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Biomedical subjects

R Zerzawy

Publications and source records attributed to R Zerzawy.

13 recordsLinked to original sources
PubMed1981

Radiotelemetry of direct blood pressure measurements in the arterial and pulmonary circulation.

Radiotelemetry of direct blood pressure measurements in the arterial and pulmonary circulation is assessed in most practical situations of everyday life and sport activities. Comparison of radiotelemetric data with values estimated by practitioners, students and doctors of internal medicine demonstrates a general underestimation of everyday physical and emotional stress, whereas car driving is heavily overestimated. A wide difference is also found in swimming, isometric exercise and the cold phase of the sauna bath.

Aerospace Medicine↗
PubMed1981

Radiotelemetry of direct blood pressure.

With radiotelemetry either systemic arterial pressure or pulmonary artery pressure or both simultaneously can be measured, which allows testing of all groups of patients with cardiovascular diseases. The telemetry system also allows simultaneous assessment of ECG, which in patients with arrhythmias reveals the hemodynamic effects of ectopic beats. For radiotelemetry of blood pressure the microcatheter (Leadercath system) is introduced by a modified Seldinger technique into the brachial or femoral artery. The pressure transducer (Statham type P 23 and SP 37) is mounted extracorporeally as close as possible to the right atrium.

Blood Pressure↗
PubMed1981

Comparison of radiotelemetry of blood pressure and standard exercise tests.

The response of blood pressure, heart rate and systolic rate-pressure-product was investigated in healthy subjects during normal everyday and sports activities. In patients with coronary heart diseases the validity of different types of exercise tests was investigated during cross-country walking. The results are described in detail, leading to a number of clinically useful conclusions, e.g., that the body position and type of muscle work play an important role in the hemodynamic response, both in healthy persons and coronary patients.

Adult↗
PubMed1976

[Radiotelemetry of cardiovascular response on a fitness trail (author's transl)].

Continuous radiotelemetry of direct arterial blood pressure and heart rate was performed in eight healthy subjects (seven men, one woman; average age 26 years) on a fitness trail. The results demonstrate that such running represents a maximal effort, at 192/min heart rate (age-related maximum). The heart rate remained constant whether on largely dynamic exercise during running or on largely static effort during gymnastic exercise. During running, blood pressure rose up to 151/79 mm Hg, while gymnastic exercise gave mean values of up to 200/130 mm Hg as a result of sustained muscle contractions and forced breathing. Such uncontrolled maximal effort may be unexpectedly dangerous to persons with cardiovascular disease and fitness trails should not be recommended in the rehabilitation of cardiac patients.

Adult↗