Evaluation of the Clinical Efficacy and New Health Management Model of Warm Needle Therapy for Elderly Patients with Ischemic Chronic Heart Failure Based on the "Shao Yin Disease" Theory from the Treatise on Cold Damage

INTERVENTION: Control Group:Standard Oral Drug Therapy for Chronic Heart Failure;Treatment group:Warm acupuncture+Standard Oral Drug Therapy for Chronic Heart Failure; CONDITION: Chronic heart failure PRIMARY OUTCOME: Traditional Chinese Medicine (TCM) Yang Deficiency and Blood Stasis Symptom Scoring;Minnesota Heart Failure Quality of Life Questionnaire; SECONDARY OUTCOME: NYHA Classification of Heart Function Assessment;6‐minute walk test;Peripheral blood detection of B‐type natriuretic peptide precursor;SF‐36 Health‐Related Quality of Life Assessment Scale; INCLUSION CRITERIA: 1. Patients who meet the diagnostic criteria of Western medicine and the syndrome differentiation criteria of traditional Chinese medicine, aged between 60 and 85 years, with no restriction on gender. 2. Patients with cardiac function classified as NYHA class II‐III. 3. Patients with hemodynamically stable conditions.