Fetal Bradycardia
Abnormally slow fetal heart rate, typically below 110 beats per minute, often indicating fetal compromise requiring urgent intervention.
Full Definition
Fetal bradycardia is defined as a fetal heart rate below 110 beats per minute for more than 10 minutes. It represents a serious sign of fetal compromise that may result from various causes including maternal hypotension, uterine hyperstimulation, cord compression, placental abruption, or maternal hypoxemia. In the context of obstetric anesthesia, fetal bradycardia can occur following maternal hypotension after neuraxial blockade, local anesthetic systemic toxicity, or as a complication of certain regional anesthetic techniques. Prompt recognition and treatment are essential to prevent fetal asphyxia and permanent neurological injury.
Usage
Usage note: Specify fetal versus maternal bradycardia in documentation; often requires immediate anesthetic intervention to restore uteroplacental perfusion.
In Context
- "Persistent fetal bradycardia following spinal anesthesia required emergency cesarean delivery." — Emergency obstetric procedure note
- "Maternal hypotension was promptly treated with vasopressors to resolve fetal bradycardia." — Intraoperative management report