Clinical study on patients with sub-respiratory failure the first report. Changes of mean blood pressure, heart rate and P waves of ECG during exercise test.:The First Report: Changes of Mean Blood Pressure, Heart Rate and P Waves of ECG during Exercise T

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This study was designed to study the changes of mean blood pressure, heart rate and P waves of ECG during treadmill exercise test and to know the limitation of exercise in patients with impaired pulmonary function (Pao2 61-75 Torr, Paco2 under 45 Torr, %VC unde 75%) due to pulmonary tuberculosis, old pleuritis, emphysema and pulmonary cyst.The results were summarized as follows;1. Mean blood pressure and heart rates during exercise test were significantly increased in both these patients and control subjects (p<0.05).2. The changes of P wave on ECG lead II and V1 were measured; P wave amplitude in lead II was high above normal range and significantly increased by exercise test (p<0.05), width, however, was not changed. Amplitude of biphasic P waves of V1 was significantly increased in the same test (p<0.05), but width was not changed.3. In six out of the cases of patients with sub-respiratory failure the exercise test was discontinued at stage VI because of dyspnea, tachycardia and cyanosis. The maximum was stage VII.These results suggest that clinical study on sub-respiratory failure may be important to prevent the unexpected development of severe respiratory failure, and that the limitation or exercise in patients with sub-respiratory failure may exist.
一般社団法人国立医療学会の論文