cardio Flashcards
P wave is positive in what leads
I, II, aVF, V4-V6
PR interval
0.12-0.20sec
QRS complex
0.06-0.12s
T wave is positive in leads
I, II, V5, V6
ST elevation
Injury; restricted blood flow
Depressed ST
ischemia, not totally restricted bloodflow
Flat T wave
Ischemia
Biphasic T waves
Ischemia, electrolyte imbalance
QT interval
0.40-0.50sec
Total time if ventricular depolarization and repolarization
Dopamine (sympathomimetic)
For low CO, hypotension with s&s of shock, low urine output, systematic bradycardia
Dobutamine (sympathomimetic)
Increased CO by increasing contractility, used in diagnostic stress test (DipMib)
Can be used in ES-CHF (low dose)
Epinephrine
1st line drug for cardiac arrest Symptomatic bradycardia Severe hypotension Shock Severe anaphylactic reaction
Vasopressin (AD hormone)
Severe hypotension
Acute esophageal & upper GI Bleed
Diabetes insipidus
Phenylephrine
Correction of hypotension during spinal anesthesia, drug induced hypotension, post anesthesia, shock, used to wake pt up after propofol
Milrinone (positive inotrope & vasodilator
Short term treatment for CHF
post OHS
Nitroprusside
Hypertensive crisis, control bp for dissecting aneurysm, reduceds afterload and preload in cardiac pump failure and mitral regurg
Nitroglycerin (vasodilator)
Angina Myocardial ischemoa HTN CHF acute pulmonary edema
Amiodarone
Suppression of ventricular arrhythmias, treatment of atrial arrhythmias with rapid ventricular response, SVT, WPW
Procainamide
2nd line drug for symptomatic or life threatening ventricular arrhythmias
Lidocaine
Suppresses ventricular arrhythmias
Adenosine
Termination of SVT
Magnesium
Torsades des pointes
Atropine
Symptomatic bradycardia, 1st and second degree HB
