CV Lecture Flashcards
What is the MC chief complaint for cardiac events?
Chest pain
What is the true symptom of CV disease?
Angina pectoris
What is angina pectoris?
- Crushing, squeezing chest pain
- Usually on exertion
- True symptom of CVD
Define preload
End diastolic volume at the beginning of systole directly related to stretch (Starling’s law)
Define stroke volume
Volume of blood pumped from one ventricle of the heart with each beat
Define afterload
Amount of resistance that the L side of the heart has to overcome to eject blood (“squeeze”)
How can fever affect HR and respirations?
Increases both
How can hypothermia affect HR and respirations?
Decreases both
How do you directly measure blood pressure?
Insertion of intra-arterial catheter (A-line)
How do you indirectly measure BP?
BP cuff and stethoscope
What can happen to BP if cuff is too small?
Falsely elevated
What BP finding indicates supravalvular aortic stenosis?
Difference in BP of 20+ mmHg between arms
What BP finding indicates coarctation of aorta?
- If BP is high in both arms, take BP in the legs
- If legs have lower BP, then could be coarctation of aorta
What does jugular venous pulse reflect?
RA pressure
What are the components of a jugular venous pulsation?
a wave
x descent
v wave
y descent
What is the “a” wave?
- Part of JVP
- Atrial contraction
- Reflects slight rise in atrial pressure that accompanies contraction
- Occurs before S1 and carotid pulse
What is the “x descent”?
- Part of JVP
- Atrial relaxation
- Ventricles contract
What is the “v wave”?
- Part of JVP
- Venous filling
- Atria begin to fill
What is the “y descent”?
- Part of JVP
- Atria empty
- Blood flows into RV
What does the hepatojugular reflex assess?
RV function
Why does the hepatojugular reflex occur?
Inability of R side of heart to accommodate increased venous return
What is the normal response of hepatojugular reflex?
Jugular veins show a transient increase during first few cardiac cycles of compression followed by a fall to baseline
What are the different types of carotid upstroke?
- Brisk (normal)
- Delayed (possible AS)
- Bounding (possible AR)
Use finger pads to palpate for ____ in the CV PE
Heaves or lifts
Use ball of hand to palpate for ____ in the CV PE
Thrills
What is a laterally displaced PMI suggestive of?
Cardiomegaly
The PMI can be described as:
- Tapping (normal)
- Sustained (suggests LV hypertrophy from HTN or AS)
- Diffuse (suggests dilated ventricle from CHF or cardiomyopathy)
In the L lat decubitus position, a PMI 3+ cm is an indicator of:
LV enlargement
If the PMI is displaced to the right, this may indicate:
RV hypertrophy
How may the PMI present in a COPD patient?
Felt in the epigastrium
If the PMI is palpated in the normal position in a COPD patient, what can this indicate?
Cardiomegaly