Comparison of Postoperative Pulmonary Complications Between Smokers and Nonsmokers

Launched by MEHMET ÖZKILIÇ · May 13, 2025

Keywords

ClinConnect Summary

This clinical trial is studying how smoking affects breathing problems after abdominal surgery. Researchers want to see if smokers experience more coughs, mucus buildup, or wheezing in the first day after their surgery compared to non-smokers. Participants will be divided into two groups: those who currently smoke and those who don’t. By collecting information on symptoms and oxygen levels, the study aims to understand if smoking leads to more respiratory issues after surgery.

To participate, you need to be between 18 and 60 years old, scheduled for elective abdominal surgery, and able to give consent. You should either currently smoke a certain amount or have never smoked or quit over a year ago. However, if you have chronic lung diseases, recent respiratory infections, or certain other health conditions, you may not be eligible. If you join the study, you’ll help researchers learn more about how smoking impacts recovery, which could lead to better care for future patients.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Age between 18 and 65 years
• • Undergoing elective abdominal surgery under general anesthesia
• • ASA physical status I-II-III
• • Able to provide informed consent
• • Classified as either active smoker (≥10 pack-years) or nonsmoker (never smoked or quit \>1 year ago)
• Exclusion Criteria:
• • Diagnosed chronic pulmonary disease (e.g., Obstructive Sleep Apnea, asthma, Chronic Obstructive Pulmonary Disease)
• • Acute respiratory tract infection within the past 30 days
• • Morbid obesity (Body Mass Index \>35 kg/m²)
• • Emergency surgery
• • Pregnancy or breastfeeding
• • Refusal to participate