Acute Decompression Illness (DCI): the Significance of Provocative Dive Profiles is a 2001 meeting abstract by Benton, published in Undersea & Hyperbaric Medicine 2001. It addresses how dive profiles that may increase decompression stress relate to acute DCI, a central concern for divers and clinicians assessing post-dive illness.
What does a provocative dive profile mean?
A dive profile is the pattern of depth and time during a dive, including ascent and any decompression stops. A profile is described as provocative when its features are considered capable of placing greater stress on decompression than a less demanding exposure. The term frames a question about risk; it does not by itself establish that illness will occur.
During a dive, increased ambient pressure causes more inert gas, chiefly nitrogen in ordinary compressed-air diving, to dissolve in body tissues. On ascent, pressure falls and this gas must leave the tissues and blood through the lungs. The rate and pattern of pressure change, along with exposure depth and duration, shape the challenge of returning to surface pressure safely.
Decompression illness is an umbrella term encompassing decompression sickness and arterial gas embolism. These conditions can have overlapping symptoms and may arise through different mechanisms involving gas bubbles and the effects of pressure change. The title places acute illness—not merely theoretical decompression stress—at the centre of attention.
Why might profiles make decompression more demanding?
Decompression models and dive planning methods seek to manage inert-gas uptake and elimination, but no profile can be treated as a complete description of an individual diver’s physiological state. Repetitive dives, limited surface intervals, deep or prolonged exposures, and rapid changes in depth can all complicate the decompression picture. Their relevance depends on the full sequence of exposure rather than on one feature considered in isolation.
Ascent is especially important because a reduction in ambient pressure can allow dissolved inert gas to form bubbles. Bubbles may remain clinically silent, while symptomatic decompression illness involves effects on tissues or circulation. This distinction helps explain why physiological markers, profile characteristics and clinical outcomes are related questions, but not interchangeable ones.
What questions does this subject raise for research?
Research on provocative profiles can examine how particular patterns of depth, time and ascent relate to acute decompression illness. It can also consider how to define a demanding exposure, how to compare profiles, and how to distinguish a possible contribution from other influences. Those are broad questions in decompression research, not conclusions about any one profile.
Interpreting such work requires care. A profile may be associated with greater decompression stress without making an individual outcome inevitable, and an episode of illness cannot always be attributed to a single feature of a dive. The clinical picture, timing, exposure history and competing explanations all matter in evaluating suspected DCI.
- Inert-gas kinetics: how gas enters and leaves tissues as pressure changes.
- Ascent and decompression: the management of pressure reduction after underwater exposure.
- Bubble formation: a physiological process relevant to decompression stress, but not identical to symptomatic illness.
- Acute DCI: a clinical concern requiring prompt recognition and assessment.
How does this topic fit into diving medicine?
Decompression research connects dive planning and physiology with the diagnosis and treatment of pressure-related illness. Studies of profiles help frame the practical problem of how exposure patterns may affect risk, while clinical research addresses how illness presents and how care should be organised. The subject therefore matters to recreational and working divers, scientific divers, diving physicians and hyperbaric clinicians.
Acute symptoms after diving warrant urgent assessment rather than self-diagnosis or reliance on a dive computer alone. Suspected decompression illness should be discussed with a diving-medicine physician or other qualified emergency medical professionals; hyperbaric care may be considered as part of clinical management. A research discussion of profiles does not replace individual medical evaluation.
Frequently asked questions
What is decompression illness?
Does a provocative profile mean DCI will happen?
What should someone do about symptoms after a dive?
Citation details
- Title: Acute Decompression Illness (DCI): the Significance of Provocative Dive Profiles
- Authors: Benton, BJ
- Year: 2001
- Published in: Undersea & Hyperbaric Medicine 2001
- Record type: Meeting abstract
- Repository record: Rubicon Research Repository, handle 123456789/1002
This page is an original summary written by the Rubicon editors from the publication’s bibliographic record. It does not reproduce the paper, its abstract or its data; consult the publication itself for its methods and findings.
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