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UHM Journal-Based CME Volume 48, Issue 3

Table of Contents: RESEARCH ARTICLE The effect of total compression time and rate (slope) of compression on the incidence of symptomatic Eustachian tube dysfunction and middle ear barotrauma: a Phase II prospective studyOwen J. O’Neill; David Dayya; Lince Varughese; Jo Anne Marker; Lubiha Perez; M ...Read more

  • Course Description
  • Course Credits

Table of Contents:


The effect of total compression time and rate (slope) of compression on the incidence of symptomatic Eustachian tube dysfunction and middle ear barotrauma: a Phase II prospective study
Owen J. O’Neill; David Dayya; Lince Varughese; Jo Anne Marker; Lubiha Perez; Michael Dayya


Decrease in dysbaric osteonecrosis severity as a result of 45-minute oxygen pre-breathe
Jacob Lamers; Kent MacLaughlin; Dave Pegelow; Marlowe Eldridge, MD; Aleksey Sobakin DVM, PhD

  1. Understand that using a 15-minute vs a 10-minute compression profile will reduce the observed number of patients requiring a stop due to Eustachian tube dysfunction, during a compression to 45 fsw in a multiplace setting.
  2. Understand that reducing the number of stops and holds (symptomatic Eustachian tube dysfunction), should result in less barotrauma and less of a tendency to terminate a patient’s treatment.
  3. Understand that a linear compression profile has an observed effect on reducing Eustachian tube dysfunction over a non-linear compression profile, however this finding is not statistically significant and is pending further study in the Phase III arm.
  4. The protocol studied in the multiplace setting may prove useful during compression in a monoplace chamber, but  this protocol has not yet been studied in a monoplace setting.
  5. To understand the effect of shorter lengths of oxygen pre-breathe in the reduction of dysbaric osteonecrosis (DON) and recommendations to prevent DON. 
  6. To explain how the main (multiple exposure to radical drop in pressure, greater maximal diving depth) and other potential (higher level of plasminogen activator, fat embolisms, hyperlipidemia) risk factors contributed to the development of DON.  
  • Non-Member: $45.00
  • Regular UHMS Member: $35.00
  • Associate UHMS Member: $25.00

For over 45 years the UHMS has been the primary source of information for hyperbaric medicine and physiology worldwide. This evidence based, peer-reviewed scientific journal-based CME has as its goal to address identified professional practice gaps and provide a quality CME opportunity which will improve scientific knowledge and skills for undersea, hyperbaric and wound care physicians, nurses and technicians, and other clinicians and personnel whose practice includes undersea, hyperbaric medicine and wound care.

Target Audience – Included in the “goal”

Date of the activity’s original release – August 31, 2022
Termination date – August 31, 2025

Accreditation Statement: The Undersea and Hyperbaric Medical Society is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

Designation Statements: 

Physician CME: The Undersea & Hyperbaric Medical Society designates this journal-based activity for a maximum of 2 AMA PRA Category 1 CreditsTM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Nursing/RRT Contact Hours: 2
License types: RN, LPN, CNS, ARNP, CAN. Provided through the Florida State Board of Nursing and the CE is reciprocal for nurses in the United States. Florida nursing credits are reciprocal and approved for nurses within all states. Receiving credit for Florida providers is simple, attend the course and our staff will upload your credits directly to the Florida State database. For out of state credit, we provide all the necessary paperwork for you to file with the respective nursing board.

NBDHMT Category A: This journal-based activity is approved for 2 Category A credit hours by National Board of Diving and Hyperbaric Medical Technology, 9 Medical Park, Suite 440, Columbia, South Carolina 29203.

  • NBDHMT Accreditation Statement: For CHT recertification purposes, the NBDHMT requires a minimum of nine of the minimum 12 required Category A credits relate directly to any combination of hyperbaric operations, related technical aspects and chamber safety.


UHMS Disclaimer: The information provided at this CME activity is for Continuing Medical Education purposes only. The lecture content, statements or opinions expressed however, do not necessarily represent those of the Undersea and Hyperbaric Medical Society (UHMS), its affiliates or its employees.

All individuals in control of content for this educational activity with their relevant financial relationship disclosed are listed below (if applicable). An individual who refuses to disclose relevant financial relationships will be disqualified from being in control of educational content at any time, and cannot have control of, or responsibility for, the development, management, presentation, or evaluation of the CME activity. 

Financial relationships are relevant if the following three conditions are met for the individual who will control content of the education:

  • A financial relationship, in any amount, exists between the person in control of content and an ineligible company.
  • The content of the education is related to the products of an ineligible company with whom the person has a financial relationship.
  • The financial relationship existed during the past 24 months


“None of the individuals in control of content (planners/faculty/reviewers/authors) for this educational activity have relevant financial relationship(s) to disclose with ineligible companies whose primary business is producing, marketing, selling, re-selling, or distributing healthcare products used by or on patients.”

There are no relevant financial relationships with ineligible companies to mitigate for this educational activity.

No commercial support was received for this activity.

Hardware/Software Requirements:

Hardware required for a learner to participate in this journal-based enduring material activity includes:

Computer with internet connection and a modern, updated browser
Note: If using IE 6, IE 7, or IE 8 we cannot guarantee that the courses will work.
Keyboard to take the quizzes
This journal-based Internet Enduring Material activity is produced for online use.

Provider Contact Information

If at any time during participation in this online CME enduring material event, a learner can contact UHMS, by clicking on "Contact Us" tab located on the far right hand side of the main menu bar found at the top of the screen. Also, the contact phone number and email address (hotlink) is always displayed on the top center of the screen, under the main menu bar.

Undersea and Hyperbaric Medical Society (UHMS)
631 U.S. Highway 1, Suite 307
North Palm Beach, FL 33408
Phone: +1-919-490-5140/877-533-8467
Fax: +1-919-490-5140