Venous gas emboli (VGE) are bubbles that form and grow in a diver’s tissues and bloodstream during the decompression phase of the dive. Although VGE has long been associated with decompression stress, the precise relationship with decompression sickness is unknown. In addition, new theories suggest that cellular debris known as microparticles may have an important […]
SCUBA diving involves complex processes such as decision making, memory, motor coordination, and spatial orientation. Given that human error has been attributed to nearly 90% of diving incidents, it is plausible that some scuba diving activities can use up mental resources and increase accident risk. Divers are also susceptible to numerous factors that affect cognition […]
Venous gas emboli (VGE) are bubbles that can appear in the blood after a dive due to decompression. These bubbles are detectable using ultrasound imaging and provide a measure of decompression stress. VGE appear at different rates both for different divers and for the same diver on different days. Reasons for variation in VGE and […]
Since the declaration of the pandemic, the pulmonary effects of COVID-19 have been causing concern. DAN is looking for divers who have recovered from suspected or confirmed COVID-19 infection for a long-term study on the effects of COVID-19 on divers’ health and fitness to dive.
Heart issues are frequently implicated in scuba diving fatalities. Abnormal heartbeats, also known as arrythmias, can be a marker of cardiac compromise. This study follows 110 divers during six scuba diving trips and characterizes the factors that contribute to any post-diving arrythmias.
The diving incident reporting system (DIRS) is one of the tools we use to gain insight into the not-so-pleasant experiences divers sometimes have. The purpose of this ongoing study is to collect and analyze voluntarily submitted reports of breath-hold and scuba diving safety mishaps reports in order to reduce injuries and fatalities.
Until we succeed in making every dive accident- and injury-free, DAN will continue to collect and analyze information about dive fatalities. The purpose of this database is to monitor trends in fatal injuries and identify risk factors associated with fatal diving accidents.
Spinal cord decompression sickness is among the most serious forms of decompression illness. This project studies the mechanics of how bubbles damage the spinal cord by using high-resolution magnetic resonance imaging to observe bubble growth and tissue damage in decompressing tissue samples. The goal is to improve recompression treatment.
The purpose of this prospective study is to estimate the occurrence of returning or worsening symptoms of DCI in both divers that fly after treatment and treated divers that do not and to determine how long divers wait before flying after treatment for DCI.
Venous gas emboli (VGE) are bubbles that can appear in the blood after a dive due to decompression. These bubbles are detectable using ultrasound imaging and provide a measure of decompression stress. Advanced ultrasound imaging techniques are being developed at UNC for detecting these microbubbles and differentiating them from VGE.