Abstract

Subarachnoid block (SAB) is a preferred regional technique utilized by many institutions for caesarean section. A sensory block height of T5 is necessary for a successful caesarean under SAB. Unfortunately, side effects often emerge related to the physiological changes as a result of sympathetic nervous system inhibition. Current research suggests up to 55%-90% of parturients experience extended block height resulting in hypotension and bradycardia.There is a reduction in cardiac output due to a decrease in systemic vascular resistance and venous pooling. Similarly, the shift of cardiac autonomic balance toward parasympathetic stimulation causes bradycardia and activation of left ventricular mechanoreceptors due to a decreased ventricular volume. The mechanism is known as the Bezold-Jarisch reflex (BJR).

Author Details

Jeremy Bustamante, DNAP, CRNA

Sigma Membership

Non-member

Type

Other Graduate Paper

Format Type

Text-based Document

Study Design/Type

N/A

Research Approach

N/A

Keywords:

Bezold-Jarisch Reflex, Bradycardia, Cesarean Section, Hypotension, Ondansetron, Subarachnoid Block

Advisor

Hadenfeldt, Sharon

Degree

Doctoral-Other

Degree Grantor

Bryan College of Health Sciences

Degree Year

2017

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Review Type

Faculty Approved: Degree-based Submission

Acquisition

Proxy-submission

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