Clinical value of the combined CTI and CALLY index in assisting the diagnosis of heart failure in elderly patients with acute exacerbation of chronic obstructive pulmonary disease

YANG Dan, LIU Cuicui, ZHAO Dongfang, LIU Zheng, ZHU Yafang

Tianjin Medical Journal . 2026, (6): 603 -607 . DOI: 10.11958/20253236