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Effects of oral melatonin and gabapentin on tube placement in trachea for anaesthesia in patient posted for surgery

ABSTRACT: Intervention1: Oral study drugs 120 min before induction of anaesthesia: To study Haemodynamic responses to both drugs Control Intervention1: Tablet Gabapentin: Oral Gabapentin 800 mg in study group will be given 120 min before induction of anaesthesia in double blind manner. Placebo tablets 120 min before induction of anaesthesia in control group Control Intervention2: Tab Melatonin: Tab melatonin 6 mg orally 120 min before induction of anaesthesia Primary outcome(s): SBP,DBP,MAP,HRTimepoint: Just after intubation,1min,3min,5min,10min Study Design: Randomized, Parallel Group, Placebo Controlled Trial Method of generating randomization sequence:Computer generated randomization Method of allocation concealment:Sequentially numbered, sealed, opaque envelopes Blinding and masking:Participant, Investigator and Outcome Assessor Blinded

DISEASE(S): Calculus Of Gallbladder With Othercholecystitis,Calculus Of Kidney,Malignant Neoplasm Of Breast,Liver Disorders In Diseases Classified Elsewhere,Other Abdominal Hernia,Malignant Neoplasm Of Intestinal Tract, Part Unspecified,Asa Grade I And Ii, Normal Healthy Patient Posted For Elective Surgery,Perforation Of Intestine (nontraumatic)

PROVIDER: 2589334 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:Brown1997 - Plasma Melatonin Levels A mathematical model that incorporates a piecewise function for NAT activity to predict melatonin concentration. This model is described in the article: A mathematical model of diurnal variations in human plasma melatonin levels. Brown EN, Choe Y, Shanahan TL, Czeisler CA. Am. J. Physiol. 1997 Mar; 272(3 Pt 1): E506-16 Abstract: Studies in animals and humans suggest that the diurnal pattern in plasma melatonin levels is due to the hormone's rates of synthesis, circulatory infusion and clearance, circadian control of synthesis onset and offset, environmental lighting conditions, and error in the melatonin immunoassay. A two-dimensional linear differential equation model of the hormone is formulated and is used to analyze plasma melatonin levels in 18 normal healthy male subjects during a constant routine. Recently developed Bayesian statistical procedures are used to incorporate correctly the magnitude of the immunoassay error into the analysis. The estimated parameters [median (range)] were clearance half-life of 23.67 (14.79-59.93) min, synthesis onset time of 2206 (1940-0029), synthesis offset time of 0621 (0246-0817), and maximum N-acetyltransferase activity of 7.17(2.34-17.93) pmol x l(-1) x min(-1). All were in good agreement with values from previous reports. The difference between synthesis offset time and the phase of the core temperature minimum was 1 h 15 min (-4 h 38 min-2 h 43 min). The correlation between synthesis onset and the dim light melatonin onset was 0.93. Our model provides a more physiologically plausible estimate of the melatonin synthesis onset time than that given by the dim light melatonin onset and the first reliable means of estimating the phase of synthesis offset. Our analysis shows that the circadian and pharmacokinetics parameters of melatonin can be reliably estimated from a single model. This model is hosted on BioModels Database and identified by: BIOMD0000000672. To cite BioModels Database, please use: Chelliah V et al. BioModels: ten-year anniversary. Nucl. Acids Res. 2015, 43(Database issue):D542-8. To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information.

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Effects of oral melatonin and gabapentin on tube placement in trachea for anaesthesia in patient posted for surgery

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