The purpose of this study is to evaluate the effects of MgSO4 administration on the pharmacodynamics of rocuronium in patients with 60 or more years of age.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
TRIPLE
Enrollment
64
MgSO4 30 mg/kg in 0.9% physiological saline (total volume 100 ml) intravenously, for 10 min, and then continuous intravenous infusion of MgSO4 at a rate of 1 g/h during the surgical procedure until the maximum of 3 h
100 ml of 0.9% physiological saline, for 10 min, and then continuous intravenous infusion of saline at a rate of 33 ml/h during the surgical procedure until the maximum of 3 h
Instituto Nacional de Câncer
Rio de Janeiro, Brazil
Total recovery time of neuromuscular block (DurTOF0.9)
Time from the start of injection of rocuronium until TOF ratio 0.9
Time frame: Within the surgical procedure
Onset time
Time from the start of injection of rocuronium until 95% depression of the first twitch (T1) of the TOF
Time frame: Within the surgical procedure
Clinical duration (Dur25%)
Time from the start of injection of rocuronium until T1 of the TOF had recovered to 25% of the initial T1 value
Time frame: Within the surgical procedure
Recovery index (Dur25-75%)
Time between 25% and 75% recovery of the initial T1 value
Time frame: Within the surgical procedure
Recovery time (Dur25%TOF0.9)
Time between 25% recovery of the initial T1 value and a TOF ratio of 0.9
Time frame: Within the surgical procedure
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