What are therapeutic indications, pharmacokinetics and contraindications of sodium nitroprusside?

Therapeutic (acute HTA crisis, acute decompensated HF, induction of periop Hypotension) Pharmacokinetics (Admin IV, onset w/in 30 s, peak in 2 min, 3 min effect disappears) Contraindication (impaired renal/kidney function leads to cyanate toxicity leading to cyanide poisoning symptoms