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Immediate threats
High-risk aortic stenosis presentation
Hypotension or shock
Fixed outflow obstruction physiology
Preload dependence
Acute pulmonary edema
Flash pulmonary edema
Rapid oxygenation failure
Exertional syncope
Malignant arrhythmia risk
Sudden cardiac death risk
Ongoing ischemic chest pain
Demand ischemia risk
Concomitant coronary disease risk
Monitoring and access
Resuscitation setup
Cardiac monitor and defibrillator pads
Immediate cardioversion capability
Pacing capability if bradyarrhythmia
Two large-bore IV lines
Rapid vasopressor initiation readiness
Blood product readiness if GI bleed on anticoagulation
Arterial line if unstable
Beat-to-beat blood pressure titration
Vasopressor and afterload management safety
Hemodynamic targets
Perfusion goals
Mean arterial pressure at least 65 mmHg
Coronary perfusion dependence
Avoid diastolic hypotension
Sinus rhythm priority
Atrial contribution to LV filling dependence
Atrial fibrillation intolerance
Heart rate avoidance zones
Tachycardia worsens filling time
Bradycardia worsens cardiac output
Immediate stabilization logic
Shock management
If hypotension with suspected severe aortic stenosis, vasopressor-first strategy
Phenylephrine infusion option
Norepinephrine infusion option
If pulmonary edema with preserved blood pressure, cautious diuresis
Small IV loop diuretic dosing
Frequent reassessment for hypotension
If unstable tachyarrhythmia, synchronized cardioversion
Atrial fibrillation with hypotension trigger
Ventricular tachycardia trigger
Consultation triggers
Early specialty activation
Cardiology for symptomatic severe aortic stenosis
Urgent echocardiography pathway
Valve team pathway for AVR planning
Cardiothoracic surgery or structural heart team for decompensation
TAVR candidacy screening
Bridge therapy discussion
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