Investigating how serum calcium levels affect pain after abdominal surgery

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective observational study examines the relationship between serum calcium levels and postoperative pain in patients undergoing elective abdominal surgery. Researchers will measure total serum calcium and ionized calcium levels before and after surgery, while also recording pain scores at various time points using a numerical rating scale (NRS). The goal is to determine if fluctuations in serum calcium levels can be a risk factor for experiencing postoperative pain.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Aged 18-70 years old
* American Society of Anesthesiologists Classification I-III
* Patients undergoing elective abdominal surgery under general anesthesia
* Patients participate voluntarily and sign an informed consent form

Exclusion Criteria:

* Patients with a history of severe disease
* Patients with chronic preoperative pain and/or long-term analgesic use
* Patients with hearing disorders or verbal communication difficulties
* Patients with psychiatric disorders or cognitive dysfunction
* Patients requiring mechanical ventilation or ICU admission after surgery
* Patients with a history of substance or alcohol abuse Patients who could not cooperate with the study for any reason

Where it's running

• The Second Affiliated Hospital of Chongqing Medical University
  Chongqing, Chongqing Municipality, China Recruiting

Study contacts

• Study coordinator: Guangyou Duan, PhD
• Email: duangy@hospital.cqmu.edu.cn
• Phone: +86 183 2337 6014

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

• PECS II vs SPSIP nerve blocks for pain after mastectomy

  This study tests whether two ultrasound-guided nerve blocks (PECS II and SPSIP) differ in how much opioid patients need after mastectomy.

  Recruiting Bursa City Hospital · Nilufer, Bursa · NCT07929090

• Palatal Shield Technique to Reduce Pain and Improve Healing After Free Gingival Graft

  This randomized trial tests whether a collagen sponge with a protective palatal shield made of flowable resin helps reduce pain and improve healing after free gingival graft harvest.

  Recruiting Cairo University · Cairo, Cairo Governorate · NCT07926516

• Perfusion Index to Measure Postoperative Pain in Kids After Adenotonsillectomy

  This study tests whether the perfusion index can reliably reflect pain levels in children aged 1–12 after adenotonsillectomy, comparing standard care with an added glossopharyngeal nerve block.

  Recruiting Istanbul University · Istanbul, Istanbul · NCT07915804

• Anterior Knee Nerves Block vs Femoral Nerve Block for Knee Arthroscopy

  This trial tests whether an anterior nerves of the knee (ANK) block provides similar pain relief to a femoral nerve block after knee arthroscopy in adults, aiming to reduce quadriceps weakness.

  Recruiting Van Training and Research Hospital · Van · NCT07910500

• Natural Biopolymer-Based Irrigant for Root Canal Cleaning

  This trial tests a chitosan nanoparticle irrigant to improve cleaning and disinfection in single-rooted teeth with asymptomatic pulp necrosis undergoing endodontic treatment.

  Recruiting Minia University · Minya · NCT07901127

• Postoperative Pain Trajectories After Endometriosis Surgery

  This study tests how pain changes after endometriosis surgery and whether perioperative pain testing can predict who will have ongoing pain.

  Recruiting Centre Hospitalier Universitaire, Amiens · Amiens · NCT07882498

How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.