Positioning of double-lumen tubes based on the minimum peak inspiratory pressure difference between the right and left lungs in short patients: a prospective observational study.
Eur J Anaesthesiol 2014;
31:137-42. [PMID:
24047768 DOI:
10.1097/eja.0b013e328364c3a7]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND
Peak inspiratory pressures (PIPs) during one-lung ventilation (OLV) have served as a clinical marker that could indirectly verify the proper positioning of double-lumen tubes (DLTs). Patients of short stature are highly susceptible to initial DLT malpositioning.
OBJECTIVES
We investigated the usefulness of positioning left-sided DLTs using minimum PIP differences between the right and left lungs by comparing with the previously used method of auscultation without fibreoptic bronchoscopy (FOB). We also evaluated the difference in PIPs between the two lungs during OLV after the DLT was ideally positioned with FOB examination.
DESIGN
Prospective, observational study.
SETTING
A university hospital.
PATIENTS
One hundred and two female patients of short stature (≤160 cm).
INTERVENTIONS
Verification of DLT position was conducted by three sequential steps: auscultation; minimising the difference in PIP during each OLV; and verifying the resulting position by FOB.
MAIN OUTCOME MEASUREMENTS
Fibreoptic bronchoscopic view results of DLT position followed by the position adjustment using the minimum PIP difference method.
RESULTS
Repositioning the DLT using the minimum PIP difference led to clinically successful positioning of the DLT in 88% of patients and a more ideal placement of the tube than auscultation alone (69.6 vs. 11.8%, P <0.001). Additionally, the ideal position of DLTs verified by FOB showed that PIP differences were zero or ±1 mmHg in 93% of patients.
CONCLUSION
Positioning the DLT based on the minimum PIP difference between the right and left lungs as a supplementation to routine auscultation serves as an easy and reliable method for DLT positioning and may improve the accuracy of DLT positioning as an adjuvant to FOB in short patients.
TRIAL REGISTRATION
Clinicaltrial.gov identifier: NCT01533012.
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