Phenylephrine Hcl Injection

Prolongation of spinal anesthesia: add 2–5mg into anesthetic solution. Vasoconstrictor for regional analgesia: add 1mg to every 20mL (1:20,000) of local anesthetic solution.

Give by rapid IV inj within 20–30secs. Initial max dose: 0.5mg, subsequent doses not to exceed preceding dose by 0.1–0.2mg; max: 1mg.

Spinal anesthesia hypotension: treatment or prophylaxis: 2–3mg SC or IM 3–4 minutes prior to spinal anesthesia; hypotensive crisis: initially 0.2mg by IV inj, subsequent doses not to exceed preceding dose by 0.1–0.2mg; max: 0.5mg/dose. Mild or moderate hypotension: SC or IM: usually 2–5mg; initial max dose: 5mg. Range: 1–10mg; IV: usually 0.2mg; initial max dose: 0.5mg. Range: 0.1–0.5mg. Do not repeat injections more often than every 10–15mins. Shock and drug-induced: initially 10mg by continuous IV infusion, if non-responsive, add additional 10mg (or more) into infusion bottle. See literature.