Obstetrics and the primary exam

SS_OB 1.1

Describe the physiological changes and their implications for anaesthesia that occur during pregnancy, labour and delivery, in particular the respiratory, cardiovascular, haematological and gastrointestinal changes.


Normal physiological changes begin in the first trimester of pregnancy. TRUE/FALSE

The largest increase in cardiac output in a pregnant woman occurs immediately after delivery. TRUE/FALSE

The closing capacity in normal pregnancy does not change. TRUE/FALSE

Gastrin is secreted by the placenta TRUE/FALSE

Progesterone from the gestational sac may cause changes in the renin-angiotensin-aldosterone system in the first trimester, promoting sodium absorption and water retention. TRUE/FALSE

Hats off to those of you who sit this exam pregnant!




SS_OB 1.2

Keep the dream alive! Read “Primary LO of the Day”.

Outline the reference ranges for physiological and biochemical variables in pregnancy

Uterine blood flow is approximately 20% of maternal cardiac output at term gestation TRUE/FALSE

Maternal hyperventilation facilitates removal of CO2 from the foetus TRUE/FALSE

Antithrombin III and factor XIII are decreased in pregnancy TRUE/FALSE

Haemoglobin concentration and total red cell mass are decreased 15-20% in pregnancy TRUE/FALSE

The word “glidescope” is pronounced the same as “kaleidoscope” TRUE/FALSE