Group 2 Flashcards
Amyl Nitrite
Class
Antidote, cyanide poisoning adjunct, nitrate.
Amyl Nitrite
Mechanism of Action
Converts hemoglobin to methemoglobin, which reacts with cyanide and chemically binds with it, preventing any toxic effects.
Amyl Nitrite
Indications
Cyanide poisoning
Amyl Nitrite
Contraindications
none in emergency setting
Amyl Nitrite
Adverse reactions/side effects
- Headache, dizziness, weakness, increased ICP, shortness of breath, orthostatic hypotension, tachycardia, syncope.
- Cyanosis of the lips, fingernails, or palms (signs of methemoglobinemia)
Amyl Nitrite
Drug Interactions
Increased hypotensive effects with antihypertensives, alcohol ingestion, phenothiazines, or beta-blockers
Amyl Nitrite
Dosage and administration
- Adult: 1 to 2 ampules crushed and inhaled for 30 seconds of each minute until sodium nitrite is prepared or administer for 30 to 60 seconds every 5 minutes until patient is conscious.
- Pediatric: 1 ampule crushed and inhaled for 30 seconds of each minute until sodium nitrite is prepared or for 30 to 60 seconds of each minute until sodium nitrite is prepared or administer for 30 to 60 seconds every 5 minutes until patient is conscious.
Amyl Nitrite
Duration of Action
- Oset: 30 seconds to 5 minutes
- Peak effect: Varies
- Duration 5 to 10 minutes
Amyl nitrite
Special Considerations
-Pregnancy safety: Category X
-May cause fetal harm by reducing maternal BP and
decreasing placental blood supply.
-Highly Flammable: Avoid exposure heat or flame.
-Patient should remain seated or supine during and after administration due to hypotension.
-This is the first step in a three-step treatment for cyanide poisoning followed by sodium nitrite and then sodium thiosulfate.
Aspirin (acetylsalicylic Acid [ASA])
Class
Platelet inhibitor, anti-inflammatory agent
Aspirin (acetylsalicylic Acid [ASA])
Mechanism of Action
-Prevents the formation of thromboxane A2, which causes platelets to clump together (aggregate) and form plugs that cause obstruction or constriction; has antipyretic and analgesic properties
Aspirin (acetylsalicylic Acid [ASA])
indications
-New onset chest discomfort suggestive of ACS
Aspirin (acetylsalicylic Acid [ASA])
Contraindications
Hypersensitivity
-Relatively contraindicated in patients with active ulcer disease or asthma.
Aspirin (acetylsalicylic Acid [ASA])
Adverse reactions/side effects
Bronchospasm, anaphylaxis, wheezing in allergic patients, prolonged bleeding, GI bleeding, epigastric distress, nausea, vomiting, heartburn, Reye syndrome.
Aspirin (acetylsalicylic Acid [ASA])
Drug interactions
Use with caution on patients allergic to NSAIDs
Aspirin (acetylsalicylic Acid [ASA])
Dosage and administration
- Adult: 160 mg to 325 mg PO. Chewed
- Pediatric: Not recommended
Aspirin (acetylsalicylic Acid [ASA])
Duration of action
- Onset: 5 to 30 minutes
- Peak effect: 1 to 3 hours
- Duration 3 to 6 hours
Aspirin (acetylsalicylic Acid [ASA])
Special Considerations
Pregnancy safety: Category D
- Use cautiously during pregnancy, weighing risks and benefits. If there are no contraindications, non-enteric- coated, chewable aspirin should be given as soon as possible to all patients with a suspected ACS as soon as possible after symptom onset.
Vasopressin (Pitressin)
Class
Vasopressor
Vasopressin (Pitressin)
Mechanism of Action
Stimulation of smooth muscle receptors; potent vasoconstrictor when given in high doses.
Vasopressin (Pitressin)
indications
Vasodilatory shock
Vasopressin (Pitressin)
Contraindications
Use with caution in patients with:
- CAD
- Epilepsy
- Heart failure
Vasopressin (Pitressin)
Adverse reactions/side effects
Dizziness, headache, bronchial constriction, MI, Chest pain, angina, cardiac dysrhythmia, decreased cardiac output, abdominal cramps, diarrhea, nausea, vomiting , paleness, sweating.
Vasopressin (Pitressin)
Drug Interactions
None Reported
Vasopressin (Pitressin)
Dosage and administration
- Adult: 0.02 to 0.07 unit/min IV infusion
- Pediatric: Safety and efficacy not established
Vasopressin (Pitressin)
Duration of action
- Onset: Unknown
- Peak effect: Unknown
- Duration: 30 to 60 minutes
Vasopressin (Pitressin)
Special Considerations
- Pregnancy Safety: Category C
- Use caution during pregnancy. Breastfeeding women should pump and discard breast milk for 1.5 hours after drug administration.
- May increase peripheral Vascular resistance and provoke cardiac ischemia and angina.
Nalbuphine Hydrochloride (Nubain)
Class
Synthetic opioid Agonist/antagonist
Nalbuphine Hydrochloride (Nubain)
Mechanism of action
- Activates opiate receptor in limbic system of the CNS.
- Analgesic, similar to morphine on a milligram-for-milligram basis
- Both agonist and antagonist properties
- Preferred for chest pain in setting of acute MI because it reduces the myocardial oxygen demand without reducing the BP.
Nalbuphine Hydrochloride (Nubain)
Indications
Chest pain associated with AMI moderate to severe acute pain.
Nalbuphine Hydrochloride (Nubain)
Contraindications
- Head Injury
- Undiagnosed abdominal pain, diarrhea caused by poison.
- Hypovolemia, hypotension
Nalbuphine Hydrochloride (Nubain)
Adverse reactions/side effects
Headache, dizziness, vertigo, seizure
- CNS depression, paradoxical CNS stimulation, respiratory depression, pulmonary edema.
- Hypotension, hypertension, palpitations, bradycardia, nausea, vomiting, dry mouth.
Nalbuphine Hydrochloride (Nubain)
Drug Interactions
CNS depressants may potentiate effects
Nalbuphine Hydrochloride (Nubain)
Dosage and Administration
- Adult: 2 to 5mg slowly IV. May repeat doses PRN to a maximum dose of 10mg
- Pediatric: NOT RECOMENDED
Nalbuphine Hydrochloride (Nabain)
Duration of action
- Onset: 2 to 3minutes
- Peak Effect: Variable
- Duration: 3 to 6 hours
Nalbuphine Hydrochloride (Nabain)
Special Considerations
- Pregnancy Safety: Category B
- Use with caution in patients with impaired respiratory function,
- May precipitate withdrawal syndromes in narcotic-dependent patients.
- Naloxone should be readily available
Norepinephrine Bitartrate (Levophed)
Class
- Sympathomimetic
- Vasopressor
Norepinephrine Bitartrate (Levophed)
Mechanism Of Action
- Potent alpha-agonist resulting in intense peripheral vasoconstriction
- Positive chronotropic and increased cardiac effect (from 10% beta effect) with increased cardiac output.
- Alpha-adrenergic activity resulting in peripheral vasoconstriction and beta-adrenergic activity leading to inotropic stimulation of the heart and coronary artery vasodilation.