Bifidobacterium animalis subsp. lactis LPL-RH improves postoperative gastrointestinal symptoms and nutrition indexes by regulating the gut microbiota in patients with valvular heart disease: a randomized controlled trial

Schematic diagram of the effect of B. animalis subsp. lactis LPL-RH on postoperative gastrointestinal symptoms, gut microbiota, and other clinical indicators in patients with VHD.