Cardiovascular Part 2 Flashcards
1
Q
Arrhythmia
A
- irregular heartbeat
- caused by a defect in the conduction system
- premature contractions in atria or ventricles
2
Q
Fibrillation
A
rapid and irregular (usually out of phase) contraction
SA node is no longer controlling myocardium
3
Q
Atrial fib
A
clotting (embolus)= inefficient filling of ventricles
4
Q
Ventricular fib
A
pump without filling= reduced/zero circulation
5
Q
If AV node is damaged
A
Heart block
No communication between
atria and ventricles
Treated with a pacemaker
6
Q
Systole
A
Contraction phase
Two periods:
1. Isovolumetric
(unchanging volume)
2. Ejection
7
Q
Diastole
A
Relaxation phase
Two periods:
3. Isovolumetric
4. Ventricular filling
8
Q
Heart murmurs
A
Turbulent
* Obstruction
* Generates sound waves
9
Q
Stenotic
A
High pitched sound or a
click
10
Q
Insufficient
A
swish
