Neuromuscular block improves operation conditions during laparoscopic surgery. In this study, a new measurement tool is assessed: the degree of abdominal distension during the time course of the neuromuscular block is measured and compared with a standardized score (surgical rating score).
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
50
measurement of change in abdominal wall length \[cm\] during neuromuscular block with a measuring tape.
Measurement of the time course of the neuromuscular block: neuromuscular transmission is measured by assessment of the post tetanic count and the train of four ratio using acceleromyography (TOF Watch SX™, Essex Pharma GmbH, Munich, Germany) at the right adductor pollicis muscle with transcutaneous Ag/AgCl electrodes (electrocardiogram electrodes; Ambu Inc., MD 21060 USA);
assessment of operating conditions by means of a standardized score: surgical rating score: 1. extremely poor conditions 2. poor conditions 3. acceptable conditions 4. good conditions 5. optimal conditions
Kreiskrankenhaus Dormagen
Dormagen, Germany
change in abdominal wall length (cm) during time course of the block
Changes in abdominal wall length are measured during the time course of the neuromuscular block every 15 min.
Time frame: during operation
Change of surgical Rating scale (SRS) scores during neuromuscular block
assessment of operating conditions by means of a standardized score: surgical rating score (Martini et al. Evaluation of surgical conditions during laparoscopic surgery in patients with moderate vs. deep neuromuscular block. Br J Anaesth 2014; 112: 498-505: 1. extremely poor conditions 2. poor conditions 3. acceptable conditions 4. good conditions 5. optimal conditions The surgical rating score is assessed every 15 min together with abdominal wall length and depth of neuromuscular block
Time frame: during operation
changes of abdominal distension or surgical Rating score (SRS) induced by additional analgesics, sedatives or neuromuscular blocking agents
If a bolus of an analgesic, sedative or neuromuscular blocking agent is required because of inadequate anesthesia during the operation, all measurements mentioned above are performed immediately after the injection of the drug in order to assess the effect of the bolus injection.
Time frame: during operation
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