NCT06957158

The Effect of Serum Calcium Levels on Postoperative Pain: A Prospective Observational Study

The Effect of Serum Calcium Levels on Postoperative Pain in Patients Undergoing Abdominal Surgery: A Prospective Observational Study

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 350 (estimated)
• Sponsor: The Second Affiliated Hospital of Chongqing Medical University · Academic / Other
• Sex: All
• Age: 18 Years – 70 Years
• Healthy volunteers: Not accepted

Summary

This is a prospective observational study. To investigate the effect of serum calcium levels on postoperative pain in patients undergoing abdominal surgery, and to determine whether changes in serum calcium levels are a risk factor for postoperative pain.

Detailed description

This study aimed to measure the total serum calcium and ionized calcium levels both before and after surgery. Additionally, NRS scores were recorded at different time points.

Conditions

• Postoperative Pain

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Peripheral venous blood	Peripheral venous blood was collected before and after the surgery to measure the total serum calcium levels.
DIAGNOSTIC_TEST	Arterial blood	Arterial blood was collected before anesthesia induction and after removal of the artificial airway to measure ionized calcium levels.

Timeline

• Start date: 2025-07-01
• Primary completion: 2025-12-01
• Completion: 2025-12-01
• First posted: 2025-05-04
• Last updated: 2025-06-27

Locations

1 site across 1 country: China