Decompression Illness Incidence and Hypoxia Symptoms After Prebreathing in Hypobaric Hypoxia Training.

Hypobaric hypoxia training utilizing the environmental chamber is often preceded by prebreathing of 100% oxygen with the goal of reducing decompression illness (DCI). We aimed to study the impact of prebreathing 100% oxygen for 30 min prior to hypobaria exposure to 7600 m (25,000 ft) on the incidence rate of DCI, as well as the impact of prebreathing on hypoxia symptoms felt during training. Records of participants who underwent hypobaric hypoxia training in the Republic of Singapore Air Force (RSAF) from 2011 to 2014 (before introduction of prebreathing) were compared to those who underwent similar training from 2014 to 2017 (after introduction of prebreathing) to determine the incidences of DCI for both groups.

Post-Traumatic Raynaud's Phenomenon: A Case Report.

Background: Raynaud's phenomenon has multiple etiologies, ranging from occupational causes to systemic disease. Most occupational causes of Raynaud's phenomenon usually present with vascular compromise.

Case Report: A 41-year-old Chinese woman presented to the emergency department with progressive pain and bluish discoloration over her right index finger after minor trauma.