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Assessing the impact of comorbidities on postoperative complications.

The Role of Concomitant Diseases in Postoperative Complications Risk Stratification - a Prospective Observational Multi-center Cohort Study

Observational Russian Federation of Anesthesiologists and Reanimatologists · NCT03945968

This study looks at how having other health issues affects the chances of complications after abdominal surgery to help doctors better understand and manage risks for their patients.

Quick facts

Study typeObservational
Enrollment16000 (estimated)
Ages18 Years and up
SexAll
SponsorRussian Federation of Anesthesiologists and Reanimatologists Academic / other
Locations38 sites (Arkhangelsk and 37 other locations)
Trial IDNCT03945968 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the prevalence and structure of comorbidities among patients undergoing abdominal surgery. It seeks to stratify the risk of postoperative complications by identifying independent predictors that contribute to these risks. By analyzing a large cohort of surgical patients, the study will provide insights into how concomitant diseases affect surgical outcomes and mortality rates. The findings could help in developing better risk assessment tools for anesthesiologists and surgeons.

Who should consider this trial

Good fit: Ideal candidates for this study are patients scheduled for abdominal surgery with an ASA physical status class of 1-3.

Not a fit: Patients with acute conditions such as massive blood loss, bronchospasm, or anaphylactic reactions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved risk stratification and management of patients undergoing surgery, potentially reducing postoperative complications.

How similar studies have performed: Previous studies have indicated the importance of comorbidities in surgical outcomes, suggesting that this approach has been validated in other contexts.

Eligibility criteria

Show full inclusion / exclusion criteria 
Inclusion Criteria:

* surgical interventions on the abdominal organs,
* 1-3 ASA physical status class

Exclusion Criteria:

* the inability to assess the factors included in the study,
* acute massive blood loss, aspiration,
* bronchospasm,
* anaphylactic reactions,
* malignant hyperthermia

Where this trial is running

Arkhangelsk and 37 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.