Step 1: Immediate assessment (before any drug is given)

• Neuro: headache, confusion, seizures, focal deficits, vision changes → encephalopathy, stroke, ICH
• Cardiac: chest pain, dyspnea → ACS, acute pulmonary edema, aortic dissection (tearing back pain + pulse/BP asymmetry)
• Renal: rising creatinine, hematuria, oliguria → acute kidney injury
• Eyes: fundoscopy for papilledema, hemorrhages, exudates
• Basic workup: ECG, chest X-ray, CBC, creatinine/BUN, urinalysis, troponin if chest pain, CT head if neuro signs

Step 2: If this IS a hypertensive emergency (TOD present)

• Admit to ICU, continuous BP monitoring, arterial line, IV antihypertensives (not oral)
• General BP goal (no dissection, no stroke): reduce mean arterial pressure by 20-25% in the first hour, then to ~160/100-110 mmHg over the next 2-6 hours, then gradually to normal over 24-48 hours. Rapid over-correction risks cerebral/coronary/renal hypoperfusion, especially in a 70-year-old with likely impaired autoregulation from chronic hypertension.
• Drug choice by scenario:
  • Aortic dissection: labetalol or esmolol + nitroprusside/nicardipine; target SBP <120 within 20 min, HR <60
  • Acute pulmonary edema/heart failure: IV nitroglycerin or nitroprusside + loop diuretic; avoid labetalol/beta-blockers
  • Acute coronary syndrome: nitroglycerin, labetalol/esmolol
  • Ischemic stroke: only treat if >220/120 (or lower if giving thrombolysis, target <185/110 pre-tPA); labetalol or nicardipine
  • Intracranial hemorrhage: nicardipine or labetalol, gradual lowering, avoid over-shooting (maintain cerebral perfusion)
  • Hypertensive encephalopathy: nicardipine or labetalol, 20-25% MAP reduction over 1 hour
  • Acute kidney injury: fenoldopam or nicardipine, avoid ACEi/ARB acutely
• First-line IV agents commonly used: labetalol, nicardipine, nitroprusside, esmolol, nitroglycerin (choice tailored to the organ affected and comorbidities).

Step 3: If this is hypertensive urgency (no TOD)

• Rosen's Emergency Medicine and Tintinalli's are explicit: do not attempt rapid BP normalization. Gradual reduction with oral agents over 24-48 hours; can often be managed outpatient with close follow-up if reliable, or observed briefly in ED.
• IV drugs and aggressive drops are avoided - they increase risk of stroke/MI from sudden hypoperfusion, particularly relevant at age 70 where cerebral/coronary autoregulation is often shifted upward from years of chronic hypertension.
• Restart/optimize home antihypertensives, address triggers (medication non-adherence is a leading cause - noted in Comprehensive Clinical Nephrology as present in a large proportion of hypertensive emergency patients), arrange follow-up within days.

Geriatric-specific considerations at age 70

• Greater risk of over-aggressive lowering causing ischemic stroke, cardiac ischemia, or falls
• Check for polypharmacy, renal function, volume status (elderly patients are often relatively volume-depleted)
• Screen for secondary/contributing causes: renal artery stenosis, medication non-adherence, NSAID or decongestant use, pain/anxiety as a trigger

Bottom line

First Aid (what to do right now, before/while arranging transport)

1. Call emergency services (ambulance) immediately - especially if she has any of: headache, confusion, weakness/numbness, slurred speech, chest pain, breathlessness, blurred vision, or seizure. These indicate a hypertensive emergency with organ damage, not just a high reading.
2. Keep her calm, seated or semi-reclined (30-45°), in a quiet environment - anxiety and pain can further raise BP.
3. Loosen tight clothing, ensure a calm, well-ventilated space.
4. Do not give her a stimulant (tea, coffee, smoking).
5. If she takes regular antihypertensive medication and has simply missed a dose, giving her the next scheduled oral dose is reasonable (non-adherence is one of the most common triggers of hypertensive crisis) - but do not give an extra/double dose or a new drug she isn't already on, and do not try to "crash" the pressure.
6. Recheck the BP after a few minutes of rest in both arms if possible - a single very high reading taken in distress/pain can be falsely elevated; a genuine crisis reading will persist.
7. Note and relay to responders: exact BP readings and time taken, any chest pain/breathlessness/neuro symptoms, her regular medications (especially if she missed doses), and any known history of kidney disease, stroke, heart disease, or pregnancy-related hypertension (not relevant at 70 but useful for the receiving team's history-taking).
8. Do NOT give sublingual nifedipine or any rapid-acting antihypertensive - this old practice is now contraindicated because it can cause precipitous, uncontrolled BP drops leading to stroke/MI, a point specifically warned against in emergency medicine references (Rosen's, Tintinalli's).
9. If she becomes unresponsive or stops breathing normally, begin standard first aid/CPR protocol and continue until help arrives.

Referral

• Refer immediately to the nearest emergency department / hospital with ICU capability if there is any symptom suggesting organ damage (this is a true hypertensive emergency): admission for IV antihypertensive therapy and monitoring is required, per ACC/AHA and ESC guidelines.
• If she is completely asymptomatic (no headache, chest pain, dyspnea, visual or neuro symptoms) - this is hypertensive urgency. She should still be seen the same day (ED or urgent primary care/physician visit) for evaluation, but the emphasis on-site will be gradual oral BP control rather than IV drugs, and she can often be managed without hospital admission once ruled out for organ damage. As Brenner and Rector's The Kidney textbook notes, "the most important aspect of managing a hypertensive urgency is to refer the patient to a good source of ongoing care for hypertension" for adherence and follow-up.
• Either way, do not just send her home without medical evaluation at this BP level - the workup (ECG, chest X-ray, renal function, urinalysis, fundoscopy, and CT head if any neuro signs) needs to be done in a facility, not at the point of first aid.

Dosing (confirmed across sources)

• Standard initial IV bolus: 20 mg over 2 minutes (Tintinalli's, StatPearls, Medscape, LHSC protocol all agree on this).
• If BP response is inadequate, repeat with 40-80 mg every 10 minutes, up to a cumulative maximum of 300 mg.
• Alternative: after the initial bolus, switch to a continuous infusion at 0.5-2 mg/min, titrated to BP.
• Onset is fast (2-5 min), peak effect ~5 min, duration 2-4 hours - so reassess BP every 5-10 minutes after the dose.

Before you push it, confirm these (ECG being normal only clears one box)

• Asthma / significant COPD (nonselective beta-blockade can precipitate bronchospasm) - ask about wheeze/inhaler use
• Decompensated heart failure or acute pulmonary edema - listen for crackles, check for orthopnea/dyspnea; if she's in heart failure, labetalol's inotropic/beta-blocking effect is contraindicated and nitroglycerin + a loop diuretic is preferred instead
• Cardiogenic shock or severe bradycardia (HR should be reasonable, not markedly low, before dosing)
• Known hypersensitivity to labetalol

After giving it

• Recheck BP and HR at 5-10 minutes.
• If BP still not adequately controlled, give the next dose (40-80 mg) at the 10-minute mark rather than waiting longer.
• Keep her on continuous or frequent BP/HR monitoring - ideally this is happening in an ED/monitored setting, not truly "at home," given the degree of BP elevation (260/130) even with a benign ECG. Watch for hypotension, bradycardia, and bronchospasm as the main adverse effects to monitor for.
• Continue looking for other signs of end-organ damage (neuro exam, renal function, fundoscopy, symptoms of chest pain/dyspnea) since ECG normal doesn't exclude AKI, hypertensive encephalopathy, or retinal damage - the presence or absence of these still determines her disposition (ICU vs. gradual outpatient-oriented management), as discussed before.