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[Effective use of study procedures using instruments in infarct patients before discharge from the clinic]
1Klinik für Innere Medizin, Bezirkskrankenhauses Friedrich Wolf Karl-Marx-Stadt.
Insights
Men after myocardial infarction show better exercise capacity and cardiac function than women, maintaining these advantages a year later. This highlights significant sex-based differences in recovery and long-term outcomes post-myocardial infarction.
Area of Science:
- Cardiology
- Exercise Physiology
- Sex Differences in Medicine
Context:
- Myocardial infarction (MI) survivors exhibit varied recovery trajectories.
- Sex-based differences in cardiovascular health and response to MI are increasingly recognized.
- Early assessment of functional capacity and cardiac mechanics is crucial for prognosis.
Purpose:
- To compare the functional capacity and echocardiographic parameters between male and female myocardial infarction survivors.
- To investigate the long-term (one-year) stability of observed sex-based differences post-MI.
- To identify predictors of mortality in MI patients.
Summary:
- Males (n=81) demonstrated superior exercise capacity (higher Wattage) and better echocardiographic findings (smaller left ventricle, greater shortening fraction) compared to females (n=23) at hospital discharge and one year post-MI.
- Specific subgroups, including those with pulmonary artery hypertension or complications, showed higher risks.
- Patients who died within one year had specific adverse clinical and echocardiographic profiles at discharge, including high resting heart rate, elevated pulmonary artery pressure, and impaired left ventricular function.
Impact:
- Findings underscore significant sex-based disparities in myocardial infarction recovery and prognosis.
- Identifies key clinical and hemodynamic parameters predictive of adverse outcomes and mortality.
- Informs personalized rehabilitation strategies and risk stratification for MI patients based on sex and clinical markers.
Abstract:
81 males and 23 females after myocardial infarction at the age of 61 +/- 12 and 69 +/- years, respectively, were examined at the end of the stay in the clinic and after one year by means of ergometry and echocardiography. While at the discharge from the clinic the females reached maximally only 50 Watt, 34.7% of the males transgressed this achievement. Also in the watt pulse and in the product of the pressure frequency these patients reached high values, less frequently showed pathological ST segments under exercise and echocardiographical revealed a smaller left ventricle, a greater shortening fraction as well as more insignificant disturbances of the kinetics. This group-typical behaviour remained up to the first year. In patients with pathological diastolic pressure of the pulmonary artery at rest in 8% the latent left heart insufficiency could clinical not be recognized and in those patients with pathological pressure under exercise 54% finished the ergometry without any other recognizable reasons of discontinuation. Finally, the patients who died up to the first year belonged to the group with complications in the intensive care unit, with high resting pulse rate, pathological diastolic pressure of the pulmonary artery, large left ventricle as well as left atrium and low shortening fraction at rest and low watt-number, when discharged from hospital.