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NCT Number: NCT02124499

Genetic Variants and Perioperative Morbidity and Mortality

Prospective association study to analyse perioperative patients' outcome. Outcome comprises intraoperative and postoperative complications e.g. cardio-vascular events, allergic reactions, Possible variables which might have on influence: patient- and surgery-related data, patients' genetic background etc.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Department of Anaesthesiology and Pain Medicine, Inselspital, University of Bern

Bern, 3010, Switzerland

Location status: Recruiting

Location contact

Anneliese Hoffmann, PhD

CONTACT

[email protected]

0041-316328872

Frank Stüber, Professor MD

CONTACT

[email protected]

041-316322483

Ulrike M Stamer, MD

SUB_INVESTIGATOR

About this study

Background Anesthesia and surgery are related to unwanted adverse events, side effects and postoperative discomfort. Whereas severe complications like cardiovascular events are rare, postoperative side effects like nausea and vomiting, pain, long-lasting pain and pain related interference of daily activities are frequent. The question arises which patient is at specific risk for this sequelae. Pre-exiting predisposing factors (e.g. patients' genetic background), surgery and anesthesia related variables (drugs, techniques administered for anesthesia and analgesia) as well as psychological and social factors might influence the outcome.

In this prospective association study these variables will be investigated in a well-described patient cohort presenting for elective surgery.

Objective

The aim of this study is to associate perioperative and postoperative complications and side effects as well as long-term outcome after surgery to patient- and surgery-related variables, including genetic variants.

Methods

Prospective association study performed in two independent patient cohorts.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 18 years and older
  • Written informed consent
  • Scheduled surgery

Exclusion criteria

  • No informed consent
  • Cognitive impairment

Treatment and study plan

Primary outcomes

  1. Postoperative nausea and vomiting (PONV)

    Time frame: Up to 48 hours after surgery

    Percent of patients with no PONV, medium PONV and severe PONV PONV outcome measured by a composite score: number of episodes of vomiting + severity of nausea (NRS score) + need for antiemetic treatment Patients with no PONV are compared to those with intermediate and severe PONV

Secondary outcomes

  1. Pain related impairment after surgery

    Time frame: up to 2 days after surgery

    Measured by the International Pain Outcomes Questionnaire

  2. Pain related impairment of patients with chronic pain after surgery versus patients without chronic pain after surgery

    Time frame: up to one year after surgery

    Measured by the Brief Pain Inventory (BPI)

  3. Cardio-vascular events after surgery

    Time frame: Up to 30 days after surgery

    Measured by a score for major adverse cardiac events (MACE)

  4. Pain related impairment of patients with chronic neuropathic pain (DN4 positive) after surgery versus patients without neuropathic pain after surgery

    Time frame: up to one year after surgery

    Measured by the Brief Pain Inventory (BPI)

  5. What influences pain related impairment after bariatric surgery

    Time frame: up to 1 year after surgery

    Measurement of patient reported outcome by the BPI (Brief Pain Inventory).

Study contacts

Contact information is provided by the study sponsor or research team.

Markus Lüdi, MD

CONTACT

[email protected]

0041-316323965

Ulrike M Stamer, Prof. MD

CONTACT

[email protected]

0041-316329995

Sponsors and collaborators

Lead sponsor

Insel Gruppe AG, University Hospital Bern

Other

Registry information

Important dates

Study start
2011
Primary completion
2027
Study completion
2027
First posted
Apr 28, 2014
Registry last updated
Jan 7, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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