Stellate Ganglion Block in Beating Heart Surgery

Status Not yet recruiting

Clinical Trial Summary

studies suggest that off-pump coronary artery bypass surgery is associated with improved outcomes when compared to on-pump coronary artery bypass. many studies have shown that off-pump coronary bypass surgery reduces patient morbidity and mortality.

manipulation of the coronary arteries during cardiac surgery can stimulate the adjacent post-ganglionic sympathetic fibers and mimic stellate ganglion stimulation ,stellate ganglion block (SGB) can interrupt this reflex by decreasing the efferent cervical sympathetic outflows.

Clinical Trial Description

when adopting off-pump surgery , the cardiac surgery team must adopt new techniques to handle a beating heart and the variations in hemodynamics that can occur when performing this type of procedure the incidence rate of cardiac arrhythmia occurring during and after surgery is one of the major complication in open heart surgery. in addition , intraoperative hemodynamic disorders, caused by changes in plasma levels of epinephrine and norepinephrine after surgical stimulation , are some of challenges for patients undergoing off-pump coronary artery bypass surgery. hemodynamic disruption leads to myocardial ischemia, resulting in increased incidence of cardiovascular events and mortality.

stellate ganglion is formed by the fusion of inferior cervical and first thoracic sympathetic ganglia and is located behind the subclavian artery and anterior to the first rib. the inferior cervical cardiac nerves arise from the medial aspect of the stellate ganglia and provide the cardio-accelerator nerve fibers to the cardiac plexus. stellate ganglion stimulation augments peak systolic pressure, and the enhanced myocardial contractility is secondary to stimulation by postganglionic nerve fibers which traverse from stellate ganglion down the great vessels and along the coronary arteries into the myocardium.the blockage of inferior cervical cardiac nerves is responsible for the bradycardia seen following SGB. SGB has been shown to prevent and control perioperative hypertension induced by increased sympathetic activity. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03450226
Study type	Interventional
Source	Assiut University
Contact	sara abdallah
Phone	01009556520
Email	sara92abdallah@gmail.com
Status	Not yet recruiting
Phase	N/A
Start date	March 2018
Completion date	June 2019

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.