Exam (elaborations)
BSNC 5000 – OB questions with correct answers
- Course
- Institution
BSNC 5000 – OB questions with correct answers
[Show more]
Content preview
BSNC 5000 – OB questions with correct answersUteroplacental circulation Correct Answer-- uterine arterial blood supply
shown at right
- both the ovarian and uterine arteries supply the myometrium
- spiral arteries elongate as the endometrium cyclically thickens to
accommodate the possibility of implantation of a blastocyst
Intervillous space Correct Answer-- the space in the placenta in which
maternal blood bathes chorionic villi, allowing the exchange of materials
between the fetal and maternal circulations.
Divided into 3 parts:
- arterial circulation
- circulation in the intervillous space
- venous drainage
Hemodynamics of uteroplacental circulation Correct Answer-Volume of
placental blood flow - 600-700mL/min
Pressure in supplying uterine artery - 80-100 mmHg
Pressure in spiral arteries - 70mmHg
Pressure in draining uterine vein - 10mmHg
, Maternal intravascular volume changes Correct Answer-- plasma
volume increases by up to 1L
- rise in #rbc/blood volume but to lesser extent (placental lactogen
stimulates production of erythropoietin)
- dilutional gap causes physiological anemia
Blood pressure change in normal pregnancy Correct Answer--
progesterone relaxes smooth muscle in the wall of blood vessels
- relaxin increases systemic arterial compliance (vasodilation) to reduce
peripheral resistance
- decreases the effective circulating volume (same volume but larger
space to fill)
- effects of vasodilation:
•non-osmotic release of vasopressin/ADH
•activation of SNS and RAAS increases plasma volume for adequate
organ perfusion
Maternal cardiovascular changes Correct Answer-- increasing volume ->
increase in preload -> increased contractility.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
