Lectures Flashcards
Pain control of choice for appendicitis
Morphine (.1mg/kg) and repeat as needed
-usually start giving 4mg (that’s underdosing)
Don’t give NSAIDs b/c increase bleeding
To r/o ACS how often do we recycle trops
After first trop, recycle in 6 hours
How to medically optimize an ACS patient who doesn’t go to cath lab
Aspirin, statin, BP control
Management for NSTEMI
Depends on CP and stability of pt
Stable NSTEMI w/o continuing CP = contraindicated to emergent cath!!! (will probs find no vessel disease), so medically optimize
Stable NSTEMI w/ ongoing CP => emergent cath
Unstable NSTEMI => emergent cath
Aortic dissection
(a) physical exam findings
(b) CXR
(c) US
Aortic dissection- tearing CP radiating towards the back
(a) Disparate pulses, muffled heart sounds
(b) CXR: widened mediastinum (not in all, just classically)
(c) US findings: dilated aortic root (over 4cm), potentially pericardial effusion
- if dissection involves the ascending aorta, it can back track into the pericardium
What is a Q-wave on EKG?
(a) When is it pathologic?
Q-wave is a the first downward reflection in ventricular depolarization before the R-wave
(a) Pathologic (indicative of old infarct) if height is greater than 1/4 height of the R-wave
Describe normal direction of T-wave
Physiologic T-waves go in the same direction as the QRS complex
-exception is LBBB when T waves are physiologically inverted (don’t indicate ischemia)
Describe pneumonic for reciprocal changes
PAILS
In a posterior MI you’d expect ST depressions in anterior leads => V2/V4 depressions make you concerned for posterior MI
What may ST elevations in aVR indicate?
ST elevation sin aVR can indicate proximal LAD occlusion or really extensive (3 vessel) disease
EKG findings indicative of critical LAD stenosis
Critical LAD stenosis can show on EKG by Wellens syndrome = deep T-wave inversions in V2/V3 (T-wave inversions in anterior leads)
Where would expect to see reciprocal changes in an anterior MI
LAD occlusion (anterior MI)- expect reciprocal ST depressions in inferior leads
When in ACS do you not give nitro?
Don’t give nitro if you’re worried about inferior MI b/c 40% of cases of inferior MI have right heart involvement
What is Sgarbosa’s criteria used to determine?
Determine if there is ST elevations on top of a LBBB
-hard to tell if it’s just a LBBB or if theres elevations
EKG findings of PE
Tachycardia
E/o right heart strain
- RBBB
- S1Q3T3: S wave in I, Q wave in III, and T-wave inversion in III
What are delta waves on EKG?
Delta waves seen in WPW = upslope btwn P and QRS complex b/c of the aberrant pathway btwn atria and ventricles that starts ventricular contraction earlier
What EKG finding may contraindicate zofran?
Prolonged QT- don’t give reglan or zofran
-if pt puking and can’t give either, can give ativan
