270 likes | 582 Views
Obstetrics. Definition of Obstetrics. Branch of medicine dealing with the pregnant woman during pregnancy, child birth and period following birth. Word Parts. Semen. Mixture of sperm & secretions in seminal vesicles Insemination – deposit of semen in the female reproductive tract.
E N D
Definition of Obstetrics • Branch of medicine dealing with the pregnant woman during pregnancy, child birth and period following birth
Semen • Mixture of sperm & secretions in seminal vesicles • Insemination – deposit of semen in the female reproductive tract
Artificial Insemination • Semen is inserted into uterus via a cannula instead of coitus • AI (AIH) by husband • AI (AID) by donor
Fertilisation • Is the union of sperm and ovum • Fertilised ovum is called zygote • Zygote travels down fallopian tube to endometrium where it implants itself
Foetus development • Embryo – developing human during first 2 months - embryonic membranes form which protect & nourish the embryo • Foetus – developing human after the second month - amniotic membrane forms surrounds foetus and is filled with amniotic fluid - amniotic fluid is a shock absorber for the foetus
Placenta • Develops between the embryo and endometrium • Exchanges nutrients and waste between mother and foetus • Also secretes hormones to maintain pregnancy
Terms related to placenta • Adherent placenta – placenta is fused to uterine wall • Retained placenta – placenta is not expelled • Placenta praevia – placenta forms abnormally in lower part of uterus over the internal opening of the cervix Act 3
Umbilical cord • Connects foetus to placenta • Transports blood and nutrients to the foetus
Gestation • Period of time embryo and foetus is carried in uterus • Usually 280 days
Antenatal • Period from conception to birth • 3 trimesters – 3 months each
Labour and Delivery • Parturition refers to birth • Labour is period preceding birth • Uterine contractions are called eutocia • Syntoconon is a drug to induce uterine contractions
Stages of labour • Dilation – onset of labour to full dilation of 10 cm • Expulsion – full dilation to delivery • Placental – delivery of placenta and occurs a few minutes after birth
Foetus during labour • Lies in a lateral position in uterus • Engagement – when head moves down into cervix • Presentation – part of foetus that is touched by examining finger through the cervix
Puerperium • Period 6 – 8 weeks following birth • Reproductive system reverts to pre pregnant state
Definitions • Post partum haemorrhage – excessive bleeding from birth canal • Eclampsia – sudden convulsion due to toxaemia of pregnancy • Stillbirth – foetus is born dead • Congenital – present at time of birth • Caesarian section – delivery by surgical excision into abdominal wall • Forceps – surgical instruments used to help delivery Act 4
Mammary Glands • Function is milk secretion i.e. lactation • Ducts convey milk from lobes to the exterior • The circular pigmented area surrounding the nipple is known as the areola
Miscarriage • Expulsion of products of conception before 20 weeks