Prognostic significance of exercise-induced left bundle-branch block

Article Abstract:

Cardiac patients who experience left bundle-branch block (LBBB) during treadmill stress testing have a higher risk of subsequent cardiac events such as heart attack or arrhythmias. LBBB is an abnormality in the heart's electrical conduction system. Researchers used an ECG to document LBBB in 70 patients undergoing a stress test. They and 70 similar patients without LBBB were followed for up to five years. Twenty-eight of the patients who had LBBB had some type of cardiac event, compared to 9 of the patient without LBBB. Five of the seven deaths occurred in the LBBB patients.

Risk factors, Heart attack, Arrhythmia, Heart block

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Impaired Chronotropic Response to Exercise Stress Testing as a Predictor of Mortality

Article Abstract:

Chronotropic incompetence may predict which patients with mild heart disease have a high risk of death. Chronotropic incompetence occurs when the heart does not reach its maximum rate during exercise. In a study of 1,877 men and 1,076 women who had a treadmill exercise test, about one-third had chronotropic incompetence. During the next two years, patients with chronotropic incompetence were about twice as likely to die as those without. This risk factor was independent of defects found on a thallium scan.

United States, Patient outcomes, Mortality, Heart beat, Heart rate, Cardiac patients

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The prognostic value of a nomogram for exercise capacity in women

Article Abstract:

A nomogram is constructed to permit determination of predicted exercise capacity for age in women and the predictive value of the nomogram with respect to survival is assessed. The results establish a nomogram for predicted exercise capacity on the basis of age that is predictive of survival among both asymptomatic and symptomatic women.

United Kingdom, Health aspects, Cardiovascular diseases, Women, Exercise, Women's health

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