Emergency Drug Use in Neonatal Resuscitation: Epinephrine, Doxapram, and Beyond

Pharmacologic intervention in neonatal resuscitation is generally considered a secondary measure, used when primary interventions such as ventilation and chest compressions do not achieve the desired response. The RECOVER guidelines emphasize that effective ventilation remains the cornerstone of neonatal resuscitation, and drug therapy should not delay or replace these initial steps^1,2. 

When Are Drugs Indicated? 

Drug administration may be considered in neonates that fail to respond to appropriate ventilation and, when indicated, cardiopulmonary resuscitation (CPR). Persistent bradycardia or absence of cardiac activity despite these measures may prompt consideration of pharmacologic support. 

It is important to recognize that most neonatal compromise is related to hypoxemia. Therefore, ensuring adequate oxygenation through ventilation should remain the priority before initiating drug therapy¹. 

Epinephrine: Indications and Use 

Epinephrine is one of the primary drugs considered during advanced neonatal resuscitation. It may be used in cases of severe bradycardia or cardiac arrest that do not respond to ventilation and chest compressions. 

The mechanism of action involves stimulation of adrenergic receptors, leading to increased heart rate and improved cardiac output. However, its effectiveness is closely linked to adequate oxygenation and circulation. 

The guidelines suggest that epinephrine should be administered only after ensuring that ventilation and compressions are being performed effectively^1,2. 

Doxapram: Current Perspective 

Doxapram has historically been used as a respiratory stimulant in neonatal resuscitation. However, its role remains controversial. 

The RECOVER guidelines indicate that reliance on doxapram as a primary intervention is not recommended. This is because stimulation of respiration without addressing underlying hypoxemia may not result in effective oxygenation¹. 

Ventilation remains the preferred approach for establishing adequate respiratory function. 

Other Pharmacologic Considerations 

Additional drugs may be considered in specific clinical scenarios, but their use should be guided by careful assessment and clinical judgment. Routine or indiscriminate use of pharmacologic agents is not recommended. 

Integration with Resuscitation Protocols¹ 

Drug therapy should be integrated into a structured resuscitation approach. Primary interventions, airway management, ventilation, and thermoregulation, should always be prioritized. 

Pharmacologic agents may be introduced when these measures are insufficient to restore adequate physiological function. 

Monitoring Response to Drug Therapy¹ 

Following drug administration, continuous monitoring is essential. Parameters such as heart rate, respiratory effort, and overall responsiveness should be evaluated to assess effectiveness. 

Lack of improvement should prompt reassessment of ventilation, airway patency, and overall resuscitation technique. 

Clinical Preparedness¹ 

Veterinary teams should be familiar with the indications, mechanisms, and limitations of drugs used in neonatal resuscitation. Having appropriate medications readily available and understanding when to use them may support timely intervention. 

Conclusion 

Emergency drug use in neonatal resuscitation should be approached with caution and clinical judgment. While agents such as epinephrine may be beneficial in selected cases, they should not replace primary interventions. By prioritizing ventilation and integrating pharmacologic support appropriately, veterinarians may enhance neonatal outcomes. 

References:  

1. Boller M, Burkitt‐Creedon JM, Fletcher DJ, Byers CG, Davidson AP, Farrell KS, Bassu G, Fausak ED, Grundy SA, Lopate C, Veronesi MC. RECOVER Guidelines: Newborn Resuscitation in Dogs and Cats. Clinical Guidelines. Journal of Veterinary Emergency and Critical Care. 2025 Aug;35:S60-85. https://onlinelibrary.wiley.com/doi/pdf/10.1111/vec.70013 

2. Pike H, Kolstad V, Eilevstjønn J, Davis PG, Ersdal HL, Rettedal S. Newborn resuscitation timelines: accurately capturing treatment in the delivery room. Resuscitation. 2024 Apr 1;197:110156. https://www.sciencedirect.com/science/article/pii/S0300957224000492