S1_L3: Parturition and Labor Flashcards
Relaxin is found in the ___ and placenta in pregnant women. It softens the birth canal, allows connective tissue remodeling, for mammary growth and differentiation and inhibits uterine contraction.
corpus luteum
Relaxin allows systemic (1)___ and (2)___ blood pressure during pregnancy. It also relaxes ligaments to allow bony structures to expand.
- vasodilation
- decreases
This allows breast tissue development and milk production, so the mother is able to breastfeed
Prolactin hormone
Maternal changes in the cardiovascular system
- Increase in vascular resistance
- Decrease in cardiac output
- Increase heart rate
A. True
B. False
- B
- B
- A
Maternal changes in the cardiovascular system
- Increase in stroke volume
- Decreased ventricular wall mass, myocardial contractility, and cardiac compliance
A. True
B. False
- A
- B
Maternal changes in the hematologic system
- Increase in blood flow to the uterus causing optimized O2 transfer to fetus
- Increase demand for iron throughout pregnancy
- Decrease in RBC mass
A. True
B. False
- A
- A
- B
Maternal changes in the respiratory system
- Increase in Functional residual capacity (FRC)
- Increase in inspiratory reserve volume (IRV)
- Increase in Expiratory reserve volume (ERV)
A. True
B. False
- B
- A
- B
Maternal changes in the respiratory system
- No change in vital capacity (VC)
- Increase in tidal volume
- Respiratory rate remains unchanged
A. True
B. False
- A
- A
- A
Maternal changes in the renal system
- Fluid retention leads to physiologic hydronephrosis
- Decrease in the serum concentration of creatinine, urea, and uric acid
- Progesterone and relaxin acts on smooth muscles causing constriction of the urinary collecting system
A. True
B. False
- A
- A
- B, causes dilation
Maternal changes in the gastrointestinal tract
- Delayed gastric emptying
- Decreased small bowel transit time
- Compression from a gravid (pregnant) uterus predisposes to GERD
A. True
B. False
- A
- B
- A
Longest phase of parturition that happens in the 1st 32 weeks of pregnancy
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
A. Phase 1 (Uterine Quiescence)
Cervix is rigid, firm, and unyielding. The uterus changes in size and vascularity to accommodate pregnancy and prepare for uterine contraction.
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
A. Phase 1 (Uterine Quiescence)
Cervical ripening; the cervix softens and is more readily dilatable; uterine awakening & contraction
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
B. Phase 2 (Preparation for labor; Activation)
The uterus goes back to its original size and is fully contracted
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
D. Phase 4 (Involution)
Mother starts breastfeeding; “Parturient Recovery”
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
D. Phase 4 (Involution)
Uterus is already contracting
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
C. Phase 3 (Process of labor; Stimulation)
Cervix is slowly dilating
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
C. Phase 3 (Process of labor; Stimulation)
Uterus is unresponsive to any contraction; Uterine smooth muscle tranquility with maintenance of cervical structural integrity
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
A. Phase 1 (Uterine Quiescence)
Collagen fibril diameter of the cervix is increased and there is spacing between fibrils leading to loss of tissue integrity and increased tissue compliance (more loose and elastic)
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
B. Phase 2 (Preparation for labor)
Myometrial changes:
1. fundus produces effective contractions that drive fetus through cervix and birth canal
2. formation of the lower uterine segment
A. Phase 1 (Uterine Quiescence)
B. Phase 2 (Preparation for labor)
C. Phase 3 (Process of labor)
D. Phase 4 (Involution)
B. Phase 2 (Preparation for labor)
Starts when the effaced (thinned) cervix is 4 cm dilated to full cervical dilation
A. Stage 1 (Latent)
B. Stage 1 (Active)
C. Stage 1 (Transition)
D. Stage 2 (Fetal delivery)
E. Stage 3 (Placental delivery)
F. Stage 4 (Parturient recovery)
B. Stage 1 (Active)
Expulsion of mucus plug: “Bloody Show”
A. Stage 1 (Latent)
B. Stage 1 (Active)
C. Stage 1 (Transition)
D. Stage 2 (Fetal delivery)
E. Stage 3 (Placental delivery)
F. Stage 4 (Parturient recovery)
B. Stage 1 (Active)
Period from just after the fetus is expelled until just after the placenta is expelled
A. Stage 1 (Latent)
B. Stage 1 (Active)
C. Stage 1 (Transition)
D. Stage 2 (Fetal delivery)
E. Stage 3 (Placental delivery)
F. Stage 4 (Parturient recovery)
E. Stage 3 (Placental delivery)
0 – 4 cm cervical dilation, longest time in labor and least intense phase
A. Stage 1 (Latent)
B. Stage 1 (Active)
C. Stage 1 (Transition)
D. Stage 2 (Fetal delivery)
E. Stage 3 (Placental delivery)
F. Stage 4 (Parturient recovery)
A. Stage 1 (Latent)