Of the weight loss surgeries currently available, gastric sleeve, or sleeve gastrectomy, is a safe choice with less side effects than other types that transitions well into later surgeries if need be. But how does this popular procedure work? Gastric Sleeve Basics. A sleeve gastrectomy is performed laparoscopically using a small incision.
How to Calculate Gestational Age. 1  Find the date of the first day of your last menstrual period on a calendar. 2  Count the number of full weeks that have passed from the date in Step #1 to today's date. For example, if your last menstrual period started on July 1st and today's date is August 1st, the gestational age is 4 weeks.
Related calculators: Calculate your pregnancy length which shows how many weeks you were pregnant. To adjust your baby's age, the number of weeks your baby is premature is subtracted from your baby's chronological age in weeks. For example, if your baby was 5 weeks premature (ie. born at week 35 based on full term of 40 weeks), and it's been 20 weeks since your baby was born, your baby's corrected age is 15 weeks old (20 - 5 = 15). Until recently, babies born between 37 weeks and 42 weeks were considered full-term, with 40 weeks from last menstrual period (LMP) being the average.