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RNC-OB Exam: Obstetric Complications
Questions and Correct Answers
5 P's of Labor Requirements
Ans✅✅: - Power
- Passenger - size, presentation, position
- Pathway - pelvic anatomy
- Psych - mental outlook
- Positioning
How many cm is an adequate pelvis?
Ans✅✅: 11 cm
Prolonged Labor Length
Ans✅✅: > 20 hrs
Precipitous Labor Length
Ans✅✅: < 3 hrs
Nulliparous Prolonged/Protracted Latent Phase
Ans✅✅: 20 hrs
Multiparous Prolonged/Protracted Latent Phase
Ans✅✅: 14 hrs
Nulliparous Prolonged/Protracted Active Phase
Ans✅✅: 1.2 cm/hr
Pretest - Stuvia US
,2
Multiparous Prolonged/Protracted Active Phase
Ans✅✅: 1.5 cm/hr
Active Phase Arrest
Ans✅✅: No cervical change in 4 hrs or > despite adequate ctx for 6
hrs w/ pitocin
Protracted Descent
Ans✅✅: Caused by excessive fetal size/maternal pelvis relationship or
poor pushing efforts
Arrested Descent
Ans✅✅: Presenting part does not advance for more than 1 hr for both
primes and multips
Arrested Descent Causes
Ans✅✅: Poor maternal effort, excessive fetal size, maternal pelvis,
and analgesics
Precipitous Delivery Causes
Ans✅✅: - Lack of soft tissue resistance
- Intense ctx
- < 2 min apart consistently
What should a nurse watch for with precipitous delivery?
Ans✅✅: - Abruption
- Hemorrhage
- Tissue lacs
- Fetal acidemia
- Mec staining.aspiration
- Low apgars
- Uterine atony
Pretest - Stuvia US
, 3
Anthropoid Pelvis
Ans✅✅: Oval shaped inlet w/ large anterior-posterior diameter and
smaller transverse diameter
Platypelloid Pelvis
Ans✅✅: Narrow anterior-posterior diameter (kidney shaped inlet)
Android Pelvis (Male)
Ans✅✅: Triangular or heart shaped inlet, narrow from the front,
prominent ischial spines (high risk of prolonged labor and instrumental
deliveries)
Complete Breech
Ans✅✅: Legs wrapped around body
Incomplete Breech
Ans✅✅: Legs extended at hip, foot or knee presents
Frank Breech
Ans✅✅: Feet close to head/toward shoulders
Footling Breech
Ans✅✅: One or both legs presenting before butt
Vaginal Breech Delivery Points
Ans✅✅: 1) Cord is compressed, quickly deliver head
2) Head entrapment can occur (esp in PTD)
3) Nuchal arm can occur
What med to give for cervical entrapment?
Ans✅✅: Nitroglycerin
Pretest - Stuvia US
RNC-OB Exam: Obstetric Complications
Questions and Correct Answers
5 P's of Labor Requirements
Ans✅✅: - Power
- Passenger - size, presentation, position
- Pathway - pelvic anatomy
- Psych - mental outlook
- Positioning
How many cm is an adequate pelvis?
Ans✅✅: 11 cm
Prolonged Labor Length
Ans✅✅: > 20 hrs
Precipitous Labor Length
Ans✅✅: < 3 hrs
Nulliparous Prolonged/Protracted Latent Phase
Ans✅✅: 20 hrs
Multiparous Prolonged/Protracted Latent Phase
Ans✅✅: 14 hrs
Nulliparous Prolonged/Protracted Active Phase
Ans✅✅: 1.2 cm/hr
Pretest - Stuvia US
,2
Multiparous Prolonged/Protracted Active Phase
Ans✅✅: 1.5 cm/hr
Active Phase Arrest
Ans✅✅: No cervical change in 4 hrs or > despite adequate ctx for 6
hrs w/ pitocin
Protracted Descent
Ans✅✅: Caused by excessive fetal size/maternal pelvis relationship or
poor pushing efforts
Arrested Descent
Ans✅✅: Presenting part does not advance for more than 1 hr for both
primes and multips
Arrested Descent Causes
Ans✅✅: Poor maternal effort, excessive fetal size, maternal pelvis,
and analgesics
Precipitous Delivery Causes
Ans✅✅: - Lack of soft tissue resistance
- Intense ctx
- < 2 min apart consistently
What should a nurse watch for with precipitous delivery?
Ans✅✅: - Abruption
- Hemorrhage
- Tissue lacs
- Fetal acidemia
- Mec staining.aspiration
- Low apgars
- Uterine atony
Pretest - Stuvia US
, 3
Anthropoid Pelvis
Ans✅✅: Oval shaped inlet w/ large anterior-posterior diameter and
smaller transverse diameter
Platypelloid Pelvis
Ans✅✅: Narrow anterior-posterior diameter (kidney shaped inlet)
Android Pelvis (Male)
Ans✅✅: Triangular or heart shaped inlet, narrow from the front,
prominent ischial spines (high risk of prolonged labor and instrumental
deliveries)
Complete Breech
Ans✅✅: Legs wrapped around body
Incomplete Breech
Ans✅✅: Legs extended at hip, foot or knee presents
Frank Breech
Ans✅✅: Feet close to head/toward shoulders
Footling Breech
Ans✅✅: One or both legs presenting before butt
Vaginal Breech Delivery Points
Ans✅✅: 1) Cord is compressed, quickly deliver head
2) Head entrapment can occur (esp in PTD)
3) Nuchal arm can occur
What med to give for cervical entrapment?
Ans✅✅: Nitroglycerin
Pretest - Stuvia US
