Podcast 735: End Tidal CO2 and BiPAP

<p><strong>Contributor: Aaron Lessen, MD</strong></p> <p><strong>Educational Pearls:</strong></p> <ul> <li style="font-weight: 400;" aria-level="1"><span style= "font-weight: 400;">End tidal CO2 is accurate to 1-4 mmHg in intubated patient but use with those on positive pressure ventilation like BiPAP is unclear</span></li> <li style="font-weight: 400;" aria-level="1"><span style= "font-weight: 400;">Study looked at patients on BiPAP for COPD or CHF and found end tidal CO2 measurements were significantly underestimated when compared to VBG levels</span></li> <li style="font-weight: 400;" aria-level="1"><span style= "font-weight: 400;">End tidal CO2 measurements for those on positive pressure ventilation appears to be inaccurate</span></li> </ul> <p><strong>References</strong></p> <p><span style="font-weight: 400;">Uzunay H, Selvi F, Bedel C, Karakoyun OF. Comparison of ETCO2 Value and Blood Gas PCO2 Value of Patients Receiving Non-invasive Mechanical Ventilation Treatment in Emergency Department [published online ahead of print, 2021 Apr 27]. SN Compr Clin Med. 2021;1-5. doi:10.1007/s42399-021-00935-y</span></p> <p><span style="font-weight: 400;">Casati A, Gallioli G, Scandroglio M, Passaretta R, Borghi B, Torri G. Accuracy of end-tidal carbon dioxide monitoring using the NBP-75 microstream capnometer. A study in intubated ventilated and spontaneously breathing nonintubated patients. Eur J Anaesthesiol. 2000;17(10):622-626. doi:10.1046/j.1365-2346.2000.00731.x</span></p> <p><em><span style="font-weight: 400;">Summarized by John Spartz, MS4 | Edited by Erik Verzemnieks, MD</span></em></p> <p> </p> <p><span style="font-weight: 400;">The Emergency Medical Minute is excited to announce that we are now offering</span> <em><span style="font-weight: 400;">AMA PRA Category 1 credits™</span></em> <span style="font-weight: 400;">via online course modules. To access these and for more information, visit our website at</span> <a href= "https://emergencymedicalminute.org/cme-courses/"><span style= "font-weight: 400;">https://