Partial Pressures and Pressure Injuries (1.0 hour)

by Robert Sheffield, BA, CHT and Deborah Sheffield, MSN, CHRN

Please Read Before You Purchase

This activity is taken from a DVD titled CHT/CHRN Certification Exam Review Course.  If you have used this topic for credit in the past the NBDHMT will not allow you to re-use the same content for renewal credit.


This activity consists of 2 separate video topics for hyperbaric technologists and nurses: (1) Increased Partial Pressure of Gases. The concepts of hypoxia, oxygen diffusion distance, oxygen toxicity, nitrogen narcosis, and high pressure nervous syndrome are presented. Presenter-Robert Sheffield (21 min). (2) Pathophysiology of Pressure Injuries. The underlying causes of barotrauma (ear, sinus, and pulmonary), decompression sickness, and air embolism are presented. The relevant anatomy is discussed. Presenter-Deborah Sheffield (37 min)

Continuing Education

[Nurse] 1.0 contact hours. Provider approved by the California Board of Nursing. Provider number CEP17094.

[CHT] This activity has been reviewed and is acceptable for 1.0 Category A credits by the National Board of Diving and Hyperbaric Medical Technology.

CHT re-certification requires a minimum of nine of the minimum 12 Category A credits relate directly to any combination of hyperbaric operations, related technical aspects and chamber safety.

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