Lung Ultrasound for the Detection of Pulmonary Atelectasis in the Perioperative Period
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Postoperative Pulmonary Atelectases
- Sponsor
- Medical University of Vienna
- Enrollment
- 25
- Locations
- 1
- Primary Endpoint
- Correlation between evidence of atelectasis in lung ultrasound and evidence of atelectasis in electric impedance tomography
- Status
- Active, not recruiting
- Last Updated
- 3 years ago
Overview
Brief Summary
Atelectases (collapsed lung areas) of 15-20% of total lung occur in up to 90% of patients who are anaesthetized and intubated. The goal of the present prospective study is to detect atelectatic areas in the perioperative period in the lungs of patients undergoing elective laparoscopic surgery non-invasively and without x-ray exposure. Results of lung ultrasound (LUS) as the experimental method will be compared to the results of Electrical Impedance Tomography (EIT) as the reference technique for the detection of atelectasis. A device for peripheral Oxygen saturation measurement (MASIMO Radical-8) will detect changes in ventilation. The investigators want to confirm or disprove former findings of the appearance of intraoperative atelectases and to prove that ultrasound is a valid tool for detection of atelectases.
Investigators
Dr. Roman Ullrich
MD
Medical University of Vienna
Eligibility Criteria
Inclusion Criteria
- •Male or female,
- •age 18 - 75
- •BMI \< 30
- •Laparoscopic operation
Exclusion Criteria
- •Pregnancy
- •Pulmonary infection
- •Chronic pulmonary diseases
- •Morbid Obesity
Outcomes
Primary Outcomes
Correlation between evidence of atelectasis in lung ultrasound and evidence of atelectasis in electric impedance tomography
Time Frame: on the day of laparoscopic surgery, expected average 2 hours in total
Measurements, requiring 5 minutes each, are performed before induction of anaesthesia, after intubation, immediately before extubation and immediately after extubation. Outcome measure: comparison of how often atelectases are detected by lung ultrasound (experimental method) versus by electric impedance tomography (standard method)
Secondary Outcomes
- respiratory variability of oxygen saturation(on the day of laparoscopic surgery, expected average 2 hours in total)