Cardiac Cycle and Output Flashcards Preview

[OS 205] Thorax > Cardiac Cycle and Output > Flashcards

Flashcards in Cardiac Cycle and Output Deck (12)
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1
Q

B-1 Adrenergic Agonist

A

NAME?

2
Q

Xanthines

A
  • Inhibit phosphodiesterase that breaks down cAMP, increasing time Ca2+ channels are open
3
Q

Catecholamine

A
  • Increases Ca2+ ATPase activity in the SR
4
Q

Digitalis

A
  • Inhibits Na-K ATPase in sarcolemma- Lowers Na gradient for Na-Ca exchange
5
Q

Aortic Stenosis1. Systole or Diastole?2. Effects

A
  1. Systolic ejection murmor due to high frequency and volume of blood flow2. Left ventricle hypertrophy
6
Q

Aortic Insufficiency1. Systole or Diastole?2. Effects

A
  1. Early diastolic murmur, high-pitched “blowing”2. Reduced output by hypertrophy and dilation
7
Q

Cardiac Decompensation1. When does it occur2. Effects3. What can occur

A
  1. Late stages of aortic stenosis/insufficiency2. Left ventricle dilates and cardiac output falls3. Myocardial Ischemia
8
Q

Mitral Stenosis1. Systole or Diastole?2. Cause?

A
  1. “Rumbling” Diastolic sound2. Caused by flow of blood through a narrowed mitral valve from LA -> LV- Results as a calcification of the mitral valve
9
Q

Mitral Valve Prolapse1. Systole or Diastole?2. Effects?

A
  1. Systolic Murmur2. Leakage of blood back to LA
10
Q

Left - Right Shunt1. Describe2. With or Without Cyanosis3. Possible Consequence

A
  1. Flow of oxygenated blood from left-sided chamber to right2. No cyanosis3. May cause congestion/heart failure
11
Q

Right-Left Shunt1. Describe

A

Flow of deoxygenated blood from right side of the heart to the left

12
Q

Tetralogy of Fallot

A
  1. Ventricular Septal Defect2. Narrowing of Pulmonary Outflow Tract3. Overriding Aorta4. Right Ventricular Hypertrophy