Effect of Neuromuscular Block and Arterial PCO2 on Surgical Rating Scale (SRS), Following Reversal With Sugammadex

Inclusion Criteria: * (i) Patients diagnosed with renal or prostatic disease who are will undergo an elective laparoscopic renal surgical procedure or laparoscopic prostatectomy; * (ii) ASA class I-III * (iii) \> 18 years of age; * (iv) Ability to give oral and written informed consent. Exclusion Criteria: * (i) Known or suspected neuromuscular disorders impairing neuromuscular function; * (ii) Allergies to muscle relaxants, anesthetics or narcotics; * (iii) A (family) history of malignant hyperthermia; * (iv) Women who are or may be pregnant or are currently breast feeding; * (v) Renal insufficiency, as defined by serum creatinine x 2 of normal, or urine output \< 0.5 ml/kg/h for at least 6 h. When available, other indices will be taken into account as well such as glomerular filtration rate \< 60 ml/h and proteinuria (a ratio of 30 mg albumin to 1 g of creatinine). * (vi) Previous retroperitoneal surgery at the site of the current surgery. * (vii) Body mass index \> 35 kg/m2 * (viii) Chronic obstructive pulmonary disease GOLD 2-4 or a FEV1 less than 70% predicted or VC less than 70% predicted * (ix) chronic pulmonary disease with altered lung physiology (eg. sarcoidosis, cycstic fibrosis, obstructing pulmonary tumors, previous lung surgery)