Nitro Class Vasodilator Nitro MOA Smooth muscle relaxation Decrease Pre/After load and myocardial O2 demand Nitro Indications C/P CHF HTN Crisis PE Angina Nitro Contraindications ED within 24hrs Hypotension Hypovolemia Head Injury Nitro Adverse Reactions Headache Nausea Syncope Diaphoresis Hypotension Tachy Nitro Dosage Adult: 0.4 SL HTN Crisis 1.6 SL