complications of cirrhosis...
TRANSCRIPT
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COMPLICATIONS OF CIRRHOSIS Varices/Ascites/HE
Kenneth E. Sherman, MD, PhD Gould Professor of Medicine
University of Cincinnati College of Medicine
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Complications of Cirrhosis
• Varices • Ascites
– Hepatorenal Syndrome
– Spontaneous Bacterial Peritonitis (SBP)
– Hepatic Hydrothorax
• Hepatic Encephalopathy (HE)
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Portal Circulation
• Mesenteric circulation comprised arteries to the gastrointestinal (GI) tract and spleen
• Veins from the GI tract and spleen merge to form the portal vein
• Portal vein delivers blood to the liver where it branches into progressively smaller veins
• Liver: dual vascular supply – Portal vein (80%-90%) – Hepatic artery (oxygen)
Liver
Left, right Portal veins
Portal vein
Veins from pancreas & duodenum
Veins from ascending
colon
Esophageal veins
Short Gastric veins
Left, right gastric veins
Splenic vein
Gastro- epiploic vein
Inferior mesenteric vein
Superior mesenteric vein
Veins from jejunum &
ileum
Veins from descending & sigmoid colon
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Varices
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Small
Large
Esophageal Varices
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‘Cherry Red’ Spots ‘Red Wales’
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Upper Endoscopy
AASLD Practice Guideline 2007
Management: Cirrhosis Screening and surveillance
No varices
Repeat endoscopy in 3 years (well
compensated); in 1 year if
decompensated
No beta-blocker prophylaxis
Small varices (<5 mm), Child B/C, red wales
Beta-blocker prophylaxis
Medium or large varices
Child Class A, no red wales-beta blockers
Child class B/C, red wales-beta blockers,
or band ligation
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Cirrhosis
Prevalence
35%-80%
Risk of Bleeding: Esophageal Varices
25%-40%
Die 30%-50% 50%-70%
Survive
Rebleed 70%
Risk of Bleeding
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Management of Acute Hemorrhage
• Sclerotherapy and band ligation are
effective
– Sclerotherapy: greater risk of
complications
• Unclear if there is a beneficial additive
effect of somatostatin analogs
(octreotide)
• TIPS is reserved as salvage therapy
• Liver Transplantation
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Ascites
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Ascites
• Fatigue • Poor quality of life • Muscle wasting/catabolism • Umbilical hernia with risk of rupture • Hydrothorax • SBP • Hepatorenal Syndrome • Pain •Respiratory difficulties
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20
40
60
80
100
1 2 3 4 5 6 Years Onset
Survival (%)
Cirrhotic Ascites – Survival
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• Physical Examination and Ultrasonography - 1.5-3.0 liters: Shifting dullness - 10 liters : Fluid wave • Paracentesis
– <<1 % risk of Hematoma or hemoperitoneum - No need for FFP or platelets for paracentesis - Helps in differential diagnosis - 20 % prevalence of SBP/infection at time of admission - Indication:
• Ascites ! • New diagnosis • Fevers • Deterioration of liver disease during hospitalization
Ascites due to Cirrhosis: Diagnosis
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Bacterial Infection and Variceal Bleeding
• Increased risk of bacterial infection – (SBP or bacteremia without obvious source)
• Develops in 20% of patients within 48 hours and 35-66% within 2 weeks
• More common in hospitalized patients with variceal bleeding than other complications
• Compared to patients without infection presence of infection is associated with – Failure to control bleeding (65% vs 15%) – Early rebleeding – Mortality (40% vs 3%)
Vivas et al., Dig Dis Sci 2001
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Antibiotic Prophylaxis During/After Acute Variceal Bleeding
• Prophylatic ofloxacin vs antibiotics only at diagnosis of infection
• ↓ infections (2/59 vs 16/61)
• Less rebleeding within 7
days
• ↓ blood transfusions for rebleeding
• Prophylactic antibiotics recommended in management of acute variceal hemorrhage
Hepatology 2004;39:746
Patients at risk Prophylactic : 59 48 42 38 17 8 2 On demand : 51 36 34 30 19 9 2
Prob
abili
ty
Follow-up (Months)
0.0 1 2 3 12 18
1.0
0.8
0.6
0.4
0.2
0 24 30
On-demand antibiotics (n=61)
Polyphylatic antibiotics (n=59)
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First Line Therapy Second Line Therapy
Tense ascites
Paracentesis
Sodium restriction ( <2 Gm/24 Hrs) and diuretics
Non-tense ascites
• Repeated Large volume paracentesis (LVP)
•TIPS
• Liver Transplantation
Refractory Ascites 10 %
•Diuretics: Spironolactone 100 mg/day, furosemide 40 mg/day or bumetanide 1 mg a day.
• Uptitrate stepwise to spironolactone 400 mg/day, furosemide 160 mg/day or bumetanide 4 mg/day as long as it is tolerated
• Post paracentesis albumin infusion may not be necessary for < 5 liters removed • Albumin infusion of 12 gm/liter of fluid removed is a consideration for repeated LVP
Management of Ascites
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ROUTINE OPTIONAL UNUSUAL Cell count Glucose
TB smear/culture Albumin LDH
Cytology
Gram Stain
Culture (in blood-culture bottles)
Amylase
Total Protein
Ascitic Fluid Analysis
Alk Phos
CEA
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• Spontaneous bacterial peritonitis
• Monomicrobial non-neutrocytic bacterascites
• Culture negative neutrocytic ascites
Ascitic Fluid Infection
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• Polymorphonuclear leukocytes > 250 /mL
• Positive ascites culture (in blood culture bottles)
• Absence of intra-abdominal source of infection
Spontaneous Bacterial Peritonitis
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Spontaneous Bacterial Peritonitis - Cefotaxime – minimal dose 2 grams IV every 12 hours for a
minimal duration of 5 days - Zosyn –dose 2 grams IV every 8 hours for a minimal duration of 5
days - Alternatives: Ceftizoxime, Ceftriaxone, Ceftazidine,
Amoxicillin-Clavulanic acid - If patient has beta-lactam hypersensitivity – Quinolones
(e.g. Ciprofloxacin) Albumin - Albumin infusion-dose of 1.5 grams/kg body weight within 6
hours of SBP diagnosis followed by 1 gram/kg BW on day 3 - Albumin reduced mortality (29% to 10%)
Antibiotics in Cirrhosis for the management of known or suspected SBP
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• SBP prophylaxis - Norfloxacin 400 mg per day by mouth or
Ciprofloxacin 500 mg per day - Double-strength trimethoprim/sulfamethoxazole
daily by mouth - Intermittent dosing of prophylactic antibiotics may
select resistant flora; daily dosing is preferred - High ascitic fluid protein (i.e. >1 gram/dL) – no
prophylaxis indicated - Low ascitic fluid protein (i.e. < 1 gram/dL) – no
consensus but could consider for antibiotic prophylaxis
Antibiotics in Cirrhosis
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Renal Dysfunction
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Renal Injury in Cirrhosis
Volume Response
66%
Volume Non-Response
34%
Most common causes
1) Sepsis
2) GI hemorrhage
3) Diarrhea
4) Aggressive use of diuretics
Hepatorenal Syndrome
1) NSAIDS
2) Contrast dye
3) Intrinsic renal disease
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Prevention of Acute Renal Injury in Cirrhotics
• Avoid aminoglycoside antibiotic
- 10-fold increase renal toxicity
• Avoid NSAIDs
• Avoid I.V. contrast or hydrate and use NAC
• Frequent monitoring of renal function in cirrhotic patient with ascites is essential
• Patient instruction on use of diuretics, lactulose, antibiotics, NSAID
• Early transfer of patients
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1.0
0.8
0.6
0.4
0.2
0.0 S
urvi
val
Type 1 hepatorenal syndrome
Months
Survival is Decreased with Renal Dysfunction
Blackwell: Science, Oxford, UK. Gines et al. NEJM 2004;350:1646-1654.
P<0.001
Creatinine <1.2 mg/dL
Creatinine 1.2-1.5mg/dL
Creatinine >1.5mg/dL
1.0
0.8
0.4
0.2
0.0 1 2 3 4 5
Years
Surv
ival
Refractory ascites
Survival in Cirrhosis Based on Level
of Renal Dysfunction
Survival Among Patients With Cirrhosis and
Hepatorenal Syndrome
1 2 3 4 5 0 0 6
0.6
0 0
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Hepatorenal Syndrome
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Hepatorenal Syndrome
• Functional renal failure without histological renal lesions
• Intense renal vasoconstriction
• Decreased renal perfusion and GFR associated with activation of renin-angiotensin system, ADH, SNS to maintain arterial pressure
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Hepatorenal Syndrome: Diagnostic Criteria
• Cirrhosis with ascites • Serum creatinine >133 µmol/L (1.5 mg/dL) • No improvement of serum creatinine (↓ to a level of ≤ 133 µmol/L (1.5 mg/dL)) after at least 2 days with
diuretic withdrawal and volume expansion with albumin; the recommended dose of albumin is 1 g/kg of body weight per day up to a maximum of 100 g/day
• Absence of shock • No current or recent treatment with nephrotoxic drugs • Absence of parenchymal kidney disease as indicated
by proteinuria >500 mg/day, microhematuria (>50 red blood cells per high power field), and/or abnormal renal ultrasonography
Arroyo V et al. Semin Liver Dis. 2008;28:81-95.
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Classification
• Three types – Type 1 - rapidly progressive, oliguria, very low urine Na,
hyponatremia, precipitating event (SBP or other bacterial infection, surgery, GI bleed)
• see death within 2-3 weeks
• dialysis is unhelpful unless transplantation planned
– Type 2 - moderate renal insufficiency (Cr 1.5-2.5 mg/dl), steady for months, can degenerate into Type 1 with precipitant
– Type 3 - occurs over 3-6 months
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Prevention
• Volume expansion therapy with diagnosed SBP
– Albumin 1.5 gm/kg at diagnosis then 1.0 gm/kg at day
– Significant decrease in subsequent HRS and hospital mortality
• Primary SBP prophylaxis in high risk patients with refractory ascites
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TIPS
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Catheter
Hepatic veins
TIPS
Portal vein
Superior mesenteric vein Inferior mesenteric vein
Left gastric vein
Inferior vena cava
Reprinted with permission from Trevillyan J et al. Am Fam Physician. 1997;55:1851-1858.
Placement of TIPS
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Indications and Efficacy of TIPS
Efficacy Effective Mortality
Secondary Prevention of Variceal Bleeding Yes No Effect
Refractory Cirrhotic Ascites Yes No Effect
Efficacy in Absence of Another Therapy Effective
Refractory Acutely Bleeding Varices
Yes
Portal Hypertensive Gastropathy Yes
Gastric Antral Vascular Ectasia No
Refractory Hepatic Hydrothorax Yes
Budd-Chiari Syndrome Yes
Veno-Occlusive Disease No
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Contraindications for TIPS
• Cardiomyopathy with heart failure
• Pulmonary hypertension: moderate to severe esp if right heart failure
• MELD
– Relative contraindication >18
– Absolute contraindication >23
• HCC
• Intractable hepatic encephalopathy MELD, Mayo end-stage liver disease.
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Hepatic Encephalopathy
(HE)
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• Associated with a poor prognosis
• Retrospective review of 111 cirrhotic patients for 12 - 17 months following first episode of acute OHE:
– 82 (74%) died during follow-up period
– Survival probability
• 42% at 1 year
• 23% at 3 years
Importance of Overt Hepatic Encephalopathy
Bustamante J et al. J Hepatol. 1999;30(5):890-895.
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Neurologic Manifestations of OHE
Common Less Common • Confusion or coma • Asterixis • Loss of fine motor skills • Hyper-reflexia
• Cognitive deficits detected by special testing • Babinski sign • Slow, monotonous speech • Extrapyramidal-type movement disorders • Clonus • Decerebrate posturing • Decorticate posturing • Hyperventilation • Seizuresa
aSeizures seen primarily in type A HE. Mullen KD. Semin Liver Dis. 2007;27(suppl 2):3-9.
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Treatment of OHE
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General Principles of Management of OHE
• Acute HE in patients with cirrhosis is reversible in the majority of patients
• A precipitating cause of OHE, rather than worsening of hepatocellular function can be identified in most episodes
• Management of the precipitating events typically leads to prompt improvement
• Clinicians should simultaneously identify and resolve precipitating events while instituting pharmacologic therapy
Ferenci P. Semin Liver Dis. 2007;27(suppl 2):10-17.
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• Provision for supportive care
• Identification and removal of precipitating factors
– Infection, GI bleed, dehydration
• Reduction of nitrogenous load from the gut
• Correct electrolyte abnormalities
• Assessment of the need for long-term therapy
– Control of potential precipitating factors
– Higher likelihood of recurrent encephalopathy
– Assessment of the need for liver transplantation
Treatment Goals for OHE
Blei AT et al. Am J Gastroenterol. 2001;96(7):1968-1976.
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• Reduction in the nitrogenous load arising from the gut – Bowel cleansing – Non-absorbable disaccharides (lactulose) – Antibiotics (rifaximin, metronidazole)* – Agents that bind NH3 in the gut and increase activity
of the urea cycle • Na benzoate • Na phenylacetate • Na hydroxybutyrate
• Drugs that affect neurotransmission (flumazenil, bromocriptine)
• Manipulation of the splanchnic circulation (occlusion of portal-systemic collaterals) – Occlude TIPS shunt if present
Treatment Options for OHE
Adapted from Blei AT et al. Am J Gastroenterol. 2001;96(7):1968-1976.
* neomycin (historical interest)
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Treatment Options for OHE Lactulose
Ferenci P. Semin Liver Dis. 2007;27(suppl 2):10-17.
• Metabolism of lactulose by the bacterial flora in the colon to short chain fatty acids (lactic acid) lowers the colonic pH to about 5.0. The acid pH favors formation of non-absorbable NH4 from NH3
– Also hastens colonic transit and may lead to modification of colonic flora
• Dose (45-90 g/d) should be titrated to achieve 2 to 3 soft stools per day, associated with a pH below 6
• Principal side effects include abdominal distension, cramping, diarrhea, electrolyte changes, and flatulence
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• Potential for adverse effects often
precludes their use as first-line therapy for HE – Neomycin: Ototoxicity and nephrotoxicity – Metronidazole: Peripheral neurotoxicity – Vancomycin: Increased risk of bacterial resistance and
renal toxicity
• Increased risk of serious adverse events limits use in prolonged therapy
Treatment Options for Overt HE: Older Oral Antibiotics
Mullen KD et al. Semin Liver Dis. 2007;27(suppl 2):32-47.
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Treatment Options for OHE Rifaximin
Bass NM. Semin Liver Dis. 2007;27(suppl 2):18-25. Mullen KD et al. Semin Liver Dis. 2007;27(suppl 2):32-47.
• Oral minimally absorbed (<0.4%) antibiotic
• Broad-spectrum in vitro activity against aerobic and anaerobic enteric bacteria
• No clinical drug interactions reported
• No dosing adjustment required in patients with liver disease or renal insufficiency
• Approval of 550 mg tablets was granted March 24, 2010 for reduction in risk of HE recurrence
• HE approval was based on a large, double-blind, placebo-controlled, multinational, Phase 3 clinical trial published in The New England Journal of Medicine on March 25, 2010.
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Rifaximin 550 mg BID n=140
Placebo n=159
Discontinued n=52 (37%) Breakthrough HE: n=28 Adverse event: n=8 Death: n=6 Patient request: n=6 Exclusion criteria: n=1 Other: n=3
Discontinued n=93 (58%) Breakthrough HE: n=69 Patient request: n=9 Adverse event: n=7 Death: n=3 Exclusion criteria: n=3 Other: n=2
Completed Study n=88
Completed Study n=66
Randomization 1:1 N=299
(Randomized Controlled Trial)
Bass NM et al. N Engl J Med 2010;362:1071-1081
Rifaximin Treatment in HE: Randomization and Follow-up
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Rifaximin Treatment in HE: Lactulose Use at Baseline and During Study
Rifaximin (n=140)
Placebo (n=159)
Lactulose use at baseline—no (%)* 128 (91.4%) 145 (91.2%)
Lactulose use during study—no (%)* 128 (91.4%) 145 (91.2%)
*During the study, 3 patients who had been receiving lactulose discontinued the therapy and another three patients started lactulose (1 in the rifaximin group and 2 in the placebo group)
Bass NM et al. N Engl J Med 2010;362:1071-1081.
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Rifaximin Treatment in HE: Time to First Breakthrough HE Episode (Primary End Point)
Prop
ortio
n of
Pat
ient
s W
ithou
t B
reak
thro
ugh
HE
(%)
Rifaximin* (77.9%)
Placebo* (54.1%)
Bass NM et al. N Engl J Med 2010;362:1071-1081.
*Rifaximin 550 mg or placebo twice daily
Hazard ratio with rifaximin, 0.42 (95% Cl, 0.28–0.64) P<0.001
Days since Randomization
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Rifaximin Treatment in HE: Time to First HE Related Hospitalization (Key Secondary End Point)
Bass NM et al. N Engl J Med 2010;362:1071-1081.
Rifaximin* (86.4%)
Placebo* (77.4%)
*Rifaximin 550 mg or placebo twice daily Hazard ratio with rifaximin, 0.42 (95% Cl, 0.28–0.64) P<0.001
Prop
ortio
n of
Pat
ient
s W
ithou
t B
reak
thro
ugh
HE
(%)
Days since Randomization
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Rifaximin and HE: Side Effects Similar to Placebo
Adverse Events Reported in ≥10% of Patients in Either Study Group
Event Rifaximin (n=140)
Placebo (n=159)
Any event, n (%) Nausea Diarrhea Fatigue Peripheral edema Ascites Dizziness Headache
112 (80.0) 20 (14.3) 15 (10.7) 17 (12.1) 21 (15.0) 16 (11.4) 18 (12.9) 14 (10.0)
127 (79.9%) 21 (13.2) 21 (13.2) 18 (11.3) 13 (8.2) 15 (9.4) 13 (8.2)
17 (10.7)
• The incidences of adverse events did not differ significantly between the two study groups (p>0.05 for all comparisons)
Bass NM et al. N Engl J Med 2010;362:1071-1081.
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Minimal Hepatic Encephalopathy
(MHE)
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Minimal Hepatic Encephalopathy (MHE) Is Associated With Motor Vehicle Crashes: Predictive Accuracy of Diagnostic Testing
MHE Inhibitory Control Test
MHE Inhibitory Control Test
MHE Standard Psychometric Test
MHE Standard Psychometric Test
Percentage of patients with crashes by SELF-REPORT according to MHE status and diagnostic test (n=120)
Percentage of patients with crashes by DOT according to MHE status and diagnostic test (n=167)
P=0.0004
P=0.4
P=0.004
P=0.37
Positive Positive
Negative Negative
% %
Bajaj JS et al. Hepatology. 2009;50(Issue S4):461A-462A.
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Health Maintenance of the Cirrhotic Patient
• Vaccinations
• Bone disease screening, surveillance and
management
• HCC Screening and Surveillance
• Varices Screening and Surveillance
• Nutritional Support
– Vitamin assessment for Vit A and D deficiency
– Mineral assesment: Zinc and Mg++
• Review Medication List