There is always confusion around the terms third-degree heart block and AV dissociation. Dr. Chou makes a clear distinction in his book (see Additional Readings section): “The term complete AV block is used when the atrial rate is faster than the ventricular rate, whereas the reverse is true in AV dissociation. In AV block, there is a failure of impulse conduction even though the ventricles are receptive. In AV dissociation, there is an increase in the automaticity of the subsidiary pacemaker, which renders the ventricles functionally refractory to the slower atrial impulses.” These are the definitions we have used in this book.
Look at V1, which is usually the best place to see P waves
Myoglobin levels rise within 1-4 h fr onset of chest pain!!!! The earliest!!
Dont give nitrates in RV INFARCT , SHOCK, AORTIC STENOSIS, HYPOTENSION, CARDIOGENIC SHOCK
In 1st dgree heart block there is ONLY PROLONGATION OF PR BUT IN
2nd degree ( mobitz type 1) there is PROGRESSIVE PROLONGATION OF PR.
MOBITZ TYPE II –> there is constant PR BT OCCASIONALLY, THERE IS WITHOUT A QRS!!!
PLLLLLLLZZZZZZ INGAT SYG OIIIIIII
The triad of right vt infarction( hypotension, jugular venous distension, clear lung fields)