Chapter 23: Prenatal Period and Risk Conditions

Prenatal Period and Risk Conditions begins with foundational concepts including gestational age calculation using Nägele's rule and the GTPAL classification system for documenting pregnancy history and outcomes. The chapter details the characteristic signs of pregnancy across three categories—presumptive signs such as amenorrhea and nausea, probable signs including positive urine tests and fundal height changes, and positive signs confirming fetal presence through ultrasound and fetal heart tones. Maternal physiological adaptations are explored systematically across all body systems, encompassing cardiovascular changes like increased plasma volume and heart rate, respiratory adjustments affecting oxygen delivery, renal function modifications, gastrointestinal alterations, endocrine shifts, reproductive system changes, musculoskeletal adaptations, and integumentary changes. Psychological maternal adaptations progress through bonding stages and emotional adjustment phases throughout pregnancy. The chapter addresses common pregnancy discomforts including nausea, fatigue, edema, and musculoskeletal pain, with evidence-based nursing interventions for each. Risk factor assessment encompasses maternal age extremes, adolescent considerations, nutritional inadequacies, substance use during pregnancy, infectious exposures including TORCH pathogens and sexually transmitted infections, and maternal chronic conditions such as diabetes, hypertension, and cardiac disease. Comprehensive diagnostic testing modalities including ultrasonography, amniocentesis, chorionic villus sampling, nonstress testing, contraction stress testing, and biochemical markers are explained with their indications and interpretations. High-risk pregnancy conditions including hyperemesis gravidarum, gestational diabetes mellitus, preeclampsia, eclampsia, disseminated intravascular coagulation, and intrauterine fetal demise are examined with appropriate nursing priorities and interventions. The chapter concludes with guidance on pregnancy loss, infectious disease management, and nutritional counseling throughout pregnancy and lactation.