Quote from silverhalide
What about the pulse pressure with an MI? would it be narrow or wide?
More than likely narrow. The most common cause of a narrow pulse pressure is a drop in left ventricular stroke volume. Other causes include hypovolemia, shock, cardiac tamponade and aortic valve stenosis.
I also wanted to chime in regarding vital signs changes during an MI...it depends on where the MI is located and how extensive the damage is.
* Anterior MI (LAD) - tachycardia, SA blocks, pulmonary edema
* Inferior MI (RCA) - bradycardia, hypotension. They may also present with N&V and hiccups instead of chest pain. Anytime you have an inferior MI, do a right-sided EKG to check for RV involvement.
* Lateral (LCA, LCX) - ventricular dysrhythmias
* Septal (LAD, RCA) - tachycardia, atrial fibrillation
* Posterior (LCA, LCX, RCA) - bradycardia, junctional rhythms
* RV infarct - suspected with inferior MI, which is why if a patient presents with an inferior MI they need to have a right-sided EKG completed. Look for changes in V4R. The incidence of RV involvement is 40% with inferior wall MIs. You'll see hypotension, JVD and lungs CTA in a true RVMI.