Nahla Ahmed El-Shahat

Nahla Ahmed El-Shahat

*This is an algorithmically generated author record based on publicly available information.

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Nahla Ahmed El-Shahat has a total of 26 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • The role of immunotherapy plus chemotherapy versus chemotherapy alone as first-line treatment for advanced non-small cell lung cancer: an updated systematic review and meta-analysis of randomized controlled trials

    by Basel Abdelazeem, Kirellos Said Abbas, Fatma Labieb, Abdul Karim Arida, Nahla Ahmed El-Shahat, Joseph Shehata, Emad Kandah, Bilal Malik, Maxwell Akanbi, Abdul Rafae, et al.

    Recently published randomized controlled trials (RCTs) showed improved overall survival (OS) and progression-free survival (PFS) with the combination of immunotherapy and chemotherapy as compared t...


  • Epidemiology, clinical features, and treatment modalities of facial nerve palsy in COVID-19 patients: a systematic review

    by Aya Turki, Kirellos Said Abbas, Abdelrahman M Makram, Mostafa Elfert, Mahmoud Elmarabea, Nahla Ahmed El-Shahat, Hassan Abdalshafy, Akua Sampong, Sirisha Chintalapati, Nguyen Tien Huy

    Background Coronavirus disease 2019 (COVID-19) is responsible for a wide variety of multi-system clinical features. Facial nerve palsy (FNP) is identified as one of the neurological complications of the virus. This work aims to systematically review the clinical picture, laboratory/imaging findings, treatment options, and prognostic factors of FNP in COVID-19 patients. Methods Using six online databases, a search was conducted to include all articles with patients infected with COVID-19 and presenting with unilateral or bilateral FNP. Screening for eligibility and data extraction were done by three and four independent reviewers, respectively. Descriptive analyses and data visualizations were done using Google Sheets. Survival analysis and Kaplan–Meier plotting were done by R software. Results The data from 22 studies included 32 patients who were infected with COVID-19 and presented with clinical features of FNP. Fourteen patients were male while 18 were female. FNP affected 29 patients unilaterally and 3 patients bilaterally. The imaging findings confirmed that complications of FNP were COVID-19 related. Additionally, antivirals combined with steroids had the lowest median time (21, IQR = 8) to clinical improvement compared to steroid-only (30, IQR = 15) and antiviral-only (33, IQR = 3.5) treatments. Conclusion This study has shown a potential correlation between the increased incidence of FNP and COVID-19. We have also found that combining antivirals with steroids may have better outcomes in patients with FNP and COVID-19 although the evidence to support this claim is not strong enough. Further studies are required to assess the extent of linkage between the two conditions and how to properly manage FNP when encountered in COVID-19 patients.


  • Open Access

    The Safety and Efficacy of Nusinersen in the Treatment of Spinal Muscular Atrophy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

    by Kirellos Said Abbas, Mennatullah Mohamed Eltaras, Nahla Ahmed El-Shahat, Basel Abdelazeem, Mahmoud Shaqfeh, James Robert Brašić

    Background and objectives: Spinal muscular atrophy (SMA) is a neurodegenerative disease that leads to progressive proximal muscle weakness and muscle atrophy. To assess the beneficial and adverse effects of nusinersen, a promising intervention for SMA, we conducted a systematic search and meta-analysis of the published randomized control trials (RCTs) of nusinersen for SMA. Materials and methods: Utilizing the Preferred Reporting for Systematic Review and Meta-Analysis (PRISMA), we searched PubMed, Scopus, Web of Science, Cochrane Central, and Clinicaltrials.gov from inception to 22 July 2021. Results: Three RCTs satisfying the inclusion and exclusion criteria covered 274 patients: 178 patients in the nusinersen group. Our results show a significant risk difference (RD) in the motor milestone response (RD: 0.51; 95% CI: 0.39, 0.62; p < 0.00001) and improvement in the HINE-2 score (RD: 0.26; 95% CI: 0.12, 0.40; p < 0.0003) in the nusinersen group compared to the control group. Moreover, a significant decrease in the risk ratio (RR) for severe adverse events (RR: 0.72; 95% CI: 0.57, 0.92; p = 0.007) and any adverse event leading to treatment discontinuation (RR: 0.40; 95% CI: 0.22, 0.74; p = 0.004) was observed. An insignificant result was found for any adverse effects (RR: 0.93; 95% CI: 0.97, 1.01; p = 0.14) and for serious adverse effects (RR: 0.81; 95% CI: 0.60, 1.07; p = 0.14). Conclusions: This review provides evidence that nusinersen treatment was effective in treatment for infants with SMA and was associated with fewer severe adverse events; however, more RCTs are needed to establish evidence.


  • De-escalation from Prasugrel or Ticagrelor to Clopidogrel in Patients with Acute Coronary Syndrome Managed with Percutaneous Coronary Intervention: An Updated Meta-analysis of Randomized Clinical Trials

    by Basel Abdelazeem, Joseph Shehata, Kirellos Said Abbas, Nahla Ahmed El-Shahat, Nischit Baral, Govinda Adhikari, Hafiz Khan, Mustafa Hassan

    Introduction We aimed to evaluate the clinical benefits of a de-escalation strategy from prasugrel or ticagrelor to clopidogrel versus continuation of prasugrel or ticagrelor along with aspirin in both strategies for patients presenting with acute coronary syndrome (ACS) and treated with percutaneous coronary intervention (PCI), and to analyze the effect of the recently published randomized clinical trial (RCT) by Park et al., which included the largest sample size ever and the largest switched number of patients, on current guidelines and practices. Data Sources The PubMed, EMBASE, Scopus, Web of Science, Cochrane Central, and Google Scholar databases were searched systematically from inception to May 2021 by using the search terms (‘de-escalation’ OR ‘switching’) AND (‘antiplatelet’ OR ‘clopidogrel’ OR ‘ticagrelor’ OR ‘prasugrel’) AND (‘percutaneous coronary intervention’ OR ‘PCI’' OR ‘Acute coronary syndrome’ OR ‘ACS’). Study Selection and Data Extraction We included RCTs that reported the primary outcomes, i.e. net clinical benefits and Bleeding Academic Research Consortium (BARC) type 2 or higher bleeding. A combination of both ischemic and bleeding events was defined as a net clinical benefit. Data Synthesis A total of four RCTs were included, with 5952 patients. A random-effects meta-analysis revealed that a de-escalation strategy was associated with lower ischemic and bleeding events (net clinical benefits; risk ratio [RR] 0.63, 95% confidence interval [CI] 0.47–0.85; p = 0.003), and lower BARC type 2 or higher bleeding (RR 0.51, 95% CI 0.29–0.91; p = 0.02) when compared with a continuation strategy. Relevance to Patient Care and Clinical Practice The current guidelines recommend potent P2Y12 prasugrel or ticagrelor for 12 months despite their association with a high risk of bleeding. Our meta-analysis updates cardiologists, providing them with the best available evidence in managing patients with ACS who underwent PCI. Conclusion Among patients with ACS treated with PCI, a de-escalation strategy (prasugrel or ticagrelor to clopidogrel) is associated with lower ischemic and bleeding events (net clinical benefits) and lower BARC type 2 or higher bleeding; however, due to the limited number of included studies, further high-quality studies are needed to establish the clinical efficacy of the de-escalation strategy.