Concordance of Preprocedure Testing With Time-of-Surgery Testing for SARS-CoV-2 in Children

Developmental progression of the nasopharyngeal microbiome during childhood and association with the lower airway microbiome

Background

The upper (URT) and lower (LRT) respiratory tract feature distinct environments and responses affecting microbial colonization but investigating the relationship between them is technically challenging. We aimed to identify relationships between taxa colonizing the URT and LRT and explore their relationship with development during childhood.

Methods

We employed V4 16S rDNA sequencing to profile nasopharyngeal swabs and tracheal aspirates collected from 183 subjects between 20 weeks and 18 years of age. These samples were collected prior to elective procedures at the Children's Hospital of Philadelphia over the course of 20 weeks in 2020, from otherwise healthy subjects enrolled in a study investigating potential reservoirs of SARS-CoV-2.

Findings

After extraction, sequencing, and quality control, we studied the remaining 124 nasopharyngeal swabs and 98 tracheal aspirates, including 85 subject-matched pairs of samples. V4 16S rDNA sequencing revealed that the nasopharynx is colonized by few, highly-abundant taxa, while the tracheal aspirates feature a diverse assembly of microbes. While no taxa co-occur in the URT and LRT of the same subject, clusters of microbiomes in the URT correlate with clusters of microbiomes in the LRT. The clusters identified in the URT correlate with subject age across childhood development.

Interpretations

The correlation between clusters of taxa across sites may suggest a mutual influence from either a third site, such as the oropharynx, or host-extrinsic, environmental features. The identification of a pattern of upper respiratory microbiota development across the first 18 years of life suggests that the patterns observed in early childhood may extend beyond the early life window.

Coronavirus disease 2019 and pediatric anesthesia

PURPOSE OF REVIEW

The purpose of this review is to provide the latest evidence for delivering safe and effective anesthesia care for pediatric patients with coronavirus disease 2019 (COVID-19) and to highlight continuing gaps in the literature.

RECENT FINDINGS

Safe and efficient care of pediatric patients with COVID-19 can be delivered with the proper planning, coordination, supplies, and staff preparation. From the start of the pandemic, pediatric anesthesiologists from around the world contributed important insights and shared experience as to how best to adapt anesthesia care for children with COVID-19 requiring general anesthesia and sedation. Although initial efforts focused on creating safe airway management processes, the role of anesthesiologists as perioperative leaders quickly extended to ensuring well-coordinated management of COVID-19 patients throughout the hospital for procedures, including preprocedure testing, patient transport, operating room setup, and ensuring the safety of staff. Several important areas remain not well studied including, the timing of rescheduling elective procedures following COVID-19 infection, the perioperative implications of re-infection, and future considerations of managing vaccinated children.

SUMMARY

Pediatric anesthesia care can be safely delivered to children with COVID-19 and after COVID-19 infection. More attention needs to be focused on the perioperative management of COVID-19 children in recovery requiring anesthesia.