VHMS 2017 Standards of Care
CHT-V - Certified Technologist Vet
HBOT in Veterinary Medicine VHMS
VHMS Position Statement
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The VHMS will be a forum for      

    communications involving hyperbaric  

    oxygen therapy.


The VHMS will promote continuing

    education in hyperbaric physiology,

    physics and medical application to

    professional students, technicians,

    practicing and academic veterinarians, the

    human medical community and the

    general public.


The VHMS will be a source for operational

    safety and animal management in the

    application of hyperbaric therapy in

    clinical medicine and research.



The VHMS will promote an interdisciplinary    

    approach to the sharing of information, the clinical

    application of hyperbaric therapy and to the

    discovery of new knowledge in

    hyperbaric medicine.


The VHMS will be a venue for those interested in

    hyperbaric medicine in animals and humans to

    share experiences, ideas, research efforts and

    results, needs, and to facilitate a multidisciplinary

    approach to collaboration and the sharing

    of expertise.



To develop an organized forum (the society) for

    those interested in veterinary and/or human

    hyperbaric medicine.​​

To educate professionals and the public about

    hyperbaric medicine and its application in animals.

    Target: veterinary students, practicing veterinarians,

    academic veterinarians, veterinary technicians,

    certified hyperbaric technicians, animal owners,

    societies, associations, and clubs, etc.


To facilitate, or be a link for, collaboration in the

    discovery of new knowledge in veterinary and

    human hyperbaric medicine.

To promote operator and patient safety and proper

    patient management before, during and after

    hyperbaric oxygen therapy.



The VHMS will promote and assist in the dissemination of new information in physics, physiology and clinical applications of hyperbaric oxygen therapy in animals.

The mission of the Veterinary Hyperbaric Medicine Society is to advance the science and clinical application of hyperbaric therapy in animal and human medicine through the promotion of education, discovery, and collaboration.



The VHMS will be a source of

     certification for the proper training of

     veterinary hyperbaric chamber

     operators and implementation of

     safety guidelines.

The VHMS will be a source of

     certification for the standards and

     specifications of hyperbaric chambers  

     used exclusively for the treatment

     of animals.    




The VHMS Seal indicates hyperbaric training that either meets or exceeds the qualifications for VHMS Approval.

A VHMS Approved Veterinary Facility is equipped with a veterinary hyperbaric chamber engineered specifically for the safety and needs of animals.  It must be comprised of materials and function to levels that meet VHMS specifications.

A VHMS Approved Veterinary Facility also employs a staff of chamber operators that have been educated and passed examination by a VHMS instructor.  The facility also agrees to continue VHMS training for future chamber operators.

Certified Hyperbaric Technologist - Veterinary

The certification CHT-V (Certified Hyperbaric Technologist-Veterinary) is acquired through the National Board of Diving and Hyperbaric Technology (

The VHMS provides the pre-requisite education for this board exam in conjunction with International ATMO (

The VHMS recommends that at least one person at each facility has CHT-V and attended an approved Hyperbaric Safety Director Training course. Approved courses are on the NBDHMT site and also the UHMS site.








Dr. Dennis Geiser 
University of Tennessee 
College of Veterinary Medicine,

Large Animal Clinical Sciences
Veterinary Hyperbaric Medical Society 
2407 River Drive 
Knoxville, Tennessee 37996 




Dennis R. Geiser
BS, DVM Dip ABVP Equine, CHT-V

Dr. Dennis Geiser is currently the Assistant Dean for Organizational Development and Outreach at the College of Veterinary Medicine, University of Tennessee.  He completed his BS degree in microbiology at Colorado State University and obtained his Doctor of Veterinary Medicine at the University of Illinois in 1972.  Dr. Geiser is board certified as a member of the American Board of Veterinary Practitioners.  He is also a Certified Veterinary Hyperbaric Technologist by the National Board of Diving and Hyperbaric Medical Technology (NBDHMT).


At Michigan State University he completed a residency in equine medicine and surgery.  He has bee an associate veterinarian in a small animal and equine practice in California and an equine referral practice in Florida.  At the University of Tennessee, he has been the section leader of the large animal anesthesia section, department head of the large animal department, and the Assistant Dean and Director of the College's continuing education section.  He currently directs the small and large animal hyperbaric medicine program at the UT Veterinary Medical Center in Knoxville TN.


Dr. Geiser was President of the Tennessee Veterinary Medical Association in 2012.

Dr. Mindy Johnson earned her degree in Veterinary Medicine in 1998 from the University fo Tennessee.  She attended the Veterinary Rehabilitation course thru the University of Tennessee.  She then became a Certified Canine Rehabilitation Therapist (CCRT) thru the Canine Rehabilitation Insitute in Florida.  She is a small animal veterinarian practicing rehabilitation, general medicine and surgery.


She opened a new full-service hospital and rehabilitation center "Veterinary Wellness Center" in Lexington, KY at "Uptown Hounds Boarding Facility."  Dr. Johnson's new clinic includes an impressive list of rehabilitation and medical therapies including hyperbaric oxygen therapy.


Dr. Johnson has been utilizing the beneficial effect of HBOT in the Treatment of traumatic injuries, rehabilitation cases and medical conditions as an adjunct therapy since 2005 in dogs, cats and other animals.  She is a Certified Hyperbaric Technologist-Veterinary (CHT-V) by the National Board of Diving and Hyperbaric Technology (NBDHMT).

Mindy Johnson
Shelena Hoberg
CHT, CHT-V, Certified Veterinary Nurse-Equine (AUST), EqCTPM

Shelena Hoberg is an Australian who served as an equine veterinary nurse and a certified equine and canine physical therapist in her homeland before relocating to the USA in 2001.


Shelena has been working in the veterinary hyperbaric medicine field since 2003 after 2 years as an equine veterinary technician at Hagyard Medical Institute in Lexington, KY.

Currently, Shelena is a hyperbaric and education consultant for Hyperbaric Veterinary Medicine (hvm).  She also serves on the faculty for International ATMO presenting the HMTT for Animal Applications course, a member of the UHMS and appointed as a Principal on the Animal Housing Facilities (NFPA 150) Committee with the NFPA.


United States Veterinary Hyperbaric Locations
United Kingdom Veterinary Hyperbaric Locations

Tel:  865-755-8266

    (Dennis Geiser, DVM, CHT-V)


    (Shelena Hoberg, CHT, CHT-V)

Lynne graduated in 1982 with an Associates in Animal Science. She, currently serves as Technician Coordinator and Safety Director for the Hyperbaric Chamber department at Hagyard Equine Medical Institute in Lexington KY. 

Lynne Hewlett

Veterinary Hyperbaric Medicine Society | 2407 River Drive | Knoxville, TN 37996-4550 | | (865) 755-8266 / (859) 983-9483 | Copyright ©2016-2018 All Rights Reserved