Muscle and Fat Mass in Preoperative Computed Tomography and a Neuromuscular Blocking Agent Dose

Relationship Between Muscle and Fat Mass Using Deep-learning Approach in Preoperative Computed Tomography and a Neuromuscular Blocking Agent Dose Required for Maintaining Deep Neuromuscular Blockade in Patients Undergoing Gynecological Surgery

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07478120

Enrollment

Registered

2026-03-17

Start date

2021-01-01

Completion date

2026-03-01

Last updated

2026-03-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neuromuscular Blockade, Neuromuscular Blockade Monitoring

Brief summary

Deep neuromuscular blockade has benefits in various surgical procedures and reduces postoperative pain. While neuromuscular blockade dosages are often based on the patient's actual body weight, body composition can vary significantly depending on age, gender, and individual exercise levels. Therefore, uniformly estimating neuromuscular blockade dosages based on actual body weight can result in under- or over-administered neuromuscular blocking agents. Calculating neuromuscular blockade dosage based on actual body weight can be inaccurate, but it remains due to the difficulty of accurately quantifying human muscle and fat mass. Recent advances in image analysis techniques utilizing artificial intelligence models have led to the development of methods for quantifying muscle and fat mass from computed tomography (CT). Theoretically, a higher neuromuscular blockade dosage should be required as the muscle mass increases. This study aims to analyze the relationship between neuromuscular blocking agent dosage, onset time, profound blockade time, and recovery time, and muscle mass and fat mass calculated from preoperative CT scans.

Interventions

OTHERNeuromuscular block

Neuromuscular blockade monitoring

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

19 Years to 85 Years

Healthy volunteers

Inclusion criteria

* American Society of Anesthesiologists physical class (ASA class) 1-3 * Patients scheduled for elective gynecologic surgery under general anesthesia * Patients undergoing abdominal computed tomography for routine preoperative preparation

Exclusion criteria

* Pregnant women * Decreased renal function (GFR\<60mL/min/1.73m2). * Patients taking drugs that affect deep neuromuscular blockade * Patients with a history of neuromuscular and muscle disorders

Design outcomes

Primary

Measure	Time frame	Description
muscle and fat mass	intraoperative period	subject's muscle and fat mass from preoperative computed tomography images.

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 18, 2026