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UHM Journal-Based CME Volume 50, Issue 4

Table of Contents: Memory surfacing among veterans with PTSD receiving hyperbaric oxygen therapyKeren Doenyas-Barak, MD; Ilan Kutz, MD; Erez Lang, MD; Gabriela Levi, BA; Shai Efrati MD Bubble rupture & viability of red blood cells under resonant acoustic standing wavesEdwin López Ramos, PhD; ...Read more

  • Course Description
  • Course Credits

Table of Contents:

  • Memory surfacing among veterans with PTSD receiving hyperbaric oxygen therapy
    Keren Doenyas-Barak, MD; Ilan Kutz, MD; Erez Lang, MD; Gabriela Levi, BA; Shai Efrati MD
  • Bubble rupture & viability of red blood cells under resonant acoustic standing waves
    Edwin López Ramos, PhD; Manuel Rivera Bengoechea, PhD; Silvina Cancelos Mancini, PhD; Carlos Marín Martín, PhD


  1. Understand that among individuals with PTSD, surfacing of new memories, accompanied by emotional distress and somatic pain, is common during hyperbaric medicine treatments.
  2. Understand how professional support and reassurance should be provided in case of memory surfacing during HBO2 to ensure treatment adherence.
  3. Understand that in treating patients for any indication, HBO2 medical teams should be aware and capable of addressing memory surfacing, particularly in those with a history of trauma.
  4. Discuss how blood is constantly off gassing in the pulmonary system, making the direction at which nitrogen travels is from the tissue to the blood where it is eventually off gassed through the pulmonary system. 
  5. Understand that in supersaturation, decreasing the size of a single bubble by one order of magnitude reduces the growth time.
  6. Discuss how resonant acoustic standing waves effectively rupture bubbles of 300µm to 900µm within a simplified swine thigh model.
  7. Discuss how resonant acoustic standing waves within a limb may non-invasively accelerate the dissolution of bubbles present in the bloodstream via bubble rupture.
  8. Understand that in the state of resonance, the electric signals monitored across the piezoelectric transducer are sensitive to minute changes in bulk mechanical properties of the system such as a sudden introduction of a micro-bubble, generating bubble detection signals.


  • Non-Member: $45
  • Regular UHMS Member: $35
  • Associate UHMS Member: $25


For over 50 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 – December 6, 2023

Termination date – December 6, 2026

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 1 Category A credit hour (Bubble rupture & viability of red blood cells under resonant acoustic standing waves) and 1 Category B credit hour by National Board of Diving and Hyperbaric Medical Technology, P.O. Box 758, Pelion, South Carolina 29123.

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