Cardiovascular system Flashcards
1
Q
Why is AFib with RVR so detrimental to patients with severe AS?
A
They are dependent on LV filling to maintain cardiac output, and AFib with RVR gives less filling time and loss of the atrial kick.
2
Q
How much does atrial systole contribute to ventricular filling?
A
5-20% at resting HR
3
Q
What anticoagulant can be used instead of heparin in patients with HIT who require cardiopulmonary bypass?
A
Argatroban
4
Q
What is the greatest determinant of myocardial oxygen demand?
A
Heart rate
5
Q
What is the induction agent of choice in cardiac tamponade?
A
Ketamine
