Chronic stable angina prognosis
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It is common to equate severity of angina with risk of fatal cardiac events. There is only a weak relationship between severity of pain and degree of oxygen deprivation in the heart muscle (i.e. there can be severe pain with little or no risk of a heart attack, and a heart attack can occur without pain).
The annual mortality in patients with stable angina with documented coronary artery disease ranges from 1-4%. However, the prognosis varies widely depending on various factors like duration and severity of symptoms, resting ECG abnormalities, abnormal left ventricular function and associated comorbidities.[1] Impairment of left ventricular systolic function adversely influences the long term prognosis of patients with chronic stable angina. In patients with three-vessel coronary artery disease, the presence of ejection fraction of less than 50% or clinical evidence of heart failure is associated with almost three times higher mortality than in patients with normal left ventricular function and a similar extent of CAD.[2]
References
- ↑ Predicting prognosis in stable angina--results from the Euro heart survey of stable angina: prospective observational study. Daly CA, De Stavola B, Sendon JL, Tavazzi L, Boersma E, Clemens F, Danchin N, Delahaye F, Gitt A, Julian D, Mulcahy D, Ruzyllo W, Thygesen K, Verheugt F, Fox KM; Euro Heart Survey Investigators. BMJ. 2006 Feb 4;332(7536):262-7. Epub 2006 Jan 13 PMID: 16415069
- ↑ Braunwald, Eugene. (2003). "25". Primary Cardiology. Saunders. ISBN 0-7216-9444-6. Unknown parameter
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