Virtually guided exposure therapy improves outcomes in patients with PTSD

The study’s findings were presented at the International Society for Traumatic Stress Studies in November by Tanya Saraiya, Ph.D., a clinical psychologist and assistant professor at MUSC.

Exposure therapy has long been known to be effective at reducing PTSD symptoms. A hallmark symptom of PTSD is avoidance. In exposure therapy, one aspect of the treatment focuses on teaching patients to approach stressful situations, activities or places “in real life” that are safe but avoided because they remind them of their traumatic experiences. For example, patients often visit stores or restaurants, where crowds or noises might trigger their stress response. For some patients, this can be too painful, leading them to drop out of therapy. Virtually guided exposures could provide these patients the support they need to complete treatment.

In the study, a therapist virtually accompanied patients receiving guided exposure therapy, using Bio Ware by Zeriscope (Charleston, SC). Bio Ware enables the therapist to see and hear what the patient sees and hears, thanks to a video camera and microphone; communicate with the patient through ear buds; and track the patient’s heart beat and skin conductance, which are signs of therapeutic engagement.

“The whole point of this research is to create a wearable technology that allows the clinician to pipeline virtually into those in vivo exposures and do it with the patient, while also using physiological data to guide them to have an optimal experience,” said Saraiya.

After 10 to 12 sessions of guided prolonged exposure therapy, most patients saw a clinically significant reduction of 10 to 20 points in their PTSD Checklist for DSM-5 (PCL-5) score, pushing them below the threshold for PTSD diagnosis.

Virtually guided prolonged exposure therapy may help to improve outcomes by ensuring patients are exposed to the appropriate levels of distress. If challenged to too much stress too quickly, the patient may discontinue therapy or not benefit as much. If challenged to too little stress, the patient may not experience reductions in their PTSD symptoms. In the standard version of prolonged exposure therapy, therapists rely solely on patient self-report to learn about details of the exposure, such as how long patients engaged in the activity or the level of stress they felt. This can make it difficult to calibrate and optimize the degree of stress exposure. The virtually guided exposures directly overcome this shortcoming.

“Trauma therapy is hard enough on its own, and it’s really courageous to work on yourself in any capacity in therapy, especially trauma. We hope this device will make it easier for patients to be in trauma therapy and improve clinical outcomes.” says Dr. Tanya Saraiya

Virtually guided exposure therapy using Bio Ware helps clinicians “tailor exposures to better help patients,” according to Saraiya. They can advise a patient to turn up or turn down the level of engagement based on the Bio Ware readings. For example, therapists can advise patients to challenge themselves by going through the regular checkout lane at the grocery store rather than the self-checkout, which has fewer people and does not require interaction with others.

The study, led by Sudie Back, Ph.D., was funded by a Small Business Innovation Research (SBIR) grant awarded to Zeriscope, a Charleston-based telehealth platform company, by the National Institute of Mental Health. Back and Zeriscope CEO Bill Harley are the co-principal investigators for the project.

The next step is to submit for an SBIR phase 2 grant to fund a larger clinical trial comparing the efficacy of guided versus non-guided exposure therapy and examine mechanisms of change in reductions of PTSD symptoms.

Saraiya, Back and the MUSC team are excited about how virtually guided exposure therapy using Bio Ware could help patients with PTSD and other anxiety disorders.

“Trauma therapy is hard enough on its own, and it’s really courageous to work on yourself in any capacity in therapy, especially trauma,” said Saraiya. “We hope this device will make it easier for patients to be in trauma therapy and improve clinical outcomes.”

Research into treatments for PTSD is so vital, so we’re delighted to see this progress being made, and hope that the further funding is achieved to allow this to proceed, and more important innovations are made.

It’s important to note, that while choosing your PTSD recovery path you need to address both the symptoms and the underlying condition. NICE guidance updated in 2018 recommends the use of trauma focused psychological treatments for Post Traumatic Stress Disorder in adults, specifically the use of Eye Movement Desensitisation Reprocessing (EMDR) and trauma focused cognitive behavioural therapy (CBT).

Please remember, these aren’t meant to be medical recommendations, but they’re tactics that have worked for others and might work for you, too. Be sure to work with a professional to find the best methods for you.

This article was originally posted to the Medical University of South Carolina website.