CVS Flashcards
New Q waves in leads V1, V2
Which vessel is occluded?
Left Anterior Descending (LAD) branch
New Q waves in leads V2, V3, V4
Which vessel?
Left Anterior Descending (LAD)
New Q waves in leads I, aVL, V5, V6
Which vessel?
Left Anterior Descending (LAD) branch
or
Circumflex (the other branch of the L Main Coronary a.)
Posterior wall infarct: EKG changes
ST depressions at V1-V3 (anterior leads)
ST elevations at II, III, aVF (inferior leads) if the inferior wall is involved
Q waves in II, III, and aVF
Which vessels could be occluded?
Posterior Descending (PD) branch
or
Marginal branch
(Both branches of the R coronary a.)
Indications for ICDs
EF < 35%
=|>40 days post MI
Class 2,3 Sx despite Tx
Key difference in indications (there’s just one) for cardiac resynchronization therapy vs ICD indications
Same as ICD’s except CRT requires prolonged QRS > .120
Side effects of digoxin toxicity
Nausea/vomiting/anorexia
Bidirectional Vtach and accelerated junctional rhythms (both of which are very specific)
*Digoxin has a very low/narrow therapeutic window.
New onset S4, hypotension, tachycardia, EKG: new Q waves, LBBB
-Dx?
MI
Troponin levels after acute MI
Start ⬆️: 2-3 hrs
PEAK: 24-48 hrs
Normal: 1 week
Mean Arterial Pressure
- equation
- normal values
MAP=DBP+1/3PP
Normal: 70-105
Left upper sternal border murmur with a wide, fixed split S2 in a 2 yo
ASD
- if asymptomatic, just needs antibiotics before dental work or surgery
- if symptomatic surgical repair is indicated
Risk factors for condition:
One-year-old with wide pulse pressure, bounding pulses and a continuous, loud murmur at the left upper sternal border
Prematurity
First trimester maternal rubella
High altitude
(confirm diagnosis of PDA with angiography)
Child with ToF. What can use to keep the PDA open? What other treatments are indicated?
PgE keeps the PDA open
Other: O2, propranolol, knee-to-chest positioning during cyanotic episodes
Initial treatment for heart failure (initial two drugs)
Lasix and ACE-Inhibitor
