AIMS: To assess the influence of gender on the course of rocuronium-induced neuromuscular block following a single bolus dose of 2 x ED(95) (0.6 mg kg(-1)). METHODS: Following the ethics committee approval and informed consent, 245 patients (121 men, 124 women) scheduled for elective general surgery under TIVA with muscle relaxation were studied. After rocuronium 0.6 mg kg(-1), the onset time for maximal depression of T(1), clinical duration until 25 % recovery and recovery index (T(1) from 25 to 75 %) were determined with TOF-Watch SX accelerometric monitor. The data for male and female groups were compared with appropriate statistical tests (Student's unpaired t-test, Mann-Whitney Rank Sum Test and Fisher's exact test). RESULTS: Men were significantly larger (p < 0.001) and heavier (p < 0.05) than women, but the body mass index was comparable (ns). The onset time was shorter in females [92.5 (SD 14.2) vs. 104.7 (12.2) s, p < 0.0001]. Clinical duration was increased in females [43.1 (7.9) vs. 31.3 (5.5) min; p < 0.0001], while the recovery index was identical in both groups [14.7 (5.0) min in females and 14.8 (4.0) min in males; ns]. CONCLUSIONS: Women are more sensitive than men to the dose 0.6 mg kg(-1) of rocuronium. Under the study conditions described, the onset time was shortened and the clinical duration increased in female patients. This suggests that the routine dose of rocuronium should be reduced in women.

• MeSH
• androstanoly farmakologie   MeSH
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• nedepolarizující myorelaxancia farmakologie   MeSH
• nervosvalová blokáda * MeSH
• nervosvalové spojení fyziologie   MeSH
• nervový přenos účinky léků   MeSH
• pohlavní dimorfismus * MeSH
• rokuronium MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• androstanoly MeSH
• nedepolarizující myorelaxancia MeSH
• rokuronium MeSH

AIMS: To compare the pharmacodynamics of cisatracurium and rocuronium-induced neuromuscular block following single dose, allowing either spontaneous or neostigmine-accelerated complete recovery. METHODS: Following the ethics committee approval and informed consent, 120 patients scheduled for elective surgery under TIVA with tracheal intubation were randomized into 4 groups with different cisatracurium (CIS, 0.10 or 0.15 mg.kg(-1)) or rocuronium (ROC, 0.60 or 0.90 mg.kg(-1)) doses administered. For each patient, the onset time for 95 % depression of T1, clinical duration until 25 % recovery, recovery index (T1 from 25 to 75 %) and time from T1 25 % to TOF-ratio 0.9 were determined allowing either spontaneous or induced recovery. RESULTS: The onset times were 277 (SD 58), 220 (46), 91 (16) and 77 (16) s for the CIS 0.10, CIS 0.15, ROC 0.60 and ROC 0.90 groups (p < 0.05), respectively, with lower variability in both ROC groups (p < 0.05). The clinical durations were 42 (7), 52 (7), 35 (11) and 52 (12) min, respectively (p < 0.05 for lower doses). Recovery index was identical in all groups allowing either spontaneous recovery - 15.9 (1.8), 15.5 (1.7), 16.1 (3.7) and 16.1 (4.0) min, or following neostigmine administration - 4.4 (0.9), 4.5 (0.8), 4.3 (0.8) and 4.7 (0.7) min for respective groups. During spontaneous recovery, the variability of DUR25-TOF90 was twice as great for ROC than CIS groups (p < 0.05), while after neostigmine administration it was uniform in all groups. CONCLUSIONS: For equipotent doses, the onset times for CIS were approximately three times longer than for ROC. The average clinical duration for both relaxants ranged from 35 to 52 min with acceptable variability. Neostigmine administration accelerated the recovery and reduced its variability. When allowing for spontaneous recovery, less scatter was demonstrated for both CIS groups than for ROC ones.

• MeSH
• androstanoly aplikace a dávkování   MeSH
• atrakurium aplikace a dávkování   analogy a deriváty   MeSH
• intravenózní anestezie MeSH
• lidé středního věku MeSH
• lidé MeSH
• nedepolarizující myorelaxancia aplikace a dávkování   MeSH
• nervosvalová blokáda * MeSH
• nervosvalové blokátory aplikace a dávkování   MeSH
• probouzení z anestezie MeSH
• rokuronium MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• randomizované kontrolované studie MeSH
• srovnávací studie MeSH
• Názvy látek
• androstanoly MeSH
• atrakurium MeSH
• cisatracurium MeSH Prohlížeč
• nedepolarizující myorelaxancia MeSH
• nervosvalové blokátory MeSH
• rokuronium MeSH