Inclusion Criteria:  The patients who underwent lung surgery for the first time. Both male and female will be included. The patient of age between 45-55 years. Hyperventilated patient due to post-operative pain  Exclusion Criteria:  Post-operative renal failure or arrhythmia needed for a pacemaker. Post-operative mechanical ventilation (more than 24 hours). Patients suffering from Cardiac diseases. (Congenital heart disease, Coronary artery disease (narrowing of the arteries), Deep vein thrombosis and pulmonary embolism, Heart attack, Heart failure. And Heart muscle disease).