CV Flashcards
What is the primary determinant of threshold potential?
Serum Ca+2
What is the primary determinant of RMP?
Serum K+
SVR =
(MAP - CVP)/CO x 80
EF =
(EDV-ESV)/EDV
Label the pressure-volume loop
What intervention
Iv fluid administration
What intervention
Lasix admin
What intervention
B1 stimulation
What is the cause?
Heart failure with reduced EF
What intervention
Acute HTN, neo admin
What intervention
Vasodilator (SNP)
Which artery supplies left lateral wall of LV
Circumflex
Which artery supplies the anterior wall of the LV, anterior two thirds of the septum, and a small portion of the anterior RV?
Left anterior descending
What artery supplies the posterior wall of the LV, most of the RV, and the posterior thirds of the septum?
Right coronary
The SA node receives its blood supply from?
RCA in 70% (circ the rest)
The AV node receives its blood supply from?
RCA
Normal myocardial oxygen consumption
8-10 mL/min/100g
CPP=
Aortic DBP - LVEDP
_____ is a byproduct of ATP metabolism and is a potent coronary vasodilator
Adenosine
MAP =
(1/3SBP) + (2/3DBP)
Or
[(CO x SVR)/80] + CVP
Causes of HFrEF
MI, valve insufficiency, and dilated cardiomyopathy (pump problem)
Causes of HFpEF
Myocardial ischemia, valve stenosis, hypertrophic CM (filling problem)
Anesthetic management for HF
Maintain higher afterload and slow HR
What order do CCB impair contractility (highest to lowest)
Verapamil > nifedipine > diltiazem > nicardipine
Best TEE view for diagnosing left ventricular ischemia
Midpapillary muscle level in short axis
2nd best TEE view for diagnosing left ventricular ischemia
Apical segment in short axis
What changes on the arterial waveform can be seen with aortic stenosis?
Pulses tardus (delayed slope)
Pulses parvus (small amplitude)
No dichroic notch
Aortic Stenosis
Aortic Regurgitation
What changes on arterial waveform are seen with aortic regurgitation
bisferiens pulse (biphasic systolic peaks)
List 2 causes of acute aortic insufficiency
Endocarditis (most common)
Aortic root dissection (aneurysm or trauma)
List 4 causes of chronic aortic insufficiency
- Valvular calcification
- Marfan syndrome
- Ehler-Danlos syndrome
- Ankylosing spondylitis
What is the minimal amount of time to wait for surgery after bare-metal stent?
30 days
How long after drug-eluding stent before elective surgery?
6-12 months
The IABP is positioned distal to which artery?
Left subclavian artery
Classic triad of AAA rupture
Back pain
Hypotension
Pulsatile abdominal mass
common cause of sudden nocturnal death d/t v fib/tach more common in males from Southeast Asia
Brugada syndrome
Causes defects in His-Purkinje system. Long pauses, wide QRS, & bradycardia
Lenegre’s disease
Crawford Aneurysm Type 1
Crawford Aneurysm Type 2
Crawford Aneurysm Type 3
Crawford Aneurysm Type 4
Which aortic dissection involves the ascending aorta?
