DIGOXIN - CARDIAC GLYCOSIDES ( BASICS ) HELPS,THE HEART TO PUMP MORE EFFICIENTLY, INHIBITS NORMAL FUNCTION OF Na+/K+ PUMP. HOW DOES IT AFFECTS THE HEART[ POSITIVE AND NEGATIVE EFFECTS] POSITIVE: INOTROPIC EFFECT ON THE HEART: SQEEZES/CONTRACTS HARDER. NEGATIVE: CHRONOTROPIC EFFECT ON THE HEART: BEATS SLOWER. NEGATIVE: DROMOTROPIC EFFECT ON THE HEART; SLOWS IMPULSES SENT THROUGH AV NODE RESULTS; HEART SQEEZES MORE BLOOD OUT = INCREASED STROKE VOLUME = INCREASED CARDIAC OUTPUT DRUG USED FOR: HEART FAILURE, CARDIOGENIC SHOCK, A.FIB, A.FLUTTER. EFFECT ON ECG: THE ADMINISTRATION OF DIGOXIN CAUSES (T-WAVE) INVERSION - CHARACTERISTICALLY WITH SLOPING DEPRESSION OF THE ST SEGMENT. IT IS HELPFUL TO RECORD AN ECG BEFORE GIVING DIGOXIN, TO SAVE LATER CONFUSION ABOUT THE SIGNIFICANCE OF T-WAVE CHANGES. THERAPEUTIC: 0.5 - 2 ng/ml (ANYTHING GREATER THAN 2ng IT'S CONSIDER TOXI...
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