Effect of Calcium Chloride on Recovery From Neuromuscular Blockade

Seoul National University Hospital58 enrolled

Overview

The purpose of this study is to evaluate the effect of calcium chloride against residual neuromuscular blockade at the end of general anesthesia

During general anesthesia, neuromuscular blocking agent is administered to facilitate endotracheal intubation and the view of operative field. The neuromuscular blockade should be reversed at the end of anesthesia to recover spontaneous breathing of the patient. Residual neuromuscular blockade (RNMB) is defined as train of-four ratio \< 0.9. RNMB is a risk factor for postoperative pulmonary complication and increases postoperative mortality. Neostigmine is acetylcholinesterase inhibitor routinely used at the end of anesthesia to prevent RNMB. A meta-analysis, however, showed that 40 percent of patients who received intermediate-acting neuromuscular blocking agent during anesthesia showed RNMB in PACU. Calcium triggers the release of acetylcholine from the motor nerve terminal and enhances excitation-contraction coupling in muscle. Increasing calcium concentrations decreased the sensitivity to dTc and pancuronium in an animal muscle-nerve model. The effect of calcium chloride on residual neuromuscular blockade is not studied yet. The purpose of this study is to evaluate the effect of calcium chloride on residual neuromuscular blockade at the end of general anesthesia

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

TRIPLE

Enrollment

Conditions

Residual Neuromuscular Blockade

Interventions

CalciumDRUG

Administration of calcium chloride 5 mg/kg along with neostigmine 25 mcg/kg + atropine 15 mcg/kg

controlDRUG

In the control group, all the procedures were the same with calcium group, except for the fact that calcium chloride is not administered

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 Years

Medical Language ↔ Plain English

Inclusion Criteria: * 18-65 yr * Body mass index 15.0-25.0 kg/m2 * American Society of Anesthesiologists physical status I-III * Scheduled for elective surgery with an expected duration of more than 60 min under general anesthesia with endotracheal intubation Exclusion Criteria: * Suspected difficulty airway * Bronchial asthma, chronic obstructive pulmonary disease * Neuromuscular disease * Hepatic or renal dysfunction. * Taking medications that might influence the effect of neuromuscular blocking agents * Allergy to the medication that used in this trial * Pregnant, or breastfeeding state * Suspected malignant hyperthermia * Contraindication to the medication that used in this trial * Hypercalcemia

Locations (1)

Seoul National University Hospital

Seoul, South Korea

Outcomes

Primary Outcomes

Time to train of-four ratio of 0.9.

Train of-four will be measured using acceleromyograph.

Time frame: At 10 minutes (expected aeverage) after the surgery

Secondary Outcomes

Train of-four ratio

Train of-four will be measured using accelerography.

Time frame: At 5, 10, 20 minutes after the administration of reversal drug

Length of PACU stay

Time frame: At 60 minutes (expected average) after the surgery

Data from ClinicalTrials.gov

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