Classification of Angina and Risk Factors

Classification of Angina and Risk Factors



Classification

Class I: angina only with unusually strenuous activity
Class II: angina with slightly more prolonged or rigorous activity than usual
Class III: angina with usual daily activity
Class IV: angina at rest



RISK
1. Uncontrollable factors

a. Advanced age

b. Male sex

c. Genetic predisposition

d. Coronary artery anomalies

2. Modifiable factors
a. Smoking (risk is almost doubled)
b. Hypertension (risk is doubled if systolic blood pressure is >180 mm Hg)
c. Hyperlipidemia
d. Impaired glucose tolerance or diabetes mellitus
e. Obesity (weight>30% over ideal)
f. Hypothyroidism (including subclinical hypothyroidism)
g. Left ventricular hypertrophy (LVH)
h. Sedentary lifestyle, depression (in men)
i. Postmenopause
j. Cocaine use (Cocaine is used by more than 5 million Americans regularly and is responsible for more than 64,000 emergency department evaluations yearly to rule out myocardial ischemia.)
k. Low folate levels, elevated homocysteine levels. Folate is required for conversion of homocysteine to methionine. Hyperhomocysteinemia has a toxic effect on the vascular endothelium and interferes with the proliferation of arterial wall smooth muscle cells. Folate deficiency is associated with an increased risk for fatal coronary heart disease. Elevated plasma homocysteine level is an independent risk factor for coronary heart disease (CHD) events, especially in patients with type 2 diabetes mellitus (DM). Trials lowering homocysteine levels have, however, been disappointing, because lowering therapy with folate did not prevent cardiovascular events among patients with coronary disease.
l. Elevated levels of highly sensitive C-reactive protein (hs-CRP, cardio-CRP)
m. Vasculitis
n. Renal dialysis.
o. Elevated levels of lipoprotein-associated phospholipase A2
p. Elevated fibrinogen levels
q. The development of coronary artery calcium (CAC) is associated with an increased risk for myocardial infarction.
r. Chronic use of nonsteroidal anti-inflammatory drugs (NSAIDs) is associated with increased cardiovascular risk
s. Low level of RBC glutathione peroxidase 1 activity.