Amyotrophic lateral sclerosis (ALS) leads to respiratory failure due to chronic hypoventilation. The gold standard for measuring hypoventilationrequires an arterial blood gas, which is impractical in the outpatient setting due to invasiveness, pain, and need for specialized equipment. Recently, the Penn State Health Hershey ALS Clinic has implemented transcutaneous CO2 (TCO2) monitoring as standard of care clinical assessment. The overall goals of this study are to gather critical preliminary data for stakeholder-driven refinement of a TCO2 monitoring protocol within a busy ALS clinic and identify how TCO2 may enhance our understanding of standard respiratory measurements.

Participants will complete a survey related to their experience having their CO2 reading performed in the ALS Clinic.

$20 will be paid for every survey completed, for a maximum possible payment of $80 per person.