Variation in Cardiac Rehabilitation for Pediatric Ventricular Assist Device Recipients Across North America

ehealth technology in cardiac exercise therapeutics for pediatric patients with congenital and acquired heart conditions: a summary of evidence and future directions

Many children and adolescents with congenital and acquired heart disease (CHD) are physically inactive and participate in an insufficient amount of moderate-to-vigorous intensity exercise. Although physical activity (PA) and exercise interventions are effective at improving short- and long-term physiological and psychosocial outcomes in youth with CHD, several barriers including resource limitations, financial costs, and knowledge inhibit widespread implementation and dissemination of these beneficial programs. New and developing eHealth, mHealth, and remote monitoring technologies offer a potentially transformative and cost-effective solution to increase access to PA and exercise programs for youth with CHD, yet little has been written on this topic. In this review, a cardiac exercise therapeutics (CET) model is presented as a systematic approach to PA and exercise, with assessment and testing guiding three sequential PA and exercise intervention approaches of progressive intensity and resource requirements: (1) PA and exercise promotion within a clinical setting; (2) unsupervised exercise prescription; and (3) medically supervised fitness training intervention (i.e., cardiac rehabilitation). Using the CET model, the goal of this review is to summarize the current evidence describing the application of novel technologies within CET in populations of children and adolescents with CHD and introduce potential future applications of these technologies with an emphasis on improving equity and access to patients in low-resource settings and underserved communities.

Self-reported quality of life in children with ventricular assist devices

BACKGROUND

We sought to describe QOL in children with VAD and to identify factors associated with impaired QOL.

METHODS

There were 82 children (6-19 years) in the Pediatric Interagency Registry for Mechanical Circulatory Support who completed the PedsQL +/- a VAD-specific QOL assessment pre-VAD implant (n = 18), 3 months post-VAD (n = 63), and/or 6 months post-VAD (n = 38). Significantly impaired QOL is a score >1 SD below norms.

RESULTS

Study patients were 59% male, 67% Caucasian, with cardiomyopathy diagnosis in 82%, and median age at implant of 14 y (IQR 11-17). PedsQL scores were lower than norms for physical (p < .0001) and psychosocial (p < .01) QOL in pre- and post-VAD groups. Compared to chronic health condition and complex or severe heart disease groups, PedsQL scores were lower for physical and psychosocial QOL in the pre-VAD group (p < .0001); however, psychosocial QOL was not significantly different in post-VAD groups. Psychosocial QOL was impaired in 67%, 40%, and 24% in pre-VAD, 3-month, and 6-month post-VAD groups, respectively. Total and psychosocial QOL scores were significantly higher in the 3-month and 6-month post-VAD group than pre-VAD (all p ≤ .02). VAD patients were most bothered by their inability to participate in usual play activities. Impaired QOL 3 months post-VAD was associated with inotropic support >2 weeks/ongoing post-VAD (p = .04).

CONCLUSION

Physical QOL is significantly impaired in most children pre- and post-VAD. However, psychosocial QOL is not significantly impaired in most children post-VAD suggesting VAD implantation may improve psychosocial QOL in children.

Safety and Feasibility of Exercise Rehabilitation in Children with Ventricular Assist Devices

Children with advanced heart failure may require ventricular assist devices (VAD) while awaiting heart transplantation. Currently, no data exist regarding the safety of exercise rehabilitation (ER) in children on VAD support. The purpose of this study was to determine the safety and feasibility of ER in children on VAD support awaiting heart transplantation. Eligible patients underwent VAD placement between 1998 and 2019; both inpatient and outpatient participants were included. After VAD implantation and when ambulatory, patients were enrolled in ER. Exercise sessions were scheduled three times a week and consisted of aerobic and musculoskeletal conditioning. A total of 29 patients (59% male, mean age 14 ± 3.2 years) were included with a median VAD duration of 120 ± 109 days. Cardiac diagnoses included cardiomyopathy (81%) and congenital heart disease (19%). VAD type included pulsatile (59%) and continuous-flow devices (41%). Eight hundred and sixty-four (85%) ER sessions were successfully completed and began at a mean of 49 days (range 19-108) after VAD implant. No adverse events, including episodes of hypotension, significant complex arrhythmia, or VAD malfunction occurred during exercise testing or ER, and no sessions were discontinued prematurely. Pediatric patients on VAD support can safely participate in ER with relatively high compliance, and sessions can be implemented early after VAD implantation. Given the safety profile, ER in pediatric VAD recipients, which is a modifiable pre-transplant risk factor that may improve functional capacity, warrants further study as a potential modality to improve post-transplant outcomes.