Prevalence and Characterization of Breakthrough Pain Associated with Chronic Low Back Pain in the South of Spain: A Cross-Sectional, Multicenter, Observational Study.

Chronic low back pain (CLBP) is highly prevalent in industrialized countries, where it is one of the main causes of disability. Patients with CLBP in treatment with opioids often experience episodes of breakthrough pain (BTP), but data on prevalence and treatment preferences are scarce. The objectives of this study were, first, the evaluation of the prevalence of BTP in patients with CLBP in the South of Spain ( = 1,868) and, second, the characterization of BTP in these patients ( = 295).

Evaluation of the quality of care of elderly patients with chronic and breakthrough pain treated with opioids: SAND study.

Objective: The objective of this study was to evaluate the quality of care of elderly patients with treatment for chronic pain (CP) and breakthrough pain (BTP).

Methods: A cross-sectional observational study was conducted in 20 pain units, selecting patients aged 70 years or older with baseline controlled CP in treatment with opioids and a diagnosis of BTP. Patients were classified as first episode of BTP or patient in follow-up.