التفاصيل البيبلوغرافية
| العنوان: |
Effect of varying deep stop times and shallow stop times on precordial bubbles after dives to 25 msw (82 fsw). |
| المؤلفون: |
Bennett, P B, Marroni, Alessandro, Cronje, F J, Cali-Corleo, R, Germonpré, Peter, Pieri, M, Bonuccelli, C, Leonardi, M G, Balestra, Costantino |
| المصدر: |
Undersea & hyperbaric medicine, 34 (6 |
| سنة النشر: |
2007 |
| المجموعة: |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
| مصطلحات موضوعية: |
Hygiène et médecine sportives, Hygiène et médecine du travail, Education physique, Médecine pathologie humaine, Sciences bio-médicales et agricoles, Decompression Sickness -- prevention & control -- ultrasonography, Diving -- standards, Humans, Reference Values, Spinal Cord Diseases -- prevention & control -- ultrasonography, Time Factors |
| الوصف: |
In our previous research, a deep 5-min stop at 15 msw (50 fsw), in addition to the typical 3-5 min shallow stop, significantly reduced precordial Doppler detectable bubbles (PDDB) and "fast" tissue compartment gas tensions during decompression from a 25 msw (82 fsw) dive; the optimal ascent rate was 10 msw (30 fsw/min). Since publication of these results, several recreational diving agencies have recommended empirical stop times shorter than the 5 min stops that we used, stops of as little as 1 min (deep) and 2 min (shallow). In our present study, we clarified the optimal time for stops by measuring PDDB with several combinations of deep and shallow stop times following single and repetitive open-water dives to 25 msw (82 fsw) for 25 mins and 20 minutes respectively; ascent rate was 10 msw/min (33 fsw). Among 15 profiles, stop time ranged from 1 to 10 min for both the deep stops (15 msw/50 fsw) and the shallow stops (6 msw/20 fsw). Dives with 2 1/2 min deep stops yielded the lowest PDDB scores--shorter or longer deep stops were less effective in reducing PDDB. The results confirm that a deep stop of 1 min is too short--it produced the highest PDDB scores of all the dives. We also evaluated shallow stop times of 5, 4, 3, 2 and 1 min while keeping a fixed time of 2.5 min for the deep stop; increased times up to 10 min at the shallow stop did not further reduce PDDB. While our findings cannot be extrapolated beyond these dive profiles without further study, we recommend a deep stop of at least 2 1/2 mins at 15 msw (50 fsw) in addition to the customary 6 msw (20 fsw) for 3-5 mins for 25 meter dives of 20 to 25 minutes to reduce PDDB. ; Journal Article ; Validation Studies ; info:eu-repo/semantics/published |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
No full-text files |
| اللغة: |
English |
| العلاقة: |
uri/info:pmid/18251436; http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/114542Test |
| الإتاحة: |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/114542Test |
| رقم الانضمام: |
edsbas.6E5E01BB |
| قاعدة البيانات: |
BASE |
