Effect of Liberal Versus Restrictive Intraoperative Fluid Therapy on Postoperative Pulmonary Complications and Hemodynamics in Patients Undergoing Shoulder Arthroscopic Surgery.

The primary aim of our study is to leverage lung ultrasound to assess and identify postoperative pulmonary complications following shoulder arthroscopic surgery and the implications of the used irrigation fluid.the investigators will further investigate the impact of intraoperative fluid management strategies on these Postoperative pulmonary complications and their effects on hemodynamics. By harnessing the potential of lung ultrasound in this context, we aspire to enhance both the diagnostic capabilities and overall safety of shoulder arthroscopic surgery, ultimately improving patient outcomes.

Inclusion Criteria: * Patients scheduled for elective shoulder arthroscopic surgery. * Adults aged 18 years and above. * Capable of providing informed consent voluntarily. * No known allergies or sensitivities to substances commonly used in the surgical procedure or study. * Stable baseline hemodynamics during preoperative evaluation Exclusion Criteria: * Patients scheduled for open shoulder surgery. * Medical Comorbidities: * Pulmonary diseases, including chronic pulmonary diseases or pulmonary edema. * Previous cardiac diseases such as heart failure, myocardial infarction (MI), hypertension, and known types of arrhythmia. * Severe Organ Disease: Severe liver or kidney disease. * Body mass index (BMI) ≥ 35 kg/m². * Abnormal coagulation function. * Pregnancy * Refusal to Participate or Patients who cannot provide informed consent due to cognitive impairment or other reasons. * Previous shoulder arthroscopy.