# A Rare Case of Bare Lymphocyte Syndrome Presenting As Chronic Type 2 Respiratory Failure

## TL;DR

A 13-year-old with a rare immune disorder called Bare Lymphocyte Syndrome developed chronic breathing failure, which was successfully managed with early diagnosis and treatment.

## Contribution

This paper presents a rare case linking Bare Lymphocyte Syndrome to chronic type 2 respiratory failure in a teenager.

## Key findings

- The patient's respiratory failure was confirmed via arterial blood gas analysis and linked to BLS through whole genome sequencing.
- Early diagnosis and mechanical ventilation improved the patient's outcome and prevented mortality.
- The case highlights the importance of considering rare immune disorders in atypical respiratory failure presentations.

## Abstract

Type 2 respiratory failure, or hypercapnic respiratory failure, is brought on by low oxygenation (hypoxemia) and inadequate breathing (hypercapnia). It is produced by factors that can create an imbalance between the requirement and capacity of the respiratory system. The factors can include an increased requirement for muscles of respiration, reduction in their strength or effectiveness, or impediment of the ventilatory drive. Rarely, it can be caused by the bare lymphocyte syndrome (BLS), which usually affects young children and has a poor prognosis with accompanying debilitating disabilities. This is a case report that shares the unique findings of a 13-year-old patient with type 1 BLS and atopy, who is suffering from type 2 respiratory failure. She is susceptible to respiratory tract infections and has been treated for bronchopneumonia and tuberculosis in the past. She has been on assisted ventilation for the past 3.5 months, along with supplementary nutrition. She has been evaluated meticulously and methodically, ruling out other causes of her respiratory failure. Recognizing the root cause aided in her therapy and preventing mortality. This has been determined using clinical findings, lab results, and radiological reports. The diagnosis of hypercapnic respiratory failure was confirmed via an arterial blood gas analysis, whereas that of BLS was confirmed through a whole genome sequence test. Management entailed addressing the underlying cause, optimizing ventilation, and using mechanical ventilation to maintain respiratory function. Early detection and timely intervention were critical in enhancing the outcome for the patient.