Background An attenuated or absent nocturnal decline in blood pressure has repeatedly been documented in cardiac transplant recipients. The present study was aimed at investigating the hemodynamic mechanism underlying this abnormality. Methods and Results In 23 cardiac transplant recipients (11 to 36 months after transplantation) and in 23 control subjects matched for age and 24-hour mean arter...

ESPITE extensive studies on spontaneously hypertensive rats, there have been no studies on the cardiac output except a preliminary work by Albrecht et al,4) which reported a decreasing tendency of cardiac output with age. These authors employed the Stewart-Hamilton principle for the measurement of cardiac output. An attempt was made in this study to measure cardiac output in SHR by applying an ...

SCHMIDT,ROBERT M., MAMORU KUMADA, AND KIICHI SAGAWA. Cardiac output and total peripheral resistance in carotid sinus reflex. Am. J. Physiol. 221(Z) : 480-487. 197 1 .-The sensitivity of the carotid sinus baroreceptor reflex to step change in sinus pressure was studied in anesthetized dogs, with emphasis on the relative contributions of cardiac output (CO) and total peripheral resistance (TPR) i...

Three anephric patients were studied during sequential periods of normal hydration and overhydration. The increase in arterial pressure caused by the overhydration (+ 7% of body weight) was associated with an increase in peripheral resistance (+ 21.1%, P < 0.01). The elevation of peripheral resistance was preceded by an increased cardiac output (+ 22.3%, P < 0.02) which then fell part way to co...

Data are presented demonstrating a low thermal resistance lithographic laser. An 8 mm vertical-cavity surface emitting laser defined using lithography and epitaxial crystal growth provides output power of 14 mW, slope efficiency of 0.88 W/A corresponding to differential quantum efficiency of 70% and power conversion efficiency of 26%. Low thermal resistance, even without heatsinking, results in...