Para-sternal Block is a type of locoregional anesthesia used in this clinical trial. It involves injecting anesthetic near the sternum to block pain in the chest area. This method is being evaluated for its effectiveness in improving respiratory function after cardiac surgery. The goal is to see if this type of pain management can help patients breathe better after their operation.

Respiratory Infection – This condition involves an infection in the respiratory tract, which can lead to symptoms such as cough, fever, and difficulty breathing. It often results in the production of sputum and may cause changes in lung imaging, such as new or altered opacities. The infection can be caused by bacteria, viruses, or other pathogens, and it may require antibiotic treatment if bacterial in nature.

Respiratory Failure – This condition occurs when the lungs cannot provide enough oxygen to the blood or remove carbon dioxide from it. It is characterized by low oxygen levels in the blood, which can lead to symptoms like shortness of breath and confusion. Respiratory failure may require supplemental oxygen or mechanical ventilation to support breathing.

Atelectasis – This condition involves the collapse of part or all of a lung, leading to reduced gas exchange and breathing difficulties. It is often identified by imaging studies showing lung opacification and displacement of structures like the mediastinum. Atelectasis can result from blockages, pressure on the lung, or other factors affecting lung expansion.

Bronchospasm – This condition is characterized by the narrowing of the airways due to muscle contraction, leading to wheezing and difficulty breathing. It is often triggered by allergens, irritants, or respiratory infections and can be relieved with bronchodilators. Bronchospasm is commonly associated with asthma and other respiratory conditions.