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اصول درمان هیپرتانسیون یا بیماری
پر فشاری خونDR. SHAHRZAD SHAHIDI
PROFESSOR OF NEPHROLOGY
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THE ALMIGHTYPardons & Grants me heaven
Even if I don't know a single letter about:
Crutz Feld Jacob’s Disease
Tsutsugamushi Fever
Crigler-Najjar Syndrome
South American equine encephalitis &
Many & much more rarer topics
BUT …….
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Will drag me to hell and will not pardon
My ignorance of even the minute details of HTN
My indifference to apply the current knowledge
My negligence in screening for HTN, TOD
My despondency about preventing TOD
My inadequacy in maintaining my patients
as normo-tensive as possible –
(This is applicable to all common diseases)
THE ALMIGHTY
RESULTS OF BP SCREENINGS
Recheck in 2 yrs if nml
Recheck in 1 yr if Pre–HTN
Stage 1 - Confirm in 2 mos
Stage 2 - Confirm in 1 mo
If > 180 / 110, treat now
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GOALS OF THERAPY
Reduce CVD & renal morbidity & mortality.
Achieve SBP goal especially in persons >50 years of age.
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PATIENT EVALUATIONEvaluation of patients with documented HTN has three
objectives:1. Assess lifestyle and identify other CV risk factors or
concomitant disorders that affects prognosis and guides treatment.
2. Reveal identifiable causes of high BP.
3. Assess the presence or absence of target organ damage and CVD.
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LABORATORY TESTS
Routine Tests ECG Urinalysis Blood glucose, & hematocrit Serum K, Cr, or the corresponding estimated GFR, Ca Lipid profile, after 9- to 12-hour fast, that includes HDL & LDL
& TG Optional tests Measurement of urinary albumin excretion or Alb/Cr ratio More extensive testing for identifiable causes is not
generally indicated unless BP control is not achieved
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LIFESTYLE MODIFICATION:EFFECT ON BP
Modification Approximate SBP reduction(range)
Weight reduction 5 –20 mmHg/10 kg weight loss
Dietary sodium reduction 2–8 mmHg
Physical Activity 4–9 mmHg
Moderation of alcohol consumption
2–4 mmHg
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BETA-BLOCKERS
• Are not a preferred initial therapy for HTN.
• May be considered in younger people, particularly:
• Intolerance or contraindication to ACEI & ARB• Women of child-bearing potential• People with evidence of increased sympathetic drive
• If therapy is initiated with a beta-blocker & a second drug is required, add a calcium-channel blocker rather than a thiazide-like diuretic to reduce the person’s risk of developing DM.
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DIURETICS
• When using further diuretic therapy for resistant HTN:
Monitor blood Na, K & renal function within 1 month & repeat as required
thereafter.
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FOR ADEQUATE CONTROL OF B.P.
Do you think we can control most of the
patients of HTN with: One drugTwo drugsThree drugsCan’t control
In most of the patients Two drugs are required for adequate control
More so if the initial BP is 20/10 above the goal
2/3 of patients with HTN will
need at least 2 medicines for
BP control
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HTN – Why Combinations ?
If goal BP is not achieved by a single drug in full dose
Then adding another agent will help achieve the goal BP
Two agents sometimes nullify each others side effects
Fixed dose combinations will reduce the no. of tablets
Once daily formulations are good for compliance
Sustained release or LA formulations for 24 h BP control
If 3 drugs can’t achieve goal BP : Resistant HTN
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2013 ESH/ESC Guidelines for the management of HTN
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• Green continuous : preferred combinations• Green dashed: useful combination • Black dashed lines: possible but less well tested combinations• Red : not recommended combination.
In patients with resistant HTN, adding drugs to drugs should be
done with attention to results & any compound overtly ineffective or
minimally effective should be replaced, rather than retained in an
automatic step-up multiple-drug approach
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Osterberg, L. et al. N Engl J Med 2005
Adherence to Medication According to
Frequency of Doses
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PEARLSFor resistant HTN – sit down & take a good Hx:
• How much water, coffee, milk, juice, tea, ice – anything liquid do you drink daily.
• Food preferences & salt intake• Drugs/Alcohol• Compliance
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CAUSES OF RESISTANT HTN Improper BP measurement Excess Na intake Inadequate diuretic therapy Medication
• Inadequate doses
• Drug actions & interactions: NSAIDs, illicit drugs, sympathomimetics, OCP
• OTC drugs & herbal supplements Excess alcohol intake Identifiable causes of HTN
JNC 7 Express. JAMA. 2003 30
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DRUG-INDUCED HTN: PRESCRIPTION MEDICATIONS
•Steroids
•Estrogens
•NSAIDS
•Phenylpropanolamines
•Cyclosporine/Tacrolimus
•Erythropoietin
•Sibutramine
•Methylphenidate
•Ergotamine
•Ketamine
•Desflurane
•Carbamazepine
•Bromocryptine
•Metoclopramide
•Antidepressants
• Venlafaxine•Buspirone
•Clonidine
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DRUG-INDUCED HTN: STREET DRUGS & HERBAL PRODUCTS
• Cocaine
• Ma huang “herbal ecstasy”
• Nicotine
• Anabolic steroids
• Narcotic withdrawal
• Methylphenidate
• Phencyclidine
• Ketamine
• Ergot-containing herbal products
• St John’s wort
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SUBSTANCES ASSOCIATED WITH HTN
Food Substances
•Sodium Chloride
•Ethanol
•Licorice•Tyramine-containing foods (with MAOI)
Chemicals
•Lead
•Mercury
•Thallium & other heavy metals
•Lithium salts
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FOLLOW-UP & MONITORING
Patients should return for follow-up & adjustment of medications every 1-2 months until the BP goal is reached
After BP at goal & stable, follow-up visits at 3- to 6-month intervals More frequent visits for stage 2 HTN or with
complicating comorbid conditions Continue to encourage self BP monitoring
Serum K & Cr monitored 1–2 times per year
JNC 7 Express. JAMA. 2003 35
NON - ADHERENCE Misunderstanding of Condition Denial of illness / Asymptomatic Lack of patient involvement in care plan Unexpected adverse effects of medicine Too many f / u visits, lab requests
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KEYS TO ACHIEVING BP CONTROL • BP checks at every patient care encounter
–Including optometry, OB-GYN, etc
• BP clinic (Non-MD clinic)
–Free & frequent visits, walk ins welcome
–Removing all barriers for patients
• Simple algorithm – easy for providers & patients
–One BP goal (<140/90) for all patients
–Emphasis on combination pills (lisinopril / HCTZ)
–Emphasis on getting to target BP control quickly
• Feedback on Performance / Transparency
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NEW FEATURES AND KEY MESSAGES
The most effective therapy prescribed by the careful clinician will control HTN only if patients are motivated.
Motivation improves when patients have positive experiences with, & trust in, the clinician.
Empathy builds trust & is a potent motivator.
The responsible physician’s judgment remains paramount.
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CASES
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CASE 1: DIAGNOSIS
AB is a 56 yo female with no significant PMH.
Her BMI is 26 & she has a FHx positive for Type 2 DM.
Her BP measured on 2 consecutive clinic visits is 132/84.
What is AB’s BP classification?
1. Normal2. Prehypertensive3. Stage 1 Hypertension4. Stage 2 Hypertension
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CASE 1: THERAPY
What therapy should be initiated for AB?
1. Enalapril 5 mg PO daily
2. Hydrochlorothiazide 25 mg PO daily
3. No therapy is indicated
4. Lifestyle modifications including weight loss & DASH eating plan should be encouraged
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CASE 1: GOAL OF THERAPY
What is the goal of lifestyle modification in AB?
1. Goal BP < 140/90, the goal is to get to goal
2. Goal BP < 130/80, the goal is to get to goal
3. Improve patients quality of life
4. Prevent onset of hypertension
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CASE 1: 5 YEARS LATER
AB, now 59 y, returns to clinic with marginal success at lifestyle changes. Her BP has repeatedly measured around 146/92. What is AB’s BP classification?
1. Normal
2. Prehypertensive
3. Stage 1 Hypertension
4. Stage 2 Hypertension
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CASE 1: 5 YEARS LATER
AB, now 59, returns to clinic with marginal success at lifestyle changes. Her BP has repeatedly measured around 146/92. What should be done?
1. Enalapril 5 mg PO daily2. Hydrochlorothiazide 25 mg PO daily3. No therapy is indicated4. Reinforce lifestyle modifications
including weight loss and the DASH eating plan.
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CASE 2: GOAL OF THERAPY
CD is a 50 yo black male with diet controlled type 2 diabetes. Consecutive BP measurements during recent clinic visits are 162/98 and 158/96. He is diagnosed with Stage 2 Hypertension. What is the goal of therapy for CD?
1. Goal BP <140/90
2. Goal BP <130/80
3. Slow the progression of diabetic renal disease by reducing BP to <125/80
4. Improve patients quality of life
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CASE 2: THERAPY
What therapy should be initiated for CD?
1. A 6 month trial of lifestyle changes should be initiated immediately
2. Hydrochlorothiazide 25 mg PO daily
3. Enalapril 10 mg PO daily
4. Enalapril / Hydrochlorothiazide 5/12.5 mg PO daily
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