Obstetrum: OB-GYN Calculator

Evidence-based obstetric calculator with 11+ clinical tools. Gestational age dating, fetal weight estimation, obstetric insulin dosing with 7 international guidelines. Powered by ACOG, WHO 2025, and FIGO. This app is not a medical device and does not diagnose, treat, or prevent any condition. 🔬 PRENATAL CARE CALCULATORS • Gestational Age — ACOG CO 700 dating hierarchy: IVF > 1st trimester CRL USG > LMP > 2nd/3rd trimester USG • Estimated Fetal Weight — Hadlock 1991 formulas, INTERGROWTH-21st percentiles, p3–p97 classification • Fundal Height — INTERGROWTH-21st percentiles, weeks 13–40, serial trend curve • Gestational Weight Gain — IOM guidelines by pre-pregnancy BMI and gestational age • Fetal Doppler — Umbilical fluxometry, resistance indices, FGR staging • Insulin in Pregnancy — 7 guidelines: ADA/ACOG, NICE, FIGO, ALAD, ADIPS, CDA, GEDE. GDM + pregestational T1/T2. Corticosteroid protocol. FDA 2026 CDS traceability ⚡ OBSTETRIC EMERGENCIES • Oxytocin — Induction and augmentation protocols with dose escalation • Magnesium Sulfate — Zuspan protocol, loading and maintenance dosing • Bishop Score — Score 0–13, favorable/unfavorable classification, cervical ripening recommendation • Emergency Algorithms — Clinical decision trees for urgent management 🩸 POSTPARTUM HEMORRHAGE (PPH) Full module based on WHO 2025 Bundle MOTIVE protocol: • Obstetric shock index • Medications with evidence levels A/B/C • Drug-specific contraindications • Risk stratification and severity classification 🤰 PERINATAL PERIOD • VBAC Predictor — 3 models: Grobman 2007, updated Grobman 2021, and Flamm-Geiger 📊 INTERNATIONAL STANDARDS Every result cites its source. Implemented guidelines: ACOG CO 700, WHO 2025, FIGO, NICE, ADA, ALAD, ADIPS, CDA, GEDE, IOM, Hadlock 1991, INTERGROWTH-21st, Zuspan, Grobman, Flamm-Geiger. 📋 CLINICAL RECORDS • Patient calculation history with audit trail • Professional clinical PDF reports with plotted percentiles and physician signature • Record comparison: side-by-side clinical evolution • Local database — your data never leaves your device 🔒 TOTAL PRIVACY Local SQLite database. No remote servers, no mandatory accounts, no cloud sync. Your clinical data stays on your device. 💎 OBSTETRUM PREMIUM All calculators are available without a subscription. Premium unlocks: • Unlimited patient records • Professional clinical PDF reports • Clinical record comparison • Ad-free experience Clinical decision support tool for obstetric healthcare professionals.