Orthostatic Hypotension in Chronic Kidney Disease

Mechanisms and Prevalence

Autonomic dysfunction is a primary mechanism of orthostatic hypotension in CKD patients, with impaired heart rate variability during orthostasis, leading to blunted heart rate responses when standing 1, 2
Uremic neuropathy directly contributes to autonomic dysfunction, creating persistent orthostatic hypotension that worsens as kidney function declines 3, 4

Diabetic CKD patients with autonomic dysfunction show exaggerated drops in systolic, diastolic, and mean arterial pressures compared to those without autonomic dysfunction 4
Dialysis patients, particularly anephric patients and those on long-term dialysis, are at high risk of orthostatic hypotension 4
Elderly CKD patients (≥60 years) with multiple comorbidities are at increased risk of orthostatic hypotension 3
Patients with severe anemia or hypoalbuminemia are at high risk of orthostatic hypotension 4

The American Heart Association recommends mandatory orthostatic testing before initiating or intensifying blood pressure medications in CKD patients, which involves measuring blood pressure at 1 and 3 minutes after standing 5, 6, 7
Orthostatic hypotension is defined as a fall of ≥20 mmHg systolic or ≥10 mmHg diastolic 1, 2

The European Society of Cardiology recommends switching medications that worsen orthostatic hypotension rather than simply reducing blood pressure treatment intensity 5
SGLT2 inhibitors have minimal blood pressure impact and should be continued in CKD patients with eGFR >20 mL/min/1.73 m² 5
The National Kidney Foundation recommends tailoring regimens in elderly CKD patients with gradual escalation and close monitoring for orthostatic hypotension, electrolyte disorders, and acute kidney function deterioration 6, 7, 9

The American Journal of Kidney Diseases recommends non-pharmacological interventions, such as compression stockings and abdominal binders, as first-line treatment for CKD patients with orthostatic hypotension 8
Low-temperature or isothermic dialysis can improve vascular reactivity 3, 4
Adequate salt intake, balanced against volume management needs, can help manage orthostatic hypotension 10