, PhD Everett Rhoades, MD Marie Russell, MD Maurice Sievers, MD Jason Umans, MD, PhD Thomas Welty, MD Fawn Yeh, PhD Jeunliang L. Yeh, PhD Ellie Zephier, RD

Page 10: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Marcia O’Leary, BSN Lillian Brown Cherie Kessler Daniel Kougl Wendy Lawrence, BSN Lavonne Looking Elk Francine Red Willow, BSN Tauqeer Ali, PhD

The Strong Heart StudyField Staff

Karen Kimberly Linda Poolaw Stephanie Gomez Betty Jarvis, BSN Bert Lewis Rosinna Briones Mary Rybka Nanette Oram

Page 11: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CVD PreventionCVD Prevention

CVD Morbidity and MortalityCVD Morbidity and Mortality

CVD Risk FactorsCVD Risk Factors

Primordial PreventionPrimordial Prevention

Primary PreventionPrimary Prevention

Secondary PreventionSecondary Prevention

ConclusionsConclusions

Page 12: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CVDCVDMORBIDITYMORBIDITY

ANDANDMORTALITYMORTALITY

Page 13: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

SHS CVD MORBIDITYSHS CVD MORBIDITY

Cardiac and carotid artery echo studiesCardiac and carotid artery echo studiesEKGEKGReview of health care for heart disease Review of health care for heart disease and strokeand strokeMorbidity Committee:Morbidity Committee:Drs. R. Devereux, L. Best, M. Russell, Drs. R. Devereux, L. Best, M. Russell, R. Rodeheffer, J. Kizer, J. Bella,R. Rodeheffer, J. Kizer, J. Bella,Stroke: Drs. D. Wiebers, J. WhisnantStroke: Drs. D. Wiebers, J. Whisnant

Page 14: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Roman MJ, et al. Circulation 1998;98Roman MJ, et al. Circulation 1998;98

Carotid Atherosclerosis Carotid Atherosclerosis in American Indiansin American Indians

0

20

40

60

80

100

45-49 50-54 55-59 60-64 65-69 70-74 75-79Years

pla

que p

revale

nce

ARIC SHS CHS

ARIC = Atherosclerosis at Risk StudySHS = Strong Heart StudyCHS = Cardiovascular Health Study

Page 15: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

INCIDENCE OF CHDINCIDENCE OF CHDStrong Heart Study vs ARICStrong Heart Study vs ARIC

0

4

8

12

16

20

Women Men

ARIC, Aged 45 to 64 SHS, Aged 45 - 64

CHD includes fatal and nonfatal events plus revascularizationFatal and Nonfatal Rates per 1000 person years. The Rising Tide of CVD in AI: The SHS, Circulation, 1999

Page 16: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Age and Misclassification-adjusted CVD Mortality Rates By Population

150

160

170

180

190

200

'92-'94 '94-'96

Year

Adj. AIANUS All RacesUS WhiteAIAN

D. Rhoades. Circulation 2005;111:1250-1256

Rat

e pe

r 100

,000

Page 17: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Native American Cardiac MortalityNative American Cardiac MortalityBy IHS Area, 1994 - 1996By IHS Area, 1994 - 1996

per 100,000; age-adjusted; Regional Differences in Indian Health - 1998-99; US All Races 138.3

156

229.7

151.6

85.1

287

206.4

129.3

190.4

105.7

163.6

145.9

140.9

137.5

Total All Areas

Aberdeen

Alaska

Albuquerque

Bemidji

Billings

California

Nashville

Navajo

Oklahoma

Phoenix

Portland

Tucson

0 50 100 150 200 250 300

Page 18: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

SHS MORTALITYSHS MORTALITY

4549 participants (age 45-74 in 1989-91) 4549 participants (age 45-74 in 1989-91) 1691 (37%) deaths reviewed by May 20051691 (37%) deaths reviewed by May 2005530 (31%) died of CVD 530 (31%) died of CVD Each death reviewed by Dr. Mauri SieversEach death reviewed by Dr. Mauri SieversSecond review: Drs. E. Rhoades, D. Rhoades, Second review: Drs. E. Rhoades, D. Rhoades, J. Henderson, J. Galloway, T. WeltyJ. Henderson, J. Galloway, T. WeltyAdjudicate when the cause differs:Adjudicate when the cause differs:Dr. J. HowardDr. J. HowardStroke: Drs. D. Wiebers, J. Whisnant Stroke: Drs. D. Wiebers, J. Whisnant

Page 19: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Stroke in Native AmericansStroke in Native Americans

Limitations:Limitations:

Limited DataLimited Data

Wide Variations among TribesWide Variations among Tribes

Racial MisclassificationRacial Misclassification

Strong Heart Study analyses in progressStrong Heart Study analyses in progress

Page 20: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Stroke Mortality for American Indians Stroke Mortality for American Indians and Alaska Natives, 1992-96and Alaska Natives, 1992-96

Total Alaska East Northern Plains

Pacific Coast

Southwest

0

5

10

15

20

25

30

35

40

45

50

Rates per 100,000, NCHS; age-adjusted and adjusted for racial misclassificationUS All-Races rate (1994) Rate significantly different from US

rate*

**

*

Page 21: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CVD CVD RISKRISK

FACTORS FACTORS

Page 22: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Zephier, et al. Arch Peds & Adolescent Zephier, et al. Arch Peds & Adolescent Med In press 2005Med In press 2005

AMERICAN INDIAN CHILDHOOD AMERICAN INDIAN CHILDHOOD OBESITY AND OVERWEIGHT OBESITY AND OVERWEIGHT

Are high and increasingAre high and increasing

At age 5, 47% of boys and 40% of girls are At age 5, 47% of boys and 40% of girls are overweight; 24% of boys and girls are overweight; 24% of boys and girls are obese in the Northern Plainsobese in the Northern Plains

Increasing over 7 % per decadeIncreasing over 7 % per decade

Page 23: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CVD RISK FACTORSCVD RISK FACTORSUS ALL RACES & AMERICAN INDIAN WOMEN AGES 45-US ALL RACES & AMERICAN INDIAN WOMEN AGES 45-

7474NHANES III 1988-91; STRONG HEART STUDY 1989-91NHANES III 1988-91; STRONG HEART STUDY 1989-91

CHOL>239=TOTAL CHOLESTEROL>=240MG/DL SMOKING=CURRENTLY SMOKING CIGARETTESHTN=SBP>=140 OR DBP>=90 OR TAKING ANTIHYPERTENSIVE MEDSOVERWT=BODY MASS INDEX>=27.3 BINGE=5 OR MORE DRINKS ON OCCASION IN LAST YEARWelty, et al Am J. Epidemiol 1995

3438

23

44

15

89

43

13

80

71

24

13

43

32

71

42

1416

28

45

66

46

25

0

10

20

30

40

50

60

70

80

90

CHOL>239 HTN SMOKING OVERWT DIABETES ALCOHOLBINGE

WOMEN 45-74 YEARS OF AGE

PE

RC

EN

T

US AZ INDIANS OK INDIANS SD/ND INDIANS

Page 24: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CVD RISK FACTORSCVD RISK FACTORSUS ALL RACES & AMERICAN INDIAN MEN AGES 45-74US ALL RACES & AMERICAN INDIAN MEN AGES 45-74NHANES III 1988-91; STRONG HEART STUDY 1989-91NHANES III 1988-91; STRONG HEART STUDY 1989-91

CHOL>239=TOTAL CHOLESTEROL>=240MG/DL SMOKING=CURRENTLY SMOKING CIGARETTESHTN=SBP>=140 OR DBP>=90 OR TAKING ANTIHYPERTENSIVE MEDSOVERWT=BODY MASS INDEX>=27.3 BINGE=5 OR MORE DRINKS ON OCCASION IN LAST YEARWelty, et al Am J. Epidemiol 1995

28

43

26

38

1115

5

44

30

6765

51

9

47

37

65

3633

11

27

53 54

32

50

0

10

20

30

40

50

60

70

80

CHOL>239 HTN SMOKING OVERWT DIABETES ALCOHOLBINGE

MEN 45-74 YEARS OF AGE

PE

RC

EN

T

US AZ INDIANS OK INDIANS SD/ND INDIANS

Page 25: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Welty TK, et al Ann Epi 2002:12Welty TK, et al Ann Epi 2002:12

Changes in CVD Risk Factors:Changes in CVD Risk Factors: American Indians Over a 4 Year Period American Indians Over a 4 Year Period

The Strong Heart StudyThe Strong Heart Study

Diabetes increased by 6 - 12% in all centersDiabetes increased by 6 - 12% in all centers Prevalence of HTN increased overall by 7 - 9%Prevalence of HTN increased overall by 7 - 9%

Albuminuria increased by 5 - 9% overall.Albuminuria increased by 5 - 9% overall.

Changes in LDL cholesterol inconsistentChanges in LDL cholesterol inconsistent

HDL decreased by more than 9%HDL decreased by more than 9%

Weight decreased for those with DM (mean 1.9 kg), Weight decreased for those with DM (mean 1.9 kg), increased for those with NGT (mean increase 1.4 kg) increased for those with NGT (mean increase 1.4 kg)

Smoking prevalence decreased significantly in women Smoking prevalence decreased significantly in women

Page 26: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Lee ET, et. al Diab Care 2002:25(1) WLee ET, et. al Diab Care 2002:25(1) Welty TK, et al Ann Epi 2002:12elty TK, et al Ann Epi 2002:12

DIABETES INCIDENCEDIABETES INCIDENCE American Indians Over a 4 Year PeriodAmerican Indians Over a 4 Year Period

The Strong Heart StudyThe Strong Heart StudyOverall 19.6% (4.9% per year)Overall 19.6% (4.9% per year)Those with impaired glucose tolerance (IGT) at Those with impaired glucose tolerance (IGT) at higher risk developing DM:higher risk developing DM:37.2% developed DM and gained 1.1 kg37.2% developed DM and gained 1.1 kg35.2 % remained in IGT category and their wt. 35.2 % remained in IGT category and their wt. did not changedid not change 27.6% reverted to normal glucose tolerance and 27.6% reverted to normal glucose tolerance and they lost 1.0 kgthey lost 1.0 kg

Page 27: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

DM and CVD among Native DM and CVD among Native AmericansAmericans

What can we do?What can we do?

Page 28: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

ABCs OF CVD PREVENTIONABCs OF CVD PREVENTION

A = A healthier community = A = A healthier community =

Primordial preventionPrimordial prevention

B = Be healthy =B = Be healthy =Primary preventionPrimary prevention

C = Control =C = Control =Secondary preventionSecondary prevention

Page 29: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

ABCs FOR DIABETESABCs FOR DIABETES

A = A1c hemoglobin measures glucose A = A1c hemoglobin measures glucose controlcontrol

B = Blood pressureB = Blood pressure

C = CholesterolC = Cholesterol

Page 30: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

A HEALTHIER COMMUNITY

“THE HEALTH OF AN INDIVIDUALIS DETERMINED BY THE HEALTH

OF THE FAMILY AND COMMUNITY”Warne D. Native Visions, KAET TV May 11, 2005

Page 31: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Primordial PreventionPrimordial Prevention

• Focus on our youthFocus on our youth• Healthy school lunchesHealthy school lunches• Get the soda pop out of schools and health care Get the soda pop out of schools and health care

facilitiesfacilities• Get physical education back in schoolsGet physical education back in schools• Environment conducive to walking or jogging-dog Environment conducive to walking or jogging-dog

control, school facilities open to the communitycontrol, school facilities open to the community• Just Move It ProgramJust Move It Program• Smoke-free facilities/meetings/homesSmoke-free facilities/meetings/homes• Tribal/community leaders & providers as role models-Tribal/community leaders & providers as role models-

Sally Smith and Tex HallSally Smith and Tex Hall

Page 32: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

““Acknowledging that obesity is epidemic Acknowledging that obesity is epidemic among New York City schoolchildrenamong New York City schoolchildren,,

the NYC Education Department is: the NYC Education Department is:

- reducing the fat content in the- reducing the fat content in the 800,000 meals it serves daily and 800,000 meals it serves daily and

- banning candy, soda and other - banning candy, soda and other sugary snacks from school vendingsugary snacks from school vending machines.”machines.”

Page 33: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

BE HEALTHY

Page 34: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Prev Med supp Dec 2003 Prev Med supp Dec 2003

PATHWAYS STUDY OF PREVENTION OF PATHWAYS STUDY OF PREVENTION OF OBESITY IN AMERICAN INDIAN OBESITY IN AMERICAN INDIAN

CHILDRENCHILDREN

Feasibility 1993-96; Intervention 96-2000Feasibility 1993-96; Intervention 96-2000School-based randomized trial-41 schoolsSchool-based randomized trial-41 schools1704 3d to 51704 3d to 5thth grade students grade studentsImprovement in intervention schools:Improvement in intervention schools:Knowledge, attitudes, and behaviorsKnowledge, attitudes, and behaviorsHealthy foods in schoolsHealthy foods in schoolsParental involvementParental involvementPhysical activity at 3 of 4 sitesPhysical activity at 3 of 4 sitesNo difference in % body fatNo difference in % body fat

Page 35: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Promising Interventions for Promising Interventions for Childhood Obesity PreventionChildhood Obesity Prevention

Involve family, friends, and the entire Involve family, friends, and the entire community – primordial preventioncommunity – primordial prevention

Further research with preschool & head Further research with preschool & head start students and antenatal patientsstart students and antenatal patients

Pathways curriculum available at Pathways curriculum available at http://hsc.unm.edu/pathwayshttp://hsc.unm.edu/pathways

Page 36: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Welty IHS Primary Care Provider 1989Welty IHS Primary Care Provider 1989

INDIAN SPECIFIC HEALTH RISK INDIAN SPECIFIC HEALTH RISK APPRAISALAPPRAISAL

Developed by AAIHS in 1988 in Developed by AAIHS in 1988 in collaboration with CDC and Carter Centercollaboration with CDC and Carter CenterProvided feed back to Strong Heart Study Provided feed back to Strong Heart Study participants on how to reduce health risksparticipants on how to reduce health risksNeeds to be updated, integrated with Needs to be updated, integrated with RPMS, and effectiveness evaluatedRPMS, and effectiveness evaluatedUseful for brief clinical interventions by Useful for brief clinical interventions by providersproviders

Page 37: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

RISK FACTOR KNOWLEDGERISK FACTOR KNOWLEDGESTRONG HEART STUDYSTRONG HEART STUDY

Knowledge of 9 CVD risk factors ranged from 71 Knowledge of 9 CVD risk factors ranged from 71 to 90 % among 3226 participantsto 90 % among 3226 participantsThose with hypertension and diabetes more Those with hypertension and diabetes more likely to have knowledge of CVD risk factors. likely to have knowledge of CVD risk factors. Men, smokers, and those with less education Men, smokers, and those with less education had less knowledge. had less knowledge. Targeted educational programs needed to raise Targeted educational programs needed to raise awareness of CVD risk factors.awareness of CVD risk factors.Knowledge needs to lead to behavior change.Knowledge needs to lead to behavior change.

Scheweigman, et al, Submitted to Ethnicity & Disease 2005Scheweigman, et al, Submitted to Ethnicity & Disease 2005

Page 38: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Lee, et al. Poster 2005Lee, et al. Poster 2005

PREDICTION OF CHDPREDICTION OF CHDSTRONG HEART STUDY MODELSTRONG HEART STUDY MODEL

AgeAgeGenderGenderCholesterol (total, LDL, and HDL)Cholesterol (total, LDL, and HDL)DiabetesDiabetesHypertensionHypertensionSmokingSmokingAlbuminuriaAlbuminuria

Calculates risk of CHD in 10 years Calculates risk of CHD in 10 years Future integration into RPMSFuture integration into RPMS

Page 39: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

The Diabetes Prevention Program:The Diabetes Prevention Program:Reduction in the incidence of Type 2 DM Reduction in the incidence of Type 2 DM

with lifestyle or metforminwith lifestyle or metformin

• 3234 adults at high risk for diabetes 3234 adults at high risk for diabetes - Randomized to 3 groups:Randomized to 3 groups:

Standard lifestyle recommendations + Standard lifestyle recommendations + placeboplacebo

Standard lifestyle recommendations + Standard lifestyle recommendations + metformin (850 BID)metformin (850 BID)

Intensive lifestyle modificationIntensive lifestyle modification– Goal: at least 7% weight reduction and 150 Goal: at least 7% weight reduction and 150

minutes of exercise weeklyminutes of exercise weeklyDPP Research Group, NEJM 346:393-403,2002DPP Research Group, NEJM 346:393-403,2002

Page 40: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

The Diabetes Prevention Program:The Diabetes Prevention Program:Reduction in the incidence of Type 2 DM Reduction in the incidence of Type 2 DM

with lifestyle or metforminwith lifestyle or metformin

Enrollment Criteria:Enrollment Criteria:• BMI of 24 or greaterBMI of 24 or greater• Fasting serum glucose of 95 to 125 mg/dLFasting serum glucose of 95 to 125 mg/dL• Plasma glucose of 140 to 199 mg/dL two Plasma glucose of 140 to 199 mg/dL two

hours after oral glucose loadhours after oral glucose load

• Average follow up of over 2.8 years Average follow up of over 2.8 years

DPP Research Group, NEJM 346:393-403,2002DPP Research Group, NEJM 346:393-403,2002

Page 41: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

The Diabetes Prevention Program:The Diabetes Prevention Program: Lifestyle InterventionLifestyle Intervention

• 16 session core curriculum (over 24 weeks) 16 session core curriculum (over 24 weeks)

• Long-term maintenance programLong-term maintenance program

• Supervised by a case managerSupervised by a case manager

• Access to lifestyle support staffAccess to lifestyle support staff

• DietitianDietitian

• Behavior counselorBehavior counselor

• Exercise specialistExercise specialist

DPP Research Group, NEJM 346:393-403,2002DPP Research Group, NEJM 346:393-403,2002

Page 42: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

The Diabetes Prevention Program:The Diabetes Prevention Program: Lifestyle Intervention: Physical Activity ResultsLifestyle Intervention: Physical Activity Results

• 74% of volunteers assigned to intensive lifestyle 74% of volunteers assigned to intensive lifestyle achieved the study goal of achieved the study goal of >> 150 minutes of 150 minutes of activity per week at 24 weeksactivity per week at 24 weeks

• Promote physical activity addictionPromote physical activity addiction• How can we achieve this in Native communities?How can we achieve this in Native communities?• IHS standards for prediabetes releasedIHS standards for prediabetes released

DPP Research Group, NEJM 346:393-403,2002DPP Research Group, NEJM 346:393-403,2002

Page 43: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

0 1 2 3 4

0

10

20

30

40Placebo (n=1082)Metformin (n=1073, p<0.001 vs. Plac)Lifestyle (n=1079, p<0.001 vs. Met , p<0.001 vs. Plac )

Percent developing diabetes

All participants

All participants

Years from randomization

Cum

ulat

ive

inci

denc

e (%

)

Risk reduction31% by metformin58% by lifestyle

The DPP Research Group, NEJM 346:393-403, 2002

Page 44: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

SHS DIETARY STUDIESSHS DIETARY STUDIES

Phase I: 24 hour recall – Higher intake of Phase I: 24 hour recall – Higher intake of fats and cholesterol than NHANES, diets fats and cholesterol than NHANES, diets at high risk of increasing risk of chronic at high risk of increasing risk of chronic diseasedisease

Phase II: 24 hour recall-Intake of most Phase II: 24 hour recall-Intake of most vitamins lower than NHANESvitamins lower than NHANES

Healthy foods need to be more available Healthy foods need to be more available and affordableand affordable

Zephier EM, et al. Prev. Med 1997Stang J, et al. Submitted JADA 2005

Page 45: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Primary Prevention of DM & Primary Prevention of DM & CVD Among Native AmericansCVD Among Native Americans

Community DevelopedCommunity Developed Community ImplementedCommunity Implemented Community IntegratedCommunity Integrated Supported by Providers and Public HealthSupported by Providers and Public Health Individual, Provider and Community FocusIndividual, Provider and Community Focus

Page 46: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

SMOKING CESSATIONSMOKING CESSATIONAmerican Indians Over a 4 Year PeriodAmerican Indians Over a 4 Year Period

The Strong Heart StudyThe Strong Heart Study

• 21 % of smokers quit, a high spontaneous 21 % of smokers quit, a high spontaneous cessation rate. cessation rate.

Usual quit rates:Usual quit rates:• Spontaneous ~ 15% Spontaneous ~ 15% • Post intervention ~ 15-25%. Post intervention ~ 15-25%. Older people, those who smoked less and Older people, those who smoked less and

started at an older age, and those with DM started at an older age, and those with DM more likely to quitmore likely to quit

Primary prevention is priorityPrimary prevention is priority

Henderson PN, et.al. Ethn Dis. 2004;14(2)Henderson PN, et.al. Ethn Dis. 2004;14(2)

Page 47: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CONTROL BP, LIPIDS, GLUCOSEIN PERSONS WITH DM OR CHD

Page 48: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

SANDS: SANDS: STOP ANTHEROSCLEROSIS IN NATIVE STOP ANTHEROSCLEROSIS IN NATIVE

DIABETICSDIABETICS

Will lowering LDL cholesterol and blood Will lowering LDL cholesterol and blood pressure to lower targets than are currently pressure to lower targets than are currently recommended retard CVD?recommended retard CVD?

ControlControl InterventionIntervention

LDL chol (mg/dl)LDL chol (mg/dl) <100 <100 <70 <70

SBPSBP (mm)(mm) 130/80 130/80 115/75 115/75

Ultrasound measures plaque in carotid arteryUltrasound measures plaque in carotid artery

Page 49: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Howard, et al Arterioscler Thromb Vasc Howard, et al Arterioscler Thromb Vasc Biol; 20: 2000Biol; 20: 2000

LDL CHOLESTEROL A STRONG LDL CHOLESTEROL A STRONG PREDICTOR OF CHD IN SHS PREDICTOR OF CHD IN SHS

PARTICIPANTS WITH DMPARTICIPANTS WITH DM

Mean LDL cholesterol levels lower Mean LDL cholesterol levels lower American Indians with diabetes than those American Indians with diabetes than those without.without.

LDL cholesterol remains a strong CVD risk LDL cholesterol remains a strong CVD risk factor in persons with diabetes even at low factor in persons with diabetes even at low level. level.

Page 50: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Fonarow GC, et al Am J Cardiol. 2001 AFonarow GC, et al Am J Cardiol. 2001 Apr 1;87(7):819-22pr 1;87(7):819-22

Cumulative Impact of Four CV Cumulative Impact of Four CV Protective Medications Post MIProtective Medications Post MI

Relative-riskRelative-risk 5yr CV event rate5yr CV event rate

None None ---- 20%20%

AspirinAspirin ▼▼25%25% 15%15%

Beta blockerBeta blocker ▼▼25%25% 11.3%11.3%

ACE inhibitorACE inhibitor ▼▼25%25% 8.4%8.4%

StatinStatin ▼▼30%30% 5.9%5.9%

Cumulative risk reduction if all four medications are used = 70%

Page 51: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

Despite compelling Despite compelling scientific evidencescientific evidence

and national treatment guidelines for and national treatment guidelines for the prevention and treatment of the prevention and treatment of

diabetes & CVD, diabetes & CVD, prevention efforts continue to be prevention efforts continue to be

underutilized… underutilized…

Page 52: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

What can we do?What can we do?

Cultural SensitivityCultural SensitivityCultural HumilityCultural HumilityCultural AppropriatenessCultural Appropriateness

We need the ability to translate this We need the ability to translate this excellent science into changes in excellent science into changes in community understanding, cultural community understanding, cultural perceptions and individual lifestyles. perceptions and individual lifestyles.

What MUST we do?

Page 53: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

American Heart AssociationAmerican Heart AssociationIndian Health ServiceIndian Health Service

Get With Get With

The Guidelines The Guidelines

ProgramProgram

Page 54: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

EXPENSIVE HIGH TECHEXPENSIVE HIGH TECHLIFE SAVING TREATMENTLIFE SAVING TREATMENT

Coronary Artery Bypass SurgeryCoronary Artery Bypass Surgery

Cardiac TransplantCardiac Transplant

Dialysis and Kidney TransplantDialysis and Kidney Transplant

Need for these interventions can be reduced Need for these interventions can be reduced by primordial, primary and secondary by primordial, primary and secondary prevention.prevention.

Page 55: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

OVERCOME FATALISMOVERCOME FATALISM

FatalismFatalism

I will get diabetesI will get diabetes

Can do nothing about itCan do nothing about it

Can’t prevent diabetesCan’t prevent diabetes

Talking Circle Intervention reduced fatalism Talking Circle Intervention reduced fatalism compared to controlscompared to controls

Dr. Felicia Hodge and Lorelei Decora, RN have Dr. Felicia Hodge and Lorelei Decora, RN have spearheaded this intervention.spearheaded this intervention.

Both primary and secondary preventionBoth primary and secondary prevention

Page 56: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

ABCs OF CVD PREVENTIONABCs OF CVD PREVENTION

A = A healthier community = A = A healthier community =

Primordial preventionPrimordial prevention

B = Be healthy =B = Be healthy =Primary preventionPrimary prevention

C = Control =C = Control =Secondary preventionSecondary prevention

Page 57: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

HIV/AIDS IN AFRICA SIMILARHIV/AIDS IN AFRICA SIMILARTO DM/CVD IN NATIVE PEOPLETO DM/CVD IN NATIVE PEOPLE

Both are devastating epidemicsBoth are devastating epidemics

Both are preventable by behavior changeBoth are preventable by behavior change

Both are chronic diseases – require lifelong RXBoth are chronic diseases – require lifelong RX

For HIV/AIDS successful prevention has reduced For HIV/AIDS successful prevention has reduced HIV seroprevalence in Uganda from 30% to <10%HIV seroprevalence in Uganda from 30% to <10%

A = Abstinence A = Abstinence

B = Be Faithful B = Be Faithful

C = CondomsC = Condoms

Page 58: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

LEADERSHIP IS A KEY FACTORLEADERSHIP IS A KEY FACTOR

President Museveni of Uganda since 1986 President Museveni of Uganda since 1986 has played a key role in reducing HIV/AIDS has played a key role in reducing HIV/AIDS

““When there is a lion in the village, you When there is a lion in the village, you don’t whisper.” You shout to warn people.don’t whisper.” You shout to warn people.

Which Tribe/Native community will be the Which Tribe/Native community will be the first to reduce obesity, DM and CVD? first to reduce obesity, DM and CVD?

Can effective preventive solutions be Can effective preventive solutions be replicated in Native communities? replicated in Native communities?

Page 59: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

RESOURCES FOR PREVENTIONRESOURCES FOR PREVENTION

Diabetes Prevention Grants for TribesDiabetes Prevention Grants for Tribes

Funding needed for CVD prevention Funding needed for CVD prevention – Tex Hall, President of NCAI, supportiveTex Hall, President of NCAI, supportive

Tribal/community and provider coalitions are Tribal/community and provider coalitions are necessary to develop comprehensive preventive necessary to develop comprehensive preventive programs and obtain fundingprograms and obtain funding

Interventions tailored to common risk factorsInterventions tailored to common risk factors

Prevention research-CDC/NIH funds availablePrevention research-CDC/NIH funds available

Page 60: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CONCLUSIONSCONCLUSIONS

Research in Native communities has led to Research in Native communities has led to knowledge that helps to define health problems knowledge that helps to define health problems and to identify interventions that can lead to and to identify interventions that can lead to improved health.improved health.

Translation of research findings into practical Translation of research findings into practical preventive and clinical interventions must preventive and clinical interventions must accelerate and receive financial support. accelerate and receive financial support.

Individuals and communities must overcome Individuals and communities must overcome fatalism to succeed in reducing DM and CVD.fatalism to succeed in reducing DM and CVD.

Page 61: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

CONCLUSIONS (CONT)CONCLUSIONS (CONT)

Comprehensive, culturally appropriate, Comprehensive, culturally appropriate, preventive interventions for communities and preventive interventions for communities and families have the greatest chance of success.families have the greatest chance of success.Tribal/community, clinical, and national Tribal/community, clinical, and national leadership and governmental financial support leadership and governmental financial support are essential.are essential.Further research is needed to determine which Further research is needed to determine which preventive interventions are most effective.preventive interventions are most effective.Successful interventions need to be replicated.Successful interventions need to be replicated.Ongoing surveillance of obesity, DM, and CVD is Ongoing surveillance of obesity, DM, and CVD is essential to assess the impact of prevention.essential to assess the impact of prevention.

Page 62: CVD Prevention in American Indian & Alaska Native Communities: Opportunities and Challenges for the 21 st Century Thomas K. Welty, MD, MPH Retired USPHS

TOGETHER WE TOGETHER WE CAN DO ITCAN DO IT