Omar Kherad

Affiliations

Service de médecine interne, Hôpital de la Tour, Avenue J.-D. Maillard 3, 1217 Genève.

Publications (39)

[Effectiveness of sunscreen against melanoma].

Revue medicale suisse

Avec: Caroline Gallay , Shireen Dumont , Omar Kherad

Inappropriateness of Repeated Laboratory and Radiological Tests for Transferred Emergency Department Patients.

Journal of clinical medicine

Avec: Jérôme Bertrand , Christophe Fehlmann , Olivier Grosgurin , François Sarasin , Omar Kherad

Outcomes following restrictive or liberal red blood cell transfusion in patients with lower gastrointestinal bleeding.

Alimentary pharmacology & therapeutics

Avec: Omar Kherad , Sophie Restellini , Myriam Martel , Michael Sey , Michael F Murphy , Kathryn Oakland , Alan Barkun , Vipul Jairath

Clinical Parameters Correlate With Endoscopic Activity of Ulcerative Colitis: A Systematic Review.

Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association

Avec: Sophie Restellini , Che-Yung Chao , Myriam Martel , Alan Barkun , Omar Kherad , Ernest Seidman , Gary Wild , Alain Bitton , Waqqas Afif , Talat Bessissow , Peter L Lakatos

Proton pump inhibitors for upper gastrointestinal bleeding.

Best practice & research. Clinical gastroenterology

Avec: Omar Kherad , Sophie Restellini , Myriam Martel , Alan Barkun

The impact of implementing a psychiatric emergency hotline on the reduction of acute hospitalizations in a Swiss tertiary hospital.

BMC psychiatry

Avec: Aurélio Restellini , Omar Kherad , Stefan Kaiser

[Check-ups in daily practice: myths and reality].

Revue medicale suisse

Avec: Mohamed Ahmed Sugulle , Line Mahfouz , Omar Kherad

Seroprevalence of anti-SARS-CoV-2 antibodies 6 months into the vaccination campaign in Geneva, Switzerland, 1 June to 7 July 2021.

Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin

Avec: Silvia Stringhini , María-Eugenia Zaballa , Nick Pullen , Javier Perez-Saez , Carlos de Mestral , Andrea Jutta Loizeau , Julien Lamour , Francesco Pennacchio , Ania Wisniak , Roxane Dumont , Hélène Baysson , Viviane Richard , Elsa Lorthe , Claire Semaani , Jean-François Balavoine , Didier Pittet , Nicolas Vuilleumier , François Chappuis , Omar Kherad , Andrew S Azman , Klara Posfay-Barbe , Laurent Kaiser , Idris Guessous , Auteur inconnu

A new screening tool for SARS-CoV-2 infection based on self-reported patient clinical characteristics: the COV

BMC infectious diseases

Avec: Pablo Diaz Badial , Hugo Bothorel , Omar Kherad , Philippe Dussoix , Faustine Tallonneau Bory , Majd Ramlawi

General health check-ups: To check or not to check? A question of choosing wisely.

European journal of internal medicine

Avec: Omar Kherad , Antonio Vaz Carneiro , Auteur inconnu

Low endoscopy bleeding risk in patients with congenital bleeding disorders.

Haemophilia : the official journal of the World Federation of Hemophilia

Avec: Marcel Tomaszewski , Marc Bienz , Omar Kherad , Sophie Restellini , Tania Laflèche , Alan Barkun , Margaret Warner , Talat Bessissow

Overuse of plain abdominal radiography in emergency departments: a retrospective cohort study.

BMC health services research

Avec: Christophe L Bertin , Simon Ponthus , Hari Vivekanantham , Pierre-Alexandre Poletti , Omar Kherad , Olivier T Rutschmann

[Importance of best practice adherence in upper gastrointestinal bleeding].

Revue medicale suisse

Avec: Magdalena Schellongova , Lena Groenendijk , Omar Kherad

Long term anti-SARS-CoV-2 antibody kinetics and correlate of protection against Omicron BA.1/BA.2 infection.

Nature communications

Avec: Javier Perez-Saez , María-Eugenia Zaballa , Julien Lamour , Sabine Yerly , Richard Dubos , Delphine S Courvoisier , Jennifer Villers , Jean-François Balavoine , Didier Pittet , Omar Kherad , Nicolas Vuilleumier , Laurent Kaiser , Idris Guessous , Silvia Stringhini , Andrew S Azman , Auteur inconnu

Seroprevalence of anti-SARS-CoV-2 antibodies and cross-variant neutralization capacity after the Omicron BA.2 wave in Geneva, Switzerland: a population-based study.

The Lancet regional health. Europe

Avec: María-Eugenia Zaballa , Javier Perez-Saez , Carlos de Mestral , Nick Pullen , Julien Lamour , Priscilla Turelli , Charlène Raclot , Hélène Baysson , Francesco Pennacchio , Jennifer Villers , Julien Duc , Viviane Richard , Roxane Dumont , Claire Semaani , Andrea Jutta Loizeau , Clément Graindorge , Elsa Lorthe , Jean-François Balavoine , Didier Pittet , Manuel Schibler , Nicolas Vuilleumier , François Chappuis , Omar Kherad , Andrew S Azman , Klara M Posfay-Barbe , Laurent Kaiser , Didier Trono , Silvia Stringhini , Idris Guessous , Auteur inconnu

Pancreaticoduodenal Artery Pseudoaneurysm Associated with Pancreatic Fibroinflammatory Mass and Duodenal Obstruction.

The American journal of case reports

Avec: Mohamed Asrih , Daniele Allali , Pierre-Henri Morère , Pierre Guibert , Omar Kherad

[Deprescribing proton pump inhibitors : what are the clinical practice guidelines ?]

Revue medicale suisse

Avec: Liv Mahler , Kenza Bouras , Omar Kherad

[Inappropriate red blood cells transfusion].

Revue medicale suisse

Avec: Laura Dubas , Dimitri Roustan , Omar Kherad

[Computed tomography (CT) utility for diagnosis and triage during COVID-19 pandemic].

Revue medicale suisse

Avec: Omar Kherad , Mallory Moret Bochatay , Thierry Fumeaux

[Sleep disturbances related to nocturnal nuisances in elderly inpatients].

Revue medicale suisse

Avec: Bianca Gagliardi , Virginie Luscher , Yannick Monin , Omar Kherad , Liz Coronado

Unenhanced computed tomography (CT) utility for triage at the emergency department during COVID-19 pandemic.

The American journal of emergency medicine

Avec: Ioannis Skalidis , Vinh Kim Nguyen , Hugo Bothorel , Lauriane Poli , Rui Ribeiro Da Costa , Alain Bigin Younossian , Nicole Petriccioli , Omar Kherad

[Point-of-care ultrasound for the diagnosis of small bowel occlusion: practical implications for emergency and primary care use].

Revue medicale suisse

Avec: Dimitri Roustan , Omar Kherad , Yannick Lebret

Persistence of anti-SARS-CoV-2 antibodies: immunoassay heterogeneity and implications for serosurveillance.

Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases

Avec: Javier Perez-Saez , María-Eugenia Zaballa , Sabine Yerly , Diego O Andrey , Benjamin Meyer , Isabella Eckerle , Jean-François Balavoine , François Chappuis , Didier Pittet , Didier Trono , Omar Kherad , Nicolas Vuilleumier , Laurent Kaiser , Idris Guessous , Silvia Stringhini , Andrew S Azman , Auteur inconnu

Specchio-COVID19 cohort study: a longitudinal follow-up of SARS-CoV-2 serosurvey participants in the canton of Geneva, Switzerland.

BMJ open

Avec: Helene Baysson , Francesco Pennachio , Ania Wisniak , Maria Eugenia Zabella , Nick Pullen , Prune Collombet , Elsa Lorthe , Stéphane Joost , Jean-Francois Balavoine , Delphine Bachmann , Andrew Azman , Didier Pittet , François Chappuis , Omar Kherad , Laurent Kaiser , Idris Guessous , Silvia Stringhini , Auteur inconnu

[Vitamin D intoxication and "milk alkali syndrome"].

Revue medicale suisse

Avec: Luc Bovet , Léa Roth , Omar Kherad

[The use of ultrasound in IBD: an essential tool?]

Revue medicale suisse

Avec: Catherine Paschoud , Julie Pillet , Omar Kherad , Sophie Restellini

Systematic review with meta-analysis: limited benefits from early colonoscopy in acute lower gastrointestinal bleeding.

Alimentary pharmacology & therapeutics

Avec: Omar Kherad , Sophie Restellini , Majid Almadi , Lisa L Strate , Charles Ménard , Myriam Martel , Ira Roshan Afshar , Mohamad Seyed Sadr , Alan N Barkun

The challenge of implementing Less is More medicine: A European perspective.

European journal of internal medicine

Avec: Omar Kherad , Nathan Peiffer-Smadja , Lina Karlafti , Margus Lember , Nathalie Van Aerde , Orvar Gunnarsson , Cristian Baicus , Miguel Bigotte Vieira , António Vaz-Carneiro , Antonio Brucato , Ivica Lazurova , Wiktoria Leśniak , Thomas Hanslik , Stephen Hewitt , Eleni Papanicolaou , Olga Boeva , Dror Dicker , Biljana Ivanovska , Pinar Yldiz , Patrick Lacor , Mark Cranston , Frauke Weidanz , Giorgio Costantino , Nicola Montano

Faecal Calprotectin Predicts Endoscopic and Histological Activity in Clinically Quiescent Ulcerative Colitis.

Journal of Crohn's & colitis

Avec: Lara Hart , Mallory Chavannes , Omar Kherad , Chelsea Maedler , Nathalie Mourad , Victoria Marcus , Waqqas Afif , Alain Bitton , Peter L Lakatos , Paul Brassard , Talat Bessissow

Cancer-associated retinopathy preceding the diagnosis of a pulmonary carcinoid tumour.

BMJ case reports

Avec: Geoffrey Merle , Edoardo Baglivo , Alain B Younossian , Sandrine Vijgen , Wolfram Karenovics , Omar Kherad

Physician Assessment and Feedback During Quality Circle to Reduce Low-Value Services in Outpatients: a Pre-Post Quality Improvement Study.

Journal of general internal medicine

Avec: Omar Kherad , Kevin Selby , Myriam Martel , Henrique da Costa , Yann Vettard , Philippe Schaller , Marc-André Raetzo

[Indirect consequences of PSA testing for prostate cancer screening].

Revue medicale suisse

Avec: Roxane Naïmi , Marc Senglet , Arachk De Gorski , Omar Kherad

[Management of hypertension in hospitalized patients].

Revue medicale suisse

Avec: Maryline Studer , Olivier Heimer , Omar Kherad

Large variation in anti-SARS-CoV-2 antibody prevalence among essential workers in Geneva, Switzerland.

Nature communications

Avec: Silvia Stringhini , María-Eugenia Zaballa , Nick Pullen , Carlos de Mestral , Javier Perez-Saez , Roxane Dumont , Attilio Picazio , Francesco Pennacchio , Yaron Dibner , Sabine Yerly , Helene Baysson , Nicolas Vuilleumier , Jean-François Balavoine , Delphine Bachmann , Didier Trono , Didier Pittet , François Chappuis , Omar Kherad , Laurent Kaiser , Andrew S Azman , Auteur inconnu , Idris Guessous

Occupational risk of SARS-CoV-2 infection and reinfection during the second pandemic surge: a cohort study.

Occupational and environmental medicine

Avec: Antonio Leidi , Amandine Berner , Roxane Dumont , Richard Dubos , Flora Koegler , Giovanni Piumatti , Nicolas Vuilleumier , Laurent Kaiser , Jean-François Balavoine , Didier Trono , Didier Pittet , François Chappuis , Omar Kherad , Delphine Sophie Courvoisier , Andrew S Azman , Maria Eugenia Zaballa , Idris Guessous , Silvia Stringhini , Auteur inconnu

Implementing a Multifaceted Intervention among Internal Medicine Residents with Audit and Educative Data Feedback Significantly Reduces Low-Value Care in Hospitalized Patients.

Journal of clinical medicine

Avec: Omar Kherad , Ezra Bottequin , Dorsaf Steiner , Axelle Alibert , Rodolphe Eurin , Hugo Bothorel

Association between SARS-CoV-2 Seroprevalence in Nursing Home Staff and Resident COVID-19 Cases and Mortality: A Cross-Sectional Study.

Viruses

Avec: Ania Wisniak , Lakshmi Krishna Menon , Roxane Dumont , Nick Pullen , Simon Regard , Richard Dubos , María-Eugenia Zaballa , Hélène Baysson , Delphine Courvoisier , Laurent Kaiser , Didier Pittet , Andrew S Azman , Silvia Stringhini , Idris Guessous , Jean-François Balavoine , Omar Kherad , The SEROCoV-Work Study Group

[Acute hepatitis as an inaugural presentation of systemic lupus erythematosus].

Revue medicale suisse

Avec: Juliette Levy , Damien Polet , Arnaud Dominati , Omar Kherad

Potentially Inappropriate Medication Dispensing in Outpatients: Comparison of Different Measurement Approaches.

Risk management and healthcare policy

Avec: Yves Eggli , Patricia Halfon , Minette-Joëlle Zeukeng , Omar Kherad , Philippe Schaller , Marc-André Raetzo , Michael Frédéric Klay , Benoît Marc Favre , Dorian Schaller , Joachim Marti

Réseau de co-auteurs

Silvia Stringhini 8 collaborations

Didier Pittet 8 collaborations

Laurent Kaiser 8 collaborations

Idris Guessous 8 collaborations

None None 8 collaborations

Jean-François Balavoine 7 collaborations

Andrew S Azman 7 collaborations

Sophie Restellini 6 collaborations

María-Eugenia Zaballa 6 collaborations

Nicolas Vuilleumier 6 collaborations

François Chappuis 6 collaborations

Myriam Martel 5 collaborations

Nick Pullen 5 collaborations

Javier Perez-Saez 5 collaborations

Roxane Dumont 5 collaborations

Alan Barkun 4 collaborations

Didier Trono 4 collaborations

Talat Bessissow 3 collaborations

Carlos de Mestral 3 collaborations

Julien Lamour 3 collaborations

Francesco Pennacchio 3 collaborations

Ania Wisniak 3 collaborations

Hélène Baysson 3 collaborations

Elsa Lorthe 3 collaborations

Hugo Bothorel 3 collaborations

Sabine Yerly 3 collaborations

Richard Dubos 3 collaborations

Alain Bitton 2 collaborations

Waqqas Afif 2 collaborations

Peter L Lakatos 2 collaborations

Andrea Jutta Loizeau 2 collaborations

Viviane Richard 2 collaborations

Claire Semaani 2 collaborations

Jennifer Villers 2 collaborations

Dimitri Roustan 2 collaborations

Helene Baysson 2 collaborations

Delphine Bachmann 2 collaborations

Philippe Schaller 2 collaborations

Marc-André Raetzo 2 collaborations

Caroline Gallay 1 collaboration

Shireen Dumont 1 collaboration

Jérôme Bertrand 1 collaboration

Christophe Fehlmann 1 collaboration

Olivier Grosgurin 1 collaboration

François Sarasin 1 collaboration

Michael Sey 1 collaboration

Michael F Murphy 1 collaboration

Kathryn Oakland 1 collaboration

Vipul Jairath 1 collaboration

Che-Yung Chao 1 collaboration

Ernest Seidman 1 collaboration

Gary Wild 1 collaboration

Aurélio Restellini 1 collaboration

Stefan Kaiser 1 collaboration

Mohamed Ahmed Sugulle 1 collaboration

Line Mahfouz 1 collaboration

Klara Posfay-Barbe 1 collaboration

Pablo Diaz Badial 1 collaboration

Philippe Dussoix 1 collaboration

Faustine Tallonneau Bory 1 collaboration

Majd Ramlawi 1 collaboration

Antonio Vaz Carneiro 1 collaboration

Marcel Tomaszewski 1 collaboration

Marc Bienz 1 collaboration

Tania Laflèche 1 collaboration

Margaret Warner 1 collaboration

Christophe L Bertin 1 collaboration

Simon Ponthus 1 collaboration

Hari Vivekanantham 1 collaboration

Pierre-Alexandre Poletti 1 collaboration

Olivier T Rutschmann 1 collaboration

Magdalena Schellongova 1 collaboration

Lena Groenendijk 1 collaboration

Delphine S Courvoisier 1 collaboration

Priscilla Turelli 1 collaboration

Charlène Raclot 1 collaboration

Julien Duc 1 collaboration

Clément Graindorge 1 collaboration

Manuel Schibler 1 collaboration

Klara M Posfay-Barbe 1 collaboration

Mohamed Asrih 1 collaboration

Daniele Allali 1 collaboration

Pierre-Henri Morère 1 collaboration

Pierre Guibert 1 collaboration

Liv Mahler 1 collaboration

Kenza Bouras 1 collaboration

Laura Dubas 1 collaboration

Mallory Moret Bochatay 1 collaboration

Thierry Fumeaux 1 collaboration

Bianca Gagliardi 1 collaboration

Virginie Luscher 1 collaboration

Yannick Monin 1 collaboration

Liz Coronado 1 collaboration

Ioannis Skalidis 1 collaboration

Vinh Kim Nguyen 1 collaboration

Lauriane Poli 1 collaboration

Rui Ribeiro Da Costa 1 collaboration

Alain Bigin Younossian 1 collaboration

Nicole Petriccioli 1 collaboration

Yannick Lebret 1 collaboration

Diego O Andrey 1 collaboration

Benjamin Meyer 1 collaboration

Isabella Eckerle 1 collaboration

Francesco Pennachio 1 collaboration

Maria Eugenia Zabella 1 collaboration

Prune Collombet 1 collaboration

Stéphane Joost 1 collaboration

Jean-Francois Balavoine 1 collaboration

Andrew Azman 1 collaboration

Luc Bovet 1 collaboration

Léa Roth 1 collaboration

Catherine Paschoud 1 collaboration

Julie Pillet 1 collaboration

Majid Almadi 1 collaboration

Lisa L Strate 1 collaboration

Charles Ménard 1 collaboration

Ira Roshan Afshar 1 collaboration

Mohamad Seyed Sadr 1 collaboration

Alan N Barkun 1 collaboration

Nathan Peiffer-Smadja 1 collaboration

Lina Karlafti 1 collaboration

Margus Lember 1 collaboration

Nathalie Van Aerde 1 collaboration

Orvar Gunnarsson 1 collaboration

Cristian Baicus 1 collaboration

Miguel Bigotte Vieira 1 collaboration

António Vaz-Carneiro 1 collaboration

Antonio Brucato 1 collaboration

Ivica Lazurova 1 collaboration

Wiktoria Leśniak 1 collaboration

Thomas Hanslik 1 collaboration

Stephen Hewitt 1 collaboration

Eleni Papanicolaou 1 collaboration

Olga Boeva 1 collaboration

Dror Dicker 1 collaboration

Biljana Ivanovska 1 collaboration

Pinar Yldiz 1 collaboration

Patrick Lacor 1 collaboration

Mark Cranston 1 collaboration

Frauke Weidanz 1 collaboration

Giorgio Costantino 1 collaboration

Nicola Montano 1 collaboration

Lara Hart 1 collaboration

Mallory Chavannes 1 collaboration

Chelsea Maedler 1 collaboration

Nathalie Mourad 1 collaboration

Victoria Marcus 1 collaboration

Paul Brassard 1 collaboration

Geoffrey Merle 1 collaboration

Edoardo Baglivo 1 collaboration

Alain B Younossian 1 collaboration

Sandrine Vijgen 1 collaboration

Wolfram Karenovics 1 collaboration

Kevin Selby 1 collaboration

Henrique da Costa 1 collaboration

Yann Vettard 1 collaboration

Roxane Naïmi 1 collaboration

Marc Senglet 1 collaboration

Arachk De Gorski 1 collaboration

Maryline Studer 1 collaboration

Olivier Heimer 1 collaboration

Attilio Picazio 1 collaboration

Yaron Dibner 1 collaboration

Antonio Leidi 1 collaboration

Amandine Berner 1 collaboration

Flora Koegler 1 collaboration

Giovanni Piumatti 1 collaboration

Delphine Sophie Courvoisier 1 collaboration

Maria Eugenia Zaballa 1 collaboration

Ezra Bottequin 1 collaboration

Dorsaf Steiner 1 collaboration

Axelle Alibert 1 collaboration

Rodolphe Eurin 1 collaboration

Lakshmi Krishna Menon 1 collaboration

Simon Regard 1 collaboration

Delphine Courvoisier 1 collaboration

None The SEROCoV-Work Study Group 1 collaboration

Juliette Levy 1 collaboration

Damien Polet 1 collaboration

Arnaud Dominati 1 collaboration

Yves Eggli 1 collaboration

Patricia Halfon 1 collaboration

Minette-Joëlle Zeukeng 1 collaboration

Michael Frédéric Klay 1 collaboration

Benoît Marc Favre 1 collaboration

Dorian Schaller 1 collaboration

Joachim Marti 1 collaboration