STEP2: CARDS DRUGS

Question 1

Negative chronotropy does what

Answer 1

slows HR to increase LV filling time and LV end-diastolic volume

Question 2

Negative inotropy

Answer 2

reduces LV contractility to allow systolic blood ejection to complete at a higher LV blood volume

Question 3

Chronotropic

Answer 3

The ability to influence heart rate. Positively chronotropic drugs (e.g., adrenaline) increase heart rate, while negatively chronotropic drugs (e.g., beta blockers) decrease heart rate.

Question 4

Inotropy

Answer 4

The ability to influence the force of cardiac muscle contraction. Positively inotropic drugs (e.g., catecholamines) increase the force of contraction, while negatively inotropic drugs (e.g., beta blockers) decrease the force of contraction.