Heated Circuit for One-lung Ventilation

Keimyung University Dongsan Medical Center104 enrolled

Overview

One-lung ventilation interrupts oxygenation. The effect of heated humidifed breathing circuit on arterial oxygenation during one-lung ventilation has not been investigated. The investigators will investigate the effect of the heated humidifed breathing circuit on oxygenation during one-lung ventilation in patients undergoing thoracoscopic surgery.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

TRIPLE

Enrollment

104

Conditions

One-lung Ventilation Oxygenation Temperature

Interventions

Heated and humidified breathing circuit onDEVICE

Heated and humidified breathing circuit will be turned on.

Heated and humidified breathing circuit offDEVICE

Heated and humidified breathing circuit will be turned off.

Eligibility

Sex: ALLMin age: 19 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: * American Society of Anesthesiologist class I-II * Patients scheduled for one-lung ventilation for thoracoscopic surgery Exclusion Criteria: * Obesity * Severe obstructive or restrictive lung disease * Preoperative oxygen supply * Preoperative intubated state or under mechanical ventilatory support * Baseline arterial partial pressure of oxygen (PaO2) \< 70 mmHg * Symptomatic coronary or peripheral arterial disease * Renal failure * Preoperative continuous infusion of inotropes or vasopressor * Pregnancy

Outcomes

Primary Outcomes

Arterial oxygenation

Arterial oxygenation (mmHg) will be measured by arterial blood analysis.

Time frame: At 30 minutes after one-lung ventilation

Secondary Outcomes

Arterial oxygenation

Arterial oxygenation (mmHg) will be measured by arterial blood analysis.

Time frame: At 0, 15, 45, and 60 minutes after one-lung ventilation

Mean arterial pressure

Mean arterial pressure (mmHg) will be measured.