Browse Guides  internal medicine  cardiology

Myocardial infarction

Prevalence
Clinical features
Differential diagnosis
Investigations
Therapy
Prevention
Prognosis
Prevention

Diet

Lower cholesterol levels a even for patients with average levels (cholesterol 4.0 mmol/l to 6.2 mmol/l) a  

Why

  • Patients with coronary artery disease who have cholesterol-lowering therapy are less likely to die, particularly from heart disease a

Lowering cholesterol reduces mortality

Patient Treatment Comparison Outcome CER RRR
(95% CI)
NNT
(95% CI)
coronary artery disease a cholesterol-lowering therapy no therapy death
at 2 years
10% 16%
(12% to 19%)
63
(51 to 81)
      death from coronary heart disease
at 2 years
6.4% 28%
(24% to 32%)
56
(48 to 67)
  • Patients with cholesterol levels < 6.2 mmol/l who take pravastatin are less likely to have another myocardial infarction or die from heart disease, or require invasive therapy. a

Pravastatin reduces myocardial infarction or invasive therapy in patients with cholesterol levels < 6.2 mmol/l

Patient Treatment Comparison Outcome CER RRR
(95% CI)
NNT
(95% CI)
myocardial infarction and cholesterol levels < 6.2 mmol/l a pravastatin placebo non-fatal MI
at 5 years
8.3% 28%
(9% to 47%)
43
(26 to 140)
      CABG or PTCA
at 5 years
19% 26%
(14% to 37%)
21
(14 to 39)
myocardial infarction or unstable angina and cholesterol levels 4.0 mmol/l to 7.0 mmol/l a pravastatin placebo death
at 6 years
14% 22%
(12% to 30%)
33
(23 to 60)
      hospitalisation with unstable angina
at 6 years
25% 9%
(2% to 16%)
44
(25 to 180)

 

 

Expiry date: November 2003
Levels of Evidence used in grading these guides

Author   CM   Ball , N   Shenker
Reviewer   S   Straus
CAT Writers   CJ   Wotton , N   Shenker , B   Phillips , CM   Ball