scholarly journals Introducing a novel mechanism to control heart rate in the ancestral Pacific hagfish

2016 ◽  
Vol 219 (20) ◽  
pp. 3227-3236 ◽  
Author(s):  
Christopher M. Wilson ◽  
Jinae N. Roa ◽  
Georgina K. Cox ◽  
Martin Tresguerres ◽  
Anthony P. Farrell
Keyword(s):  
Heart Rate ◽  
Control Heart ◽  
Control Heart Rate

scholarly journals The Use of Atropine to Control Heart Rate Responses During Detomidine Sedation in Horses

1986 ◽  
Vol 27 (4) ◽  
pp. 548-559
Author(s):  
Charles E. Short ◽  
Jean-Louis Stauffer ◽  
Gary Goldberg ◽  
Outi Vainio
Keyword(s):  
Heart Rate ◽  
Control Heart ◽  
Control Heart Rate

Ivabradine for Uncontrolled Sinus Tachycardia in Thyrotoxic Cardiomyopathy – Case Report

2021 ◽  
Vol 21 ◽  
Author(s):  
Amit Frenkel ◽  
Yoav Bichovsky ◽  
Natan Arotsker ◽  
Limor Besser ◽  
Ben-Zion Joshua ◽  
...  
Keyword(s):  
Heart Failure ◽  
Heart Rate ◽  
Congestive Heart Failure ◽  
Sinus Tachycardia ◽  
Beta Blockers ◽  
Selective Inhibitor ◽  
Thyroid Storm ◽  
Case Presentation ◽  
Control Heart ◽  
Control Heart Rate

Background: Beta blockers, mainly propranalol, are usually administered to control heart rate in patients with thyrotoxicosis, especially when congestive heart failure presents. However, when thyrotoxicosis is not controlled, heart rate may be difficult to control even with maximal doses of propranolol. This presentation alerts physicians to the possibility of using ivabradine, a selective inhibitor of the sinoatrial pacemaker, for the control of heart rate. Case presentation: We present a 37-year-old woman with thyrotoxicosis and congestive heart failure whose heart rate was not controlled with a maximal dose of beta blockers during a thyroid storm. The addition of ivabradine, a selective inhibitor of the sinoatrial pacemaker, controlled her heart rate within 48 hours. Conclusion: Ivabradine should be considered in patients with thyrotoxicosis, including those with heart failure, in whom beta blockers are insufficient to control heart rate

Carotid chemoreceptors and vagi in hypoxic and cyanide-induced tachycardia in the dog

1981 ◽  
Vol 240 (6) ◽  
pp. H874-H880 ◽  
Author(s):  
P. D. Gupta ◽  
M. Singh
Keyword(s):  
Heart Rate ◽  
Carotid Sinus ◽  
Adrenergic Blockade ◽  
Vagus Nerves ◽  
Carotid Chemoreceptors ◽  
Control Heart ◽  
Systemic Hypoxia ◽  
Spinal Section ◽  
High Control ◽  
Control Heart Rate

We investigated the mechanisms underlying heart rate changes resulting from systemic hypoxia in anesthetized artificially ventilated dogs with low control heart rate (less than or equal to 93 beats/min). We observed that systemic hypoxia evoked tachycardia in intact dogs that was not significantly different from that evoked in dogs with beta-adrenergic blockade (BB). Also, tachycardia elicited in dogs with BB plus spinal section at C3 (BBSS) was significantly greater than in dogs with BBSS plus bilateral section of carotid sinus nerves. Furthermore, under various anesthetics, intracarotid injection of sodium cyanide induced a tachycardia response in dogs with low control heart rate (less than or equal to 97 beats/min) and a bradycardia response in dogs with high control heart rate (greater than or equal to 130 beats/min). These results suggest that 1) when the resting cardiac parasympathetic tone is high, systemic hypoxia evokes tachycardia which is mediated predominantly through efferent vagus nerves and 2) the stimulation of carotid chemoreceptors causes excitation of both cardioacceleratory and cardioinhibitory reflexes, the resultant response being dependent on the prevalent autonomic drive.

Prevention of Cardiac Events After Major Noncardiac Surgery: Benefit of a Nurse-led Programme to Control Heart Rate on Day 1

2007 ◽  
Vol 16 ◽  
pp. S185
Author(s):  
H. Branagan ◽  
R. Braaksma ◽  
C. Jenkins ◽  
L. Hanekom ◽  
B. Venkatesh ◽  
...  
Keyword(s):  
Heart Rate ◽  
Noncardiac Surgery ◽  
Cardiac Events ◽  
Control Heart ◽  
Control Heart Rate

scholarly journals Cardiac ryanodine receptors control heart rate and rhythmicity in adult mice

2012 ◽  
Vol 96 (3) ◽  
pp. 372-380 ◽  
Author(s):  
M. J. Bround ◽  
P. Asghari ◽  
R. B. Wambolt ◽  
L. Bohunek ◽  
C. Smits ◽  
...  
Keyword(s):  
Heart Rate ◽  
Ryanodine Receptors ◽  
Adult Mice ◽  
Control Heart ◽  
Control Heart Rate
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