Authors : Dr. Samarth Gupta; Dr. Abhas Pratyush; Dr. Paramita Biswas

Volume/Issue : ICVDRS 2026

Google Scholar : https://tinyurl.com/yf48ekcc

Scribd : https://tinyurl.com/y6vf6tru

DOI : https://doi.org/10.38124/ijisrt/26jun1598

Abstract : Background: Coronary Artery Bypass Grafting (CABG) via median sternotomy often results in a 27–62% decline in inspiratory muscle strength. While standard physiotherapy focuses on mobilization, early-phase Inspiratory Muscle Training (IMT) is critical to prevent post-operative pulmonary complications (POPC) and restore the dynamic strength index ($S$-index). This study explores an evidence-based approach to early resistive loading in a high-risk cardiac patient.  Objective: To evaluate the safety and clinical efficacy of low-intensity Threshold-IMT on pain, thoracic expansion, and functional mobility in the immediate post-operative phase.  Case Description: A 64-year-old male with CAD-3VD and Left Main disease underwent a 4-vessel CABG. On POD 2, the patient presented in the ICCU with restrictive lung patterns, an NRS pain score of 7/10 (movement), restrictive thoracic expansion (0.8 cm), and an ICUMS mobility score of 10 (bed-bound).

Keywords : CABG, Inspiratory Muscle Training, Threshold Loading, Early Mobilization.