[Systolic cardiac output and minute-volume during natural sleep in the cat. Preliminary research with implanted electromagnetic flowmeters].
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Animals↗
Biomedical subjects
G Baccelli
Publications and source records attributed to G Baccelli.
Carotid body chemoceptors: physiological role in buffering fall in blood pressure during sleep.
In cats whose aortic nerves were severed subsequent deafferentation of the carotid body chemoceptors (the carotid sinus baroceptors remaining intact) did not change arterial pressure during wakefulness or light sleep, but the falls in pressure during deep sleep were markedly exaggerated. Subsequent baroceptive denervation did not modify the hypotensive effect.
Animals↗
[Changes in arterial pressure during sleep in animals with experimental renal hypertension].
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Animals↗
[Changes in arterial pressure during sleep in animals with experimental renal hypertension, before and after sino-aortic deafferentation].
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Animals↗
[Effects of bilateral cervical vagotomy on the bradycardia and arterial hypertension of the natural sleep of the cat].
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Animals↗
[Selective abolition of sino-carotid chemoceptive reflexes and arterial pressure during the natural sleep of the cat].
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Animals↗
[Selective abolition of sino-carotid baroceptive reflexes and arterial pressure during the natural sleep of the cat].
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Animals↗
Respiratory influences upon depressor and pressor responses to stimulation of the aortic nerve in the decerebrate cat.
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Animals↗
Haemodynamic effects of isometric handgrip exercise in patients convalescent from myocardial infarction.
1. Cardiac performance in response to 30% maximal isometric handgrip exercise was studied in fourteen patients convalescing uneventfully from a first myocardial infarction. In each patient, heart rate, mean arterial blood pressure and cardiac index were measured, and total peripheral resistance was calculated. The covariance of changes in the mean arterial blood pressure and cardiac index in these patients was matched against tolerance limits calculated from published data for normal subjects. 2. All patients had normal haemodynamic values at rest, and showed the usual rise of heart rate and mean arterial pressure during handgrip exercise. However, in six patients (group 1) the rise in mean arterial pressure was, as in normal subjects, accounted for mainly by a rise in cardiac index, with no consistent change in peripheral resistance. In eight patients (group 2), the mean arterial pressure rose to the same level as in group 1, but with a consistent increase in peripheral resistance and a smaller rise in the cardiac index. 3. It is suggested that in a substantial proportion of patients who are making a seemingly uncomplicated recovery from myocardial infarction, it may be possible to unmask an impairment of left ventricular function by means of isometric handgrip exercise.
Adult↗