Name: Elevated blood pressure — bulletproof documentation — ER Toolkit
Creator: Kim Trinh, MD

The whole case turns on one distinction: is there acute target-organ damage (a hypertensive emergency) or not (asymptomatic severe hypertension)? It's the rate of change, not the number, that harms — and the asymptomatic patient does not need acute ED blood-pressure lowering. The defensible chart documents the organ screen and the rationale either way.

01What's at stake

Overdiagnosing a hypertensive emergency leads to needless admissions and the real harm of parenteral over-treatment — and over-lowering is as dangerous as not treating, because chronically hypertensive patients auto-regulate and a "normal" pressure can cause hypoperfusion. Conversely, missing genuine target-organ damage (dissection, stroke, pulmonary edema, preeclampsia) is catastrophic. The screen is the chart.

02Can't-miss target-organ damage

Hypertensive emergency — acute, evolving end-organ damage: encephalopathy, ischemic/hemorrhagic stroke, SAH, acute heart failure/flash pulmonary edema, ACS, aortic dissection, AKI. → organ screen
Preeclampsia/eclampsia — pregnant or postpartum with headache, visual symptoms, or SBP ≥160/DBP ≥110 → magnesium and treat. → ask about pregnancy
Asymptomatic severe HTN (≥180/110 without organ damage) — no acute ED lowering; outpatient follow-up. → no IV treatment

03The screen (BARKH) & recheck

Brain — headache, vision change, confusion, seizure, focal deficit (encephalopathy, stroke, SAH).
Arteries — tearing chest/back pain, pulse/BP differential, new murmur (aortic dissection).
Retina/Renal — fundoscopic changes; oliguria, creatinine, UA.
Kidney/Heart — chest pain/dyspnea/edema → ECG, troponin, chest imaging (ACS, heart failure).
Recheck the BP after rest (initial readings are often transiently high), use correct cuff size, and titrate to MAP. → BP recheck
In every reproductive-age woman, ask about pregnancy/postpartum status.

Skip the typing

Work the case in the Elevated Blood Pressure Workup — it records the target-organ-damage screen, the BP recheck, and the outpatient follow-up plan, and assembles an MDM that documents emergency was excluded (or treated) and why acute lowering was or wasn't indicated.

04Management

Asymptomatic severe HTN: no acute reduction; ensure primary-care follow-up before discharge (consider initiating oral therapy only in high-risk/likely-lost-to-follow-up patients).
Hypertensive emergency (most): short-acting titratable IV agents (nicardipine, clevidipine, labetalol), lowering MAP by no more than ~25% in the first hour.
Aortic dissection: esmolol to HR <60 first, then SBP <120.
Ischemic stroke: do not over-lower (thresholds 185/110 for thrombolysis, otherwise tolerate up to 220/120); ICH: SBP ~130–150.
Preeclampsia/eclampsia: labetalol/hydralazine/IR nifedipine + magnesium sulfate.
Avoid oral/IM/intranasal agents for emergencies, and avoid nitroprusside when alternatives exist.

05What to document

▼ weak

"BP 192/108. Gave clonidine, BP down to 160s. Discharged."

▲ defensible

"Asymptomatic BP 192/108 noted at triage; rechecked after rest 184/104. Target-organ screen negative — no headache/vision change/confusion/focal deficit, no chest/back pain or pulse differential, no dyspnea/edema, ECG without ischemia, no visual or neuro signs; not pregnant. No acute target-organ damage → asymptomatic severe hypertension, which does not require acute ED blood-pressure lowering (and over-treatment risks hypoperfusion). Not started on parenteral therapy. Primary-care follow-up arranged within a few days; counseled on adherence and return precautions for chest pain, severe headache, vision change, weakness, or shortness of breath."

06Where charts fail

Treating a number — acutely lowering asymptomatic severe HTN (risking hypoperfusion) instead of arranging follow-up.
Overdiagnosing "hypertensive emergency" → unnecessary admission/parenteral harm.
Missing target-organ damage (dissection, stroke, pulmonary edema) or preeclampsia (not asking about pregnancy).
No BP recheck after rest; titrating to systolic and diastolic separately instead of MAP.
Discharging without confirmed primary-care follow-up.

07Sources

Davis AB, Hughes K, Pun J, Goldstein S. Hypertensive emergencies: guidelines and best-practice recommendations. Emergency Medicine Practice (EB Medicine). 2023;25(6).
Wolf SJ, Lo B, Shih RD, et al. ACEP clinical policy: asymptomatic elevated blood pressure in the emergency department. Ann Emerg Med. 2013;62(1):59-68.
Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults. Hypertension. 2018;71(6):e13-e115.
American College of Obstetricians and Gynecologists. Gestational hypertension and preeclampsia. ACOG Practice Bulletin No. 222. 2020.

Elevated blood pressure: documentation that holds up