Alejandro Lazo‐Langner

ORCID: 0000-0001-6869-8431
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About
Contact & Profiles
Research Areas
  • Venous Thromboembolism Diagnosis and Management
  • Atrial Fibrillation Management and Outcomes
  • Blood Coagulation and Thrombosis Mechanisms
  • Myeloproliferative Neoplasms: Diagnosis and Treatment
  • Acute Myeloid Leukemia Research
  • Erythropoietin and Anemia Treatment
  • Hemoglobinopathies and Related Disorders
  • Central Venous Catheters and Hemodialysis
  • Iron Metabolism and Disorders
  • Neutropenia and Cancer Infections
  • Antiplatelet Therapy and Cardiovascular Diseases
  • Hematological disorders and diagnostics
  • COVID-19 and healthcare impacts
  • Heparin-Induced Thrombocytopenia and Thrombosis
  • Blood disorders and treatments
  • COVID-19 Clinical Research Studies
  • Lymphoma Diagnosis and Treatment
  • Acute Ischemic Stroke Management
  • Diagnosis and Treatment of Venous Diseases
  • Cancer Treatment and Pharmacology
  • Complement system in diseases
  • Hematopoietic Stem Cell Transplantation
  • Cardiac tumors and thrombi
  • Chronic Myeloid Leukemia Treatments
  • Chronic Lymphocytic Leukemia Research

Western University
2015-2024

London Health Sciences Centre
2014-2024

King Abdulaziz University
2023

Matsushita Memorial Hospital
2022

Panasonic (Japan)
2022

Kyoto Prefectural University of Medicine
2022

Victoria Hospital
2008-2021

Institute for Clinical Evaluative Sciences
2014-2018

King Abdulaziz Medical City
2016

University of Ottawa
2005-2015

Retrospective analyses suggest that pulmonary embolism is ruled out by a d-dimer level of less than 1000 ng per milliliter in patients with low clinical pretest probability (C-PTP) and 500 moderate C-PTP. We performed prospective study which was considered to be without further testing outpatients C-PTP or milliliter. All other underwent chest imaging (usually computed tomographic angiography). If not diagnosed, did receive anticoagulant therapy. were followed for 3 months detect venous...

10.1056/nejmoa1909159 article EN New England Journal of Medicine 2019-11-27

Venous thromboembolism may be the earliest sign of cancer. Currently, there is a great diversity in practices regarding screening for occult cancer person who has an unprovoked venous thromboembolism. We sought to assess efficacy strategy that included comprehensive computed tomography (CT) abdomen and pelvis patients had first thromboembolism.We conducted multicenter, open-label, randomized, controlled trial Canada. Patients were randomly assigned undergo limited occult-cancer (basic blood...

10.1056/nejmoa1506623 article EN New England Journal of Medicine 2015-06-22

Oral factor Xa inhibitors are increasingly used for anticoagulation, but there is no approved reversal agent. Prothrombin complex concentrate (PCC) the management of Xa-inhibitor-associated bleeding has been described in small case series and one cohort study. Patients on apixaban or rivaroxaban, suffering a major bleed, were treated at nine Canadian hospitals as per existing hospital protocol with fixed dose PCC 2,000 units subsequently recruited 30-day follow-up. The treating physician...

10.1055/s-0038-1636541 article EN Thrombosis and Haemostasis 2018-03-21

Background— Long-term low-molecular-weight heparin (LMWH) is the current standard for treatment of venous thromboembolism (VTE) in cancer patients. Whether strategies should vary according to individual risk VTE recurrence remains unknown. We performed a retrospective cohort study and validation patients with cancer-associated derive clinical prediction rule that stratifies risk. Methods Results— The 543 determined model best classification performance included 4 independent predictors (sex,...

10.1161/circulationaha.111.051920 article EN Circulation 2012-06-08

To update the American Society of Clinical Oncology (ASCO)/American Hematology (ASH) recommendations for use erythropoiesis-stimulating agents (ESAs) in patients with cancer.PubMed and Cochrane Library were searched randomized controlled trials (RCTs) meta-analyses RCTs cancer published from January 31, 2010, through May 14, 2018. For biosimilar ESAs, literature search was expanded to include or chronic kidney disease cohort studies due limited RCT evidence setting. ASCO ASH convened an...

10.1200/jco.18.02142 article EN Journal of Clinical Oncology 2019-04-10

Abstract Objective To determine the efficacy and safety of dalteparin postoperative bridging treatment versus placebo for patients with atrial fibrillation or mechanical heart valves when warfarin is temporarily interrupted a planned procedure. Design Prospective, double blind, randomised controlled trial. Setting 10 thrombosis research sites in Canada India between February 2007 March 2016. Participants 1471 aged 18 years older who required temporary interruption Intervention Random...

10.1136/bmj.n1205 article EN cc-by-nc BMJ 2021-06-09

Abstract Heparins and vitamin K antagonists are the mainstay of treatment splanchnic vein thrombosis (SVT). Rivaroxaban is a potential alternative, but data to support its use limited. We aimed evaluate safety efficacy rivaroxaban for acute SVT. In an international, single-arm clinical trial, adult patients with first episode noncirrhotic, symptomatic, objectively diagnosed SVT received 15 mg twice daily 3 weeks, followed by 20 intended duration months. Patients Budd-Chiari syndrome those...

10.1182/bloodadvances.2022007397 article EN cc-by-nc-nd Blood Advances 2022-04-19

Background The field of oncology is at the forefront advances in artificial intelligence (AI) health care, providing an opportunity to examine early integration these technologies clinical research and patient care. Hope that AI will revolutionize care delivery improve outcomes has been accompanied by concerns about impact on equity. Objective We aimed conduct a scoping review literature address question, “What are current potential impacts equity oncology?” Methods Following PRISMA-ScR...

10.2196/39748 article EN cc-by Journal of Medical Internet Research 2022-08-25

Background . Thrombocytosis is a common reason for referral to Hematology. Differentiating between secondary causes of thrombocytosis and essential thrombocythemia (ET) often clinically challenging. A practical diagnostic approach identify could reduce overinvestigation such as next generation sequencing (NGS) panel. Methods Results All adult patients with (≥450 × 10 9 /L) who underwent molecular testing at single tertiary care centre January 1, 2018 May 31, 2021 were evaluated. Clinical...

10.1155/2024/3056216 article EN cc-by Advances in Hematology 2024-01-01
Grégoire Le Gal Michael J. Kovacs Laurent Bertoletti Françis Couturaud Carole Dennie and 92 more Andrew M. Hirsch Menno V. Huisman Frederikus A. Klok Noémie Kraaijpoel Ranjeeta Mallick Amanda Pecarskie Elena Peña Penny Phillips Isabelle Pichon Tim Ramsay Marc Righini Marc Rodger Pierre‐Marie Roy Olivier Sanchez Jeannot Schmidt Sam Schulman Sudeep Shivakumar Albert Trinh-Duc R Verdet Ulric Vinsonneau Philip S. Wells Cynthia Wu Erik Yeo Marc Carrier Amin Zahrai Aurélien Delluc Lisa Duffett Lana A. Castellucci Alan Karovitch Cathy Code Dimitri Scarvelis Carol Gonsalves Melissa Forgie Esteban Gándara Mark Blostein Susan R. Kahn Vicky Tagalakis Maral Koolian Bruce Ritchie Sarah Takach-Lapner Jeffery Patterson Lori Rackel Alejandro Lazo‐Langner Judith Kovacs Susan Solymoss Michelle Zondag Nicholas Forward Mary Margaret Keating Sue Robinson David R. Anderson Ismail Sharif Andrea Kew David Macdonald Meissa Kare Amina Chaalal Thomas Moumneh Béatrice Gable Aurore Hamard Chloé Ragueneau Barbara Maquin Clotilde Aubert Cindy Augereau Dominique Mottier Emmanuelle Le Moigne S Boismal P. Stéphan C Jézéquel Raphaël Le Mao Cécile Tromeur Claire de Moreuil Julien Coadic C. Camminada Marc Danguy des Déserts Elisabeth Beuvard Guy Meyer Benjamin Planquette Jean Pastré Gisèle Morin Alexis Ferré Amélie Marquette Siwar Smii Sandrine Accassat Carole Chauvet Corinne Bernabet Nadège Koffi Malan Antoine Louise Riberdy Nick van Es Pieter W. Kamphuisen Peter Verhamme Jan-Beyer Westendorf Philippe Girard Florence Parent

Background: The incidence of pulmonary embolism has been increasing, but its case-fatality rate is decreasing, suggesting a lesser severity illness. clinical importance patients with isolated to the subsegmental vessels unknown. Objective: To determine recurrent venous thromboembolism in managed without anticoagulation. Design: Multicenter prospective cohort study. (ClinicalTrials.gov: NCT01455818) Setting: Eighteen sites between February 2011 and 2021. Patients: Patients embolism....

10.7326/m21-2981 article EN Annals of Internal Medicine 2021-11-22

10.1111/j.1538-7836.2010.03981.x article EN publisher-specific-oa Journal of Thrombosis and Haemostasis 2010-07-07

Variable warfarin response during treatment initiation poses a significant challenge to providing optimal anticoagulation therapy. We investigated the determinants of initial in cohort 167 patients. During first nine days with pharmacogenetics-guided dosing, S-warfarin plasma levels and international normalized ratio were obtained serve as inputs pharmacokinetic-pharmacodynamic (PK-PD) model. Individual PK (S-warfarin clearance) PD (Imax) parameter values estimated. Regression analysis...

10.1371/journal.pone.0027808 article EN cc-by PLoS ONE 2011-11-16
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