Antimuscarinics for burn patients: Helpful or harmful for sensation recovery?
Abstract
BACKGROUND
Burn injuries are a major cause of morbidity and mortality, often resulting in nerve damage that causes pain or numbness. Loss of protective sensation increases the risk of future injury. Enhancing nerve regeneration after burns is critical. Antimuscarinic drugs, used to treat overactive bladder, have shown potential in promoting peripheral nerve growth by supporting cytoskeletal development and mitochondrial trafficking. This study investigates whether antimuscarinic use at the time of burn injury is associated with increased nerve regeneration.
METHODS
We conducted a retrospective analysis using the TriNetX Research Database. Burn patients were identified using ICD-10-CM codes by anatomical area and total burn surface area (TBSA). The experimental group included patients taking one of seven antimuscarinic drugs (darifenacin, fesoterodine, oxybutynin, propiverine, solifenacin, tolterodine, or trospium) at the time of injury. Controls were burn patients not on these medications. Patients with preexisting sensory disturbances were excluded. Propensity score matching was performed by age, sex, diabetes status, and either burn location or TBSA. Paresthesia 3-24 months post-injury was used as a proxy for nerve regeneration.
RESULTS
Among 362,224 patients with burns coded by anatomical area, 9266 antimuscarinic users were matched to 9266 controls. Users were over twice as likely to develop paresthesia (RR: 2.19, CI: [1.85, 2.60]) and had higher analgesic use (52.4 %…
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