Medical Education

IV Drip Rate Calculator (Gravity) Field Guide: When Volume, Drop Factor, and Time Decide Whether the Gravity Drip Lands at 83 gtt/min or Drifts Past the Hour Mark

By xiezixing 2026年9月25日

A clinical field guide for the gravity IV drip rate calculation: when the drop factor (10/15/20/60 gtt/mL) decides the rate, when the rounding drift compounds across the bag, and why vasoactive and pediatric infusions always need a pump, not gravity.

TPN Osmolality Estimator Field Guide: When Five Components, Three Failure Modes, and the Calcium-Phosphate Hole Decide Whether Your Admixture Is Peripheral or Central

By xiezixing 2026年9月23日

Estimate first, access second. The osmolality of a parenteral nutrition admixture is the single number…

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Alveolar Ventilation Calculator Field Guide: When Tidal Volume, Dead Space, and Rate Decide Whether Your Patient Is Hypoventilating

By xiezixing 2026年9月10日

Alveolar ventilation is the one respiratory number that decides hypercapnia versus alkalosis before the ABG comes back. Two patients on the same minute ventilation can sit on opposite sides of the PaCO2 curve.