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===[[Vasopressors]]===
===[[Vasopressors]]===
{| class="wikitable"
{| class="wikitable"f
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! Pressor!! Initial Dose !! Max Dose !! Cardiac Effect  !! BP Effect !! [[Arrhythmias]] !! Special Notes
! Pressor!! Initial Dose !! Max Dose !! Cardiac Effect  !! BP Effect !! [[Arrhythmias]] !! Special Notes
|-
|-
| [[Dobutamine]] || 3-5 mcg/kg/min || 5-15 mcg/kg/min (as high as 200) <ref>https://www.ncbi.nlm.nih.gov/pubmed/8449087 </ref> || Strong ß1 agonist +inotrope +chronotrope, Weak ß2 agonist +weak vasodilatation ) || alpha effect minimal || HR variable effects <ref> </ref>. Also Increase SA and AV node fx || indicated in decompensated systolic HF, Debut Research 1979<ref>Edmund H. Sonnenblick, M.D., William H. Frishman, M.D., and Thierry H. LeJemtel, M.D. Dobutamine: A New Synthetic Cardioactive Sympathetic Amine</ref> Isoproterenol has most Β2 vasodilatory and Β1 HR effects
| [[Dobutamine]] || 3-5 mcg/kg/min || 5-15 mcg/kg/min (as high as 200) <ref>https://www.ncbi.nlm.nih.gov/pubmed/8449087 </ref> || Strong ß1 agonist +inotrope +chronotrope, Weak ß2 agonist +weak vasodilatation ) || alpha effect minimal || HR variable effects.|| indicated in decompensated systolic HF, Debut Research 1979<ref>Edmund H. Sonnenblick, M.D., William H. Frishman, M.D., and Thierry H. LeJemtel, M.D. Dobutamine: A New Synthetic Cardioactive Sympathetic Amine</ref> Isoproterenol has most Β2 vasodilatory and Β1 HR effects
|-
|-
| [[Dopamine]] || 2 mcg/kg/min || 20-50 mcg/kg/min || β1 and NorEpi release || α effects if > 20mcg/kg/min || Arrhythmogenic from β1 effects || More adverse events when used in shock compared to Norepi<ref name="soap2">De Backer Daniel et al. Comparison of Dopamine and Norepinephrine in the Treatment of Shock. NEJM 363(9). 779-789</ref>
| [[Dopamine]] || 2 mcg/kg/min || 20-50 mcg/kg/min || β1 and NorEpi release || α effects if > 20mcg/kg/min || Arrhythmogenic from β1 effects || More adverse events when used in shock compared to Norepi<ref name="soap2">De Backer Daniel et al. Comparison of Dopamine and Norepinephrine in the Treatment of Shock. NEJM 363(9). 779-789</ref>

Revisión actual - 22:48 7 dic 2022

Vasopressors

Pressor Initial Dose Max Dose Cardiac Effect BP Effect Arrhythmias Special Notes
Dobutamine 3-5 mcg/kg/min 5-15 mcg/kg/min (as high as 200) [1] Strong ß1 agonist +inotrope +chronotrope, Weak ß2 agonist +weak vasodilatation ) alpha effect minimal HR variable effects. indicated in decompensated systolic HF, Debut Research 1979[2] Isoproterenol has most Β2 vasodilatory and Β1 HR effects
Dopamine 2 mcg/kg/min 20-50 mcg/kg/min β1 and NorEpi release α effects if > 20mcg/kg/min Arrhythmogenic from β1 effects More adverse events when used in shock compared to Norepi[3]
Epinepherine 0.1-1 mcg/kg/min + inotropy, + chronotropy
Norepinephrine 0.2 mcg/kg/min 0.2-1.3 mcg/kg/min (5mcg/kg/min) [4] mild β1 direct effect β1 and strong α1,2 effects Less arrhythmias than Dopamine[3] First line for sepsis. Increases MAP with vasoconstriction, increases coronary perfusion pressure, little β2 effects.
Milrinone 50 mcg/kg x 10 min 0.375-75 mcg/kg/min Direct influx of Ca2+ channels Smooth muscle vasodilator PDE Inhibitor which increases Ca2+ uptake by sarcolemma. No venodilatory activity
Phenylephrine 100-180 mcg/min then 40-60 mcg/min 0.4-9 mcg/kg/min Alpha agonist Long half life
Vasopressin Fixed Dose 0.01 to 0.04 U/min unknown increases via ADH peptide should not be titrated due to ischemic effects
Methylene blue[5] IV bolus 2 mg/kg over 15 min 1-2 mg/kg/hour Possible increased inotropy, cardiac use of ATP Inhibits NO mediated peripheral vasodilation Don't use in G6PD deficiency, ARDS, pulmonary hypertension
Medication IV Dose (mcg/kg/min) Concentration
Norepinephrine (Levophed) 0.1-2 mcg/kg/min 8mg in 500mL D5W
Dopamine 2-20 mcg/kg/min 400mg in 250 D5W
Dobutamine 2-20 mcg/kg/min 250mg in 250 mg D5W
Epinephrine 0.1-1 mcg/kg/min 1mg in 250 D5W
  1. ↑ https://www.ncbi.nlm.nih.gov/pubmed/8449087
  2. ↑ Edmund H. Sonnenblick, M.D., William H. Frishman, M.D., and Thierry H. LeJemtel, M.D. Dobutamine: A New Synthetic Cardioactive Sympathetic Amine
  3. ↑ 3.0 3.1 De Backer Daniel et al. Comparison of Dopamine and Norepinephrine in the Treatment of Shock. NEJM 363(9). 779-789
  4. ↑ https://www.ncbi.nlm.nih.gov/pubmed/15542956
  5. ↑ Pasin L et al. Methylene blue as a vasopressor: a meta-analysis of randomised trials. Crit Care Resusc. 2013 Mar;15(1):42-8.
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