Impact of Spontaneous Breathing on Ventilation Distribution in Obese Patients

• Conditions: Obesity; Hip Arthroplasty; General Anesthesia; Spinal Anesthesia; Atelectasis

• Registration Number: NCT01382927
• Lead Sponsor: Technische Universität Dresden

Brief Summary

General anesthesia (GA) and paralysis are factors which facilitate atelectasis formation, especially in obese patients. Spontaneous breathing can reduce the amount of atelectasis. In this study, the investigators are comaparing obese patients undergoing hip arthroplasty in GA versus spinal anesthesia. Distribution of ventilation during and after anesthesia is assessed by eletrical impedance tomography (EIT).

Detailed Description

Not available

Study Timeline

• Study Start: 2011-04
• Status Verified: 2011-06
• Study First Submitted: 2011-06-22
• Study First Submitted QC: 2011-06-24
• Last Update Submitted: 2011-06-24
• Study First Posted: 2011-06-27
• Last Update Posted: 2011-06-27

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 16

Inclusion Criteria

• BMI >30
• age 18-85
• elective hip arthroplasty in general anesthesia or spinal anesthesia

Exclusion Criteria

• pregnancy/breastfeeding
• allergies against drugs used for the anesthesia
• contraindications for EIT
• severe cardiac or pulmonary comorbidities
• unable to consent or understand/follow study

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
arterial pO2 on room air	24hrs
Center of Ventilation	24hrs	measured by EIT

Secondary Outcome Measures

Name	Time	Method
Peak Flow	24hrs

Trial Locations

Locations (1)

University Hospital Carl-Gustav-Carus; 🇩🇪 Dresden, Germany