Bladder dysfunction in human T cell lymphotropic virus infection: A prospective cohort study.

Area of Science:

• Neurology
• Infectious Diseases
• Urology

Background:

• Bladder dysfunction is common in human T cell lymphotropic virus type 1-associated myelopathy (HAM).
• Patients with possible or probable HAM/TSP may also exhibit bladder dysfunction, but their progression is less understood.
• This study compares bladder dysfunction severity and progression in possible versus definite HAM/TSP.

Purpose of the Study:

• To compare the severity and evolution of bladder dysfunction in HTLV-1-infected patients with possible and definite HAM/TSP.
• To assess differences in urodynamic findings and symptom progression between these groups.

Main Methods:

• A prospective cohort study followed 90 possible HAM/TSP and 84 definite HAM/TSP patients.
• Bladder dysfunction was assessed using bladder diaries, Overactive Bladder Symptom Scores (OABSS), and urodynamic studies.
• Progression was defined by the need for clean intermittent self-catheterization (CIC).

Main Results:

• Definite HAM/TSP patients had worse baseline nocturia, urgency, and OABSS scores.
• Detrusor overactivity was more prevalent in definite HAM/TSP (77.8%) than possible HAM/TSP (58.7%).
• Time to requiring CIC was shorter in definite HAM/TSP (5.5 years) compared to possible HAM/TSP (6.7 years).

Conclusions:

• Patients with possible HAM/TSP exhibit less severe bladder dysfunction at baseline and slower progression than those with definite HAM/TSP.
• Both groups tend to progress towards requiring CIC over time.
• Despite similarities, distinct progression rates highlight differences in disease evolution.