Adjunctive use of saturated solution of potassium iodide (SSKI) with liposomal amphotericin B (L-AMB) in mucormycosis achieves favorable response, shortened dose and duration of amphotericin: A retrospective study from a COVID-19 tertiary care center

Am J Otolaryngol. 2022 May-Jun;43(3):103465. doi: 10.1016/j.amjoto.2022.103465. Epub 2022 Apr 8.

Abstract

Purpose: Second wave of COVID-19 pandemic was associated with an unprecedented rise in cases of mucormycosis, treatment of which has been challenging owing to the availability and side effects associated with amphotericin.

Methods: All patients presenting with rhino-orbital cerebral mucormycosis (ROCM) following COVID-19 infection between April 2021 to June 2021 were included in this retrospective interventional study. Primary objective was to assess the clinical response with combination of intravenous liposomal amphotericin B (4-5 mg/kg/day) and saturated solution of potassium iodide (SSKI) given orally along with surgical debridement.

Results: Twenty-five patients of ROCM were treated with the regimen. Mean age and fasting blood sugar levels were 53.48 years and 239.64 mg/dL respectively. All patients had history of intake of steroids with a mean daily dose of 86.39 mg of prednisolone equivalent. 88% of patients had a "proven" diagnosis of mucormycosis. Cultures were positive in 52% of patients with Rhizopus arrhizus as the predominant species. The mean daily dose of amphotericin received was 268 mg/day with a mean duration of 9.52 days. Mean daily dose of SSKI was 2.57 g. 21 patients (84%) had stabilization of disease at week 8 and achieved cure at the end of treatment whereas the mortality rate was 16%. Factors that significantly affected outcome were eye and central nervous system (CNS) involvement on presentation.

Conclusion: SSKI, with its remarkably low cost and safety profile, makes it a potential adjuvant drug that may help achieve the twin benefits of shortened duration and dose of LAMB.

Keywords: Amphotericin; COVID-19; Mucormycosis; Potassium iodide; SARS-CoV-2.

MeSH terms

  • Amphotericin B / therapeutic use
  • Antifungal Agents / therapeutic use
  • COVID-19*
  • Eye Infections, Fungal* / diagnosis
  • Eye Infections, Fungal* / drug therapy
  • Eye Infections, Fungal* / epidemiology
  • Humans
  • Mucormycosis* / diagnosis
  • Mucormycosis* / drug therapy
  • Orbital Diseases* / diagnosis
  • Pandemics
  • Potassium Iodide / therapeutic use
  • Retrospective Studies
  • SARS-CoV-2
  • Tertiary Care Centers

Substances

  • Antifungal Agents
  • liposomal amphotericin B
  • Potassium Iodide
  • Amphotericin B