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.
1 Calculating the gestational age from the conception date is more accurate. 2  It is the preferred way of the medical textbooks. 3  How far along you are in your pregnancy (from the first day of the last menstrual cycle). 4  Calculating the gestational age from the from the first day of the last menstrual cycle is more practical. Sperm lives for about 2 days. Because of the uncertainly of the exact conception date, obstetricians prefer to calculate the fetal age from the first day of the last menstrual cycle.