Related Experiment Video
Updated: Sep 30, 2026

Assessment of Maternal Vascular Remodeling During Pregnancy in the Mouse Uterus
Published on: December 5, 2015
How does maternal age affect pregnancy planning in Puerto Rico?
Alberto de la Vega1, Maribelle Verdiales
1Department of Obstetrics and Gynecology, Medical Sciences Campus, University of Puerto Rico, PO Box 365067, San Juan, Puerto Rico 00936-5067. delavega@coqui.net
Family planning is essential to most prenatal care programs. It is generally believed that maternal age influences the planning of pregnancy with younger patients having higher incidences of unplanned pregnancies. To test this hypothesis we evaluated 470 consecutive cases of pregnant patients regarding pregnancy planning in their current pregnancy. A total of 170 (36.1%) were planned. The incidence of planned pregnancies was evaluated among three age groups and results were as follows: less than 20 years old, 18/60 (30.0%), patients 20 to 29 years old, 105/270 (37%) and more than 29 years old, 47/140 (33.6%). These differences were not statistically significant. Surprisingly, no differences among age groups regarding pregnancy planning were identified in this study.
Family planning is essential to most prenatal care programs. It is generally believed that maternal age influences the planning of pregnancy with younger patients having higher incidences of unplanned pregnancies. To test this hypothesis we evaluated 470 consecutive cases of pregnant patients regarding pregnancy planning in their current pregnancy. A total of 170 (36.1%) were planned. The incidence of planned pregnancies was evaluated among three age groups and results were as follows: less than 20 years old, 18/60 (30.0%), patients 20 to 29 years old, 105/270 (37%) and more than 29 years old, 47/140 (33.6%). These differences were not statistically significant. Surprisingly, no differences among age groups regarding pregnancy planning were identified in this study.
Related Concept Videos
Meiosis vs. Mitosis
Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...
Oogenesis
Mitral Valve Prolapse III: Nursing Management
Nondisjunction
Meiosis I
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
Menopause
