Capnography is the measurement of the partial pressure of exhaled CO2 and is an indirect measurement of your cellular respiration. It is displayed visually as a block-like waveform during the exhalation phase of respiration and monitors ventilation in real-time. Capnography is the gold standard for monitoring sedated and intubated patients in the hospital and the field and can be used in many other situations to discern more information about your patient.
Our host Jordan Ourada is joined by Dr. Eric Hill who is a board certified Emergency Physician, EMS Director for 9 agencies around Colorado, a retired military physician with the Army, former paramedic firefighter and combat veteran to discuss advanced applications of capnography to monitor a range of different patients in the pre-hospital setting. Tune in to learn how to apply capnography to monitor your patients and detect serious conditions like sepsis and DKA and initiate time-sensitive interventions that reduce mortality in patients.
Quick Educational Pearls:
- Normal range is between 35 – 45 mmHg
- Low capnography indicates they are blowing off CO2
- High capnography indicates they are retaining CO2
- Normal waveform morphology is box-like with gradual expiratory plateau after expiratory upstroke
- Monitor your patient’s status and interpret the capnography numbers, rate and waveforms accordingly
1:32 Capnography definition
6:36 Normal range
7:40 Reading capnography waveforms
12:36 Capnography monitoring in sedated/intubated patients
13:36 Intubation monitoring
18:03 VQ match vs mismatch
21:42 Asthmatic patients
24:30 Capnography cannula
26:24 Cardiac arrest uses
31:28 Acid-base physiology
37:28 Diabetic patients
40:15 COPD patients
41:42 CHF patients
45:18 Head injury patients
52:07 Sepsis detection and subsequent prehospital management
1:08:15 Closing thoughts on using capnography in the field
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