06/23/2022
Does the BVM you use have any way of controlling for volume, pressure, or frequency during manual ventilation?
Why are these 3 factors important?
Without ventilation feedback mechanisms complications occur:
- Stomach insufflation with subsequent aspiration
- Damage to lung parenchyma including pneumothorax
- Hemodynamic and pulmonary compromise
- Decreased oxygenation to tissues
- CO2 retention and hyperventilation
A group of EMS researchers from Memphis conducted a study to look at how EMS professionals utilize a BVM?
The study was conducted at the EMS World Expo (New Orleans, Louisiana, October 14–19, 2019) and EMS Today (Tampa, Florida, March 2–6, 2020) conferences to evaluate 199 EMS clinicians performing ventilation with a BVM connected to an ET Tube. The average experience ventilating with a BVM was 16.2 years.
What did they find?
*82.9% of clinicians delivered breaths over the gastric insufflation threshold of 22 cmH2O or a breath that exceeded the recommended 560 mL.
*15% of clinicians delivered at least one breath at a peak pressure over 50 cmH2O (over 50 cmH2O is associated with increased risk of alveolar rupture during mechanical ventilation).
*Clinicians using two hands ventilated 115 mL more and at a pressure 8.9 cmH20 higher than those using one hand.
*Professional experience, hand size, and grip strength did not affect ventilation performance.
Read the full study here:
http://ow.ly/VhBu50JxGpE