OBSTETRIC NURSING Flashcards
What chromosomes do males and females contribute during sex?
• The male sperm contributes an X or a Y chromosome; the female ovum contributes an X chromosome.
How many chromosomes does fertilisation produce in total?
A total of 46 chromosomes, including an XY combination (male) or an XX combination (female).
What happens during first trimester of pregnancy?
• Organogenesis occurs during the first trimester of pregnancy, specifically, days 14 to 56 of gestation.
What occurs after ovum fertilisation?
Implantation in the uterus occurs 6-10 days after…
What is the chorion and its purpose?
The outermost extraembryonic membrane that gives rise to the placenta.
Function of the corpus luteum
Secretes large quantities of progesterone.
At what time are developing cells referred to as fetus?
From the 8th week of gestation through delivery
Define a zygote
Union of male and female gamete which divides into fertilised ovum
Time duration for spermatozoa to remain in vagina after sexual intercourse.
72 hours
What happens when ovum is fertilised by spermatozoon carrying a Y chromosome?
It forms a male zygote
Define implantation
When the cellular walls of the blastocyte implants itself in the endometrium, usually 7 to 9 days after fertilization.
The time period for the beginning of heart development in the embryo.
It begins at 2 to 4 weeks and is complete by the end of the embryonic stage.
What should patients do when they miss their period in the course of taking oral contraceptives as prescribed?
She should continue taking the contraceptive.
What is the first menstrual flow?
Menarche and may be anovulatory (infertile).
What happens when both breasts are used for breastfeeding?
The infant usually doesn’t empty the second breast. Therefore, the second breast should be used first at the nextfeeding.
Factors that reduce a mother’s milk supply.
Stress,dehydration, andfatigue
How do you break suction of a breast feeding infant?
Insert a finger at the corner of the infant’smouth.
Why shouldn’t cow’s milk be given infants less than 1 years?
Because it has a low linoleic acid content and its protein is difficult for infants to digest.
Care for the breasts after feeding.
Rub emollient cream, or few drops of breast milk(colostrum) on nipples and let them air dry to prevent cracking.
Fluid intake for breastfeeding mothers
Should increase their fluid intake to 2½ to 3 qt (2,500 to 3,000 ml) daily.
What should be done after breastfeeding an infant with cleft lip/ palate?
Rinse the mouth with sterile water.
How is HIV transferred to an infant?
Since the virus has been cultured in breast milk, it can be transmitted during breastfeeding by HIV positive mother.
Define Colostrum
This is the precursor of breast milk and it is the first milk to be secreted after delivery.
How long should an infant breastfeeding session last?
Until infant is satisfied, and it ranges from 5 to 20 minutes