Term Infant With No Chest Rise After Emergency Delivery for Cord Prolapse
At 39+4 weeks, a patient undergoes emergency cesarean delivery for a prolonged fetal bradycardia after spontaneous rupture of membranes and a visualized cord prolapse. Under general anesthesia, a male infant is delivered 12 minutes after the decision. He is limp, apneic, and pale; the heart rate is 40/min by auscultation at 20 seconds. The team provides warmth, dries, and positions the head; positive-pressure ventilation with a T-piece resuscitator at 21% oxygen is started at 30 seconds. At 60 seconds, the heart rate is 50/min and there is no chest rise despite mask repositioning and a two-person technique. The infant has no spontaneous effort. A UVC tray and intubation equipment are open, and the code team is present. Maternal history is notable for a 400-mL blood loss before delivery and general anesthesia. The obstetric team reports the cord was pulsatile at delivery. The infant's color remains pale.
1. At 60 seconds, what are your next actions, and why?
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At 60 seconds, the heart rate is 50/min after 30 seconds of PPV, and there is no chest rise. The first priority is effective ventilation, not immediate compressions alone: the lack of chest rise means the airway is not patent or the mask seal is inadequate. Reposition the head, suction if needed, reapply the mask with a two-person technique, and consider intubation. Because the heart rate remains below 60/min at 60 seconds, start chest compressions with 3:1 compressions-to-ventilations and increase oxygen to 100%. Place a UVC for vascular access. Reassess the heart rate every 60 seconds. The maternal blood loss and pallor also raise the possibility of hypovolemia, so prepare normal saline for a 10 mL/kg bolus if there is no response to ventilation and epinephrine. Check for pneumothorax if chest rise remains poor after intubation.
2. Justify the use of oxygen, the epinephrine dose and route, and volume replacement in this infant.
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Use 21% oxygen for initial PPV in a term infant, but once compressions begin, use 100% oxygen until the heart rate recovers; titrate down afterward. Epinephrine is indicated if the heart rate remains below 60/min despite effective ventilation and compressions. The IV dose is 0.02 mg/kg (0.2 mL/kg of 0.1 mg/mL) via the UVC, repeated every 3–5 minutes. The endotracheal dose is 0.05–0.1 mg/kg, but absorption is unreliable, so it is a bridge until IV access is obtained. For hypovolemia suggested by pallor and maternal hemorrhage, give normal saline 10 mL/kg over 5–10 minutes, then reassess; avoid repeated rapid boluses because they can worsen pulmonary edema. Check glucose and hematocrit after stabilization. Document each dose and the response.
3. After two doses of epinephrine and intubation, the heart rate is 110/min but the infant remains apneic and hypotonic. What do you do, and how do you communicate with the family?
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Once the heart rate is above 100/min, stop compressions but continue ventilation. The infant remains apneic and hypotonic, so provide ongoing PPV and evaluate for hypoxic-ischemic encephalopathy, hypoglycemia, hypocalcemia, and anemia. Obtain a blood gas, glucose, calcium, and hematocrit. If the infant is ≥36 weeks, has a history of acute perinatal depression, and develops moderate-to-severe encephalopathy within 6 hours, discuss therapeutic hypothermia with the transport team. Do not rewarm passively if cooling is being considered. For family communication, use plain language: describe the emergency delivery, the need for breathing support and chest compressions, and the uncertainty about long-term outcome. Avoid predicting prognosis in the first hours. Offer to update them after the first blood gas and neurologic examination, and arrange a team debrief.