Figure 1 (A) Application of the soft cervical collar during polysomnography. This figure demonstrates the application of the Case-Nelson Soft Cervical Collar in a patient undergoing overnight polysomnography (PSG). The cervical collar is designed to provide anterior airway support, reducing excessive neck flexion and minimizing upper airway collapse during sleep. Standard PSG monitoring electrodes, nasal cannula, and respiratory effort belts are also visible, ensuring comprehensive data collection on sleep parameters. (B) Lateral view of the soft cervical collar in place. A lateral view of the Case-Nelson Soft Cervical Collar is presented, illustrating its adjustable fit and positioning around the neck. The collar maintains a neutral head position, preventing posterior airway collapse, which is hypothesized to reduce apnea-hypopnea events in patients with obstructive sleep apnea (OSA). PSG monitoring equipment, including nasal airflow sensors and EEG electrodes, is also visible.