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Search Results: 1 - 10 of 381 matches for " Abdollah Razi "
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Comparison between the Holmium Laser (Made in Iran) and Pneumatic Lithotripsy in Patients Suffering from Upper Ureteral Stone between 1-2cm
Mohammad Reza Razaghi,Abdollah Razi
Journal of Lasers in Medical Sciences , 2012,
Abstract: INTRODUCTION: The aim of this study is to compare holmium laser (LL) with pneumatic lithoclast (PL) in patients with upper ureteral stones and their ability to destruct the stones and making the patient stone free. We also compare the duration of these procedures and their complications, such as urosepsis, perforation, and pushing the stone backward. METHODS: This has been a clinical randomized trail study in 26 patients with upper ureteral stone more than 1 cm. Patients were divided into 2 randomized groups, each treated with one of the following approaches: pneumatic lithoclast(14 patients), or holmium laser(12 patients). The goal of lithotripsy was to break the stone into particles less than 3 mm. IVP (Intravenous Pyelogram) was performed 4 weeks after. RESULTS: The immediate stone free rate was 100% in LL group and 42.9% in PL group (P=0.001). Stone pushing back was 0% in LL group and 57.1% in PL group. Complications such as a perforation, or urosepsis, or bleeding were not seen in any of these groups. Fever more than 38o C was observed in 1.8% in LL, and 3.8% in PL group (p=0.56). After 4 weeks no complication was seen in IVP. CONCLUSION: According to our experience, for upper ureteral stones larger than 1 cm, lithotripsy with holmium laser is preferred approach with high success rate and low complication.
Delayed Retropubic Urethroplasty of Completely Transected Urethra Associated With Pelvic Fracture in Girls
Jalil Hosseini,,Kamyar Tavakkoli Tabassi,Abdollah Razi
Urology Journal , 2009,
Abstract: Introduction: The objective of the present study was to evaluate the results and the complications of delayed retropubic urethroplasty of completely transected urethra associated with pelvic fracture in girls. Materials and Methods: From 2002 to 2008, a total of 7 girls with complete urethral disruption after pelvic fracture were referred to our center and all of them underwent delayed retropubic urethroplasty with end-to-end anastomosis of the urethra. Results: Seven female patients with a median age of 6 years old underwent delayed end-to-end anastomosis. The median time to surgery was 6 months from the trauma. Voiding was normal after catheter removal in all of the patients. The median follow-up was 36 months. Three patients had mild stress urinary incontinence after catheter removal. Conclusion: There are some different strategies for management of complete urethral avulsion in females who have sustained pelvic fracture, including early realignment, bladder flaps, and end-to-end anastomosis. The strategy of delayed end-to-end anastomosis urethroplasty with retropubic approach is sound and produces acceptable results. The use of flexible cystoscope and omental flap is effective in achieving continence after urethroplasty in such cases.
Safety and Efficacy of Pneumatic Lithotripters Versus Holmium Laser in Management of Ureteral Calculi: A Randomized Clinical Trial
Mohammad Reza Razzaghi,Abdollah Razi,Mohammad Mohsen Mazloomfard,Amin GolmohammadiTaklimi
Urology Journal , 2013,
Abstract: PURPOSE: To compare efficacy and safety of holmium:YAG laser and pneumatic lithotripter in the management of ureteral stones.MATERIALS AND METHODS:One hundred and twelve patients with 1 to 2 cm ureteral calculi were selected for pneumatic or holmium:YAG laser transurethral ureterolithotripsy (56 patients in each group). Ultrasonography and plain abdominal x-ray were performed for all the patients before the operation. The pneumatic lithoclast was Swiss LithoClast, while in laser lithotripsy, holmium:YAG laser frequency was used, which was usually set between 5 and 10 Hz at a power of 10 to 15 Watt. Intravenous urography was performed for all the patients at 3 months to assess functional status and to delineate the ureteral anatomy.RESULTS: The mean patients’ age and stones’ size were the same in both groups, and there were no statistical differences. Mean duration of lithotripsy was 13.7 ± 12.6 minutes in laser group and 7.9 ± 4.2 minutes in pneumatic lithotripsy group. Immediate stone-free rate was 100% and 82.1% in the laser and pneumatic groups, respectively (P = .001). Stone pushing back occurred only in 10 (17.9%) patients in pneumatic group. In terms of complications, such as perforation, mucosal injury, and bleeding, there were no differences between the two groups. No intravenous pyelography related complication was seen at 3-month follow-up.CONCLUSION:Laser lithotripsy is a superior approach for the management of upper ureteral stones of 1 to 2 cm in size due to its higher rate of stone clearance.
Trans-Ureteral Ureterolithotripsy of Ureteral Calculi:Which is the Best; Pneumatic or Holmium Laser Technique?
Mohammad Reza Razzaghi,Abdollah Razi,Mohammad Mohsen Mazloomfard,Hooman Mokhtarpour
Journal of Lasers in Medical Sciences , 2011,
Abstract: INTRODUCTION: Our aim was compare of two types of lithotripter include holmium: YAG laser and pneumatic one in transurethral ureterolithotripsy (TUL) for the management of ureteral calculi ≥1 cm. METHODS: 112 patients with ureteral calculi more than 1 cm were selected in randomized order for pneumatic or holmium: YAG laser transurethral ureterolithotripsy (56 patients in each group). Ultrasonography and intravenous urography were performed for all patients before surgery. Complete clearance and success was defined as the absence of any fragments on post operation KUB and ultrasonography images. RESULTS: Success rate was 85.7% in pneumatic group and 100% in holmium: YAG laser group (p =0.003). Stone migration up in the pelvicalyceal system was observed only in 8 cases of pneumatic group. No statically differences were observed in terms of patient’s age, hospital stay, and complications between two groups. CONCLUSION: According to our experience, for ureteral stone larger than 1 Cm treatment with ureteroscopy and laser lithotripsy is a preferring approach with favorable operation time and hospital admission, and no more significant complication.
Epitheliod Leiomyoma of the Bladder: An Unusual Case of Irritative and Obstructive Voiding Symptoms
Ali Kaviani,Abdollah Razi,Hooman Mokhtarpour,Mohammad Mohsen Mazloomfard,Aida Moeini,Hooman Bahrami-Motlagh
Case Reports in Urology , 2012, DOI: 10.1155/2012/759150
Abstract: Epitheloid leiomyoma is a very rare subtype of benign mesothelial tumors of the bladder. A 46-year-old female patient presented to our hospital with prolonged dysuria, frequency, and recurrent urinary tract infections. Bimanual examination revealed a mobile, round mass in bladder. There was a round hyperdense intravesical mass near bladder neck in computed tomography (CT) scan that was compatible with her magnetic resonance imaging (MRI). A well defined 3×4 centimeter mass was seen in superolateral part of bladder neck during cystoscopy. The patient underwent partial cystectomy and histopathologic findings confirmed the diagnosis of epithelioid leiomyoma. The patient’s followup was uneventful in a period of 2 years. Size and anatomic location of this tumor were major factors that affect on treatment.
Epitheliod Leiomyoma of the Bladder: An Unusual Case of Irritative and Obstructive Voiding Symptoms
Ali Kaviani,Abdollah Razi,Hooman Mokhtarpour,Mohammad Mohsen Mazloomfard,Aida Moeini,Hooman Bahrami-Motlagh
Case Reports in Urology , 2012, DOI: 10.1155/2012/759150
Abstract: Epitheloid leiomyoma is a very rare subtype of benign mesothelial tumors of the bladder. A 46-year-old female patient presented to our hospital with prolonged dysuria, frequency, and recurrent urinary tract infections. Bimanual examination revealed a mobile, round mass in bladder. There was a round hyperdense intravesical mass near bladder neck in computed tomography (CT) scan that was compatible with her magnetic resonance imaging (MRI). A well defined centimeter mass was seen in superolateral part of bladder neck during cystoscopy. The patient underwent partial cystectomy and histopathologic findings confirmed the diagnosis of epithelioid leiomyoma. The patient’s followup was uneventful in a period of 2 years. Size and anatomic location of this tumor were major factors that affect on treatment. 1. Introduction Benign mesothelial tumors are rare cause of bladder neoplasms [1, 2]. Leiomyoma as a benign mesothelial tumor consists of four different subtypes and its epitheloid subtype is a very rare ones. This benign disorder results in irritative and obstructive urinary symptoms or hematuria [3–5]. We report a case of bladder epitheloid leiomyoma presenting with irritative symptoms and cystoscopic appearance of a well-defined mass in bladder which is a rare finding even in uterus [6]. 2. Case Report A 46-years-old woman presented to our hospital with complaining of dysuria, frequency, and recurrent urinary tract infections from one year ago. She had no hematuria, suprapubic pain, or family history of such problems. She had history of hysterectomy three years before this admission due to uterine leiomyoma. Physical examination revealed a mobile, round mass in bimanual examination. Abdominal ultrasonography revealed a round mass measuring 4 × 5?cm (Figure 1). There was no hydronephrosis in both kidneys. There was a round hyperdense intravesical mass near bladder neck in CT scan (Figure 2). The mass was intramural in MR imaging and showed intermediate signal intensity on T1-weighted images (Figure 3). A well defined 3 × 4 centimeter mass was seen in superolateral part of bladder neck during cystoscopy. There was no any involvement of ureteral orifices. Due to huge size of the mass and its proximity to ureteral orifice, trans-urethral bladder resection was not planned for patient. Figure 1: A heteroechoic round mass was revealed in ultrasonography. Figure 2: An intravesical mass near bladder neck with hyperdensity in CT scan of patient. Figure 3: A well-defined 3 × 4 centimeter intramural mass was shown in MRI. She underwent exploratory laparotomy with low
The Study of Factors Affecting the Creation of Cognition Based on Power-Knowledge Point of View  [PDF]
Abdollah Rasekhi
Open Journal of Philosophy (OJPP) , 2016, DOI: 10.4236/ojpp.2016.61004
Abstract: Various factors are influencing the creation of cognition so that “Mannheim” refers to economic interests and the insight of groups and social classes, “Weber” to the economic system and the in- terests, and also “Foucault” in his theory of power-knowledge refers to the power. Among the above factors, the power can have the greatest influence on the creation of cognition. So for “Foucault”, the power can lead to the development of knowledge through structures, institutions and discourses. On the other hand, the knowledge as a complement to the power can maintain and expand this latter. But it should be noted that the Knowledge itself can also cause cognition in people by giving them awareness and understanding about things. It seems therefore that cognition is also affected by Power. In this article, we will try to assess a cognition created by the correlations of Power and in the meantime try to learn about other factors that influence the creation of cognition. Hence, this article can help considerably to revise the foundations of Epistemology, as well as to present the specifications of the probable future ideas all in reviewing and reconstructing the sociology routes and appropriate use of present and past experiences and cognitive capacities.
Intelligent Transportation Systems Using Short Range Wireless Technologies  [PDF]
Razi Iqbal, Kenichi Yukimatsu
Journal of Transportation Technologies (JTTs) , 2011, DOI: 10.4236/jtts.2011.14017
Abstract: In this paper, we propose using ZigBee for Intelligent Transportation System (ITS). Most of the accidents these days are caused because of drivers not knowing the upcoming traffic hurdles like curves, traffic signals, railway lines and etc. If drivers come to know about the upcoming signals, curves, and railways lines etc the accidents can be avoided. The aim is to provide drivers with intelligent roads so that they can receive the information about the curves and the traffic signals ahead. After receiving the information about the signals ahead, drivers will be careful; this will help avoid the road accidents. Many researches are taking place in the world in the field of ITS and many useful systems are also built but no system is built using this remarkable ZigBee technology. ZigBee is low cost as compared to other short range wireless technologies which will help reduce the total cost of the system, enabling this system to be deployed in developing countries as well.
The Effect of Price Discount on Time-Cost Trade-off Problem Using Genetic Algorithm  [PDF]
Hadi Mokhtari, Abdollah Aghaie
Engineering (ENG) , 2009, DOI: 10.4236/eng.2009.11005
Abstract: Time-cost trade off problem (TCTP), known in the literature as project crashing problem (PCP) and project speeding up problem (PSP) is a part of project management in planning phase. In this problem, determining the optimal levels of activity durations and activity costs which satisfy the project goal(s), leads to a balance between the project completion time and the project total cost. A large amount of literature has studied this problem under various behavior of cost function. But, in all of them, influence of discount has not been in-vestigated. Hence, in this paper, TCTP would be studied considering the influence of discount on the re-source price, using genetic algorithm (GA). The performance of proposed idea has been tested on a medium scale test problem and several computational experiments have been conducted to investigate the appropriate levels of proposed GA considering accuracy and computational time.
General Solution of Generalized (2+1)–Dimensional Kadomtsev-Petviashvili (KP) Equation by Using the –Expansion Method  [PDF]
Abdollah Borhanifar, Reza Abazari
American Journal of Computational Mathematics (AJCM) , 2011, DOI: 10.4236/ajcm.2011.14025
Abstract: In this work, the (G,/G)- --expansion method is proposed for constructing more general exact solutions of the (2 + 1)--dimensional Kadomtsev-Petviashvili (KP) equation and its generalized forms. Our work is motivated by the fact that the (G,/G)---expansion method provides not only more general forms of solutions but also periodic and solitary waves. If we set the parameters in the obtained wider set of solutions as special values, then some previously known solutions can be recovered. The method appears to be easier and faster by means of a symbolic computation system.
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