Norepinephrine: Difference between revisions
Elcatracho (talk | contribs) |
Elcatracho (talk | contribs) |
||
| Line 37: | Line 37: | ||
==Adverse Reactions== | ==Adverse Reactions== | ||
*If extravasation occurs use phentolamine 0.1 to 0.2mg/kg (maximum dose 10mg) subcutaneous in affected site<ref>ZUCKER G. et al. Treatment of shock and prevention of ischemic necrosis with levarterenol-phentolamine mixtures. Circulation. 1960 Nov;22:935-7.</ref><ref>PELNER L. et al. The problem of levarterenol (norepinephrine) extravasation an experimental study.. Am J Med Sci. 1958 Dec;236(6):755-66</ref> | *If extravasation occurs use [[phentolamine]] 0.1 to 0.2mg/kg (maximum dose 10mg) subcutaneous in affected site<ref>ZUCKER G. et al. Treatment of shock and prevention of ischemic necrosis with levarterenol-phentolamine mixtures. Circulation. 1960 Nov;22:935-7.</ref><ref>PELNER L. et al. The problem of levarterenol (norepinephrine) extravasation an experimental study.. Am J Med Sci. 1958 Dec;236(6):755-66</ref> | ||
**Consult plastic/general surgery service to follow the patient and eval for need for intervention | **Consult plastic/general surgery service to follow the patient and eval for need for intervention | ||
Revision as of 10:35, 4 January 2022
General
- Type: Vasopressors
- Dosage Forms:
- Common Trade Names: Levophed
Adult Dosing
Dosing
- Usual Adult Dose for Hypotension. Initial dose: 2 to 4 mcg/min with titration to 25 mcg/min
Based on Glomerular Filtration Rate [GFR (ml/min)]
- <10: 0.2mcg/kg/min
- 10-40: 0.3mcg/kg/min
- >40-50: 0.4mcg/kg/min
- For CVVHD: dose at 0.4mcg/kg/min
- For HD: dose 0.2mcg/kg/min
Rate of Titration
- Q2-5 min
Pediatric Dosing
- Hypotension/Shock
- IV Infusion: Initiate at 0.05-0.1mcg/kg/min, titrate to effect, usual max dose 2mcg/kg/min
Special Populations
- Pregnancy Rating: C
- Lactation: Unknown if excreted in breast milk
- Renal Dosing
- Adult
- Pediatric
- Hepatic Dosing
- Adult
- Pediatric
Contraindications
- Allergy to class/drug
Adverse Reactions
- If extravasation occurs use phentolamine 0.1 to 0.2mg/kg (maximum dose 10mg) subcutaneous in affected site[1][2]
- Consult plastic/general surgery service to follow the patient and eval for need for intervention
- Cardiovascular: Bradycardia, Arrhythmia, Cardiomyopathy
- CNS Anxiety, Headache
- Respiratory: Dyspnea
Pharmacology
- Half-life: Effects for 1-2min
- Metabolism: In the blood via COMT and MAO
- Excretion: Renal
- Mechanism of Action:
Primary Receptor
- α1 >> β1
Relative Effects
- ↑↑↑SVR
- ↑HR
- ↑SV
Notes
More potent vasoconstrictor than dopamine and phenylephrine.
Indication
- Septic shock (1st line)
- Cardiogenic shock:
- If marked hypotension (SBP <70)
- If used with dobutamine