Question: Why is it vital to not hyperventilate a patient receiving CPR?
Answer:
A new study has shown an inclination by emergency medical services
personnel to hyperventilate (providing too many breaths, and too deep)
patients throughout CPR of out-of-hospital cardiac arrest. A follow-up
animal study showed ventilation rates just like those in the field which
resulted in higher accrued intrathoracic (chest) pressures, decreased
coronary perfusion pressures, and reduced survival.
During
the recoil phase in CPR, a vacuum is formed inside the chest, drawing
blood back to the heart. excessive and deep ventilations mean that less
blood returns to the heart between compressions, doubtless reducing
the effectiveness of CPR.
At Carpenter CPR, we emphasize the
importance of providing breaths at proper intervals, and ONLY providing
breath until the chest just begins to rise.
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