Discussion

This case represents an uncommon presentation of hypertensive emergency with several atypical features relevant to emergency physicians (Table 2). Only 8-23% of hypertensive emergencies occur in patients without previously known hypertension [5,6]. Furthermore, a hypertensive emergency is more common in persons older than 60 years of age [7], and rare in patients such as this 25-year-old. The patient's constellation of symptoms--painless hematuria, epistaxis, mild headache, and left arm numbness--demonstrates the diverse manifestations of end-organ damage that can occur in hypertensive emergency, including acute kidney injury, hypertensive retinopathy, and neurologic symptoms [2,3]. This case underscores the importance of maintaining a high index of suspicion for hypertensive emergencies in young adults presenting with multisystem symptoms, even without a prior diagnosis of hypertension, and emphasizes the need for aggressive evaluation of secondary causes in this age group [8,9].

Feature: | Typical Hypertensive Emergency | Present Case
Age | >60 years of age [7] | 25 years old
Prior Diagnosis of Hypertension | 77-92% of patients have known history [5,6] | No prior history of hypertension
Risk Factors | Illicit drug use, current smokers, history of chronic kidney disease [2,7] | No risk factors
Presenting Symptoms | Headache, chest pain, dyspnea, dizziness, epistaxis [2] | Painless hematuria, epistaxis, mild headache, and left arm numbness
End-Organ Damage Pattern | Pulmonary edema (28%), ischemic stroke (24%) [3] | Renal failure, cardiac ischemia, retinopathy

Emergency department recognition and initial management

The patient's presentation exemplifies the importance of recognizing end-organ damage rather than focusing solely on numeric blood pressure [2,7,10,11]. With blood pressure of 253/167 mmHg and evidence of acute kidney injury (creatinine 2.18), cardiac ischemia (troponin elevation, EKG changes), and hematuria, this patient met criteria for hypertensive emergency requiring immediate intervention. The 2025 AHA/ACC guidelines recommend reducing blood pressure by 25% in the first hour, followed by gradual further reduction over the next 24-28 hours [2]. Overly aggressive blood pressure reduction can result in vital organ hypoperfusion due to loss of autoregulation [2,7].

In this case, the initial treatment was with labetalol IV, followed by nicardipine infusion. Nicardipine is a preferred agent for a hypertensive emergency with acute kidney injury, offering titratable blood pressure control with rapid onset and no negative inotropic effects [2,7]. Studies have shown faster achievement of blood pressure control and less variability with nicardipine compared to labetalol [2,7]. The target of 20% reduction was appropriate for this patient's presentation.

Secondary hypertension evaluation in young adults

The patient's young age without known hypertension mandated aggressive evaluation for secondary causes. Approximately 29.6% of hypertensive patients aged 18-40 years have identifiable secondary causes, with primary aldosteronism being most common (54.8%), followed by renovascular hypertension (18.4%) and primary kidney disease (12.9%) [9]. Importantly, the prevalence of secondary hypertension in young adults is high, regardless of blood pressure level, emphasizing that all young patients with hypertension warrant screening [8,9,12].

Disposition and prognosis

Hypertensive emergencies carry significant morbidity and mortality [2,3]. All patients with a hypertensive emergency should be admitted to an intensive care unit for continuous blood pressure monitoring and intravenous antihypertensive therapy [2,7]. Chronic kidney disease is present in 79% of patients admitted with acute severe hypertension, and any degree of acute kidney injury is associated with a greater risk of morbidity and mortality, with significantly higher 90-day mortality [13-16].