Cardiovascular System — Flashcards

Flashcard 141: Effect of valvular diseases on PV loop:The pressure-volume curve is shifted to the right and is wide and tall in _____

Answer: Aortic regurgitation

Flashcard 142: The normal portal venous pressure is _____ mmHg

Answer: 5 to 10

Flashcard 143: _____ waves are due to the variation of arterial pressure due to reflex changes in nervous control of blood pressure

Answer: Mayer

Flashcard 144: Bainbridge Reflex is the _____cardia in response to right atrial distension.

Answer: tachy

Flashcard 145: In abdominal compartment syndrome, central venous pressure _____

Answer: increases

Flashcard 146: When the skin is stroked firmly with a pointed instrument, the triple response (also k/a _____), is seen.

Answer: Lewis triple response

Flashcard 147: _____ means intermittent contraction of metarterioles and precapillary sphincters.

Answer: Vasomotion

Flashcard 148: 'c' waves are produced by bulging of the tricuspid valve into the right atrium during the _____ of the right ventricle.

Answer: Iso-volumetric contraction (phase)

Flashcard 149: Functional closure of the fetal circulatory adjustments occurs in the following sequence: _____

Answer: Foramen ovale > Ductus venosus > Ductus arteriosus

Extra: **Functional closure timing:** - **Foramen ovale:** Immediate (seconds) – due to increased left atrial pressure. - **Ductus venosus:** Minutes (10–30 mins) – due to constriction of its muscular wall. - **Ductus arteriosus:** 10–15 hours – due to increased oxygen and decreased prostaglandins. **Anatomical closure timing:** - **Ductus venosus:** 3–7 days (becomes Ligamentum venosum). - **Ductus arteriosus:** 2–3 weeks (becomes Ligamentum arteriosum). - **Foramen ovale:** ~1 year (becomes Fossa ovalis).

Flashcard 150: Modified Shock Index is calculated using?_____

Answer: HR/MAP