In addition, the subcommittee recommended changing the term permanent VS to chronic VS/UWS, citing Level B evidence. “Continued use of the term permanent VS is not justified. Use of this term implies irreversibility, which is not supported by the current research and has implications for family counseling, decision making, and the ethics of the field,” Dr. Giacino and his colleagues wrote.
In a separate summary of the guidelines, Dr. Giacino and his colleagues expressed concern about the lack of moderate or strong evidence for diagnostic assessment procedures in the literature, which they partially attributed to the inclusion of patients out 28 days or less from their injury in the systematic review for the guidelines. They further noted the lack of a gold-standard diagnostic approach for these patients, a lack of masking in diagnostic studies and tracking of recovery milestones and long-term functional outcomes for patients, and the limitations of the mainly retrospective analyses of outcomes in studies that they included. In addition, Dr. Giacino and his colleagues noted a lack of therapeutic studies with patients in inpatient rehabilitation centers and a “tendency by insurers to preferentially authorize rehabilitative care in lower-cost settings.” They excluded studies that had less than 20 patients, no control group, and were not “methodologically sound.”
Shorter lengths of stay in inpatient rehabilitation at academic medical centers have also led to problems in recruiting for placebo-controlled clinical trials, they noted.
“Under these circumstances, family members are often reticent to enroll patients with prolonged DoC in a placebo-controlled trial in view of the 50% likelihood of assignment to the placebo arm, preventing any possibility of active treatment during rehabilitation apart from routine physical, occupational, and speech therapies,” the authors wrote.
Several of the guidelines’ 16 authors disclosed ties to publishing houses and commercial or government entities, and participate in other activities related to the content of the published guidelines. Please see the full study for a complete list of disclosures.