12 Questions
What is the typical increase in red blood cells (RBCs) by term during pregnancy?
20%
How much blood loss is estimated during a vaginal delivery?
300-500mL
Which position should be avoided during neuraxial anesthesia in the 2nd and 3rd trimester due to aortic compression concerns?
Supine position
What percentage of patients may experience aortoiliac artery compression during pregnancy?
15-20%
Which of the following is a common effect of inferior vena cava compression during pregnancy?
Decreased systemic blood pressure
What physiological change in the respiratory system is attributed to increased estrogen, progesterone, and relaxin during pregnancy?
Increased upper airway narrowing
What is the primary effect of increased progesterone on systemic vascular resistance (SVR)?
Vasodilation leading to decreased SVR
Which blood vessel experiences dilation due to increased relaxin effects during pregnancy?
Renal artery
When does cardiac output (CO) decrease to pre-labor levels postpartum?
24 - 48 hours postpartum
What is the main reason for the increased cardiac output during labor?
Increased heart rate and stroke volume
How does a twin gestation impact the cardiovascular changes seen during pregnancy?
Leads to a 20% higher increase in cardiac output
What effect does increased renin activity have on sodium and water retention during pregnancy?
Increased retention of sodium and water
Learn about the impact of increased progesterone and relaxin levels on the cardiovascular system during pregnancy, leading to decreased systemic vascular resistance (SVR) and vasodilation. Understand how alterations in receptor function and vascular smooth muscle contribute to a lower SVR throughout pregnancy.
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