Pulmonary Artery Catheterization and Carvedilol Early Initiation in Cardiogenic SHOCK Due to HFrEF

Inclusion Criteria: * Adults age 19 and above ( no age limit for elderly ) * Patients with cardiogenic shock requiring intensive care monitoring in ICU * Patients eligible for oral medication administration * Patients who have provided research participation consent through a written informed consent form Exclusion Criteria: * Unwilling or unable to obtain informed consent by the participant or substitute decision maker * Patients with mechanical circulatory support at the time of screening * Patients with acute coronary syndrome * Patients with severe valvular heart disease requiring emergent percutaneous procedures or surgery * Known hypersensitivity to beta-blockers * Patients with a history of bronchospasm or asthma * Patients with bradycardia or second or third-degree atrioventricular block * Patients with sick sinus syndrome, including sinoatrial block * Patients with untreated pheochromocytoma * Patients currently undergoing de-sensitization therapy * Patients who are currently pregnant, postpartum period within 30 days or breast-feeding