The effect of using low dose norepinephrine before hypotensive resuscitation in hemorrhagic shock; a randomized controlled trial | [Anaesthesia, Pain and Intensive Care • 2024]

Author(s):

1. Rabab Mohamed Mohamed: Department of Anesthesiology, Surgical Intensive Care & Pain Medicine, Faculty of Medicine, Tanta University,Tanta;,Egypt

2. Atia Gad Anwar: Department of Anesthesiology, Surgical Intensive Care & Pain Medicine, Faculty of Medicine, Tanta University,Tanta,Egypt

3. Ahmed Aboelhasan Eid: Department of Anesthesiology, Surgical Intensive Care & Pain Medicine, Faculty of Medicine, Tanta University,Tanta,Egypt

Abstract:

Background & Objectives: Hemorrhagic shock is not a very rare occurrence in big hospitals. It might be encountered in the emergency room (ER) or in the operating rooms (OR). A rapid response and systematic management will save the life of the victim. The objective of this research was to investigate the impact of a low dose of norepinephrine (NE) administered prior to the initiation of hypotensive resuscitation in patients with hemorrhagic shock. Methodology: This randomized controlled trial was conducted on 200 participants, at least 18 years old, classified as severely traumatized and had significant hemorrhage with mean arterial pressure ranging from 65 to 75 mmHg. We divided the patients into two equal groups. Group I received a low dose of NE ( 65 mmHg, the patient was progressively administered NE even with high doses (0.05 to more than 0.3 µg/kg/min). The primary outcome was 24-hour mortality. In-hospital mortality, incidence of acute kidney injury (AKI), and duration of hospital and intensive care unit (ICU) stay constituted the secondary outcomes. Results: Group I had lower 24-hour mortality compared to Group II (3% vs 13%; P < 0.05). Compared to Group II, Group I needed reduced amount of fluid resuscitation within 24 h, had lower serum lactate levels at 6 and 12 h, and lower serum creatinine at 6, 12, and 18 h (P < 0.001). Group I had a lower incidence of mechanical ventilation (13% vs 27%), hospital and ICU stays, and in-hospital mortality (9% vs 21%) (P < 0.05). There was a lack of disparity seen in the incidence of AKI and duration of mechanical ventilation. Conclusion: Low-dose norepinephrine infusion during the early period of hypotensive resuscitation reduces resuscitative fluid requirement, improves tissue perfusion, preserves renal function, and lowers mortality in hemorrhagic shock patients. Abbreviations: AKI - acute kidney injury; APACHE III - Acute Physiology And Chronic Health Evaluation III; HS hemorrhagic shock; ICU - intensive care unit; MAP - mean arterial pressure; NE - Norepinephrine

Page(s): 914-921

DOI: 10.35975/apic.v28i5.2560

Published: Journal: Anaesthesia, Pain and Intensive Care, Volume: 28, Issue: 5, Year: 2024

Keywords:

Mortality , Hemorrhagic shock , Fluid Therapy , Norepinephrine , Hypotensive Resuscitation , Low Dose , Renal Protection

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