Hypotension Management

Introduction to Hypotension

The American Heart Association and the American College of Cardiology suggest that slower titration of antihypertensive medications is necessary in susceptible individuals to avoid hypotension, which can progress to symptomatic hypotension and increase cardiovascular mortality in certain populations 1, 2

Symptomatic hypotension may lead to syncope, falls, reduced organ perfusion, and cognitive impairment, especially in certain populations that are more susceptible to orthostatic changes and have a higher risk of medication-induced hypotension 1
The American Heart Association recommends individualizing salt intake based on dialysis schedule and residual renal function in patients with End-Stage Renal Disease (ESRD), and advises against the use of Fludrocortisone in ESRD due to the risk of fluid retention, electrolyte abnormalities, and worsening supine hypertension 3
The American Diabetes Association recommends reviewing and discontinuing medications that may exacerbate orthostatic hypotension, such as opioids, anticholinergics, and tricyclic antidepressants, in patients with ESRD and polypharmacy 4
Orthostatic hypotension is defined as a decrease in systolic blood pressure ≥20 mmHg or diastolic ≥10 mmHg within 3 minutes of standing from a seated or supine position, and diagnosis involves measuring blood pressure after 5 minutes of lying or sitting, then 1 and 3 minutes after standing, and documenting symptoms that correlate with hypotension 5, 6, 7, 8, 9

The American Heart Association recommends acute water ingestion (Class I recommendation, Level B-R evidence) for occasional, temporary relief of orthostatic hypotension 10
Physical counter-pressure maneuvers (Class IIa recommendation, Level C-LD evidence), such as leg crossing and squatting, are suggested to increase peripheral resistance 10
Compression garments (Class IIa recommendation, Level C-LD evidence), including abdominal binders and lower extremity compression stockings, are recommended to help manage orthostatic hypotension 10
Increased salt and fluid intake (Class IIb recommendation, Level C-LD evidence) is recommended, targeting 2-3 liters of fluid daily, unless contraindicated, to help expand plasma volume 10
Elevating the head of bed during sleep and small frequent meals are also recommended as non-pharmacological approaches, according to the European Heart Journal and the American Diabetes Association 5, 11, 3, 12, 13
Regular exercise can help prevent deconditioning in patients with orthostatic hypotension, as recommended by the American Diabetes Association 14

The following medications are used to treat orthostatic hypotension:

Medication	Dosage	Mechanism of Action
Midodrine	10 mg up to 2-4 times daily	Alpha-1 agonist
Fludrocortisone	0.05-0.1 mg daily, titrated to 0.1-0.3 mg daily	Sodium retention, vessel wall constriction, and reduced vessel distensibility
Droxidopa	100-600 mg three times daily, last dose at least 4 hours before bedtime	FDA-approved for neurogenic orthostatic hypotension
Erythropoietin	25-75 U/kg three times weekly	For patients with anemia and severe autonomic dysfunction

Midodrine (Class IIa recommendation, Level B-R evidence) and Droxidopa (Class IIa recommendation, Level B-R evidence) are recommended as first-line treatments for orthostatic hypotension 10
Fludrocortisone (Class IIa recommendation, Level C-LD evidence) is suggested as an alternative treatment option, with a dosage of 0.05-0.1 mg daily, titrated to 0.1-0.3 mg daily 10
Pyridostigmine and octreotide are recommended as additional options for refractory cases (Class IIb recommendation, Level C-LD evidence) 10

The primary therapeutic goal is to minimize postural symptoms, rather than restore normotension, as recommended by the American Diabetes Association 11, 14
Target BP goal is <130/80 mmHg for most adults, as suggested by the American Heart Association, and <130 mmHg for ambulatory community-dwelling older adults (≥65 years), according to the American Geriatrics Society 15
Regular blood pressure measurements in supine and standing positions are necessary to assess treatment effectiveness and monitor for supine hypertension, especially with pressor medications, as recommended by the American Heart Association and the European Society of Cardiology 16, 14, 8, 17, 13
Regular follow-up every 3 months once stabilized is recommended for patients with chronic hypotension, according to the British Medical Journal 18

Patient education and reassurance about the benign nature of the condition and risk of recurrence is important, as well as recognition of prodromal symptoms to help patients identify an impending episode and take preventive actions, as suggested by the European Heart Journal guidelines 8, 17, 13
Referral to a specialist is necessary for cases of malignant or accelerated phase hypertension, suspected secondary causes of hypotension, refractory hypotension despite initial management, and hypotension with multiple cardiovascular risk factors, as recommended by the British Medical Journal 18