Publications by authors named "Mohamed E. Ahmed"

Purpose: Perioperative blood transfusion has been reported in > 50% of patients undergoing radical cystectomy (RC). Unfortunately, perioperative blood transfusion (PBT) in patients undergoing RC has been associated with poor oncological outcomes. Tranexamic acid (TXA) use has been proposed to decrease the need for PBT.

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Objective: To define the natural history, patterns of recurrence and treatment modalities for local prostate cancer (PCa) recurrence following radical prostatectomy (RP) and radiation therapy (RT), and to investigate factors that could predict metastasis-free survival (MFS) in this unique patient population.

Methods: We queried a prospectively maintained PCa registry to identify men developing in-field recurrence (IFR) following RP and RT from 2008 to 2021 at a single institution. IFR was defined as biopsy-proven recurrent PCa or the presence of persistent positron emission tomography-avid lesions in the prior radiation field without evidence of metastasis.

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Introduction: Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease that is associated with many complications if untreated. Guidelines, including those from the American Diabetes Association (ADA), are published regularly to enhance the management of diabetes in all aspects of care including regular screening of diabetic complications and encouraging the use of newer medications such as sodium-glucose cotransporter 2 inhibitors (SGLT2i) and glucagon-like peptide 1 receptor agonists (GLP-1a). This study aims to assess the adherence to ADA guidelines at a tertiary care center in Saudi Arabia.

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Background: Postoperative fluid and electrolyte management is crucial for adequate patients' recovery and healing. This audit aimed to assess the current practice of postoperative intravenous fluids (IV) and electrolyte administration and investigate postoperative electrolyte disturbances.

Method: This study was conducted at Soba Teaching Hospital and comprised two cycles, it examined adult patients who underwent abdominal surgery and were exclusively on postoperative intravenous fluid therapy for at least one day.

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Background: Total knee arthroplasty (TKA) is an orthopedic procedure performed on patients with severe knee pain and advanced knee conditions, such as osteoarthritis and rheumatoid arthritis, in order to restore joint function. Despite the procedure's high success rates, persistent postoperative pain (PPP) remains a significant complication, affecting a substantial proportion of patients. Identifying predictors of PPP is crucial for improving patient outcomes and satisfaction.

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  • Encephalitis, meningitis, and meningoencephalitis pose major clinical challenges due to their varied causes and serious complications, necessitating a high suspicion index for effective treatment.
  • The study conducted at King Abdulaziz Medical City in Jeddah analyzed data from 233 patients, revealing that meningitis was the most common diagnosis, primarily caused by bacterial agents, particularly impacting younger children and older adults with higher mortality rates.
  • The findings highlight the need for accurate diagnosis and tailored treatment plans to improve patient outcomes, suggesting further research is necessary to refine healthcare strategies for these neurological infections.
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Soil salinization significantly impacts agricultural lands and crop productivity in the study area. Moreover, freshwater scarcity poses a significant obstacle to soil reclamation and agricultural production. Therefore, eco-friendly strategies must be adopted for agro-ecosystem sustainability under these conditions.

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Background: Worldwide, cancer is still the primary cause of death, and one of the most widely used anthracyclines for treating cancer is doxorubicin (DOX). But a major worry is DOX-induced cardiomyopathy, which is primarily resulted from an excess of reactive oxygen species. Heart sarcoplasmic reticulum calcium ion ATPase2a (SERCA2a) controls the amount of calcium ions stored in the sarcoplasmic reticulum (SR).

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Background And Objective: Visceral metastatic disease in prostate cancer patients conveys a poor prognosis. Using advanced imaging techniques, studies have demonstrated increasing detection rates of visceral metastasis. Visceral metastases are now seen in up to 30-60% of prostate cancer patients.

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Prostate cancer lung metastasis represents a clinical conundrum due to its implications for advanced disease progression and the complexities it introduces in treatment planning. As the disease progresses to distant sites such as the lung, the clinical management becomes increasingly intricate, requiring tailored therapeutic strategies to address the unique characteristics of metastatic lesions. This review seeks to synthesize the current state of knowledge surrounding prostate cancer metastasis to the lung, shedding light on the diverse array of clinical presentations encountered, ranging from subtle radiological findings to overt symptomatic manifestations.

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Objectives: The aims of this study were to describe differences in nurse leaders' ethical decision-making confidence and their professional values based on identified characteristics and to explore the relationship between ethical decision making and professional values.

Background: Nurse leaders have multiple duties and obligations toward their patients, other staff, and the organizations where they work. However, ethical decisions can be complex, requiring the guidance of professional values and critical appraisal of the situation.

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Introduction In December 2019, COVID-19 originated in Wuhan, China, triggering a global pandemic. However, the Saudi Arabian Ministry of Education ensured the safe continuation of teaching and learning activities. Amid the pandemic, health sciences students were exposed to diverse learning opportunities.

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  • This study examined patterns of emergency department (ED) visits among 471 multiple sclerosis (MS) patients over five years, focusing on the causes and factors linked to these visits.
  • Out of 280 total ED visits, 43.6% were directly related to MS symptoms like weakness and numbness, while 41.1% were unrelated, and 15.4% were indirectly related, such as neurological and gastrointestinal issues.
  • The findings indicated that using disease-modifying therapies significantly reduced the likelihood of ED visits, especially high-efficacy treatments and B-cell depleting therapies, whereas patients with evidence of brain atrophy were more likely to have repeated visits.
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Background: Failure to thrive (FTT) in pediatric populations is a diagnostic challenge with implications for growth and development. Despite its prevalence, detailed epidemiological data, especially concerning organic versus non-organic etiologies, are sparse. This study examines the prevalence, characteristics, and outcomes of organic and non-organic FTT in a pediatric outpatient setting at King Abdulaziz Medical City, Jeddah.

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Background: Identifying nurses' perceptions of the knowledge-practice gap is a critical step toward developing evidence-based practice. Currently, multiple factors contribute to the gap between nursing education and actual practice. Addressing this gap requires a new perspective, not yet adequately represented in the literature, that includes nurses' perceptions.

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  • The study investigated the prevalence of radiographic progression (rDP) in men with prostate cancer who had very low prostate-specific antigen (PSA) levels using C-11 choline PET imaging.
  • Out of 1323 patients with rDP, 220 (16.6%) exhibited this progression while their PSA was under 0.5 ng/mL, with 78% subsequently developing castration-resistant prostate cancer (CRPC).
  • Key findings indicate that common sites of rDP included lymph nodes and bones, with factors like older age and CRPC status linked to poorer survival rates, as 46% of this low PSA rDP group died during follow-up.
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The trail aimed to explore the effect of dietary supplementation of Milk Thistle (MT) extract on growth performance and health status of growing rabbits exposed to serve heat stress condition, considering the economic efficiency of supplementation. A total of 96 weaned male rabbits were divided into 4 groups (24 rabbits/group). The first group received the basal diet without any supplementation and served as a control (MT0), while 2nd, 3rd and 4th groups supplemented with MT at levels of 5 (MT5), 10 (MT10) and 15 (MT15) g/kg diet, respectively, for 10 consecutive weeks.

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Background: Diabetes mellitus (DM) is a major chronic condition that is considered a strong indicator of poor cardiovascular outcomes, such as recurrent infarction and heart failure (HF), in individuals with acute myocardial infarction (AMI). However, the concept of left ventricular remodeling (LVR) following AMI in DM patients is not well understood and studied in Saudi Arabia. Thus, the aim of this study is to assess the association between LVR and DM in patients presenting with ST-elevation myocardial infarction (STEMI) who had reperfusion therapy with optimal medical therapy after percutaneous coronary intervention (PCI).

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  • SPP1 expression varies in different types of cancer and may serve as a potential biomarker for bladder cancer prognosis.
  • Recent studies highlight SPP1's broader role in bladder cancer but lack clarity on its expression mechanisms, immune-related functions, and overall significance in patient outcomes.
  • Analysis using IHC staining and bioinformatics tools shows that lower SPP1 levels are linked to poorer survival rates, while its expression correlates with various clinicopathological factors and immune cell infiltration.
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Background: Viral infections cause damage and long-term injury to infected human tissues, demanding therapy with antiviral and wound healing medications. Consequently, safe phytochemical molecules that may control viral infections with an ability to provide wound healing to viral-induced tissue injuries, either topically or systemically, are advantageous. Herein, we hypothesized that epigallocatechin-3-gallate (EGCG), the most abundant polyphenol in green tea, might be effective as a wound healing, antiviral, and antifibrotic therapy.

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Background: Pulmonary function test (PFT) is used as a tool for pre-transplant risk assessment and as a predictor of post-transplant outcomes. As there are currently few studies that discuss the role of PFT in bone marrow transplantation (BMT) patients in Saudi settings, and as the number of transplant patients with benign and malignant conditions continues to increase, this study was conducted with the aim of assessing the local practice.

Methods: This retrospective cohort study included all adult patients who underwent BMT at Princess Noorah Oncology Center, King Abdulaziz Medical City, Jeddah, between 2014 and 2020.

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Background: The objective of this study was to evaluate the prognostic value of early PSA decline following initiation of second-generation hormone therapy (2nd HT), namely abiraterone acetate or enzalutamide, in patients with taxane-refractory metastatic castrate-resistant prostate cancer (mCRPC) and evaluate utility of this metric in informing intensified surveillance/imaging protocols.

Methods: We retrospectively identified 75 mCRPC patients treated with 2nd HT following docetaxel failure (defined as PSA rise and radiographic progression). Patients were categorized patients into two cohorts based on the first PSA within 3 months after initiation of therapy: PSA reduction ≥50% (Group A) and PSA reduction <50% (Group B).

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  • This study investigates the occurrence of brain metastases in prostate cancer (PCa) patients, identifying 34 cases out of 4575 over a nine-year period.
  • The median age of patients at diagnosis was 66 years, with a significant percentage (76.5%) dying within an average follow-up period of 2.2 months.
  • Treatment methods included stereotactic radiosurgery (SRS), whole brain radiotherapy (WBRT), and systemic therapy, with SRS and WBRT showing better overall survival rates compared to systemic therapy alone.
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  • Clostridium difficile infection (CDI) is increasingly common among patients with inflammatory bowel disease (IBD) and is linked to worse outcomes in these patients.
  • A study conducted at King Abdulaziz Medical City analyzed data from 89 CDI patients, focusing on demographics and various health correlations over a four-year period.
  • Results showed that most CDI patients were adults, primarily males, with a high prevalence among immunocompromised individuals, especially those with cancer; the main diagnostic method used was PCR.
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