DecompressionSickness

1,205 views

Published on

ETEC 661 Project

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,205
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
78
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

DecompressionSickness

  1. 1. Decompression Sickness (DCS)<br />Robert Bruck<br />ETEC 661<br />
  2. 2. Why Develop This Lesson Plan<br />Decompression sickness can result in: <br />Fatalities<br />Paralysis<br />
  3. 3. What is Decompression Sickness<br />Result of change in barometric pressure<br />Affects non-compressible parts of the body<br />Formation of gas bubbles during pressure changes<br />
  4. 4. Occurrences<br />Un-pressurized aircraft.<br />Spacecraft Extra Vehicular Activity (EVA).<br />Caisson works.<br />Diving<br />
  5. 5. Diving<br />Staying at depths exceeding 1 atmosphere too long.<br />Rapid ascent.<br />
  6. 6. How DCS Occurs<br />Henrys Law basically states that gasses will dissolve into a fluid in proportion to the partial pressure exposed to.<br />When breathing compressed air in higher pressure, the body absorbs many more molecules of nitrogen and oxygen than at sea level.<br />During ascension, the human body must outgas all of the additional molecules stored in the body tissue.<br />If this is not accomplished, DCS occurs<br />
  7. 7. Conversely<br />If we ascend to the summit of a mountain that stands at 3.2 km above sea level…..<br />Atmospheric pressure is only 30% of the <br /> 1.04 kg per cm² at sea level (14.7 lb per inch²).<br />We are physiologically disadvantaged in oxygen intake which may lead to hypoxia<br />At 19 km of altitude blood boils<br />
  8. 8. DCS Types<br />Bends<br />Neurological<br />Pulmonary<br />Skin Bends<br />
  9. 9. Bends Symptoms<br />Localized deep pain.<br />Pain associated with joint activity.<br />Pain experienced with increases in altitude.<br />
  10. 10. Neurological Symptoms<br />Brain<br /> Amnesia-Headache -Vision -Nausea<br />Spine<br />Tingling in lower chest and back-Extreme weakness -Constriction in chest <br />Peripheral Nerve System<br />Incontinence -Parastethia -Twitching<br />Inner Ear<br />Vertigo -Loss of balance-Loss of hearing<br />
  11. 11. Pulmonary Symptoms<br />Burning in chest<br />Respiration pain<br />Dyspnea<br />Dry cough<br />
  12. 12. Skin Bends Symptoms<br />Formication, crawling skin sensation.<br />Pitting edema, swelling of the skin.<br />Itching. <br />Skin discoloration.<br />
  13. 13. If You Suspect DCS<br />Inform a dive physician<br />Keep the patient calm, quiet and flat <br />Administer 100% oxygen if available<br />Encourage oral fluid intake<br />Administer CPR if needed<br />Arrange for transfer to a decompression facility<br />
  14. 14. Thank You<br />I hope this was informative and may be of help to anyone encountering DCS in the future.<br />Some informative sites:<br />http://www.medtogo.com/acute-decompression-bends.html<br />http://www.diversalertnetwork.org/default.aspx<br />http://www.thwoundcenter/faq.asp<br />

×