Publications by authors named "Andrew T Thornton"
Purpose: This study evaluated whether or not polysomnography (PSG) inter-scorer reliability (ISR) across sleep centres could be improved by external proficiency testing (EPT), or by EPT combined with method alignment training.
Methods: Experienced scorers form 15 sleep centres were randomised to the following: (1) a control group, (2) a group that received a self-directed intervention of EPT reports (EPT) or (3) a group that received an active intervention of method alignment training and EPT reports (EPT). Respiratory, arousal and sleep scoring ISR from sixteen PSG fragments were compared between groups across time.
Background: Women with liver transplants may be at increased risk for adverse outcomes.
Objective: The objectives of this study were to evaluate trends and provide recent data on outcomes for women with a liver transplant.
Study Design: The National (Nationwide) Inpatient Sample (NIS) from the Healthcare Cost and Utilization Project from 1998 to 2014 was used for this repeated cross-sectional analysis.
Study Objectives: To examine the impact of using a nasal pressure sensor only vs the American Academy of Sleep Medicine (AASM) recommended combination of thermal and nasal pressure sensors on (1) the apnea index (AI), (2) the apnea-hypopnea index (AHI), where the AHI is calculated using both AASM definitions of hypopnea, and (3) the accuracy of a diagnosis of obstructive sleep apnea (OSA).
Design: Retrospective review of previously scored in-laboratory polysomnography.
Setting: A tertiary-hospital clinical sleep laboratory.
Study Objective: To examine the impact of using American Academy of Sleep Medicine (AASM) recommended EEG derivations (F4/M1, C4/M1, O2/M1) vs. a single derivation (C4/M1) in polysomnography (PSG) on the measurement of sleep and cortical arousals, including inter- and intra-observer variability.
Design: Prospective, non-blinded, randomized comparison.
Study Objectives: To compare apnea-hypopnea indices (AHIs) derived using 3 standard hypopnea definitions published by the American Academy of Sleep Medicine (AASM); and to examine the impact of hypopnea definition differences on the measured prevalence of obstructive sleep apnea (OSA).
Design: Retrospective review of previously scored in-laboratory polysomnography (PSG).
Setting: Two tertiary-hospital clinical sleep laboratories.
Introduction: Exercise-induced hypoxemia (EIH) occurs in an uncertain proportion of endurance trained athletes. Whereas blood gas measurements must be corrected for core temperature at the time of sampling, the commonly used rectal temperature readings may not be the most appropriate.
Methods: Ten males [mean peak oxygen uptake, (.