trinkets.md — Clinical micro-tools for physicians and healthcare workers

Convert between loop diuretics with route-aware dosing and bioavailability context.

Convert between corticosteroids with duration-of-action and mineralocorticoid-activity axes.

ASA fasting guidelines: when is a patient cleared based on last intake type and time?

Track day N of M for an antibiotic course. Enter start date and course length.

Calculate when an IV bag will finish based on volume remaining and infusion rate.

Calculate corrected AG, delta ratio, and interpret the acid-base disturbance.

Calculate serum osmolality and osmolar gap with optional ethanol correction.

Corrected calcium, corrected sodium, and reticulocyte production index in one page.

Calculate corrected QT interval and flag common QT-prolonging medications.

Calculate free water deficit and safe correction rate for hypernatremia.

Mosteller, Du Bois, and Haycock BSA formulas side by side for chemo, cardiac index, and pediatrics.

Devine ideal body weight, adjusted body weight, and Janmahasatian lean body weight with dosing-weight guidance.

Apply the age × 10 cutoff for patients over 50 to safely rule out PE/DVT without imaging.

Three estimates of kidney function side by side, with CKD staging and a note on which to use for drug dosing.

Holliday-Segar maintenance rate with the 2018 AAP isotonic-fluid recommendation surfaced.

4-2-1 base rate plus fever, ongoing-loss, and fluid-restriction adjustments.

Convert between metoprolol, carvedilol, bisoprolol, atenolol, propranolol, nebivolol, and labetalol with HF target-dose context.

Cross-convert ACE inhibitors and angiotensin-receptor blockers with HF target-dose flags.

Map any statin dose to its ACC/AHA intensity tier and list equivalent options at the same intensity.

Morphine-equivalent conversion across morphine, oxycodone, hydromorphone, hydrocodone, and fentanyl patch with explicit 25–50% cross-tolerance reduction.

Diazepam-equivalent dose across alprazolam, lorazepam, clonazepam, midazolam, and others, with Ashton-style taper estimate.

Identify the primary acid-base disturbance, check compensation against Winter's and respiratory rules, and detect mixed disorders.

Classify iron studies into IDA, anemia of chronic disease, mixed, iron overload, or thalassemia/normal.

Hepatocellular vs cholestatic vs mixed via R-factor, with AST/ALT ratio and pattern-specific differential.

Classify thyroid lab patterns: primary vs central, overt vs subclinical, sick euthyroid, T3 toxicosis.

FeNa and FeUrea side by side, with the diuretic-aware switch to FeUrea when FeNa is unreliable.

Estimate KCl deficit and route based on serum K, ECG status, and renal function — with Mg reminder.

Pre-op hold times for apixaban, rivaroxaban, edoxaban, and dabigatran by CrCl and bleeding risk, with restart guidance.

Generate a day-by-day prednisone taper schedule with HPA-axis-aware slow zone below 10 mg.