Maternal-Fetal Medicine Flashcards
HR increases or decreases during pregnancy?
Increases by 10-15 bpm
Blood volume increases rapidly during which trimester? How much does it increase by over entire pregnancy?
2nd trimester. Increases by 30-50%
Increase in blood volume leads to increased preload and:
protects mother from impaired venous return, meets demand of vascular uterus, and protects mother against large blood loss during delivery
Blood pressure decreases and reaches its lowest in which trimester? What happens to pulse pressure
2nd trimester; widened pulse pressure due to diastolic BP decreases more than systolic BP
Cardiac output increases by what %? Majority of output goes where?
30-50% (same as volume); majority goes to kidneys and uterus
Respiratory changes in mother include:
minimal change in RR, significant increase in tidal volume, and minute ventilation with increasing GA, decreased residual volume
GFR and renal blood flow are increased by what %
50
____ renal bicarbonate threshold; ______ protein filtration
Decreased, Increased
ADH, renin, angiotensin II and aldosterone secretion are increased or decreased during pregnancy?
Increased
RBC’s during pregnancy are increased by ____% due to increased demand for what?
30; iron
Increased plasma volume greater than increases in number of RBCs leads to:
dilutional anemia
Despite increased number of WBCs, leukocyte function during pregnancy is:
decreased
Changes in platelets include a minimal change in platelet count but an increase in:
width and volume ( prob due to younger larger platetlets following increased platelet consumption
Hbg and Hct ____ slightly during pregnancy due to increased blood volume despite increased erythropoiesis.
decrease
Coagulation factors are increased during pregnancy leading to a greater risk of what?
thromboembolic disease
