Arthroscopic surgery is a minimally invasive surgery developed in China in recent years. In addition to the knee joint, arthroscopy can also be used for the diagnosis and treatment of most people's shoulder diseases with small tissue trauma, fine operation, intuitive advantages. During arthroscopy, continuous lavage is required to expand the joint and provide a clear surgical field. Currently, isotonic solution (such as normal saline or lactate ringer's solution) has been used as a routine arthroscopic lavage solution, and its safety has been confirmed. However, shoulder arthroscopy requires high pressure and a large amount of washing fluid, and there has been no relevant report on whether it affects electrolytes in the body.

To observe the effect of rotator cuff repair on plasma potassium, sodium and chloride under shoulder arthroscopy.

Serum potassium, sodium and chlorine were collected from 22 patients who underwent rotator cuff repair under arthroscopy, and the changes were observed and recorded.

Potassium, sodium and chloride concentrations in blood were measured after shoulder joint surgery, and it was found that compared with those before surgery, there were different degrees of changes, but all in the normal range. However, there was a significant difference between potassium and chlorine before and after surgery with P<0.05, in which potassium decreased and chlorine increased.

With the application of shoulder arthroscopic repair for rotator cuff tear, postoperative sodium, potassium and chlorine all have different degrees of change, among which some patients have hypokalemia or hyperchloremia, and should be taken seriously.