Real-time detection, classification, and quantification of apneic episodes using miniature surface motion sensors in rats.

Background: Real-time detection and classification of apneic episodes remain significant challenges. This study explores the applicability of a novel method of monitoring the respiratory effort and dynamics for rapid detection and classification of apneic episodes.

Methods: Obstructive apnea (OA) and hypopnea/central apnea (CA) were induced in nine tracheostomized rats, by short-lived airway obstruction and administration of succinylcholine, respectively.

Transient decrease in PaCO(2) and asymmetric chest wall dynamics in early progressing pneumothorax.

Purpose: Diagnosis of pneumothorax (PTX) in newborn infants has been reported as late. To explore diagnostic indices for early detection of progressing PTX, and offer explanations for delayed diagnoses.

Methods: Progressing PTX was created in rabbits (2.