Papers by Mohamed Abdelshafy
The Egyptian Journal of Surgery /The Egyptian Journal of Surgery, Jul 1, 2024
Research Square (Research Square), Dec 21, 2023
Background Pregnancy is associated with a higher risk of common bile duct stones. Currently Endos... more Background Pregnancy is associated with a higher risk of common bile duct stones. Currently Endoscopic Retrograde Cholangiopancreatography (ERCP) is the treatment of choice for symptomatic choledocholithiasis. However, ERCP during pregnancy is associated with hazards of radiation exposure, as well as challenging patient positioning and anesthesia.
the egyptian journal of surgery, Sep 30, 2023
SVU - International Journal of Medical Sciences (Online), Jul 1, 2023
International Journal of Surgery Open
The Egyptian Journal of Hospital Medicine, 2019
Aim of the work: study was done to compare the benefits and risks for patients doing insertion of... more Aim of the work: study was done to compare the benefits and risks for patients doing insertion of penile prostheses for treatment of erectile dysfunction by two different approaches (sub-coronal and penoscrotal) and to try discover the most suitable one. Patients and Methods: a total of 24 patients were included in this study that had all complaining from sever erectile dysfunction. All patients were subjected to pre as well as post-operative fixed assessment. International Index of Erectile Function (IIEF), Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS). Patients were classified into two groups according to the approach of implantation. Procedure was done for every individual patient. Analysis of the final results was done to compare the different procedures and evaluate them individually and comparatively in an effort to categorize the overall benefit of each procedure. Results: each of the two test groups showed a significant improvement and satisfaction of complaining, as well as a significant difference between the two groups as regard(EDITS) (p-value <0.005). Conclusion: In general, management of erectile dysfunction had a strong impact on the quality of life of the patients especially who underwent the penile prostheses implantation, most significantly affecting their "selfesteem", the penoscrotal approach was more suitable for semi-rigid penile prostheses than subcoronal one.
Zagazig University Medical Journal, 2018
Objective: Controversy still exists whether adequacy ofpreoperative diabetes control measured by ... more Objective: Controversy still exists whether adequacy ofpreoperative diabetes control measured by HbA1c% is a predictor of elevated incidence of surgical site infection (SSI) after CABG. Methods:prospective study was done on 48 diabetic patients underwent CABG surgery. They were classified into 2 groups, Group (A):24 patients with fair glycemic control (HbA1c isunder or equal to 7%), Group (B): 24 patients with poor glycemic control (HbA1c above 7%). SSI either sternotomy or saphenous wound infection were studied in both groups. Results: Superficial wound infection for group A was 12.5% and 25% for group B with significant statistical differenceamong the two groups. Deep Sternal Wound Infection (DSWI) was (4.1%) group A and group B with no statistical significance.As regard Saphenous wound infection was (8.3%) for groupA and (25%) for group B with statistical difference, also group B has higher frequency of hospital readmission and need inotropes more than groupA. Conclusions: Elevated HbA1c >7 in patients undergoing CABG associated with increasedfrequency of SWI and saphenous harvesting site infection but there was no significant increase in DSWI.Patients with elevated HbA1c >7 has more resistant peri-operative control of RBS. Finally we found that good peri-operative control of RBS associated with decreased rate of SSI after CABG. HbA1c is simple test that may offer the surgeon with better risk profile assessment and give additional prognostic data when discussing morbidity and mortality risks with patients and their relatives.
Journal of the Egyptian Society of Cardio-Thoracic Surgery, 2018
Background: Early diagnosis and management of traumatic diaphragmatic hernia (TDH) can be challen... more Background: Early diagnosis and management of traumatic diaphragmatic hernia (TDH) can be challenging for the emergency department or the trauma surgeon, as these injuries are often clinically masked by other associated severe injuries. Methods: We retrospectively reviewed data of 50 patients diagnosed with an acute traumatic hernia from September 2014 to September 2017. Results: 50 patients were included in this study. Blunt trauma was the main cause in 40 patients (80%) patients. TDH occurred more on the left side; in 72% of patients. The diagnosis was preoperative in 20 patients (40%). In our study, 74% of cases were repaired through abdominal approach and 26% patients through thoracic approach. Complications of TDH occurred in 30 patients (60%) and were mainly pneumonia in 16 patients (32%), only 8 patients (16%) died (6 patients of them had delayed referral and 3 patients of them had severe head injury). Conclusions: TDH may be masked by associated injuries in multiple trauma patients and may lead to life-threatening intestinal and gastric strangulation. So, early diagnosis and treatment of TDH are important. Emergency physicians and trauma surgeon should maintain a high index of suspicion of TDH while dealing with patients assessed for abdominal or respiratory symptoms regardless the history of trauma was recent or delayed.
Journal of the Egyptian Society of Cardio-Thoracic Surgery, 2017
Background: In advanced cancer esophagus patients, self-expandable metallic stents (SEMS) are uti... more Background: In advanced cancer esophagus patients, self-expandable metallic stents (SEMS) are utilized to relieve malignant difficulty in swallowing and improve their quality of the life. Retrospectively, we evaluated the efficacy, feasibility, and outcomes of SEMS in palliation of malignant dysphagia in advanced cancer esophagus and its' complications. Methods: We retrospectively reviewed data of 350 patients with malignant dysphagia due to advanced cancer esophagus from December 2012 to April 2017. They were subjected to esophageal stenting with SEMS in our GIT endoscopy unit, General and Cardiothoracic Surgery departments at Qena and Sohag University Hospitals, Egypt. Results: The mean age was 56.34 þ 12.44 years ranging from 30 to 85 years, and 264 of them were males. Mean duration of dysphagia was 2.90 months. SEMSs were placed successfully in all cases without major complications; however minor bleeding and retrosternal discomfort were seen. The improvement in the dysphagia score was significant. Conclusions: SEMSs were safe and effective in palliation of malignant dysphagia and improvement of the quality of life in advanced esophageal cancer patients without major complications.
Clinical Medicine Insights: Cardiology, 2017
Background: The prevalence of hepatitis C virus (HCV) in Egypt is quite high, and the combined or... more Background: The prevalence of hepatitis C virus (HCV) in Egypt is quite high, and the combined oral direct-acting antiviral agents (DAAs) may have impressive results. Objective: To assess the cardiovascular effects of DAAs in patients with HCV. Methods: A total of 170 patients with HCV were divided into 2 groups: first group (100 patients) received triple combination therapy (pegylated interferon alfa, sofosbuvir, and ribavirin, whereas the second group (70 patients) received dual combination therapy (sofosbuvir and simeprevir). Group 1 patients were followed up for 1 year more than 3 visits, whereas group 2 patients were followed up for 6 months more than 2 visits; and the end point of the study was the development of a major cardiovascular event (eg, congestive heart failure, echocardiographic evidence of left ventricular dysfunction, occurrence of significant arrhythmias, or acute coronary syndrome). The following parameters were accomplished: medical history and clinical examina...
OALib, 2016
Introduction: Laparoscopic appendicectomy has gained popularity due to the advantages of minimal-... more Introduction: Laparoscopic appendicectomy has gained popularity due to the advantages of minimal-access surgery. Inadequate closure of the appendix stump leads to intra-abdominal surgical site infection or even fecal fistula. The base of the appendix can be secured with endostapler, endoloops, metallic clips or intracorporeal ligature. Aim: To evaluate the handmade extra-corporeal loop versus endoclip in securing the base of the appendix in non-complicated acute appendicitis. Methods: During the period from April 2014 to February 2016, in South Valley University, Aswan University and Sohag University hospitals (these are tertiary hospitals), 400 laparoscopic appendicectomy patients were included in this prospective study. In total, 240 patients were female and the overall average age was 25.6 years old. Patients were divided into two equal groups (group L and group C): in group L, handmade extracorporeal loop was used to secure the base of the appendix, the metallic clip was used in group C. Results: The mean operative time was 49 min in group L and 35.4 min in group C (P < 0.05). The mean hospital stay was 2.07 days in group L and 2 days in group C, and this was not significant (P > 0.05). Complications varied between portsite wound infection and delayed intestinal sounds, fecal fistula and there were no statistically significant differences. Conclusion: Using extracorporeal handmade loop or the metallic clips to secure the appendicular stump is safe, feasible, easy and inexpensive methods. The loop takes a little more time in its preparation. Metallic clips are inappropriate for edematous wide base appendix.
In this paper, we analyze some well-known key establishment protocols for Wireless Local Area Net... more In this paper, we analyze some well-known key establishment protocols for Wireless Local Area Networks (WLANs). The protocols are examined with respect to their security, timing analysis, advantages and disadvantages. Based on this analysis, we propose modifications to overcome the weaknesses of any of these protocols. Two types of analysis are used: formal analysis, based on the logic of authentication, and the simulation analysis.
African Journal of Urology, 2008
Urology Annals, 2013
The aim of this study is to evaluate the role of ureteric stents in relieving obstruction and imp... more The aim of this study is to evaluate the role of ureteric stents in relieving obstruction and improvement of kidney function in patients with obstructive uropathy. Materials and Methods: This study involved 138 patients with obstructive uropathy with age ranged from 2 months to 73 years. Patients classified into two groups: Group (I): Includes 57 patients (41.3%), ureteric stents fixed to them; and Group (II): Includes 81 patients (58.6%) managed by other treatment modalities. All patients underwent clinical assessment, Laboratory and radiologic investigations: At presentation and postoperative. These included: Complete urine analysis, urine culture and sensitivity, serum creatinine, serum urea nitrogen, serum uric acid, serum sodium (Na), serum potassium (K), Fasting blood glucose level and blood picture and plain X-ray (KUB), abdominal ultrasonography (US), diuretic renography and retrograde pyelography. Results: Renal glomerular filtration rate (GFR) was used as an indicator for improvement of renal function after fixation of ureteric stent. In group I: 56 (71.8%) kidneys showed significant recovery compared to 61 kidneys (66.3%). In group II, there is statistically significant relation between renal perfusion and renal recovery (P < 0.004), statistically significant relation between parenchymal thickness and recovery in both groups (P < 0.0002), statistically significant relation between degree of corticomedullary differentiation and recovery (P < 0.0003) and statistically significant relationship between hemoglobin levels at presentation and the recoverability (P < 0.002). Conclusion: The predictors of renal recoverability revealed that ureteral stents alone can help in regaining renal function and significant improvement of clinical condition in patients with obstructive uropathy.
Research in Oncology, 2013
Breast cancer is the most common neoplasm in women, accounting for 26 % of all cancers diagnosed ... more Breast cancer is the most common neoplasm in women, accounting for 26 % of all cancers diagnosed annually, it is overall the second leading cause of cancer death (following lung cancer). In Egypt breast cancer constitutes 33 % of all female cancer and the median age is 46 years old, one decade younger than corresponding western countries. The incidence of breast cancer is highest among women of higher socioeconomic background. Also the incidence is higher among whites less common in black women. Most cancer patients are diagnosed sporadic and not associated with any clear familial predisposition 1. Breast cancer is not a single entity but instead comprises several biologically distinct subtypes. Based on molecular profiles, breast cancers have been classified into four main subtypes: luminal subtype A, luminal subtype B, ERbB2 positive receptors (HER2 positive/ER negative) and TNBC 2,3,4. Triple-negative breast cancer (TNBC) is defined as a clinical entity referring to tumors that do not express estrogen receptor (ER), progesterone receptor (PR), or human epidermal growth factor receptor 2 (HER2) accounting for approximately 15%-20% 5,6 of breast cancers. TNBC has important clinical implications, because it is typically high grade, and exhibits a high rate of proliferation 7,8. In general, compared with other subtypes of breast cancer, TNBC has a less favorable clinical outcome in terms of the nature and likelihood of
يتناول هذا البحث نظرية أصولية وهي نظرية الإباحة، والإباحة كما عدها أكثر العلماء من الأحكام التكلي... more يتناول هذا البحث نظرية أصولية وهي نظرية الإباحة، والإباحة كما عدها أكثر العلماء من الأحكام التكليفية وبها مسائل كثيرة تكلم فيها العلماء إجمالاً، وللفائدة رأى الباحثُ أن يقارن بين مفهوم الإباحة عند إمامين كبيرين من أئمة أصول الفقه، وهما الغزالي والشاطبى- رحمهما الله تعالي- من حيث التعريف، والأنواع، وأوجه التشابه، والافتراق عند كل منهما، وقد سلك الباحثُ المنهجَ الاستقرائي، وذلك بجمع المادة العلمية الخاصة بالإباحة عند الغزالي والشاطبي، كما استخدم المنهج التحليلى بعرضه المادة العلمية مع شرح القضية العلمية بتحليل النصوص، والاستفادة من هذه النصوص لاستنباط ماهية الإباحة عند الإماميْن، وأوجه التشابه، والافتراق بينهما. وأتبع الباحثُ بحثَه بعدة نتائج وتوصيات، ومن أهم النتائج أن الغزالي قسم المباح إلى ثلاثة أقسام، بينما قسمه الشاطبي إلى أربعة أقسام - باعتبارات مختلفة- أبرزها التقسيم بحسب النية وهو قسم جديد أحسب أنه لم يسبقه إليه أحد، ومن أهم التوصيات- وهي وصية عامة لعموم المكلفين- كيفية الاستفادة من المباحات فى الحياة الدنيا، فهي بالنية تعد قسماً من أقسام الحكم التكليفى الذي يثاب المرء عليه.
2017 IEEE 13th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), 2017
The route recovery algorithm is a crucial part of an ad hoc routing protocol. Designing an effici... more The route recovery algorithm is a crucial part of an ad hoc routing protocol. Designing an efficient and fast route recovery mechanism scheme without incurring extra overheads or delays to repair the broken link is a desirable goal for any routing protocol. The route recovery algorithm in reactive routing protocols like AODV occurs only after a link failure is detected. However, we propose a new route discovery mechanism called Route Migration over Multiple link failure in Multi-Channel (RMMMC), which combines multiple paths and channels to provide a disjointed alternative route. When link failure is detected, the RMMMC reroutes the data packet through the alternative route in alternative channels that have been previously discovered. Furthermore, the RMMMC is resilient to multiple link failures. Unlike other route recovery approaches, nodes in RMMMC are considered to be equipped with a single transceiver. The RMMMC scheme is implemented and extensively evaluated by using an ns-2 simulator. Simulation results show that the proposed scheme achieves a better packet delivery ratio and throughout in a dense network.
2018 International Symposium on Networks, Computers and Communications (ISNCC), 2018
Utilising multiple disjoint paths in multiple channels can improve network performance by enablin... more Utilising multiple disjoint paths in multiple channels can improve network performance by enabling a node to reroute data along discovered paths seamlessly when link failure is detected. However, depending on a stale/invalid route to recover from a broken link could increase the delay to recover from the broken link and degrade the network performance. In this paper, we propose a new MAC protocol (RIVC-MB) to enhance communication reliability in the multipath multichannel routing protocol. The reliability of transmitting/re-routing the data packet in multipath multichannel routing protocol is improved by providing early route invalidity detection and early switchover. Waiting time to access the medium is also improved, when a node is attempting to access a busy medium, by re-routing the data packet via the alternative route. The RIVC-MB protocol uses the cross-layer interaction between MAC and routing protocols to achieve these goals. The proposed protocol is implemented and extensi...
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Papers by Mohamed Abdelshafy