The Effects of Heart Rate Variability Biofeedback Training on Hematopoietic Cell Transplantation Patients

Baseline surveys contained a series of scaled questions, including sociodemographic variables (age, sex, cancer type, and etc), profile of mood states, social well-being, emotional processing and acceptance.

"Participants randomized to the intervention arm will receive exactly the same four digital stories via REDCap, a standardized HRV sensor and accompanying smart phone app, and a 30-minute HRVB training to use the biofeedback signals to generate a resonant frequency pattern of HRV (coherence) after collecting data at baseline in person. Participants will be given a take-home manual and specifically asked to practice their HRVB skills at home for 5 minutes prior to viewing stories once each week and upload a log of their time practiced to the cloud. The main purpose of adding HRVB practice as a priming experience (i.e., to teach participants to practice HRV prior to viewing stories) is to optimize results by focusing patients' and caregivers' skills and experience on HRV as a mechanism of improved emotion regulation, and then combine this achieved coherent pattern with DS intervention."

Four Digital Stories Intervention (4 patient stories about hematopoietic cell transplantation (HCT) over the course of 2 weeks (2 videos per week) with a weekly email notification and reminder phone call. Each story was made with voice, images, and sound (3-5 minutes each). The 4 digital stories patients produced contained the following content: (1) a leukemia patient expressed and controlled her depression and anxiety and described how she dealt with the intensive treatment and recovery through a positive attitude and active coping; (2) a mother of 3 children, who was experiencing severe pain due to MS, coped with HCT through family support and positive reframing; (3) a lymphoma patient coped with the HCT procedures by praying during the treatment; and (4) a father of young twins had a HCT twice, and his wife helped him cope with emotional distress through open communication and expressing emotions.Participants will receive a 30-minute HRVB training session at T2.