Treatment of Oral Candidiasis in Infants

Treatment Options

• The American Academy of Pediatrics recommends nistatina suspension oral (100,000 UI/mL): 1 mL four times a day for 7-14 days, for the treatment of oral candidiasis in infants 1
• Fluconazol oral: 3-6 mg/kg daily for 7 days, is an alternative treatment option for oral candidiasis in infants, with a half-life of 55-90 hours in neonates, allowing for once-daily dosing 2
• Gel oral de miconazol: 15 mg every 8 hours, is another alternative treatment option, with clinical cure rates of 85.1% compared to nistatina gels (42.8-48.5%) 3

Special Considerations

• For premature infants with weight <1000g, prophylaxis with fluconazol (3-6 mg/kg twice a week for 6 weeks) is recommended in nurseries with high rates of invasive candidiasis (>10%) 4
• For breastfeeding-associated oral candidiasis, simultaneous treatment of the mother and infant is recommended, with the mother applying miconazol cream to the nipples/areola after each feeding 1

Precautions and Warnings

• Premature infants should be monitored for potential adverse effects of nistatina, such as intestinal damage and necrotizing enterocolitis 5
• The use of miconazol oral may lead to the development of resistance to triazoles 3

Treatment of Oral Thrush in Infants

Diagnostic Considerations

• Take swabs for bacterial and candidal culture from lesional areas, particularly sloughy or crusted areas, as recommended by the British Journal of Dermatology 6

Special Considerations

• If using fluconazole, be aware of potential drug interactions with other medications, as noted by the European Society of Clinical Microbiology and Infectious Diseases 7

Treatment of Oral Thrush in Infants

Treatment Duration and Endpoint

• The endpoint of treatment should be mycological rather than just clinical cure, as recommended by the British Journal of Dermatology 8
• For persistent cases, evaluate for potential underlying conditions or consider extending the treatment duration, according to Clinical Infectious Diseases 9

Treatment of Persistent Oral Thrush After Failed Nystatin Therapy

Alternative Treatment Options

• Consider a loading dose of 25 mg/kg for severe or invasive disease, though this is typically reserved for systemic infections, as recommended by Clinical Microbiology and Infection 10
• Miconazole oral gel 15 mg every 8 hours is another alternative with clinical cure rates superior to nystatin's, but there are concerns about generating triazole resistance with miconazole, making fluconazole the preferred second-line agent, according to Clinical Microbiology and Infection 10

Treatment and Management of Infant Oral Thrush

Treatment Duration and Endpoint

• The American Academy of Pediatrics recommends treatment duration of 7-14 days, continuing for at least 48 hours after symptoms resolve and cultures confirm eradication of Candida, for infants with uncomplicated oral thrush 11
• Systemic antifungal therapy is reserved for premature infants with disseminated disease, immunocompromised children, or those at risk for invasive candidiasis, as recommended by the Journal of Microbiology, Immunology and Infection 11

Treatment of Oral Thrush in Neonates

Special Populations Requiring Systemic Therapy

• Premature or low birth weight neonates with disseminated cutaneous candidiasis require systemic antifungal therapy, not just topical treatment, according to the Clinical Infectious Diseases guidelines 12
• Amphotericin B deoxycholate 0.5-1 mg/kg/day for a total dose of 10-25 mg/kg is used for disseminated disease, as recommended by the Clinical Infectious Diseases guidelines 12
• For invasive neonatal candidiasis, amphotericin B deoxycholate 1 mg/kg daily or fluconazole 12 mg/kg daily for at least 3 weeks is recommended by the Clinical Infectious Diseases guidelines 13
• All neonates with suspected invasive candidiasis should undergo lumbar puncture and dilated retinal examination, as recommended by the Clinical Infectious Diseases guidelines 13

Prophylaxis in High-Risk Settings

• In NICUs with invasive candidiasis rates >10%, fluconazole prophylaxis 3-6 mg/kg twice weekly for 6 weeks is recommended for infants <1000g by the Clinical Infectious Diseases guidelines 14
• Oral nystatin 100,000 units three times daily for 6 weeks is an alternative when fluconazole is unavailable or resistance is a concern, according to the Clinical Infectious Diseases guidelines 14

Antifungal Prophylaxis and Resistance Considerations in High‑Risk Pediatric Patients

Miconazole Use and Triazole Resistance

• Emerging evidence indicates that the use of miconazole oral gel can promote the development of triazole‑class resistance, potentially limiting the effectiveness of subsequent fluconazole therapy in pediatric patients with oral candidiasis. 15, 16

Fluconazole Prophylaxis for Extremely Low Birth‑Weight Infants

• In neonatal intensive care units where invasive candidiasis rates exceed 10 %, prophylactic fluconazole administered at 3–6 mg/kg twice weekly for a duration of six weeks is recommended for infants with birth weight < 1000 g. This regimen aims to prevent invasive candidiasis in this high‑risk population. 15, 16

Nystatin Prophylaxis as an Alternative Strategy

• When fluconazole is unavailable or concerns about triazole resistance exist, oral nystatin prophylaxis (100 000 units three times daily for six weeks) serves as an alternative preventive measure for extremely low birth‑weight infants. 15, 16

Outcomes of Nystatin Prophylaxis

• Prophylactic nystatin has been shown to lower the incidence of invasive candidiasis in the target neonatal population, although it does not confer a mortality benefit. Additionally, its use has been associated with a potential increase in the risk of necrotizing enterocolitis. 15, 16