Interdisciplinary inpatient care may boost outcomes in PWS patients
Small study shows behavioral, functional, and metabolic improvements
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A structured interdisciplinary inpatient program for adolescents and young adults with Prader-Willi syndrome (PWS) and severe behavioral problems was associated with behavioral, functional, and metabolic improvements, a small study found.
The study included nine participants who underwent an inpatient program combining behavioral therapy, supervised nutrition, rehabilitation, and psychiatric care.
“The data do not isolate a mechanistic link between behavioral and metabolic change, but they show that these domains improved together within a unified inpatient model, providing a strong rationale for prospective study,” researchers wrote.
The study, “An exploratory retrospective analysis of concurrent metabolic and behavioral change in Prader-Willi syndrome during interdisciplinary inpatient stabilization,” was published in Journal of Psychiatric Research.
Participants attended specialized inpatient program
PWS is a complex genetic disease marked by a wide range of symptoms, including excessive hunger (hyperphagia) that often leads to obesity, extreme food-seeking behaviors, cognitive and developmental issues, behavioral problems, and psychiatric conditions.
“Severe behavioral dysregulation frequently precipitates hospitalization and is often triggered by food-related stressors or disruptions of predictability,” the researchers wrote. However, “standard psychiatric units may be ill-equipped for hyperphagia-related safety and metabolic risks, whereas medical settings may lack the behavioral infrastructure for psychiatric stabilization.”
While guidelines stress the importance of interdisciplinary cooperation and coordination for such PWS cases, few studies have described the effects of integrated inpatient models.
With this in mind, a team of researchers in the U.S. retrospectively analyzed data from nine adolescents and young adults with PWS who were admitted to a specialized inpatient program for severe behavioral dysregulation.
“The program addresses severe behavioral dysregulation and metabolic instability through integrated psychiatric, behavioral, medical, nutritional, and rehabilitative care within a pediatric inpatient hospital,” the team wrote.
Documented aggression resolved during during inpatient program
Participants’ median age was 16 years, and most were female (56%). At admission, they had a median weight of 125.2 kg (about 276 pounds) and a median body mass index (BMI; a ratio of height and weight) of 46 kg/square meter, which falls in the category of severe obesity. Seven participants had obstructive sleep apnea, a condition that causes repeated pauses in breathing during sleep.
At admission, six participants (67%) were taking psychiatric medications including antidepressants (56%), antipsychotics (44%), anxiolytics (22%), and stimulants (22%). More than half were taking growth hormone (also known as somatropin), sleep medications, and medications to reduce blood sugar.
During hospitalization, which lasted a median of 161 days (about five months), food access was restricted, and meals were supervised and followed individualized plans. Behavioral therapy used a token-based reward system to reinforce target behaviors, while participants also received physical, occupational, recreational, and speech therapy.
Psychiatric care included individualized management of mood instability, anxiety, compulsive behaviors, aggression, and psychotic symptoms. Medications and dietary targets were reviewed weekly and adjusted according to each participants’ clinical response.
Data showed that token engagement significantly increased over time, from 88% in the first two weeks to 94% in the final two weeks.
“Documented aggression resolved during inpatient stabilization,” the researchers wrote, noting that aggressive incidents were reported in all participants during their first week, but in none during their final week.
Program associated with a significant body weight loss
Functional capacity also improved significantly. The distance participants could walk during a six-minute walking test increased by a median of 253 feet (about 77 meters), while measures of functional independence also improved.
Estimated daily energy expenditure increased significantly, by a median of 225 kcal, “despite no significant change in step count, consistent with increased physical activity intensity within the structured inpatient environment,” the researchers wrote.
The program was also associated with a significant body weight loss — a median of 73 pounds (about 33 kg), corresponding to about 1.2% of their starting body weight each week. This was accompanied by significant decreases in BMI, measures of body fat, and blood levels of fatty molecules and HbA1c (which reflects average blood sugar).
This pilot study provides preliminary evidence that structured interdisciplinary inpatient treatment for severe behavioral dysregulation in PWS is associated with concurrent improvements across behavioral, functional, and cardiometabolic domains.
Three months after discharge, eight participants (89%) had not been rehospitalized. Caregivers reported that all nine participants remained within 10 pounds (about 4.5 kg) of their discharge weight, and that all but two showed excellent or good overall well-being.
“This pilot study provides preliminary evidence that structured interdisciplinary inpatient treatment for severe behavioral dysregulation in PWS is associated with concurrent improvements across behavioral, functional, and cardiometabolic domains,” the team wrote.
The researchers emphasized, however, that the findings cannot establish that the inpatient program caused the observed changes. The study’s retrospective nature, small size, and absence of a control group were pointed out by the researchers as limitations.
The team called for larger studies following patients over time to determine how much of the improvement is attributable to behavioral, nutritional, rehabilitation, or medication-based interventions and whether the benefits persist after discharge.
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