Impact of Shunt Treatment on Gait, Falls, Cognition, and Quality of Life in iNPH

Overview

In patients with idiopathic normal pressure hydrocephalus (iNPH), ventriculoperitoneal shunt surgery significantly improved gait speed, reduced fall incidence, enhanced cognitive function, and increased health-related quality of life three months postoperatively. These findings were based on assessments using standardized gait tests, cognitive screening, and quality of life measures at Karolinska University Hospital.

Background

Idiopathic normal pressure hydrocephalus is a neurological disorder primarily affecting elderly patients, characterized by a triad of gait disturbance, cognitive decline, and urinary incontinence, alongside ventricular enlargement. The etiology remains unclear but vascular comorbidities are implicated. Untreated iNPH carries a high risk of early mortality. Shunt surgery is the standard treatment aimed at diverting cerebrospinal fluid to alleviate symptoms and improve patient outcomes.

Data Highlights

Key Findings

• Median walking speed improved by 25% from 0.72 m/s to 0.9 m/s post-shunt surgery (p < 0.0001).
• Number of steps during the 10-meter walk test decreased significantly from 23 to 20 steps (p < 0.0001).
• Timed Up and Go test median time decreased from 19 to 15.25 seconds, indicating improved functional gait (p < 0.0001).
• Over half of patients (53.3%) improved walking speed by more than 0.1 m/s, and 62.5% improved TUG time by more than 2.5 seconds.
• Common comorbidities included hypertension (64%), cardiovascular disease (29%), and diabetes (23%), with minimal confounding from spinal stenosis (6%).

Clinical Implications

These results support the use of ventriculoperitoneal shunt surgery in iNPH patients to significantly improve gait function and reduce fall risk, which are critical for maintaining independence. Cognitive function and quality of life measures also benefit, underscoring the importance of timely diagnosis and intervention. Clinicians should consider comprehensive pre- and postoperative assessments to monitor treatment efficacy.

Conclusion

Ventriculoperitoneal shunt surgery in iNPH patients leads to marked improvements in gait, reduction in falls, cognitive function, and quality of life within three months postoperatively. This reinforces the therapeutic value of shunting in managing iNPH symptoms effectively.

References

1. Article Source 2024 -- Impact of Shunt Treatment on Gait, Fall Incidence, Cognitive Abilities, and Quality of Life in Patients with Idiopathic Normal Pressure Hydrocephalus