Preterm labor



Preterm labor



Preterm labor


0 / 12 complete

USMLE® Step 1 questions

0 / 3 complete

High Yield Notes

8 pages


Preterm labor

of complete


USMLE® Step 1 style questions USMLE

of complete

A 37-year-old woman, gravida 1 para 0, comes to the office for a routine prenatal appointment at 28 weeks of gestation. The pregnancy has been uneventful, and she has been compliant with prenatal care. During the past week, she has been feeling a severe throbbing headache, with minimal response to acetaminophen. Medical history is unremarkable, and she has no history of migraines. Temperature is 37.0°C (98.6°F), pulse is 95/min, and blood pressure is 150/95 mmHg. Review of medical records at 24 weeks of gestation shows blood pressure of 135/80. Which of the following would prompt further evaluation in this patient?  

External References

First Aid








Premature labor and delivery

cryptorchidism and p. 675

low birth weight with p. 658

murmur in prematurity p. 298

neonatal respiratory distress syndrome and p. 685

Preterm birth

common cause of death p. 277


Preterm birth is defined as the birth of a baby at less than 37 weeks of gestational age. The earlier a baby is born, the greater the risk, variety, and severity of complications to the infant's health, particularly to the respiratory system. The earliest gestational age at which a baby has at least a 50% chance of survival is approximately 24 weeks. Signs of preterm labor include frequent and painful uterine contractions, vaginal bleeding, cramping, and lower back pain.


Copyright © 2023 Elsevier, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

Cookies are used by this site.

USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.