BEFM Practice Questions And Answers
Graded A+
Uterine blood flow during pregnancy increases from 60 ml/min to:
a. 80-100 ml/min
b. 100-500 ml/min
c. 500-1000 ml/min - c. 500-1000 ml/min
Oxygen, CO2, and narcotics are transferred from the mother to the fetus via the placenta through:
a. active transport
b. hydrostatic pressure
c. passive or simple diffusion - c. passive or simple diffusion
active transport is for nor epi, dopamine, and amino acids
oxygen and CO2 are passive diffusion, narcotics are simple diffusion
Intervillous space perfusion is dependent on:
a. adequate uterine blood flow
b. maternal oxygenation
c. number of fetal villi - a. adequate uterine blood flow
Maternal-fetal exchange is best promoted by which maternal position:
a. left lateral
b. either right or left lateral
c. right lateral - b. either right or left lateral
,Variable decelerations are mediated primarily by:
a. chemoreceptors
b. baroreceptors
c. vagal response - b. baroreceptors
Late decelerations are mediated primarily by:
a. chemoreceptors
b. vagal response
c. baroreceptors - a. chemoreceptors
Sympathetic branch of the autonomic nervous system influences the FHR to:
a. decrease
b. increase
c. remain unchanged - b. increase
Parasympathetic branch of the autonomic nervous system influences the FHR to:
a. remain unchanged
b. increase
c. decrease - c. decrease
The average difference in baseline FHR between 30 and 40 weeks gestation is:
a. 20 bpm
b. 10 bpm
c. 30 bpm - b. 10 bpm
The following umbilical artery cord blood is obtained:
pH= 7.22
PCO2= 50 mmHg
HCO3= 24 mEq/L
, Base excess= -3 mEq/L
These findings are most consistent with fetal
a. metabolic acidemia
b. normal acid-base status
c. respiratory acidemia - b. normal acid-base status
Fetal respiratory acidemia is indicated by an umbilical artery cord blood gas pH of 7.04 and pCO2 of:
a. 22
b. 58
c. 84 - c. 84
The following umbilical artery cord blood is obtained:
pH= 6.98
PCO2= 49 mmHg
HCO3= 15mEq/L
Base excess= -16 mEq/L
These findings are most consistent with fetal
a. metabolic acidemia
b. normal acid-base status
c. respiratory acidemia - a. metabolic acidemia
The following umbilical artery cord blood is obtained:
pH= 6.99
PCO2= 79
HCO3= 18 mEq/L
Base excess= -15 mEq/L
Graded A+
Uterine blood flow during pregnancy increases from 60 ml/min to:
a. 80-100 ml/min
b. 100-500 ml/min
c. 500-1000 ml/min - c. 500-1000 ml/min
Oxygen, CO2, and narcotics are transferred from the mother to the fetus via the placenta through:
a. active transport
b. hydrostatic pressure
c. passive or simple diffusion - c. passive or simple diffusion
active transport is for nor epi, dopamine, and amino acids
oxygen and CO2 are passive diffusion, narcotics are simple diffusion
Intervillous space perfusion is dependent on:
a. adequate uterine blood flow
b. maternal oxygenation
c. number of fetal villi - a. adequate uterine blood flow
Maternal-fetal exchange is best promoted by which maternal position:
a. left lateral
b. either right or left lateral
c. right lateral - b. either right or left lateral
,Variable decelerations are mediated primarily by:
a. chemoreceptors
b. baroreceptors
c. vagal response - b. baroreceptors
Late decelerations are mediated primarily by:
a. chemoreceptors
b. vagal response
c. baroreceptors - a. chemoreceptors
Sympathetic branch of the autonomic nervous system influences the FHR to:
a. decrease
b. increase
c. remain unchanged - b. increase
Parasympathetic branch of the autonomic nervous system influences the FHR to:
a. remain unchanged
b. increase
c. decrease - c. decrease
The average difference in baseline FHR between 30 and 40 weeks gestation is:
a. 20 bpm
b. 10 bpm
c. 30 bpm - b. 10 bpm
The following umbilical artery cord blood is obtained:
pH= 7.22
PCO2= 50 mmHg
HCO3= 24 mEq/L
, Base excess= -3 mEq/L
These findings are most consistent with fetal
a. metabolic acidemia
b. normal acid-base status
c. respiratory acidemia - b. normal acid-base status
Fetal respiratory acidemia is indicated by an umbilical artery cord blood gas pH of 7.04 and pCO2 of:
a. 22
b. 58
c. 84 - c. 84
The following umbilical artery cord blood is obtained:
pH= 6.98
PCO2= 49 mmHg
HCO3= 15mEq/L
Base excess= -16 mEq/L
These findings are most consistent with fetal
a. metabolic acidemia
b. normal acid-base status
c. respiratory acidemia - a. metabolic acidemia
The following umbilical artery cord blood is obtained:
pH= 6.99
PCO2= 79
HCO3= 18 mEq/L
Base excess= -15 mEq/L
