CV Disorders 2 - CHB, IVC, RV dysfunction, HOCM shock Flashcards
Prognosis is worse for complete heart block associated w/ inferior or anterior MI?
Anterior
2 reasons why CHB-associated anterior MI is worse than inferior
Greater extent of damaged myocardium; damage is distal to His bundle
To call elevated RA pressure, the IVC must be _____ AND _____.
> 2.1 cm; collapse <50%
IVC diameter/collapse should not be used to estimate RA pressure in _____ patients.
mechanically ventilated
What is the Kussmaul sign?
Inspiratory rise in JVP
What does Kussmaul sign suggest?
impaired RV filling
3 conditions associated w/ Kussmaul sign
RV infarction, tamponade, constrictive pericarditis
Fluid bolus is _____ in shock due to RVMI.
ineffective
drug for torsades de pointes
Mag sulfate
2 mainstays to Tx shock from HOCM
fluids and phenylephrine