Diaphragmatic paralysis after phrenic nerve injury in newborns.
BACKGROUND
Phrenic nerve injury (PNI) from birth trauma is a recognized phenomenon, generally occurring with ipsilateral brachial plexus palsy (BPP). In severe cases, PNI results in diaphragm paresis (DP) and respiratory insufficiency. Surgical diaphragmatic plication (SDP) is a potential management strategy for patients with PNI and DP, but timing and outcomes associated with SDP have not been rigorously studied.


METHODS
Records from 49 tertiary United States pediatric hospitals in the Pediatric Health Information System from 2004 to 2018 were analyzed. The study cohort included patients diagnosed with BPP from birth trauma who were documented to have PNI or DP. Patients who underwent congenital cardiac operations were excluded.


RESULTS
A total of 5832 patients were identified with BPP from birth trauma during the study period, 122 (2%) of whom were found to have concomitant DP. Of those, 65 (53%) were male, 39 (32%) were infants of diabetic mothers, 80 (65%) required mechanical ventilation, and 33 (27%) underwent SDP. SDP was performed at a median (range) age of 36 (7-95) days. Median (range) total and postoperative hospital lengths of stay (LOS) were 34 (6-180) and 15 (4-132) days, respectively. There was also an observed increase in post-operative LOS with increase in age at operation.


CONCLUSION
Neonatal DP is rare and is managed with SDP in a minority of instances. Age at repair affects total and postoperative length of stay, proxies for resource utilization and morbidity. Repair prior to 45 days of life appears to result in a shorter postoperative hospital stay. This analysis will help guide surgeons with respect to indications and operative timing for infant DP.


TYPE OF STUDY
Retrospective Comparative Study.


LEVEL OF EVIDENCE
Level III.
['Rizeq|Yazan K|YK|', 'Many|Benjamin T|BT|', 'Vacek|Jonathan C|JC|', 'Reiter|Audra J|AJ|', 'Raval|Mehul V|MV|', 'Abdullah|Fizan|F|', 'Goldstein|Seth D|SD|']
D003964:Diaphragm D005260:Female D006801:Humans D007231:Infant, Newborn D007902:Length of Stay D008297:Male D010246:Paralysis, Obstetric D010791:Phrenic Nerve D012121:Respiration, Artificial D012133:Respiratory Paralysis D012189:Retrospective Studies
Phrenic nerve injury Diaphragm paralysis Diaphragm plication