Atypical Inflammatory Syndrome Triggered by SARS-CoV-2 in Infants with Down Syndrome.

While adults with Down syndrome (DS) are at increased risk of severe COVID-19 pneumonia, little is known about COVID-19 in children with DS. In children without DS, SARS-CoV-2 can rarely cause severe COVID-19 pneumonia, or an even rarer and more typically pediatric condition, multisystem inflammatory syndrome in children (MIS-C). Although the underlying mechanisms are still unknown, MIS-C is thought to be primarily immune-mediated. Here, we describe an atypical, severe form of MIS-C in two infant girls with DS who were hospitalized for over 4 months. Immunological evaluation revealed pronounced neutrophilia, B cell depletion, increased circulating IL-6 and IL-8, and elevated markers of immune activation ICAM1 and FcÉ£RI. Importantly, uninfected children with DS presented with similar but less stark immune features at steady state, possibly explaining risk of further uncontrolled inflammation following SARS-CoV-2 infection. Overall, a severe, atypical form of MIS-C may occur in children with DS.

Angioedema From Triple Therapy: A Case Report.

Angioedema is a rare but potentially life-threatening complication associated with angiotensin-converting enzyme (ACE) inhibitors. Although the pathophysiology is well understood, cases involving the concurrent use of other medications are less explored. We present a unique case of ACE inhibitor-induced angioedema in a 57-year-old male, which developed soon after receiving intravenous contrast. The patient's medication list included a dipeptidyl peptidase-IV inhibitor and a calcium channel blocker. Studies have shown an increased risk of angioedema with the combined use of these medications, likely due to alterations in bradykinin metabolism. This case highlights the importance of medication review and consideration of potential drug interactions when prescribing ACE inhibitors. It emphasizes the significance of diagnostic accuracy to avoid the mislabeling of allergies and consideration of other etiologies in angioedema. Healthcare providers ought to be mindful of the increased risk of angioedema when prescribing dipeptidyl peptidase-IV inhibitors and calcium-channel blockers with ACE inhibitors, as these are frequently used medications.