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The Hospital Frailty Risk Score and its association with in-hospital mortality, cost, length of stay and discharge location in patients with heart failure (2020)
Journal Article
Shing Kwok, C., Zieroth, S., Van Spall, H. G. C., Helliwell, T., Clarson, L., Mohamed, M., …Mamas, M. A. (2020). The Hospital Frailty Risk Score and its association with in-hospital mortality, cost, length of stay and discharge location in patients with heart failure. International Journal of Cardiology, 184-190. https://doi.org/10.1016/j.ijcard.2019.09.064

Background: Little is known about frailty amongst patients hospitalized with heart failure (HF) on a national level. Methods: We conducted a retrospective cohort study of patients admitted to hospital for HF in the United States. We examined how... Read More about The Hospital Frailty Risk Score and its association with in-hospital mortality, cost, length of stay and discharge location in patients with heart failure.

Percutaneous Coronary Intervention Outcomes in Patients with Rheumatoid Arthritis, Systemic Lupus Erythematosus and Systemic sclerosis (2020)
Journal Article
Martinez, S. C., Mohamed, M., Potts, J., Abhishek, A., Roddy, E., Savage, M., …Mamas, M. A. (2020). Percutaneous Coronary Intervention Outcomes in Patients with Rheumatoid Arthritis, Systemic Lupus Erythematosus and Systemic sclerosis. Rheumatology, 59(9), 2512-2522. https://doi.org/10.1093/rheumatology/kez639

Objective Patients with autoimmune rheumatic disease (AIRD) are at an increased risk of coronary artery disease. The present study sought to examine the prevalence and outcomes of AIRD patients undergoing percutaneous coronary intervention (PCI) fro... Read More about Percutaneous Coronary Intervention Outcomes in Patients with Rheumatoid Arthritis, Systemic Lupus Erythematosus and Systemic sclerosis.

Correction to: The comorbidity burden of type 2 diabetes mellitus: patterns, clusters and predictions from a large English primary care cohort. (2020)
Journal Article
Chew-Graham, Mallen, & Mamas. (2020). Correction to: The comorbidity burden of type 2 diabetes mellitus: patterns, clusters and predictions from a large English primary care cohort. BMC Medicine, https://doi.org/10.1186/s12916-020-1492-5

The original article [1] contains an omitted grant acknowledgement and affiliation as relates to the contribution of co-author, Rafael Perera-Salazar. As such, the following two amendments should apply to the original article.

Unplanned hospital readmissions after acute myocardial infarction: A nationwide analysis of rates, trends, predictors and causes in the United States between 2010 and 2014 (2020)
Journal Article
Capers I, Q., Fischmann, D., Kwok, C., Savage, M., Gulati, M., Potts, J., …Mamas, M. (2020). Unplanned hospital readmissions after acute myocardial infarction: A nationwide analysis of rates, trends, predictors and causes in the United States between 2010 and 2014. Coronary Artery Disease, 354-364. https://doi.org/10.1097/MCA.0000000000000844

Background Unplanned hospital readmissions are an important quality metric for benchmarking but there is limited data following an acute myocardial infarction (AMI). This study aims to examine the 30-day unplanned readmission rate, predictors, cause... Read More about Unplanned hospital readmissions after acute myocardial infarction: A nationwide analysis of rates, trends, predictors and causes in the United States between 2010 and 2014.

Management Strategies and Clinical Outcomes of Acute Myocardial Infarction in Leukemia Patients: Insights from Nationwide United States Hospitalizations. (2020)
Journal Article
Mohamed, M., Lopez-Mattei, J., Iliesc, C., Parwani, P., Bharadwaj, A., Kim, P., …Mamas, M. (2020). Management Strategies and Clinical Outcomes of Acute Myocardial Infarction in Leukemia Patients: Insights from Nationwide United States Hospitalizations. International Journal of Clinical Practice, -. https://doi.org/10.1111/ijcp.13476

BACKGROUND: Patients with leukemia are at increased risk of cardiovascular events. There are limited outcomes data for patients with a history of leukemia who present with an acute myocardial infarction (AMI). METHODS: We queried the Nationwide Inpat... Read More about Management Strategies and Clinical Outcomes of Acute Myocardial Infarction in Leukemia Patients: Insights from Nationwide United States Hospitalizations..

Rates, Predictors and the Impact Cannabis Misuse on In-hospital Outcomes Among Patients Undergoing Percutaneous Coronary Intervention (From the National Inpatient Sample). (2020)
Journal Article
Rashid, Mamas, & Nolan. (2020). Rates, Predictors and the Impact Cannabis Misuse on In-hospital Outcomes Among Patients Undergoing Percutaneous Coronary Intervention (From the National Inpatient Sample). International Journal of Clinical Practice, e13477 - ?. https://doi.org/10.1111/ijcp.13477

BACKGROUND: Whether cannabis use worsens outcomes in coronary heart disease is unknown and no previous study has evaluated outcomes for patients who undergo percutaneous coronary intervention (PCI) according to cannabis use. METHODS: We analysed pati... Read More about Rates, Predictors and the Impact Cannabis Misuse on In-hospital Outcomes Among Patients Undergoing Percutaneous Coronary Intervention (From the National Inpatient Sample)..

Complex high-risk and indicated percutaneous coronary intervention for stable angina: Does operator volume influence patient outcome? (2020)
Journal Article
Mamas. (2020). Complex high-risk and indicated percutaneous coronary intervention for stable angina: Does operator volume influence patient outcome?. American Heart Journal, 15 - 25. https://doi.org/10.1016/j.ahj.2019.12.019

BACKGROUND: Complex high-risk and indicated revascularization using percutaneous coronary intervention (CHIP-PCI) is an emerging concept that is poorly studied. OBJECTIVE: To define temporal changes in CHIP-PCI volumes, and the relationship between o... Read More about Complex high-risk and indicated percutaneous coronary intervention for stable angina: Does operator volume influence patient outcome?.

Outcomes of percutaneous coronary interventions in cancer patients. (2020)
Journal Article
Mamas. (2020). Outcomes of percutaneous coronary interventions in cancer patients. Expert Review of Cardiovascular Therapy, 25 - 32. https://doi.org/10.1080/14779072.2020.1718493

Introduction: There are numerous shared risk factors in the etiopathogenesis of coronary artery disease (CAD) and cancer both at epidemiologic and molecular level. Additionally, different modalities of treatment of cancer such as radiation, chemother... Read More about Outcomes of percutaneous coronary interventions in cancer patients..

Trends of sex differences in outcomes of cardiac electronic device implantations in the United States (2020)
Journal Article
Osama Mohamed, M., Santos Volgman, A., Contractor, T., Sharma, P. S., Shing Kwok, C., Rashid, M., …Mamas, M. A. (2020). Trends of sex differences in outcomes of cardiac electronic device implantations in the United States. Canadian Journal of Cardiology, 69-78. https://doi.org/10.1016/j.cjca.2019.08.012

Background The disparity in outcomes of CIED implantations between sexes has been previously demonstrated in device-specific cohorts (e.g. implantable cardioverter defibrillators (ICD)). However, it is unclear whether sex differences are present with... Read More about Trends of sex differences in outcomes of cardiac electronic device implantations in the United States.

Sex differences in rates and causes of 30-day readmissions after cardiac electronic device implantations: insights from the Nationwide Readmissions Database (2019)
Journal Article
Mamas. (2019). Sex differences in rates and causes of 30-day readmissions after cardiac electronic device implantations: insights from the Nationwide Readmissions Database. International Journal of Cardiology, https://doi.org/10.1016/j.ijcard.2019.12.012

Background Women undergoing cardiac implantable electronic device (CIED) implantation are at a higher risk of procedure-related complications. The present study examined sex differences in rates and causes of 30-day readmissions following CIED imp... Read More about Sex differences in rates and causes of 30-day readmissions after cardiac electronic device implantations: insights from the Nationwide Readmissions Database.

Acute myocardial infarction treatments and outcomes in 6.5 million patients with a current or historical diagnosis of cancer in the USA (2019)
Journal Article
Bharadwaj, A., Potts, J., Mohamed, M. O., Parwani, P., Swamy, P., Lopez-Mattei, J. C., …Mamas, M. A. (2020). Acute myocardial infarction treatments and outcomes in 6.5 million patients with a current or historical diagnosis of cancer in the USA. European Heart Journal, 41(23), 2183-2193. https://doi.org/10.1093/eurheartj/ehz851

Aim: The aim of this study is to evaluate temporal trends, treatment and clinical outcomes of patients who present with an acute myocardial infarction (AMI) and have a current or historical diagnosis of cancer, according to cancer type and presence... Read More about Acute myocardial infarction treatments and outcomes in 6.5 million patients with a current or historical diagnosis of cancer in the USA.

Dedicated Bifurcation Stents for Coronary Bifurcation Lesions: A Systematic Review and Meta-Analysis of Randomized-Controlled Trials. (2019)
Journal Article
Mamas. (2019). Dedicated Bifurcation Stents for Coronary Bifurcation Lesions: A Systematic Review and Meta-Analysis of Randomized-Controlled Trials

BACKGROUND: Percutaneous coronary intervention (PCI) of coronary bifurcation lesions (CBL) remains a challenge in contemporary practice due to the procedural and technical difficulties involved. We sought to review the current evidence on the safety... Read More about Dedicated Bifurcation Stents for Coronary Bifurcation Lesions: A Systematic Review and Meta-Analysis of Randomized-Controlled Trials..

The Influence of the Charlson Comorbidity Index on Procedural Characteristics, VARC-2 Endpoints and 30-Day Mortality Among Patients Who Undergo Transcatheter Aortic Valve Implantation. (2019)
Journal Article
Mamas, & Nolan. (2019). The Influence of the Charlson Comorbidity Index on Procedural Characteristics, VARC-2 Endpoints and 30-Day Mortality Among Patients Who Undergo Transcatheter Aortic Valve Implantation. Heart, Lung and Circulation, 1827-1834. https://doi.org/10.1016/j.hlc.2018.11.006

BACKGROUND: Aortic stenosis (AS) is a common valvular abnormality and transcatheter aortic valve implantation (TAVI) is being increasingly used to treat patients considered too high risk for conventional surgery. We aimed to assess the prevalence of... Read More about The Influence of the Charlson Comorbidity Index on Procedural Characteristics, VARC-2 Endpoints and 30-Day Mortality Among Patients Who Undergo Transcatheter Aortic Valve Implantation..

Proximal Left Anterior Descending Artery Treatment Using a Bioresorbable Polymer Coating Sirolimus-Eluting Stent: Real-World Outcomes From the Multicenter Prospective e-Ultimaster Registry (2019)
Journal Article
Mamas. (2019). Proximal Left Anterior Descending Artery Treatment Using a Bioresorbable Polymer Coating Sirolimus-Eluting Stent: Real-World Outcomes From the Multicenter Prospective e-Ultimaster Registry. Journal of the American Heart Association Cardiovascular and Cerebrovascular Disease, https://doi.org/10.1161/JAHA.119.013786

Background Guidelines recommend heart team discussion and coronary artery bypass graft consideration in patients with proximal left anterior descending (LAD) artery stenosis. Evidence suggests that outcomes of proximal LAD angioplasty might not diffe... Read More about Proximal Left Anterior Descending Artery Treatment Using a Bioresorbable Polymer Coating Sirolimus-Eluting Stent: Real-World Outcomes From the Multicenter Prospective e-Ultimaster Registry.

Baseline risk, timing of invasive strategy and guideline compliance in NSTEMI: Nationwide analysis from MINAP. (2019)
Journal Article
Mamas, & Rashid. (2019). Baseline risk, timing of invasive strategy and guideline compliance in NSTEMI: Nationwide analysis from MINAP. International Journal of Cardiology, 7 - 13. https://doi.org/10.1016/j.ijcard.2019.11.146

BACKGROUND: International guidelines recommend that for NSTEMI, the timing of invasive strategy (IS) is a function of patient's baseline risk. The extent to which this is delivered across and within healthcare systems is unknown. METHODS: Data were d... Read More about Baseline risk, timing of invasive strategy and guideline compliance in NSTEMI: Nationwide analysis from MINAP..

Outcomes Following Percutaneous Coronary Intervention in Saphenous Vein Grafts With and Without Embolic Protection Devices (2019)
Journal Article
Rashid, M., Mohamed, M., Nolan, J., & Mamas, M. (2019). Outcomes Following Percutaneous Coronary Intervention in Saphenous Vein Grafts With and Without Embolic Protection Devices. JACC: Cardiovascular Interventions, 2286 -2295. https://doi.org/10.1016/j.jcin.2019.08.037

OBJECTIVES: The aim of this study was to describe the early (inpatient and 30-day) and late (1-year) outcomes of percutaneous coronary intervention (PCI) in saphenous vein grafts (SVGs), with and without the use of embolic protection devices (EPD), i... Read More about Outcomes Following Percutaneous Coronary Intervention in Saphenous Vein Grafts With and Without Embolic Protection Devices.

Best Practices for the Prevention of Radial Artery Occlusion After Transradial Diagnostic Angiography and Intervention: An International Consensus Paper. (2019)
Journal Article
Bernat, I., Aminian, A., Pancholy, S., Mamas, M., Gaudino, M., Nolan, J., …International Group, R. (2019). Best Practices for the Prevention of Radial Artery Occlusion After Transradial Diagnostic Angiography and Intervention: An International Consensus Paper. JACC. Cardiovascular interventions, 12(22), 2235 - 2246. https://doi.org/10.1016/j.jcin.2019.07.043

Transradial access (TRA) is increasingly used worldwide for percutaneous interventional procedures and associated with lower bleeding and vascular complications than transfemoral artery access. Radial artery occlusion (RAO) is the most frequent post-... Read More about Best Practices for the Prevention of Radial Artery Occlusion After Transradial Diagnostic Angiography and Intervention: An International Consensus Paper..

Incidence, Predictors, and Prognostic Impact of Bleeding After Hospital Discharge Following Acute Coronary Syndrome: A Cohort Study Within the Clinical Practice Research Datalink (2019)
Presentation / Conference
Ismail, N., Jordan, K. P., Kadam, U. T., Edwards, J. J., & Mamas, M. A. (2019, November). Incidence, Predictors, and Prognostic Impact of Bleeding After Hospital Discharge Following Acute Coronary Syndrome: A Cohort Study Within the Clinical Practice Research Datalink. Presented at American Heart Association's 2019 Scientific Sessions, Philadelphia, Pennsylvania, USA

Introduction: The secondary management of acute coronary syndrome (ACS) with antithrombotic medication achieves the desired goal of reducing adverse ischaemic events, albeit at the expense of increased bleeding complications. However, little is known... Read More about Incidence, Predictors, and Prognostic Impact of Bleeding After Hospital Discharge Following Acute Coronary Syndrome: A Cohort Study Within the Clinical Practice Research Datalink.

Relation of Frailty to Outcomes in Percutaneous Coronary Intervention (2019)
Journal Article
Mamas. (2019). Relation of Frailty to Outcomes in Percutaneous Coronary Intervention. Cardiovascular Revascularization Medicine, 811-818. https://doi.org/10.1016/j.carrev.2019.11.009

There is growing awareness that frailty may be an important marker of adverse outcomes in PCI but there is no literature from national cohorts. This study examines a national cohort of patients who underwent percutaneous coronary intervention (PCI) r... Read More about Relation of Frailty to Outcomes in Percutaneous Coronary Intervention.