Publications by authors named "Mohamed Dafaalla"

Background And Aims: This study assessed the impact of incorporating cancer as a predictor on performance of the PRECISE-DAPT score.

Methods: A nationally linked cohort of ST-elevation myocardial infarction patients between 1 January 2005 and 31 March 2019 was derived from the UK Myocardial Ischaemia National Audit Project and the UK Hospital Episode Statistics Admitted Patient Care registries. The primary outcome was major bleeding at 1 year.

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Article Synopsis
  • A study was conducted to analyze heart failure (HF) readmission rates in cancer patients who had acute myocardial infarction (AMI), using data from a national database covering 2005-2019.
  • Among 326,551 STEMI patients, 7,090 were actively dealing with cancer, showing lower rates of specialized cardiac care and medication prescriptions compared to non-cancer patients.
  • Despite higher initial HF readmission rates (3.2% at 30 days and 9.4% at 1 year), cancer was not a significant independent factor affecting readmission after adjusting for other variables.
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  • The study analyzed the outcomes of coronary atherectomy procedures performed during percutaneous coronary interventions in centers with surgical capabilities (SCs) versus those without (NSCs) from 2006 to 2019.
  • Out of 20,833 patients treated, 38% underwent the procedure at NSCs, with a notable increase in atherectomies at NSCs over the years.
  • Findings showed that patients at NSCs were generally older and had similar health conditions compared to those at SCs, with no significant differences in in-hospital mortality or major adverse events between the two types of centers.
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Trials suggest patients with ST-elevation myocardial infarction (STEMI) without 'standard modifiable cardiovascular risk factors' (SMuRFs) have poorer outcomes, but the role of ethnicity has not been investigated. We analyzed 118,177 STEMI patients using the Myocardial Ischaemia National Audit Project (MINAP) registry. Clinical characteristics and outcomes were analyzed using hierarchical logistic regression models; patients with ≥1 SMuRF (n = 88,055) were compared with 'SMuRFless' patients (n = 30,122), with subgroup analysis comparing outcomes of White and Ethnic minority patients.

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Aims: To assess processes of care and clinical outcomes in cancer patients with ST elevation myocardial infarction (STEMI) according to cancer type.

Methods And Results: This is a national population-based study of patients admitted with STEMI in the UK between January 2005 and March 2019. Data were obtained from the National Heart Attack Myocardial Infarction National Audit Project (MINAP) registry and the Hospital Episode Statistics registry.

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Aims: Prognosis for ST-segment elevation myocardial infarction (STEMI) is worse when heart failure is present on admission. Understanding clinical practice in different health systems can identify areas for quality improvement initiatives to improve outcomes. In the absence of international comparison studies, we aimed to compare treatments and in-hospital outcomes of patients admitted with ST elevation myocardial infarction (STEMI) by heart failure status in two healthcare-wide cohorts.

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Objective: To assess the impact of patient's sex on outcomes and management of acute myocardial infarction (AMI) patients presenting with out-of-hospital cardiac arrest (OHCA).

Patients And Methods: We conducted a population-based retrospective cohort study in AMI patients admitted with OHCA between 2010 and 2017 from the Myocardial Ischaemia National Audit Project (MINAP) registry. We used multivariable logistic regression models to evaluate the role of sex as a predictor of clinical outcomes and treatment strategy.

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Background: There are limited data on the outcomes of percutaneous coronary intervention (PCI) following stent thrombosis (ST) and differences exist based on timing.

Aims: Our aim was to study the rates of PCI procedures for an ST indication among all patients admitted for PCI at a national level and to compare their characteristics and procedural outcomes based on ST timing.

Methods: All PCI procedures in England and Wales (2014-2020) were retrospectively analysed and stratified by the presence of ST into four groups: non-ST, early ST (0-30 days), late ST (>30-360 days), very late ST (>360 days).

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Aims: Little is known about the outcomes and processes of care of patients with non-ST-segment myocardial infarction (NSTEMI) who present with 'polyvascular' disease.

Methods And Results: We analysed 287 279 NSTEMI patients using the Myocardial Ischaemia National Audit Project registry. Clinical characteristics and outcomes were analysed according to history of affected vascular bed-coronary artery disease (CAD), cerebrovascular disease (CeVD), and peripheral vascular disease (PVD)-with comparison to a historically disease-free control group, comprising 167 947 patients (59%).

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Background: Studies of racial disparities in care of patients admitted with an out-of-hospital cardiac arrest (OHCA) in the setting of acute myocardial infarction (AMI) have shown inconsistent results. Whether these differences in care exist in the universal healthcare system in United Kingdom is unknown.

Methods: Patients admitted with a diagnosis of AMI and OHCA between 2010 and 2017 from the Myocardial Ischaemia National Audit Project (MINAP) were studied.

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Objectives: We aimed to identify whether the availability of catheter laboratory affects clinical outcomes of out-of-hospital cardiac arrest (OHCA) complicating myocardial infarction (AMI).

Methods: Patients admitted with a diagnosis of AMI and OHCA from the Myocardial Ischaemia National Audit Project (MINAP) between 2010 to 2017 were stratified into three groups based on initial hospital's catheter laboratory status: hospitals without a catheter laboratory (No-catheter lab hospitals), hospitals with diagnostic catheter laboratory (Diagnostic hospitals), and hospitals with PCI facilities (PCI hospitals). We used multivariable logistic regression to evaluate factors associated with clinical outcomes.

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There is limited data regarding the impact of time of admission on clinical outcomes of out of hospital cardiac arrest (OHCA) complicating acute myocardial infarction (AMI). We investigated the patient characteristics, management, and outcomes of OHCA complicating AMI according to the time of admission. Patients admitted with a diagnosis of AMI and OHCA between 2010 and 2017 from the Myocardial Ischemia National Audit Project (MINAP) were studied.

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We investigated the incidence, management, and outcomes of acute myocardial infarction (AMI) patients according to cardiac arrest location. Patients admitted with a diagnosis of AMI between January 1, 2010 to March 31, 2017 from the Myocardial Ischaemia National Audit Project (MINAP) were studied. We used logistic regression models to evaluate predictors of the clinical outcomes and treatment strategy.

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Background: Infective endocarditis secondary to can present with classical constitutional symptoms of infective endocarditis but can be blood culture negative and without vegetations on transthoracic or transoesophageal echocardiogram. Patients with prosthetic valves are at particularly high risk.

Case Summary: We present two patients who were diagnosed with infective endocarditis secondary to infection.

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Background: Breast cancer (BC) is the most common type of cancer in women. Among many risk factors of BC, mutations in BRCA2 gene were found to be the primary cause in 5-10% of cases. The majority of deleterious mutations are frameshift or nonsense mutations.

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Objectives: We aimed to stratify the possible risk factors for diabetic cardiac autonomic neuropathy (CAN).

Methods: We did a meta-analysis of risk factors of CAN. We did a web-based search for literature in MEDLINE/PubMed, Scopus database and CENTRAL database up to August 2015.

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We aimed to generate a valid reliable Arabic version of MOS social support survey (MOS-SSS). We did a cross sectional study in medical students of Faculty of Medicine in Khartoum, Sudan. We did a clustered random sampling in 500 students of which 487 were suitable for analysis.

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