Post-laparotomy shock with AKI, refeeding risk and hyperglycaemia — feed, bridge, restrict and cap

Management walkthrough

Resuscitation and perfusion first — nutrition serves recovery, never precedes it. He is in vasopressor-dependent shock with a tenuous post-laparotomy abdomen: complete resuscitation, confirm source control, and read the abdomen (distension, drain output, stool, flatus, lactate trajectory) before any feeding rate is chosen. Shock owns pressors and perfusion targets — this station owns what follows.^[11]

Start enteral trophic, withhold PN, bridge only if shock escalates. Begin low-volume EN now and advance on tolerance and perfusion: EDEN and PermiT both tied full against moderate delivery on death with less intolerance on the moderate side.^[1][3] Do not top up with PN on day 2: EPaNIC favours day-8 initiation with faster recovery and fewer infections.^[6] If noradrenaline escalates with rising lactate and an unpassed abdomen, stop advancing EN and bridge with PN — NUTRIREA-2 showed forced isocaloric EN in shock raised bowel ischaemia without survival gain.^[11]

Dose protein for the AKI, restrict for the phosphate fall. Oliguric kidney injury means usual-dose protein, not 2.2 g per kg per day: EFFORT harm concentrated in AKI with RR 1.4 for 60-day death.^[13] Eight starved days plus a post-feed phosphate fall means temporary macronutrient restriction with electrolyte repletion: the refeeding trial improved day-60 survival to 91 percent, and relative phosphate falls mark early-PN harm.^[21][9]

Cap glucose, prokinet intolerance, route for delivery. Hold glucose at 180 or less with frequent measurement — intensive 81-to-108 targeting raised death with thirteen-fold severe hypoglycaemia.^[25] Treat high residuals with prokinetics (moderate-certainty intolerance reduction) and consider postpyloric placement for delivery shortfalls — never as pneumonia prevention, which it is not.^[29][27]

Close with disposition and honesty. Daily intensivist, surgical, dietetic and pharmacy review of perfusion, tolerance, phosphate and glucose until stable ward feeding resumes. Name the gaps: no verified calorie formula, no adult residual cutoff, and guideline recommendations mostly on moderate evidence or expert opinion — individualise and document why.^[31]