Pain and Nausea After Gallbladder Surgery

Pain and Nausea in the Post-anesthesia Care Unit Following Gallbladder Surgery - a Registry Study Using National Data From Gallriks and the Swedish Perioperative Register (SPOR)

The study is primarily an exploratory study of quality registry data for a swedish national cohort of patients who have undergone gallbladder surgery or ERCP, with the aim of investigating the occurrence of pain and PONV (Postoperative Nausea and Vomiting) after gallbladder surgery. Furthermore, the investigators will explorer if there are factors related to the patient or the surgical procedure that are associated with a higher risk of PONV or pain.

Study Overview

• Status: Recruiting
• Conditions: Postoperative Complications; Postoperative Pain; PONV; Gall Bladder Disease

Detailed Description

The project is a registry study with linked data from the Swedish national registry for gallbladder surgery (Gallriks) and the Swedish Perioperative Register (SPOR).

In SPOR, multiple variables are recorded and the main categories include patient characteristics, process data (e.g., times, operating room, planning, cancellations), surgical data (diagnosis, procedure, anesthesia type, times, deviations), and postoperative data (e.g., pain, nausea, complications, times, postoperative care level). The main variables of interest in this project are postoperative nausea and vomiting (PONV) and pain. In SPOR, it is possible to register whether the patient experienced nausea or vomiting and to assess pain in the immediate postoperative period during the stay at the postoperative recovery unit (PACU). The mean time of stay at PACU after gallbladder surgery in Sweden is 3.5 hours.

Gallriks records data related to gallstone surgery, including preoperative factors (including patient's illness), surgical processes, and postoperative outcomes up to 6 months after surgery.

The investigators have estimated that it is possible to include at least 50% of all gallstone surgeries in Sweden, which corresponds to a range of 7,000-8,000 patients per year.

Both quality registers are housed at the Uppsala Clinical Research Center (UCR), which will perform the data linkage. The data extraction process will start with the surgical cases in Gallriks and match them with SPOR. The database delivered to the research group will contain only pseudonymized personal data, with personal identification numbers and names removed.

The objectives of the study are:

• Describe the risk of early PONV (Postoperative Nausea and Vomiting) and pain during the PACU stay following gallstone surgery.
• Identify factors associated with early PONV and pain.
• Test the hypothesis that total intravenous anesthesia has a lower risk of PONV and pain at the PACU compared to inhalation-based anesthesia.
• Test the hypothesis that the addition of a regional block reduces the risk of PONV and pain during the PACU stay.
• Test the hypothesis that patients who experience PONV and/or pain in the postoperative ward have a higher risk of postoperative complications up to 6 months after surgery.

The primary outcome measures are:

• Risk of PONV in the postoperative ward (number of surgical cases with nausea and/or vomiting) / [total number of surgical cases].
• Median pain score (NRS) in the postoperative ward.
• Risk of severe pain (NRS>=7) [number of surgical cases with NRS>=7] / [total number of surgical cases].
• Percentage of patients with complications, unplanned hospitalizations, or reoperations after 30 days and 6 months.
• Based on the data in SPOR and Gallriks, identify factors associated with the primary outcome measures. Variables hypothesized to be associated include gender, age, illness, preoperative pain, type of anesthesia, type of surgery, and length of hospital stay.
• Specifically examine whether total intravenous anesthesia or regional blockade reduces the risk of PONV/pain and whether PONV/pain increases the risk of postoperative complications.

The data will be described using descriptive methods, and associations will be analyzed through univariate and multivariate analysis.

The study database is planned to include the procedures performed during the years 2016-2025. Databases will be delivered on a yearly basis. Analysis and reports/manuscripts from the study might include parts of the whole study period of 10 years.

• Study Type: Observational
• Enrollment (Estimated): 50000

Contacts and Locations

• Study Contact: Name: Jakob Wallden, MD PhD; Phone Number: +46703644392; Email: jakob.wallden@umu.se
• Study Contact Backup: Name: Tomi Myrberg, MD PhD; Email: tomi.myrberg@umu.se

Study Locations

• Sweden
  • X
    • Sundsvall, X, Sweden, 85357
      • Recruiting
      • Umeå University, Dept of surgical and perioperative sciences
      • Contact: Jakob Wallden, PhD MD; Phone Number: 0703644392; Email: jakob.wallden@gmail.com
      • Contact: Tomi Myrberg, PhD MD; Email: tomi.myrberg@umu.se

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Probability Sample

Study Population

Adult patients that had undergone gallbladder surgery in Sweden.

Description

Inclusion Criteria:

• Primary gallstone surgery
• Adult patients (>=18 years)
• Procedure performed between 2016 and 2025
• Surgical procedure registered in the national quality registry Gallriks.

Exclusion Criteria:

• If multiple surgeries on the same patient in the study database, subsequent procedures to the first procedure is excluded.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Postoperative nausea and vomiting	Incidence of PONV in the postoperative ward (number of surgical cases with nausea and/or vomiting) / [total number of surgical cases].	Through the stay at the PACU, an average of 3.5 hours
Postoperative Pain	Median pain score (NRS) in the postoperative ward. NRS = Numerical Rating Scale 0-10. 0 = No pain and 10 = Worst imaginable pain	Through the stay at the PACU, an average of 3.5 hours
Severe postoperative pain	Incidence of severe pain (NRS>=7) [number of surgical cases with NRS>=7] / [total number of surgical cases]. NRS = Numerical Rating Scale 0-10. 0 = No pain and 10 = Worst imaginable pain	Through the stay at the PACU, an average of 3.5 hours
Complications after surgery	Percentage of patients with complications, unplanned hospitalizations, or reoperations after 30 days and 6 months	up to 6 month

Collaborators and Investigators

• Sponsor: Umeå University
• Collaborators: Karolinska Institutet
• Investigators: Principal Investigator: Jakob Wallden, MD PhD, Umeå University

Study record dates

Study Major Dates

• Study Start (Actual): January 1, 2016
• Primary Completion (Estimated): December 31, 2027
• Study Completion (Estimated): March 1, 2028

Study Registration Dates

• First Submitted: October 5, 2023
• First Submitted That Met QC Criteria: October 11, 2023
• First Posted (Actual): October 16, 2023

Study Record Updates

• Last Update Posted (Actual): October 16, 2023
• Last Update Submitted That Met QC Criteria: October 11, 2023
• Last Verified: October 1, 2023

More Information

Terms related to this study

• Keywords: cholecystectomy
• Additional Relevant MeSH Terms: Digestive System Diseases; Pathologic Processes; Urologic Diseases; Biliary Tract Diseases; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases; Male Urogenital Diseases; Postoperative Complications; Urinary Bladder Diseases; Gallbladder Diseases
• Other Study ID Numbers: GALLSPOR

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No