Accelerated Hypertension Causes and Risk Factors

Primary Underlying Mechanism

The European Society of Cardiology suggests that breakdown of vascular autoregulation from continuous exposure to extremely high blood pressure levels leads to characteristic vascular damage with myointimal proliferation and fibrinoid necrosis, with the severity of this proliferative vascular response directly paralleling both the severity and duration of blood pressure elevation 1, 2

The European Heart Society states that severe or poorly treated essential hypertension is the most common cause of accelerated/malignant phase hypertension, and the condition has become less prevalent due to earlier treatment initiation and more efficient therapeutic programs 1, 2, 3
Smoking is a significant contributor to accelerated hypertension, with a large proportion of patients being current smokers 1, 2, 3
The American Heart Association notes that Black individuals are more frequently affected by accelerated hypertension than Caucasians 1, 2, 3
Excessive dietary sodium contributes to blood pressure elevation and blunts the effects of antihypertensive medication, particularly in salt-sensitive populations 4
Heavy alcohol intake is associated with treatment-resistant hypertension, and cessation can reduce systolic blood pressure by 7.2 mmHg and diastolic by 6.6 mmHg 4

The American College of Cardiology recommends considering primary aldosteronism as a cause of secondary hypertension, which affects 1-11% of primary hypertension cases 5
Renovascular hypertension is the second most common cause of secondary hypertension, representing approximately 2% of adult hypertension cases 5
Obstructive sleep apnea is a common cause of treatment-resistant hypertension, with 83% of patients having unsuspected sleep apnea 4

The European Society of Hypertension notes that NSAIDs increase blood pressure by 3/1 mmHg and can antagonize RAAS-inhibitors and beta-blockers 7
Anticancer drugs, such as vascular endothelial growth factor inhibitors, increase blood pressure in 80-90% of patients 8, 9
Corticosteroids, calcineurin inhibitors, and sympathomimetics can also elevate blood pressure 7, 8
Antidepressants, such as SNRIs, increase blood pressure by 2/1 mmHg, and tricyclics have a 3.19 odds ratio for hypertension 7

The European Heart Society warns that the presence of secondary causes is often underestimated in clinical practice, and clinicians should maintain high suspicion for patients with severe hypertension, economically deprived populations, and those requiring fundoscopy to detect retinal hemorrhages, exudates, and papilledema 1, 2, 7