منابع مشابه
Respiratory variations in blood pressure.
A study of respiratory blood pressure variations in normal subjects suggests that variations in both cardiac output and peripheral resistance are involved, the latter mechanism being essentially similar to that producing the Traube waves in apnea. The interactions of the two mechanisms are compared to the known behavior of coupled electronic oscillators. T HE FLUCTUATION of the arterial pressur...
متن کاملDiurnal variations of blood pressure in cats.
Blood pressure (BP) was analyzed invasively using the telemetry system in unanesthetized, unrestrained healthy adult mongrel cats. After surgical implantation of a telemetry transmitter, BP was transiently elevated due to the invasive nature of the surgery, but it was gradually decreased. BP was largely stabilized seven to ten days postsurgery. Once BP was settled, systolic, diastolic and mean ...
متن کاملDiurnal variations of blood pressure in dogs.
Using the telemetry system, we measured the blood pressure (BP) invasively in seven adult mongrels while unanesthetized and unbound. Post-operative BP after implanting the telemetry BP transmitter showed temporarily high values due to the invasive nature of the surgery. It was, however, observed that BP gradually decreased thereafter, and showed settled trends from the eighth day post-operative...
متن کاملWhether Atmospheric Pressure Changes Predict Variations in Blood Pressure
The influence of climate on arterial blood pressure (BP) has been demonstrated in several studies on hypertensive and normotensive patients of all ages [1-5]. There is a tendency for both systolic (SBP) and diastolic blood pressure (DBP) to rise in the winter [1-6]. Atmospheric pressure (AP) is the most objective weather factor because, regardless of being indoors or outdoors, it affects all ob...
متن کاملAssessment of casual blood pressure variations.
All residents in a suburban community in southern Sweden, 8 years of age and older, were invited to an ophthalmological examination. The examination included a blood pressure determination. Of the 1917 persons invited 85-5% took part in the study. 3-5% of these were excluded because they were taking antihypertensive drugs. The investigations were conducted during 14 consecutive months and at di...
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ژورنال
عنوان ژورنال: BMJ
سال: 1990
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.300.6724.612-b