INDS 211 Lecture Notes - Lecture 27: Gestational Sac, Yolk Sac, Vaginal Bleeding

• School: McGill University
• Department: Interndisciplinary Studies
• Course: INDS 211
• Professor: Bill Buckett

Document Summary

Def | miscarriage: 1) loss of intra-uterine pregnancy. <24 completed weeks, 2) loss of fetus/embryo <500g and <22 completed gestational weeks these definitions are changing because of our ability to maintain premature neonates. Epidemiology: most common complication of pregnancy; 20, traumatic/highly emotional: impact often underestimated by many involved in delivery of care, chances of pregnancy loss decrease as no. weeks since ovulation increases. Yolk sac (curved arrow) with embryo (between x"s) 6 weeks; 5mm size, some fetal heart beat apparent. 10 weeks; appendages begin to be evident, 3cm size abnormally empty large gestational sac = impaired development of icm, likely massive chromosomal abnormality: arrested pregnancy/missed abortion: embryo (arrow) is relatively small compared to large gestational sac. Inevitable miscarriage (abortion in progress): low lying gestational sac (thick arrow), decidual reaction and hemorrhage (mixed hyper- hypo-echoic material between arrowheads. Incomplete abortion/miscarriage: patient presented with continued vaginal bleeding after spontaneous abortion.