SS_OB 1.7

SS_OB 1.7 Describe the changes in the anatomy of the maternal vertebral column, the spinal cord and meninges relevant to the performance of a central neuraxial block including epidural, spinal and combined spinal-epidural, with appropriate surface markings


TRUE/FALSE  The risk of inadvertent venous puncture, with epidural placement in pregnant women, is the same as in the non-pregnant population

TRUE/FALSE  The line joining the iliac crests (Tuffier’s line) may transverse the body of L5 in late pregnancy

TRUE/FALSE  Epidural space pressure may be positive during labour

TRUE/FALSE  Epidural veins are engorged in late pregnancy

TRUE/FALSE   The ligamentum flavum softens during pregancy

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