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| Influence of different exercise and rest habits on young patients with chest tightness by noninvasive hemodynamic monitoring |
| XIN Weiran, GUAN Jingjing, PAN Mingkang |
| (Department of Cardiology, Zhongguancun Hospital, Beijing 100190, China) |
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Abstract Objective To investigate the influence of different exercise and rest habits on hemodynamics of young patients with chest tightness. Methods We selected 100 outpatients under 40 years old with chief complaints of chest tightness and other discomforts. They all denied basic medical history, and were generally normal in preliminary screening of ECG, chest X-ray, ultrasound cardiogram and myocardial enzymes indexes. According to exercise and rest habits, they were divided into regular exercise and rest group (18 cases), less exercise or stay up late group (35 cases), and less exercise plus stay up late group (47 cases). The changes of hemodynamic monitoring indexes of each group were analyzed. According to clinic blood pressure, the enrolled patients were divided into normal blood pressure group (57 cases) and elevated blood pressure group (43 cases). The changes of body mass index (BMI) and hemodynamic monitoring indexes were comparatively analyzed between the two groups. Results Among these groups with different exercise and rest habits, BMI, cardiac index(CI), systemic vascular resistance index (SVRi), and early diastolic filling ratio (EDFR) show statistical differences of medium equivalence between the groups. There are statistical differences of high equivalence in BMI and left cardiac work index (LCWi) between the normal blood pressure group and the elevated blood pressure group while SVRi is statistically different between groups with medium equivalence. Compared with the normal blood pressure group, increased BMI and hemodynamic abnormalities are more common in the elevated blood pressure group (P<0.01); the hemodynamic abnormalities are more prone to present as high LCWi (P<0.01), high SVRi(P=0.01), and possibly high CI (P<0.05) and high EDFR (P<0.05). Conclusion Among the population with unhealthy exercise and rest habits, the incidence of obesity and hemodynamic abnormalities are higher than those with exercise habits and regular schedule. The hemodynamic abnormalities are mainly manifested by the blood flow circulation state with relatively low discharge and high resistance, which indicates increased preload. Unrecognized hypertension or hypertension without intervention are found in nearly half of the young patients with chief complaints of chest tightness. The hemodynamic abnormalities are mainly manifested by the blood flow circulation state with relatively high left ventricular stroke work, and normal or high systemic vascular resistance. In clinical practice, it should be paid more attention and given early intervention.
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