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Effects of Nitroglycerin Versus Labetalol on Tissue Perfusion During Deliberate Hypotension

NCT03809065 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2020-04-27

No results posted yet for this study

Summary

Deliberate hypotension is used to provide bloodless field during endoscopic sinus surgery; however, hypotension might impair perfusion of vital organs. The aim of this work is to compare the impact of nitroglycerin and labetalol on peripheral perfusion when used for induction of deliberate hypotension

Conditions

  • Tissue Perfusion
  • Deliberate Hypotension
  • Sinus Endoscopic Surgery

Interventions

DRUG

Nitroglycerin

Nitroglycerin is a direct vasodilator and its main action is through venodilation. Nitroglycerin will be diluted by adding 3 mL (3 mg) to 47 mL normal saline in a 50 mL syringe and will be infused after endotracheal intubation with a starting dose of 0.5 mL/Kg/ hr to have a starting dose of 0.5 μg/Kg/min. The rate of nitroglycerin infusion will be 0.5-2 μg /kg/min .The infusion rate will be finely adjusted to maintain MAP around 55-65mmHg or till reaching adequate surgical field {defined as surgical field score (SFS) \<3}.

DRUG

Labetalol

Labetalol is an α and β - adrenergic receptors competitive antagonist. Labetalol will be diluted by adding 10 mL (50 mg) to 40 mL normal saline in a 50 mL syringe and will be infused after endotracheal intubation with a starting dose of 0.5 mL/Kg/ hr. The rate of Labetalol infusion will be 0.5-2 mg/kg/h.The infusion rate will be finely adjusted to maintain MAP around 55-65mmHg or till reaching adequate surgical field {defined as surgical field score (SFS) \<3}.

Sponsors & Collaborators

  • Cairo University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-01-19
Primary Completion
2019-05-25
Completion
2019-05-25

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03809065 on ClinicalTrials.gov