I have attached along ecg report of my mother . She was having chest pain,with back pain and shoulder pain since yesterday evening . So today done ecg. Pain is increasing on deep breathing in centre of chest and also certain movement like lying down. Ecg says sinus tachycardia and Antroseptal t wave abnormality nonspecific. She also has history of cervical spondylosis usually pain in shoulders neck. Could it be heart related or its musculoskeletal? Any further tests needed and what about ecg changes??