Intermittent capnography during high‐frequency jet ventilation for prolonged rigid bronchoscopy

Abstract

Capnography performed during short periods of HFJV discontinuation reliably and noninvasively reflects PaCO2 during prolonged endoscopic procedures. Capnography during HFJV for RBS may reduce the frequency of arterial blood gas sampling, the duration of unmonitored intervals and costs.

Comparison of transcutaneous and endtidal CO2‐monitoring for rigid bronchoscopy during high‐frequency jet ventilation

“…The results by Bland and Altman testing show close limits of agreement and a low bias with no significant differences during the steady‐state and dynamic phases. These findings are similar to the results published by other authors during rigid bronchoscopy (11, 12, 17) and other procedures (13, 14, 20). Valid readings of endtidal pCO2 are only possible during NFJV.…”

High-frequency jet ventilation in interventional bronchoscopy: factors with predictive value on high-frequency jet ventilation complications

“…raphy during HFJV has been considered a reliable and sufficiently accurate method for monitoring ventilatory efficiency [10,11,15,16]. Incidence of hypoxemia in our study was higher than that observed by Hautmann et al [7].…”

“…End-expiratory CO 2 partial pressure (P Et co 2 ) was measured with a catheter inserted through the main lumen of the rigid bronchoscope using the bsinglebreathQ method. This method consists of temporally stopping HFJV and manually activating the jet generator for a single pulse no longer than 20 seconds [10,11]. This process was repeated three times and average was calculated.…”

Anesthesia for interventional pulmonology procedures: a review of advanced diagnostic and therapeutic bronchoscopy

“…124 Although some patients will require an arterial cannula to monitor arterial gases, the adequate use of capnography may reduce unnecessary arterial blood gas sampling. 125 Recommendations to prevent barotrauma include maintaining a driving pressure around 1.5 bar (approximately 20 PSI) and limiting inspiration duration to 30-40% of the respiratory cycle. 89 Pressure parameters may be adjusted by targeting a maximum PEEP of 10 cmH 2 O, especially when treating patients with severe central airway obstruction, as high auto-PEEP might develop, causing barotrauma.…”