Uncontrolled hypertension: The everyday diagnosis we still get wrong

Uncontrolled hypertension is one of the most familiar problems in general practice, and one of the most frequently underestimated.
 
While treatment options continue to evolve, the core challenge for GPs is often more basic: determining whether the blood pressure reading in front of us truly reflects the patient’s usual blood pressure.
 
Australian guidance continues to emphasise that elevated clinic readings should trigger confirmation rather than immediate labelling.
 
Office blood pressure measurement alone frequently over‑ or under‑estimates true blood pressure due to white‑coat and masked hypertension.
 
Ambulatory blood pressure monitoring (ABPM) remains the reference standard for diagnosis and classification, capturing daytime, night‑time and 24‑hour patterns that clinic readings cannot.
 
Home blood pressure monitoring also plays an important role, particularly for follow‑up and patient engagement.
 
A few practical diagnostic pearls are worth revisiting.
 
First, technique matters: correct cuff size, validated automated devices, seated rest, and repeated readings reduce error.
 
Second, consider masked hypertension when clinic readings appear acceptable but cardiovascular risk or target‑organ damage is disproportionate.
 
Third, remember that night‑time blood pressure and dipping status carry prognostic significance; these features are only detectable with ABPM.
 
Once uncontrolled hypertension is confirmed, another common barrier emerges: therapeutic inertia.
 
Australian and international expert commentary suggests blood pressure control is often delayed by prolonged reliance on single‑agent escalation, rather than timely optimisation or combination therapy.
 
In practice, this means many patients spend years above target while treatment intensification is deferred.
 
Managing overall cardiovascular risk alongside blood pressure, rather than focusing on blood pressure thresholds alone, is increasingly emphasised.
 
When blood pressure remains elevated despite treatment, it is critical to distinguish true resistant hypertension from apparent resistance.
 
Common contributors include sub‑optimal regimens, poor adherence, NSAID use, excess sodium or alcohol intake, obesity, obstructive sleep apnoea, chronic kidney disease and primary aldosteronism.
 
Confirming true resistance requires out‑of‑office measurement, careful medication review and exclusion of secondary causes before escalation or referral.
 
The treatment landscape is also evolving.
 
For carefully selected patients with persistent uncontrolled or resistant hypertension despite optimised therapy, renal denervation (RDN) has re‑emerged following contemporary sham‑controlled trials demonstrating modest but clinically meaningful reductions in ambulatory and office blood pressure.
 
While not a first‑line therapy and not a replacement for lifestyle or pharmacological management, RDN is increasingly recognised as an option within specialist‑led care pathways.
 
For GPs, the role remains central: identify uncontrolled hypertension accurately, avoid premature labelling, intensify treatment appropriately, and refer patients who may benefit from further evaluation or intervention.
 
Uncontrolled hypertension is an everyday diagnosis, but it requires a disciplined, modern approach to avoid becoming an accepted norm.

To explore practical updates on diagnosing and managing uncontrolled hypertension, visit the Pressure Point education series and related GP CPD resources.
 
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