Review of heart anatomy Flashcards
Large P wave
Enlarged atria
Enlarged R wave
Enlarged ventricles
Flat T wave
Ventricles aren’t getting enough O2 (coronary artery disease)
Enlarged Q dip
Cardiac infarction (heart attack)
Long PQR interval
Scar tissue
Long QT
Ventricular damage
Tachycardia
rapid heart rate - heart isn’t beating effectively, so has to beat faster to make up. hyperthyroidism, high temperature
Bradycardia
Slow heart rate - heart is beating slowly, indicative of buildup of lipids in carotid - tricks baroreceptors into thinking that BP has risen
1st degree block
Distance between P and R is lengthened
2nd degree block
Multiple P waves -> can lead to A-Fib
3rd degree block
Complete block - totally out of sync, can live, but not well. Ventricular conduction system takes over - much slower.
Medulla regulation centers (3)
- Cardioaccceleratory
- Cardioinhibitory
- Vasomotor
Cardioacceletory and cardioinhibitory affect what?
Cardiac output
Vasomotor affects
BP by vasoconstriction/dilation
How does vasomotor get input?
Baroreceptors