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Effects of Positive End-Expiratory Pressure on Biventricular Function During One-Lung Ventilation

NCT02483806 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 36

Last updated 2017-12-28

No results posted yet for this study

Summary

One lung ventilation (OLV) is essential during thoracic surgery. During OLV, intrapulmonary shunt can be increased resulting hypoxemia. Wang et al measured intrapulmonary shunt by transesophageal echocardiography. Although OLV technique had been advanced so far, hypoxemia during OLV reaches about 10% in spite of inspired oxygen fraction 100%. Applying PEEP(Positive End-expiratory Pressure) at dependent lung and CPAP at non-dependent lung can mitigate the hypoxemia. Above all, PEEP can be easily applicable. However, there are controversial studies whether it is supportive or not. In this prospective, cross-over study, the investigators are planning to investigate the effects of PEEP on intrapulmonary shunt, oxygenation and cardiac function as well.

Conditions

Interventions

PROCEDURE

PEEP

After induction of anesthesia, including insertion of TEE probe, change position from supine to lateral position. Measure ABGA and cardiac indices for the baseline value. Apply each PEEP (0, 5, 10 cmH2O) serially at the random order. 6 sequences (0-\>5-\>10, 0-\>10-\>5, 5-\>10-\>0, 5-\>0-\>10, 10-\>5-\>0, 10-\>0-\>5) are equally applied to 6 patients (total 6x6=36 patients) who agreed to this study. Measure ABGA and cardiac indices after 20 min at each step of peep apply(3 times).

Sponsors & Collaborators

  • Yonsei University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
40 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2015-06-29
Primary Completion
2016-05-25
Completion
2016-05-25

Countries

  • South Korea

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02483806 on ClinicalTrials.gov