Cardiac Drugs 2 Flashcards
(102 cards)
Sodium Bicarbonate Class
Systemic hydrogen ion buffer, alkalizing agent
Sodium Bicarbonate Mechanism of Action
Buffers metabolic acidosis and lactic acid buildup in the body caused by anaerobic metabolism secondary to severe hypoxia by reacting with hydrogen ions to form water and carbon dioxide.
Sodium Bicarbonate Indications
Metabolic acidosis during cardiac arrest, trycyclic antidepressant, aspirin, and PHENobarbital overdose, hyperkalemia, crush injuries.
Sodium Bicarbonate Contraindications
Metabolic and respiratory alkalosis, hypokalemia, electrolyte imbalance due to severe vomiting or diarrhea.
Sodium Bicarbonate Adverse reactions/side effects
Hypernatremia, metabolic alkalosis, tissue sloughing, cellulitis, mecrosis at injection site, seizures, fluid retention, hypokalemia, electrolyte imbalance, tetany, sodium retention, peripheral edema.
Sodium Bicarbonate Drug interactions
increases the effects of amphetamines. Decreases the effects of benzodiazapines, tricyclic antidepressants. May deactivate sympathomimetics(DOPamine, EPINEPHrine, norepinephrine)
Sodium Bicarbonate Adult Dosage and administration
1 mEq/kg slow IV, IO push, may repeat at 0.5 mEQ/kg every 10 minutes.
Sodium Bicarbonate Pediatric Dosage and administration
1 mEq/kg slow IV, IO push(dilute in small children to 4.2%)
Sodium Bicarbonate Duration of Action
onset: seconds
peak effect: 1 to 2 minutes
duration: 10 minutes
Sodium Bicarbonate Pregnancy safety category
C
Sodium Bicarbonate Special Considerations
Repeat as needed in tricyclic antidepressant overdose until QRS narrows. Must be used in conjuction with effective ventilation and chest compressions in cardiac arrest. Avoid contact with other medications; may precipitate or inactivate them. Always flush IV line well before and after injecting. Use with caution in patients with heart failure and renal disease due to high sodium concentration. Monitor patient closely for signs and symptoms of fluid overload.
Furosemide (Lasix) class
loob diuretic
Furosemide (Lasix) Mechanism of Action
Blocks the absorption of sodium and chloride at the distal and proximal tubules and the loop of Henle, causing increased urine output
Furosemide (Lasix) Indications.
Heart failure, pulmonary edema, hypertensive crisis.
Furosemide (Lasix) Contraindications
hypovolemia, anuria, hypotension(relative contraindication), hypersensitivity, hepatic coma, suspected electrolyte imbalances.
Furosemide (Lasix) Adverse reactions/ side effects
Dizziness, headache, ECG changes, weakness, orthostatic hypotension, dysrhythmias, nausea, vomiting, diarrhea, dry mouth, may exacerbate hypovolemia and hypokalemia, hyperglycemia(due to hemoconcentration)
Furosemide (Lasix) Drug interactions
Lithium toxicity may be potentiated because of sodium depletion. Digitalis toxicity may be potentiated by potassium depletion.
Furosemide (Lasix) Adult Dosage and administration
0.5 to 1mg/kg IV over 1 to 2 minutes. If no response, double the dose to 2 mg/kg slowly over 1 to 2 minutes.
Furosemide (Lasix) Pediatric Dosage and Administration
1 mg/kg IV/IO
Furosemide (Lasix) Duration of action
onset: 5 minutes.
peak: 20-60 mins.
duration 4 to 6 hours.
Furosemide (Lasix) Pregnancy safety
C
Furosemide (Lasix) special considerations.
Should only be used during pregnancy if maternal benefit outweighs fetal risk. Ototoxicity, deafness and projectile vomiting can occur with rapid administration. Should be protected from light. Vasodilatory effects within 5 minutes; diuretic effects within 30 minutes. Expect 10 to 12 minutes. Expect to 10 12 mm Hg systolic and a 5 to 7 mm Hg diastolic drop in BP. Being phased out due to nephrotoxic side effects. Furosemide administration has decreased with the advent of CPAP.
Labetalol (Normodyne, Trandate) Class
Selective alpha and nonselective beta adrenergic blocker, antihypertensive
Labetalol (Normodyne, Trandate) Mechanism of action
BP reduction without reflex tachycardia; total peripheral resistance reduced without significant alteration in cardiac output