Results 221 to 230 of about 194,646 (286)
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International Journal of Cardiology, 2008
A juxtaposition of long and short RR intervals was observed in 2 hypertensive patients recovering from major surgery under spontaneous ventilation. Sinus rhythm was ascertained throughout the recording. These oscillations could not be linked one-to-one to ventilatory cycles.
Gratadour, P. +5 more
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A juxtaposition of long and short RR intervals was observed in 2 hypertensive patients recovering from major surgery under spontaneous ventilation. Sinus rhythm was ascertained throughout the recording. These oscillations could not be linked one-to-one to ventilatory cycles.
Gratadour, P. +5 more
openaire +1 more source
Nonrespiratory Sinus Arrhythmia
American Journal of Critical Care, 2005Scenario: This continuous lead II rhythm strip was obtained in a 25-year-old woman admitted to the intensive care unit for intracerebral hemorrhage. The patient presented to the emergency department with a headache after a skateboarding accident. The patient stated that she “bumped” her head during the accident.
Stephanie S, Deboor +2 more
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Pediatrics, 1960
Though there are many comments on respiratory sinus arrhythmia in articles and textbooks, there have been surprisingly few data collected. We have presented data from 4,096 electrocardiograms of 199 healthy individuals on pulse rate, range (max. difference in cycle length), and frequency index (range/mean cycle lengthx100).
Richard Reeve, Kee DeBoer
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Though there are many comments on respiratory sinus arrhythmia in articles and textbooks, there have been surprisingly few data collected. We have presented data from 4,096 electrocardiograms of 199 healthy individuals on pulse rate, range (max. difference in cycle length), and frequency index (range/mean cycle lengthx100).
Richard Reeve, Kee DeBoer
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Sinus arrhythmia in rheumatic fever
American Heart Journal, 1961Abstract 1. 1. The degree (frequency index) of sinus arrhythmia was investigated in children suffering an initial attack of rheumatic fever (with and without carditis), in children with a recurrent attack, and in children with normal hearts who served as controls. 2. 2.
M C, JOSEPH, L, TENCKHOFF
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A Minimal Model for the Respiratory Sinus Arrhythmia
Biological Cybernetics, 2006The cardiac and respiratory rhythms in humans are known to be coupled by several mechanisms. In particular, the first rhythm is deeply modulated by the second. In this report we propose a simple operational model for heart rate variability which, taking such modulation into account, reproduces the main features of some experimental sequences of RR ...
Barbi M +4 more
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Arrhythmias and Sinus Node Dysfunction
JAMA: The Journal of the American Medical Association, 1984To the Editor. — Alpert and Flaker1have contributed an excellent review of arrhythmias associated with sinus node dysfunction. I wish to take exception to only one item, which, unfortunately, is a recurring source of confusion in many publications. In the author's Table 1, they list acute pericarditis as a cause of sinus node dysfunction.
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