Neonatal iatrogenic calcinosis cutis caused by calcium gluconate extravasation

Background: Calcium gluconate is widely used to treat neonatal hypocalcemia, severe hyperkalemia, and convulsions. However, extravasation of calcium gluconate can lead to iatrogenic calcinosis, causing symptoms such as local redness and swelling, cutaneous plaque, soft tissue calcification, and cutaneous tissue necrosis. Therefore, this study retrospectively analyzed the conservative treatment results of neonatal iatrogenic calcinosis. Methods: Data of neonates diagnosed with iatrogenic calcinosis cutis caused by calcium gluconate exudation between December 2012 and June 2021 were analyzed retrospectively. The clinical data included medical history, physical examination, laboratory findings, and radiographs. All the patients were conservatively treated, and the curative effect and prognosis were followed up by evaluating radiographs and limb function. Patients with complications, such as recurrence or limb dysfunction, were further followed up. Results: Overall, 16 neonates (sex: 10 male and 6 female infants; age: 17.5 & PLUSMN; 7.8 days) were included. Iatrogenic calcinosis cutis was located around the left wrist, right wrist, left ankle, and right ankle in four, one, six, and five patients, respectively. Calcification healed within 1-3 months (mean: 1.6 & PLUSMN; 0.6 months). After a follow-up of 0.5-8.5 years (mean: 3.5 & PLUSMN; 2.8 years), the appearance, joint function, local growth, and development of the lesion of the neonates with iatrogenic calcinosis cutis were consistent with those of the healthy ones. Conclusion: For neonatal iatrogenic calcinosis cutis without cutaneous and subcutaneous tissue necrosis, symptomatic support treatment is effective and does not affect the limbs' appearance and function. Level of evidence: IV.