Neuromuscular blocking agents are often used during general anesthesia. Also, general anesthesia may be performed without use of neuromuscular blocking agents.

Avoiding neuromuscular relaxation enables better muscle strength recovery.

Rocuronium is well used neuromuscular blocking agent during general anesthesia. Although very often used, neuromuscular blocking agents may sometimes have consequence in form of residual neuromuscular block.

Tha aim of the study is to compare influence of rocuronium during general anesthesia on muscle strength recovery measured by hand grip dynamometer. Measuremwnt of hand grip strength is perforrmed before and after general anesthesia. This research should contribute to better choice of anesthesia technique and better quality of patient recovery, as studies so far have not been detaily carried out.

Hypothesis of the research is that anesthesia without use of neuromuscular blocking agents may enable better recovery of muscle strength in immediate postoperative period.

Inclusion Criteria:

• patients ASA status I-III for surgery under general anesthesia
• signed informed consent for participating in research

Exclusion Criteria:

• neuromuscular disease
• poorly controled chronic or acute cardiovascular, respiratory or autoimmune disease
• known allergic reaction to any medication used in this research
• pregnancy
• refusal to participate in this research