Hypotension

On NCLEX, the classic stem hands you a falling or low pressure and asks for the first action — and the answer usually isn’t a drug. Lay the patient flat and raise the legs, give an IV fluid bolus, then reassess; vasopressors like norepinephrine (first-line in septic shock) come only after adequate fluids fail to restore pressure. With orthostatic items, read the heart-rate response: a brisk rise of ≥20 bpm on standing suggests a non-neurogenic cause (hypovolemia or many drugs), whereas a HR that barely rises points to autonomic/neurogenic failure. Watch mean arterial pressure too — a MAP below 65 mmHg is the perfusion threshold that matters more than systolic alone.

The trap is treating hypotension as the emergency itself. Hypotension is a LATE sign of shock — by the time pressure falls, compensation is failing, so tachycardia and restlessness outrank a “normal” pressure as the early red flag. Don’t confuse it with edema (fluid shifted into the interstitium, not lost from circulation) or with perfusion (the oxygen-delivery goal you’re protecting).