OB Wheels vs WHO Contraception tool

Does the world need another OB-wheel-due-date-calculator app? You bet! OB Wheels combines three things that clinicians need to derive all the dates necessary in pregnancy care, and no other app has this combination. It contains a calendar calculator to determine EDD (EDC) from LMP or from a sonogram report. The calendar calculator also provides gestational age (EGA) as of any date for a given EDD or LMP. Because the calculator works off the real calendar, it is accurate for leap years too. Then for all of you who miss your cardboard OB wheel, the app contains one which you can rotate, pinch and zoom, and generally play with just like a regular cardboard wheel. It's a little tricky to learn how to plant two fingers and rotate them rather than pinch-and-zoom to get rotation versus resizing. But the wheel works and it is accurate, especially so because you can zoom in to be sure where the little date hash lines lie. Finally, the app notes the most recent committee opinion scheme from ACOG on how one might reconcile due dates from LMP and sonograms to arrive at a single final EDD. To my knowledge, the scheme is authority-based and no better or worse than other schemes, but my practice and my learners need a single clear scheme, so this app includes one for easy reference. As an educator and clinician myself, I am grateful for feedback. Email me via the contact email at my website.

This tool is the digital version of the MEC Wheel. It contains the medical eligibility criteria for starting use of contraceptive methods, based on Medical Eligibility Criteria for Contraceptive Use, 5th edition (2015), one of WHO’s evidence-based guidelines. It guides family planning providers in recommending safe and effective contraception methods for women with medical conditions or medically-relevant characteristics. The tool includes recommendations on initiating use of nine common types of contraceptive methods: 1. Combined pills, COC (low dose combined oral contraceptives, with ≤ 35 μg ethinyl estradiol) 2. Combined contraceptive patch, P 3. Combined contraceptive vaginal ring, CVR 4. Combined injectable contraceptives, CIC 5. Progestogen-only pills, POP 6. Progestogen-only injectables, DMPA (IM,SC)/NET-EN (depot medroxyprogesterone acetate intramuscular or subcutaneous or norethisterone enantate intramuscular) 7. Progestogen-only implants, LNG/ETG (levonorgestrel or etonogestrel) 8. Levonorgestrel-releasing intrauterine device, LNG-IUD 9. Copper-bearing intrauterine device, Cu-IUD