Long-term (BP 140/90 or more: start with a 2-drug single pill; never two RAAS blockers): Telmisartan + Amlodipine, Telmisartan + Chlorthalidone, Amlodipine (single drug: low-risk grade 1, over 80 y or frail), Telmisartan, Chlorthalidone, Indapamide SR, Spironolactone (resistant: not controlled on 3 drugs), Metoprolol succinate (angina / heart failure / AF)
Severe BP (180/120 or more) without organ damage — oral drugs, lower over 24–48 h; no IV drugs, no sublingual nifedipine; review within 1 wk: Amlodipine, Labetalol, Captopril
Emergency (organ damage, ICU) — no more than 25% fall in the first hour, then 160/100 by 2–6 h, then 130–140 systolic over 24–48 h (aortic dissection: below 120 in the first hour): Labetalol IV, Nitroglycerin IV
Investigations
First visit
Blood glucose (fasting) or HbA1c — Diabetes screen.
Serum creatinine (eGFR) and potassium — Baseline, before ACE inhibitor/ARB or diuretic.
Urine routine and urine albumin–creatinine ratio — Kidney damage.
Lipid profile — Cardiovascular risk.
ECG — Left ventricular hypertrophy, old MI.
Only if indicated
Echocardiography — ECG changes, breathlessness or a murmur.
Fundoscopy — Severe hypertension, headache or visual symptoms.
ICU Decoded — original critical-care and internal-medicine pathways by
Dr Javed Akhtar, each cited to a current guideline. For education and quick
reference; verify every dose against local protocols before prescribing.