Paeds Flashcards
What factors might contribute to fertility issues?
Age Smoking BMI Exercise Drugs Folate Alcohol.
Beyond what age is IVF least effective?
Over 40.
What weeks are in the first, second and third trimester of pregnancy?
0-12 weeks
13-28 weeks
29-40 weeks.
After 36 weeks when does the baby move down into the pelvis?
After 36 weeks.s
What are the different types of changes that occur to a women during pregnancy?
Physical Hormonal Haematological Cardiovascular Coagulation.
Why is a woman’s circulation larger during pregnancy?
Incase of blood loss during delivery/
What are the hormonal changes in pregnancy and what do these hormones d?
Increased oestrogen and progesteron. These act on the kidney to increase renin secretion. They increase salt and water retention and plasma volume (plasma volume by 45%)
Lower oesophageal sphincter relaxes (with increased abdominal pressure gives increased GORD)
Hormonal changes increase reduce insulin sensitivity.
What are the haematological changes during pregnancy?
Increased production of rc, wc, platelets
20% increase in red blood cell ass
Increased platelet consumption makes platelets normal to low
Increased wc makes diagnosing infections difficult.
What are the vascular changes during pregnancy?
Relaxation of smooth vascular muscle
- reduced peripheral resistance
- reduced systolic and diastolic blood pressure
- compensatory increase in heart rate by 25%
Vascular compression by the uterus
- vena cava and aorta
- difficulty with venous return when supine
Positioning of vessels of vena cava and aorta behind uterus- pressure of baby can cause significant vascular compression.
What happens to the coagulation system during pregnancy?
Increased fibrinolysis
Clotting factor production increases
Increased system sensitivity with increased DVT risk.
What can you not eat during pregnancy?
Raw/slightly cooked meat and raw fish (danger of infection with toxoplasmosis)
Raw eggs (salmonella)
Non-pasteurised milk and milk cheese (listeria)
Spicy/grilled and fried food (dyspesia)
Marlin/tuna and shark (mercury toxicity)
Internal organs of an animal is not advised during the first three months of pregnancy.
When does development of the embryo start?
4 weeks.
What happens during week 6 of pregnancy?
Start of embryonic development and growth.
When does the embryo stages stop?
10 weeks.
When the the baby known as the foetus (during what weeks)?
10-14 weeks.
What trimester is miscarriage rate highest in?
First trimester.
During what trimester may movement be felt and hair/toenails and eyelids start to form?
During the second trimester.
During what weeks do brain development and body fat increase occur?
20-26 weeks.
What happens during week 27 of pregnancy?
Growth and nervous system maturation.
Describe the linkage of blood vessels between mother and baby.
Interlinking blood vessels so maternal and fetal blood vessels don’t mix- close together so nutrients can diffuse, toxins can diffuse here too- like HIV will be caught at time of birth- Caesarean less risky for these individuals.
Why is screening completed during weeks 18-20?
To confirm pregnancy dates
To determine the number of foetuses and examine the placental structures
To assist in prenatal tests such as amniocentesis
To examine the foetal anatomy for presence of abnormalities
To check the amount of amniotic fluid
TO examine blood flow patterns
To observe foetal behaviour and activity
To examine the placenta
To measure the length of the cervix
To monitor foetal growth.