Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
Define stroke volume, end-diastolic and end-systolic volumes
|
- End-systolic volume = volume of blood in the ventricles after systole
- End-diastolic volume = volume of blood in the ventricle at the end of diastole - Stroke volume = end diastolic volume - end systolic volume - The ejection fraction is usually >55% of diastolic volume in health |
|
What is the Bainbridge reflex?
|
- Typifies the role of the medulla of the brain in cardiovascular reflexes
- If stretch is too great then heart rate must be increased to avoid rupture to maintain output |
|
What are the effects on renin secretion during hemorrhage?
|
|
|
What are the 3 types of tachycardia?
|
1. Sinus = all appears normal but slow
2. Narrow complex = QRS very short 3. Broad complex = QRS very long (also known as ventricular tachycardia) |
|
What are the 2 types of 2nd degree heart block and how can they be determined on an ECG?
|
1. Mobitz type II
- Regularly irregular - There is a constant normal PR interval, but there are isolated P waves without following QRS complexes - Every second or third etc P wave is followed by a QRS 2. Mobitz type I (Wenkebach) - Common in atrial fibrillation or flutter - Irregularly irregular - The PR interval progressively increases and then there is one isolated P wave without a following QRS complex, felt as a skipped beat, before beginning again |