Nonoperative Supportive Care Techniques
Core concepts
Supportive care is active medicine. Candidates must know mechanical ventilation modes and weaning (spontaneous breathing trials, sedation interruption, lung-protective settings), analgesia-first sedation strategies, and the ABCDEF bundle to reduce delirium and ventilator days. Hemodynamic support includes fluid responsiveness assessment (dynamic measures over static pressures), vasopressor selection (norepinephrine first in septic shock, vasopressin as adjunct, inotropes for contractility), and recognition of vasopressor extravasation risk.
Other domains include nutrition (early enteral feeding when feasible, recognizing refeeding risk), glycemic control avoiding hypoglycemia, stress ulcer prophylaxis in high-risk patients, venous thromboembolism prophylaxis, and renal support with attention to drug dosing. Transfusion thresholds, electrolyte correction, and temperature management round out supportive care. Communication, goals-of-care discussions, and family engagement are core ICU skills, not optional extras.
Traps
Questions test the error of using static filling pressures to predict fluid responsiveness, the misconception that more sedation is safer, and the assumption that all ICU patients need stress ulcer prophylaxis. Another trap is delaying enteral nutrition for absent bowel sounds, or overfeeding the refeeding-risk patient.
Worked rule of thumb
A ventilated patient is hypotensive with a central venous pressure of 12 mmHg. Rather than giving fluid based on the pressure, assess responsiveness with a passive leg raise or pulse pressure variation; if unresponsive, start norepinephrine. Rule: dynamic tests guide fluids; vasopressors buy time while the cause is treated.
Exam strategy
For each supportive intervention, ask what outcome it improves, in whom, and what harm it risks; the best answer usually pairs a benefit with an appropriate patient selection.