Created at 8:56 p.m. Jun, 08, 2026
Author:
aroychow
Type of change:
Content error
Rationale for change
Isn't it the opposite? That heart rate will initially increase, and then decrease. That's what the rationale of the card says, but it's wrong in the blue answer.
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- The Valsalva maneuver increases intrathoracic pressure, thus decreasing venous return to the heart and subsequently cardiac output (and BP) → heart rate should increase to compensate via an intact baroreceptor reflex
- With release of the Valsalva maneuver (i.e., after the strain phase), venous return and BP transiently overshoot, triggering increased baroreceptor firing and reflex bradycardia, resulting in decreased HR
- The answer to this card used to be simply "increased" but was changed to include the initial phase as well; according to AMBOSS, increased HR occurs with prolonged Valsava (Dec 2025)
- With release of the Valsalva maneuver (i.e., after the strain phase), venous return and BP transiently overshoot, triggering increased baroreceptor firing and reflex bradycardia, resulting in decreased HR
- The answer to this card used to be simply "increased" but was changed to include the initial phase as well; according to AMBOSS, increased HR occurs with prolonged Valsava (Dec 2025)
Lecture Notes
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Missed Questions
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Pathoma
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Boards and Beyond
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First Aid
Sketchy
Sketchy 2
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Sketchy Extra
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Picmonic
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Pixorize
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Physeo
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Bootcamp
Watch associated Bootcamp video - Pressure and Flow Physiology : Sensory Receptors of Vasculature
OME
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Additional Resources
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One by one
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