فیلترها/جستجو در نتایج    

فیلترها

سال

بانک‌ها




گروه تخصصی











متن کامل


اطلاعات دوره: 
  • سال: 

    1385
  • دوره: 

    9
  • شماره: 

    2 (پیاپی 35)
  • صفحات: 

    62-67
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1105
  • دانلود: 

    0
چکیده: 

مقدمه: کلونیدین به عنوان پیش داروی بیهوشی، به دلیل تاثیر در کاهش نیاز به داروهای بیهوشی و آرام بخشی از اهمیت خاصی برخوردار است. اما به دلیل تاثیر آن بر همودینامیک و الکترولیت های بدن و اهمیت آن در بیهوشی، بر آن شدیم تا با انجام مطالعه ای این عوارض را بررسی نماییم.روش کار: این پژوهش یک کارآزمایی بالینی تصادفی و دو سویه کور است که بر روی 106 بیمار20-40  ساله با ASA کلاس I و II تحت عمل جراحی انتخابی با بیهوشی عمومی انجام گرفته است. بیماران به دو گروه مساوی تقسیم شدند. 90 دقیقه قبل از القای بیهوشی، به گروه مورد قرص کلونیدین 5 میکروگرم بر کیلوگرم و به گروه شاهد دارونما داده شد. نمونه خون قبل از تجویز دارو و چهار ساعت پس از آن گرفته شد. ادار 24 ساعته آنها نیز جمع آوری و حجم و میزان سدیم و پتاسیم دفعی اندازه گیری شد. تحلیل آماری با استفاده از جداول و نمودارهای توزیع فراوانی و آزمون تی مستقل انجام شد.نتایج: میانگین سدیم و پتاسیم خون قبل و بعد از دریافت دارو بین دو گروه مورد و شاهد تفاوت معنی داری نداشت. اما میانگین سدیم ادرار 24 ساعته در گروه مورد به طور معنی داری بیشتر بود (p=0.022). میانگین پتاسیم ادرار 24 ساعته نیز در گروه مورد بیشتر بود (p=0.003) هم چنین حجم ادرار 24 ساعته نیز در گروه مورد بیشتر بود (p=0.008).نتیجه گیری: گرچه میزان دفع ادراری سدیم و پتاسیم و حجم ادرار با تجویز کلونیدین افزایش می یابد ولی غلظت خونی این دو الکترولیت تغییر قابل توجهی پیدا نمی کند.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 1105

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
اطلاعات دوره: 
  • سال: 

    2009
  • دوره: 

    19
تعامل: 
  • بازدید: 

    185
  • دانلود: 

    0
چکیده: 

Opioid and cannabinoid receptors have been found both in the hypothalamic regions of brain and in kidneys. Hence, their receptor agonists possibly have pharmacological activity on urine output. In this study, we investigated the effect of intracerebroventricular (i.c.v.) administration of opioid receptor agonist morphine and cannabinoid receptor agonist WIN55212-2 on urine output and water consumption of male rats using metabolic cages. One week after surgery, the animals were transferred into metabolic cages and were kept their individually for4 days. Daily measurement of urine output and water consumption was performed during the test. The first day was considered as control and each group received i.c.v. injection of one dose of either morphine or WIN55212-2 for three consecutive days. Our results showed that i.c.v. administration of morphine at the dose of 200 μg increased urine output in compared to control group. In contrast, i.c.v. administration of WIN55212-2 (10 and 50 μg) significantly decreased urine output compared to control group. However, significant changes in daily water consumption were not observed in any of groups received various doses of either morphine or WIN55212-2 compared to control group. We suggest that pharmacological doses of cannabinoid and opioid agonists can affect urine output through brain regions involved in water homeostasis (such as hypothalamus) and cannabinoid and opioid compounds produced opposite effects in this regard.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 185

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0
نویسندگان: 

Khan Safeer | Mahmood Wajahat

اطلاعات دوره: 
  • سال: 

    2019
  • دوره: 

    18
  • شماره: 

    1
  • صفحات: 

    523-530
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    186
  • دانلود: 

    0
چکیده: 

The role of Pharmacist in making the therapeutic decisions for safe and effective therapy is increasing all over the world. However, there are many aspects of drugs in making these decisions that are less commonly studied such as the correlation of cardiac output with pharmacokinetics of drugs. The cardiac output, besides the other factors, is also affected by drugs like atenolol. Therefore, the objective of the present open labeled study was to know the effect of reduced cardiac output induced by atenolol on its own excretion parameters. After taking the informed consent, five healthy volunteers were selected for the study. Atenolol tablet at a dose of 50 mg, 75 mg and 100 mg for three consecutive days were given to all the volunteers. The echocardiography and renal function clinical tests were conducted prior and 5 h after dosing and the urine samples were collected at 5 and 10 h post dosing. The prepared samples were analyzed for atenolol by High-Performance Liquid chromatography. For comparison of atenolol excretion for three days, One-way repeated measure Analysis of Variance statistical test was used as Wilks’ Lambda = 0. 2, F (2, 3) = 5. 986, p < 0. 1, multivariate partial squared = 0. 8. These results showed that atenolol affects its own pharmacokinetics by prolonging its excretion half-life.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 186

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    52
  • شماره: 

    1
  • صفحات: 

    61-66
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    139
  • دانلود: 

    18
چکیده: 

High gain Balun-low-noise-amplifier (LNA) is proposed for tuner of digital televisions (DTVs). The proposed Balun-LNA is based on CS-CG (common-source-common-gate) structure. To improve the isolasion and frequency response, Balun-LNA has cascode transistors before load resistors. Balun-LNA uses current-bleeding circuit to increasie transconductance of CS transistor, so that current-bleeding transistor has transconductance of N-1 times larger than transconductance of cascode transistor. Thereby, transconductance and current of CS transistor are increased N times, as N-1 times of current pass to current-bleeding transistor. Therefore current of CG and CS stages stay identical. Also, Balun-LNA employs a positive feedback to satisfy input impedance matching and CG transistor has higher transconductance. By increasing transconductance of CS and CG transistors, the proposed Balun-LNA achieves to high voltage gain. Accordingly, CG and CS tansistors have symmetrical currents and loads at the differential output of the proposed Balun-LNA. Symmetrical loads cause the balanced differential outputs. This proposed Balun-LNA is designed in 90-nm CMOS technology and covers the frequency range of 40 MHz to 1GHz. This Balun-LNA achieves the voltage gain of 22.6 dB, S11 of less than -10 dB and the Minimum NF of 5 dB. This Balun-LNA operates at the nominal supply voltage of 2.2v.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 139

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 18 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    2
  • شماره: 

    2
  • صفحات: 

    175-178
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    220
  • دانلود: 

    0
چکیده: 

Background: Remifentanil is a narcotic drug used in anaesthesia for establishment of hemodynamic stability. The purpose of this study was to compare the effects of remifentanil and fentanyl on urine excretion. Methods: In a randomized clinical trial, 60 patients, who were candidates for elective surgery for lumbar posterior spinal fusion, were divided randomly into two groups of 30 as remifentanil – propofol (R) and fentanyl-propofol (F). Maintenance of anaesthesia drugs in group R included 100 mcg/kg/min propofol and 0. 5-0. 25 mcg/kg/min remifentanil. It included 100 mcg/kg/min propofol and 5-0. 5 mcg/kg/min fentanyl in group F. Vital signs and urine output were recorded every half an hour. Results: The mean age of patients was 49. 5± 12. 7 years. Urine output in group R showed significantly greater reduction than in group F (p< 0. 001). Increase of urine output was seen in both groups over the time. Conclusion: Urine output in patients undergoing lumbar posterior spinal fusion who received remifentanil was less compared to the fentanyl group.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 220

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
نویسندگان: 

اطلاعات دوره: 
  • سال: 

    2022
  • دوره: 

    46
  • شماره: 

    7
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    30
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 30

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
نشریه: 

HEPATITIS MONTHLY

اطلاعات دوره: 
  • سال: 

    2013
  • دوره: 

    13
  • شماره: 

    9
  • صفحات: 

    1-7
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    384
  • دانلود: 

    0
چکیده: 

Background: Maintenance of the adequate intraoperative renal perfusion is very important during Orthotopic Liver Transplantation (OLT) to prevent acute renal failure.Objectives: For the first time, this study was designed to survey the effects of octreotide on urine output during anesthesia for OLT and early postoperative renal function.Patients and Methods: In this randomized double-blind placebo controlled clinical trial, 79 of 89 patients who underwent OLT and fulfilled the study requirement were randomly allocated into two groups. In the octreotide group, the patients received octreotide infusion from the start of the operation. On the other hand, the control group patients received physiologic saline infusion instead of octreotide. The Mean Arterial Pressure (MAP), heart rate, urine output, norepinephrine usage, and dosage during the three stages of OLT, and baseline and postoperative creatinine were recorded and compared between the two groups.Results: No significant differences were found between the two groups regarding the demographic characteristics and graft factors (P>0.05). However, urine output and MAP during the three stages of OLT were significantly higher in the octreotide group compared to the control group (P < 0.05). Moreover, no significant difference was observed between the two groups regarding baseline as well as postoperative creatinine (P>0.05).Conclusions: The results demonstrated that octreotide infusion during anesthesia for OLT not only augmented the vasoconstriction effect of norepinephrine to increase MAP, but also maintained better renal perfusion and urine output during the operation.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 384

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
نویسندگان: 

MILADIPOUR A.H. | PARVIN M.

اطلاعات دوره: 
  • سال: 

    2011
  • دوره: 

    5
  • شماره: 

    SUPPLEMENT 2
  • صفحات: 

    50-51
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    261
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

Introduction: Level of sodium (Na) intake has an important effect on blood pressure and cardiovascular disease, and reduction in salt consumption is important as primary prevention of hypertension and cardiovascular disease. Salt intake is estimated by either urine 24-hour sodium excretion or 24-hour dietary recall (which is unreliable). In this study, we evaluated salt intake and correlation of urine Na in spot urine and 24-hour urine collection.Methods: We evaluated 271 male aged 30 to 50 years old for urine Na, creatinine, and chloride in urine 24-hour collection and spot urine. Subjects have no history of DM, HTN, liver disease, renal failure, and they were not on any medication. Formore accuracy, both urine 24-hour and spot urine were collected 2 times in 2 different days.Results: The mean 24-hour urine sodium was 210.30 (79.53%) meq/d. Urine sodium was less than 100meq/d in 13 (4.8%), 100 to 170 meq/d in 84 (31%), 170 to 205 meq/d in 49 (18.1%), 205 to 256 meq/d in 56 (20.7%), and>256 meq/d in 69 (25.5%) of subjects. There is a significant correlation between Na/Cr and Cl/Cr in spot urine and urine 24-hour sodium. Pearson correlation coefficient was 0.268 and 0.198, respectively (that is a weak correlation).Conclusions: Salt intake is high in male and probably general population (>12 g/d). Salt intake is<6 g/d only in 5%, 6 to 10 g/d in 31%, 10 to 12 g/d in 18.1%, 12 to 15 g/d in 20.7%, and>15 g/d in 25.5%. Sodium and chloride in spot urine is not a good predictor for sodium in 24-hour urine.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 261

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
نشریه: 

NEPHRO-UROLOGY MONTHLY

اطلاعات دوره: 
  • سال: 

    2022
  • دوره: 

    14
  • شماره: 

    1
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    241
  • دانلود: 

    0
چکیده: 

Context: Delayed graft function (DGF) is an important clinical outcome following renal transplantation; therefore, it is important to be correctly diagnosed. The DGF is thought to correlate with the fi rst 24-hour urine output (UOP1), and this clinical sign is expected to predict DGF. Objectives: This study aimed to discover whether the UOP1 correlates signifi cantly to the DGF incidence and can be a DGF predicting factor. Data Sources: This study compared the incidence of DGF with the UOP1 reported by studies obtained from the electronic databases, namely MEDLINE, Cochrane, and EBSCO. Studies that performed multivariate or bivariate analysis and/or reported sensitivity and specifi city were included in this review. Results: A total of 1719 studies were obtained from the database search, and 2 studies were enrolled from other sources. Out of 1721 studies, 9 studies were recruited in this review, 5 of which reported sensitivity and specifi city. Overall, nine of these studies had a low to moderate risk of bias. Almost all studies reported a signifi cant relationship between the UOP1 and DGF. All studies agreed that the UOP1 is a sensitive predictive factor in predicting DGF. The specifi city reported by the studies examined in this review varied greatly. The use of optimum cut-off in each study is considered to be the cause of this variability. Conclusions: The UOP1 is signifi cantly related to the incidence of DGF and is a proper parameter for the prediction of DGF events.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 241

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
نویسندگان: 

ZARGARIZADEH A. | RAZAGHI M.R.

اطلاعات دوره: 
  • سال: 

    2002
  • دوره: 

    7
  • شماره: 

    3 (29)
  • صفحات: 

    245-250
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    270
  • دانلود: 

    0
چکیده: 

Background: Staphylococcous-related urinary tract infection is a common problem. Antibiotic resistance has been reported hereby, for which incomplete recovery has occurred. The present study was conducted in 3 university hospitals in Shaheed Beheshti University of Medical Sciences to determine the type of staphylococcous ssp and their related sensitivity to antimicrobial agents. Materials and methods: 467 patients referred consecutively for UTI, were included in this descriptive study. Our inclusion criteria were: positive urine culture for staphylococcous ssp and antibiogram results. To determine drug resistance, isolated staphylococcous ssp were exposed to 17 different antibiotics by disc diffusion technique. Results: Of 467 positive urine cultures, coagulase-negative staphylococcous was found in 77% and S. aureus in 23%. Staphylococcous ssp have shown a complete resistance to penicillin and amoxicillin. Cloxacillin and vancomycin have shown the highest and the lowest sensitivity (100% and 20%, respectively). Conclusion: With respect to the varied antimicrobial resistance, antibiogram seems to be of utmost importance. Thus, misprescription would be ceased and better therapeutic outcomes will achieve.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 270

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 0
litScript
telegram sharing button
whatsapp sharing button
linkedin sharing button
twitter sharing button
email sharing button
email sharing button
email sharing button
sharethis sharing button