TAILIEUCHUNG - EARLY PREGNANCY COMPLICATIONSSPONTANEOUS ABORTION

Spontaneous abortion (miscarriage) is the termination of pregnancy before completion of the 20th gestational week. The term applies to both live and stillborn fetuses weighing 500 g. However, a fetus need not be identified if other products of conception are present (., placenta or membranes). Familiarity with the local legal definition is mandatory because there is considerable state to state variation. Loss of pregnancy is very common. Recent estimates are that only of pregnancies result in live births, end in legal abortions, have spontaneous abortions, are ectopic gestations, and end in fetal deaths. Other. | SPONTANEOUS ABORTION Spontaneous abortion miscarriage is the termination of pregnancy before completion of the 20th gestational week. The term applies to both live and stillborn fetuses weighing 500 g. However a fetus need not be identified if other products of conception are present . placenta or membranes . Familiarity with the local legal definition is mandatory because there is considerable state to state variation. Loss of pregnancy is very common. Recent estimates are that only of pregnancies result in live births end in legal abortions have spontaneous abortions are ectopic gestations and end in fetal deaths. Other estimates place spontaneous abortion at 15 -40 . The earlier in gestation the more likely is spontaneous abortion. About 75 occur before 16 weeks and approximately 60 occur before 12 weeks. A major difficulty in detailing exact numbers is the variability of methods for pregnancy diagnosis. For example a serum beta-subunit hCG determination will detect very early pregnancies and thus more losses than the available standard urine pregnancy tests. At least 80 of all pregnancies terminate spontaneously before the woman or physician is aware of the pregnancy subclinical or undiagnosed spontaneous abortion . Table 10-1 estimates the losses with in vitro fertilization which would be included in the subclinical category . Mortality is rare per 100 000 with spontaneous abortion but risk factors include women age 35 years races other than white and abortion in the second trimester. Direct causes of deaths include infection 59 hemorrhage 18 embolism 13 complications from anesthesia 5 and other 5 . Disseminated intravascular coagulation complicates many of the cases proceeding to death. 295 Copyright 2001 The McGraw-Hill Companies. Click Here for Terms ofUse. 296 BENSON PERNOLL S HANDBOOK OF OBSTETRICS AND GYNECOLOGY TABLE 10-1 IN VITRO FERTILIZATION LOSSES 16 of fertilized ova do not divide 15 of fertilized ova are lost before .

TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.