Patient access to data considered a plus
If lack of randomization is a weakness of this study, the decision to unblind the data for both investigators and patients might not be, according to Lynne Stevenson, MD, director of the cardiomyopathy program, Vanderbilt University Medical Center, Nashville, Tenn.
“You might be criticized for this [allowing patients to monitor their data], but I actually think this is a strength of the study,” said Dr. Stevenson, who believes the growing trend to involve heart failure patients in self-management has been a positive direction in clinical care.
She indicated that, despite the potential bias derived from being aware of fluid fluctuations, this information might also be contributing to patient motivation for adherence and appropriate lifestyle modifications.
Biykem Bozkurt, MD, PhD, chair of cardiology at Baylor College of Medicine, Houston, made a similar point but for a different reason. She expressed concern about the work that monitoring the wearable device creates for clinicians. Despite the positive data generated by this study, Dr. Bozkurt said the device as used in the study demanded “a lot of clinical time and effort” when these are both in short supply.
Mitchel L. Zoler/MDedge News
Dr. Biykem Bozkurt
While she called for a larger and randomized study to corroborate the results of this investigation, she also thinks that it would make sense to compare the clinical value of this device against alternative methods for monitoring heart failure, including other wearable devices. Dr. Bozkurt asserted that some of the most helpful devices from a clinical perspective might be those that patients monitor themselves.
“Hopefully in the future, we will be offering tools that provide patients information they can use without the immediate need of a clinician,” she said.
Dr. Boehmer reports financial relationships with Abbott, Boston Scientific, Medtronic, and Zoll Medical Corporation, which provided the funding for this study. Dr. Stevenson reports no potential conflicts of interest. Dr. Bozkurt reports financial relationships with Abbott, Amgen, AstraZeneca, Boehringer Ingelheim, Cardurion, LivaNova, Relypsa, Renovacor, Sanofi-Aventis, and Vifor.