Management of Hypotension

Critical Thresholds Requiring Immediate Intervention

The European Society of Cardiology recommends that severe hypotension (systolic BP <80 mmHg) be treated as a medical emergency, even if initially asymptomatic, due to the risk of organ perfusion and cardiovascular collapse 3, 4
Norepinephrine (0.1-0.5 mcg/kg/min IV) is the first-choice vasopressor for severe hypotension, targeting a mean arterial pressure ≥65 mmHg 4
The American Heart Association recommends establishing IV access immediately and beginning continuous vital sign monitoring in patients with severe hypotension 4
Assessing for end-organ damage, such as altered mental status, decreased urine output, elevated lactate, and cool extremities, is crucial in patients with severe hypotension 3, 4

The American College of Cardiology recommends that asymptomatic or mildly symptomatic low blood pressure should not trigger reduction or cessation of guideline-directed medical therapy (GDMT) in patients with HFrEF 1, 2
Reduction or cessation of GDMT is advisable only when systolic BP <80 mmHg or when low BP causes relevant symptoms, such as significant orthostatic hypotension, severe fatigue, or dizziness 1, 2
SGLT2 inhibitors and mineralocorticoid receptor antagonists (MRAs) have minimal BP-lowering effects and may actually increase BP in low BP groups, and should be continued preferentially 1, 2

The European Society of Cardiology recommends that treatment is indicated when orthostatic hypotension (≥20 mmHg systolic or ≥10 mmHg diastolic drop within 3 minutes of standing) causes symptoms that impair quality of life 6
Confirming diagnosis by measuring BP after 5 minutes supine/sitting, then at 1 and 3 minutes after standing, is essential in patients with orthostatic hypotension 6

The European Society of Cardiology recommends that in patients with baseline hypertension, acute BP lowering should be cautious to avoid organ hypoperfusion 7
For acute ischemic stroke, only treat if BP >220/120 mmHg, and reduce MAP by 15% over 1 hour, unless thrombolysis is planned, in which case target <185/110 mmHg 7

The American Heart Association recommends not treating asymptomatic low BP numbers alone, but rather assessing organ perfusion and symptoms first 1, 5, 2
Not discontinuing HF medications prematurely in stable patients with low BP, but rather investigating other causes first, is recommended by the American College of Cardiology 5
Not using beta-blockers to treat hypotension, as they lower BP, is recommended by the American Heart Association, unless there are other compelling indications 4

Continuously monitoring BP, heart rate, urine output, mental status, and lactate clearance during acute resuscitation is crucial, according to the American Heart Association 4
For chronic orthostatic hypotension on midodrine, monitoring both standing and supine BP regularly to detect supine hypertension is essential, as recommended by the European Society of Cardiology 6