"FRENZEL MANEUVER" Part#02
Frenzel maneuver was invented by Herman Frenzel, a German ENT officer of the Luftwaffe,
as a safe maneuver for Stukas pilots, whose vertical descend resembles diving.
This maneuver, also known as throat piston,
is more gentle than Valsalva and avoids most of her contraindications.
Therefore, her use is strongly suggested against Valsalva.
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