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Du W, Ge MW, Hu FH, Jia YJ, Zhao DY, Cheng YJ, Chen HL. QTc prolongation in patients with schizophrenia taking antipsychotics: Prevalence and risk factors. J Psychopharmacol 2023; 37:971-981. [PMID: 37534722 DOI: 10.1177/02698811231190864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
BACKGROUND QTc prolongation is one of the possible complications in patients with schizophrenia taking antipsychotics, which leads to malignant cardiac arrhythmia. No meta-analysis has been reported assessing the prevalence and correlated risk factors for QTc prolongation. METHODS This meta-analysis aimed to assess the evidence for the prevalence of QTc prolongation and correlated risk factors in patients with schizophrenia taking antipsychotics. Web of Science and PubMed were searched according to preset strategy. The quality of research was assessed by the Newcastle-Ottawa Scale (NOS). RESULTS In all, 15 studies covering 15,540 patients with schizophrenia taking antipsychotics were included. Meta-analysis showed that the prevalence of QTc prolongation in patients with schizophrenia taking antipsychotics was about 4.0% (95% confidence interval (CI): 3.0%-5.0%, p < 0.001). The prevalence was about 4.0% in Asia (95%CI: 3.0%-6.0%, p < 0.001), about 5.0% in Europe (95%CI: 2.0%-7.0%, p < 0.001), and about 2.0% in America (95%CI: 1.0%-3.0%, p < 0.001). Sensitivity analyses indicated the robustness of the result. Publication bias analysis reported a certain publication bias (t = 3.37, p = 0.012). Meta-regression suggested that female and elderly patients were clinically associated with a higher prevalence of QTc prolongation. According to included studies, smoking, comorbidity of cardiovascular disease, and abnormal levels of high-density lipoprotein/low-density lipoprotein might be related to QTc prolongation in patients with schizophrenia taking antipsychotics. CONCLUSIONS The prevalence of QTc prolongation in patients with schizophrenia taking antipsychotics was about 4.0%. Female and elderly patients were more likely to experience QTc prolongation. Close electrocardiogram monitoring was suggested in these at-risk populations.
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Affiliation(s)
- Wei Du
- School of Medicine, Nantong University, Nantong, Jiangsu, PR China
| | - Meng-Wei Ge
- School of Medicine, Nantong University, Nantong, Jiangsu, PR China
| | - Fei-Hong Hu
- School of Medicine, Nantong University, Nantong, Jiangsu, PR China
| | - Yi-Jie Jia
- School of Medicine, Nantong University, Nantong, Jiangsu, PR China
| | - Dan-Yan Zhao
- School of Medicine, Nantong University, Nantong, Jiangsu, PR China
| | - Yu-Jie Cheng
- School of Medicine, Nantong University, Nantong, Jiangsu, PR China
| | - Hong-Lin Chen
- School of Public Health, Nantong University, Nantong, Jiangsu, PR China
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Skalafouris C, Samer C, Stirnemann J, Grosgurin O, Eggimann F, Grauser D, Reny JL, Bonnabry P, Guignard B. Electronic monitoring of potential adverse drug events related to lopinavir/ritonavir and hydroxychloroquine during the first wave of COVID-19. Eur J Hosp Pharm 2023; 30:113-116. [PMID: 33832918 PMCID: PMC9986913 DOI: 10.1136/ejhpharm-2020-002667] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/02/2021] [Accepted: 03/09/2021] [Indexed: 11/04/2022] Open
Abstract
During Switzerland's first wave of COVID-19, clinical pharmacy activities during medical rounds in Geneva University Hospitals were replaced by targeted remote interventions. We describe using the electronic PharmaCheck system to screen high-risk situations of adverse drug events (ADEs), particularly targeting prescriptions of lopinavir/ritonavir (LPVr) and hydroxychloroquine (HCQ) in the presence of contraindications or prescriptions outside institutional guidelines. Of 416 patients receiving LPVr and/or HCQ, 182 alerts were triggered for 164 (39.4%) patients. The main associated risk factors of ADEs were drug-drug interactions, QTc interval prolongation, electrolyte disorder and inadequate LPVr dosage. Therapeutic optimisation recommended by a pharmacist or proposals for additional monitoring were accepted in 80% (n=36) of cases. Combined with pharmacist contextualisation to the clinical context, PharmaCheck made it possible to successfully adapt clinical pharmacist activities by switching from a global to a targeted analysis mode in an emergency context.
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Affiliation(s)
- Christian Skalafouris
- Pharmacy, Geneva University Hospitals, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), School of pharmaceutical sciences, University of Geneva, Geneva, Switzerland
| | - Caroline Samer
- Clinical Pharmacology and Toxicology Division, Geneva University Hospitals, Geneva, Switzerland
| | - Jerome Stirnemann
- General Internal Medicine Division, Geneva University Hospitals, Geneve, Switzerland
| | - Olivier Grosgurin
- General Internal Medicine Division, Geneva University Hospitals, Geneve, Switzerland
| | - François Eggimann
- Information Systems Department, Geneva University Hospitals, Geneva, Switzerland
| | - Damien Grauser
- Information Systems Department, Geneva University Hospitals, Geneva, Switzerland
| | - Jean-Luc Reny
- General Internal Medicine Division, Geneva University Hospitals, Geneve, Switzerland
| | - Pascal Bonnabry
- Pharmacy, Geneva University Hospitals, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), School of pharmaceutical sciences, University of Geneva, Geneva, Switzerland
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3
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Moderately Prolonged QTc in Computer-Assessed ECG, Random Variation or Significant Risk Factor? A Literature Review. CARDIOGENETICS 2022. [DOI: 10.3390/cardiogenetics12030025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Most ECGs in European hospitals are recorded with equipment giving computer measured intervals and interpretation of the recording. In addition to measurements of interval and QRS axis, this interpretation frequently provides the Bazett’s-corrected QTc time. The introduction of computer-corrected QTc revealed QTc prolongation to be a frequent condition among medical patients. Nevertheless, the finding is frequently overlooked by the treating physician. The authors combine experience from a local hospital with a review of the current literature in this field in order to elucidate the importance of this risk factor both as congenital long QT syndrome and as acquired QT prolongation.
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Yazdanpanah MH, Naghizadeh MM, Sayyadipoor S, Farjam M. The best QT correction formula in a non-hospitalized population: the Fasa PERSIAN cohort study. BMC Cardiovasc Disord 2022; 22:52. [PMID: 35172723 PMCID: PMC8851728 DOI: 10.1186/s12872-022-02502-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 02/08/2022] [Indexed: 01/08/2023] Open
Abstract
Background QT interval as an indicator of ventricular repolarization is a clinically important parameter on an electrocardiogram (ECG). QT prolongation predisposes individuals to different ventricular arrhythmias and sudden cardiac death. The current study aimed to identify the best heart rate corrected QT interval for a non-hospitalized Iranian population based on cardiovascular mortality.
Methods Using Fasa PERSIAN cohort study data, this study enrolled 7071 subjects aged 35–70 years. Corrected QT intervals (QTc) were calculated by the QT interval measured by Cardiax® software from ECGs and 6 different correction formulas (Bazett, Fridericia, Dmitrienko, Framingham, Hodges, and Rautaharju). Mortality status was checked using an annual telephone-based follow-up and a minimum 3-year follow-up for each participant. Bland–Altman, QTc/RR regression, sensitivity analysis, and Cox regression were performed in IBM SPSS Statistics v23 to find the best QT. Also, for calculating the upper and lower limits of normal of different QT correction formulas, 3952 healthy subjects were selected. Results In this study, 56.4% of participants were female, and the mean age was 48.60 ± 9.35 years. Age, heart rate in females, and QT interval in males were significantly higher. The smallest slopes of QTc/RR analysis were related to Fridericia in males and Rautaharju followed by Fridericia in females. Thus, Fridericia’s formula was identified as the best mathematical formula and Bazett’s as the worst in males. In the sensitivity analysis, however, Bazett’s formula had the highest sensitivity (23.07%) among all others in cardiac mortality. Also, in the Cox regression analysis, Bazett’s formula was better than Fridericia’s and was identified as the best significant cardiac mortality predictor (Hazard ratio: 4.31, 95% CI 1.73–10.74, p value = 0.002). Conclusion Fridericia was the best correction formula based on mathematical methods. Bazett’s formula despite its poorest performance in mathematical methods, was the best one for cardiac mortality prediction. Practically, it is suggested that physicians use QTcB for a better evaluation of cardiac mortality risk. However, in population-based studies, QTcFri might be the one to be used by researchers. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-022-02502-2.
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Affiliation(s)
- Mohammad Hosein Yazdanpanah
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Ibn-Sina Square, P.O. Box: 74616-86688, Fasa, Fars, Iran.,Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mehdi Naghizadeh
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Ibn-Sina Square, P.O. Box: 74616-86688, Fasa, Fars, Iran
| | | | - Mojtaba Farjam
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Ibn-Sina Square, P.O. Box: 74616-86688, Fasa, Fars, Iran.
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Saad S, Delouya G, Lambert C, Barkati M, Dariane C, Laskine M, Taussky D. Prevalence and risk factors of QTc prolongation in prostate cancer patients undergoing brachytherapy. Cancer Invest 2022; 40:219-227. [PMID: 35000504 DOI: 10.1080/07357907.2022.2027435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
QTc prolongation is linked to Torsade de Pointes, sudden cardiac death, and overall cardiovascular mortality. 754 prostate cancer patients undergoing brachytherapy were analyzed, prolonged QTc was defined as ≥450ms. A prolonged QTc was more frequent (10.1% vs 5.1%, p = 0.040) in patients with high-risk cancer than in low to intermediate risk patients. The absolute QTc-time was correlated with age (r = 0.125), neutrophil count (r = 0.130) and negatively correlated with the testosterone level (r=-0.205). Treating physicians should be aware of this and monitor the QTc during ADT to possibly decrease cardiac morbidity/mortality in these patients who are more likely to require ADT.
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Affiliation(s)
- Simon Saad
- Department of Radiation Oncology, University of Montreal Health Center, Montreal, Canada
| | - Guila Delouya
- Department of Radiation Oncology, University of Montreal Health Center, Montreal, Canada.,CRCHUM-Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - Carole Lambert
- Department of Radiation Oncology, University of Montreal Health Center, Montreal, Canada.,CRCHUM-Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - Maroie Barkati
- Department of Radiation Oncology, University of Montreal Health Center, Montreal, Canada.,CRCHUM-Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - Charles Dariane
- Department of Urology, University of Montreal Health Center, Montreal, Canada.,Department of Urology, Hôpital européen Georges-Pompidou, Paris University, Paris, France
| | - Mikhael Laskine
- CRCHUM-Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada.,Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Daniel Taussky
- Department of Radiation Oncology, University of Montreal Health Center, Montreal, Canada.,CRCHUM-Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Canada
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Wolff J, Reißner P, Hefner G, Normann C, Kaier K, Binder H, Hiemke C, Toto S, Domschke K, Marschollek M, Klimke A. Pharmacotherapy, drug-drug interactions and potentially inappropriate medication in depressive disorders. PLoS One 2021; 16:e0255192. [PMID: 34293068 PMCID: PMC8297778 DOI: 10.1371/journal.pone.0255192] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 07/11/2021] [Indexed: 12/24/2022] Open
Abstract
Introduction The aim of this study was to describe the number and type of drugs used to treat depressive disorders in inpatient psychiatry and to analyse the determinants of potential drug-drug interactions (pDDI) and potentially inappropriate medication (PIM). Methods Our study was part of a larger pharmacovigilance project funded by the German Innovation Funds. It included all inpatients with a main diagnosis in the group of depressive episodes (F32, ICD-10) or recurrent depressive disorders (F33) discharged from eight psychiatric hospitals in Germany between 1 October 2017 and 30 September 2018 or between 1 January and 31 December 2019. Results The study included 14,418 inpatient cases. The mean number of drugs per day was 3.7 (psychotropic drugs = 1.7; others = 2.0). Thirty-one percent of cases received at least five drugs simultaneously (polypharmacy). Almost one half of all cases received a combination of multiple antidepressant drugs (24.8%, 95% CI 24.1%–25.5%) or a treatment with antidepressant drugs augmented by antipsychotic drugs (21.9%, 95% CI 21.3%–22.6%). The most frequently used antidepressants were selective serotonin reuptake inhibitors, followed by serotonin and norepinephrine reuptake inhibitors and tetracyclic antidepressants. In multivariate analyses, cases with recurrent depressive disorders and cases with severe depression were more likely to receive a combination of multiple antidepressant drugs (Odds ratio recurrent depressive disorder: 1.56, 95% CI 1.41–1.70, severe depression 1.33, 95% CI 1.18–1.48). The risk of any pDDI and PIM in elderly patients increased substantially with each additional drug (Odds Ratio: pDDI 1.32, 95% CI: 1.27–1.38, PIM 1.18, 95% CI: 1.14–1.22) and severity of disease (Odds Ratio per point on CGI-Scale: pDDI 1.29, 95% CI: 1.11–1.46, PIM 1.27, 95% CI: 1.11–1.44), respectively. Conclusion This study identified potential sources and determinants of safety risks in pharmacotherapy of depressive disorders and provided additional data which were previously unavailable. Most inpatients with depressive disorders receive multiple psychotropic and non-psychotropic drugs and pDDI and PIM are relatively frequent. Patients with a high number of different drugs must be intensively monitored in the management of their individual drug-related risk-benefit profiles.
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Affiliation(s)
- Jan Wolff
- Peter L. Reichertz Institute for Medical Informatics of TU Braunschweig and Hannover Medical School, Hannover, Germany
- Faculty of Medicine, Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany
- Evangelical Foundation Neuerkerode, Braunschweig, Germany
- * E-mail: ,
| | | | - Gudrun Hefner
- Vitos Clinic for Forensic Psychiatry, Eltville, Germany
| | - Claus Normann
- Faculty of Medicine, Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Klaus Kaier
- Faculty of Medicine, Institute of Medical Biometry and Statistics, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Harald Binder
- Faculty of Medicine, Institute of Medical Biometry and Statistics, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Christoph Hiemke
- Department of Psychiatry and Psychotherapy, University Medical Center Mainz, Mainz, Germany
| | - Sermin Toto
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Katharina Domschke
- Faculty of Medicine, Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany
| | - Michael Marschollek
- Peter L. Reichertz Institute for Medical Informatics of TU Braunschweig and Hannover Medical School, Hannover, Germany
| | - Ansgar Klimke
- Vitos Hochtaunus, Friedrichsdorf, Germany
- Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
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7
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Wolff J, Hefner G, Normann C, Kaier K, Binder H, Hiemke C, Toto S, Domschke K, Marschollek M, Klimke A. Polypharmacy and the risk of drug-drug interactions and potentially inappropriate medications in hospital psychiatry. Pharmacoepidemiol Drug Saf 2021; 30:1258-1268. [PMID: 34146372 DOI: 10.1002/pds.5310] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 05/27/2021] [Accepted: 06/09/2021] [Indexed: 12/28/2022]
Abstract
PURPOSE The aim of this study was to analyze the epidemiology of polypharmacy in hospital psychiatry. Another aim was to investigate predictors of the number of drugs taken and the associated risks of drug-drug interactions and potentially inappropriate medications in the elderly. METHODS Daily prescription data were obtained from a pharmacovigilance project sponsored by the Innovations Funds of the German Federal Joint Committee. RESULTS The study included 47 071 inpatient hospital cases from eight different study centers. The mean number of different drugs during the entire stay was 6.1 (psychotropic drugs = 2.7; others = 3.4). The mean number of drugs per day was 3.8 (psychotropic drugs = 1.6; others = 2.2). One third of cases received at least five different drugs per day on average during their hospital stay (polypharmacy). Fifty-one percent of patients received more than one psychotropic drug simultaneously. Hospital cases with polypharmacy were 18 years older (p < 0.001), more likely to be female (52% vs. 40%, p < 0.001) and had more comorbidities (5 vs. 2, p < 0.001) than hospital cases without polypharmacy. The risks of drug-drug interactions (OR = 3.7; 95% CI = 3.5-3.9) and potentially inappropriate medication use in the elderly (OR = 2.2; CI = 1.9-2.5) substantially increased in patients that received polypharmacy. CONCLUSION Polypharmacy is frequent in clinical care. The number of used drugs is a proven risk factor of adverse drug reactions due to drug-drug interactions and potentially inappropriate medication use in the elderly. The potential interactions and the specific pharmacokinetics and -dynamics of older patients should always be considered when multiple drugs are used.
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Affiliation(s)
- Jan Wolff
- Peter L. Reichertz Institute for Medical Informatics of TU Braunschweig and Hannover Medical School, Hannover, Germany.,Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Evangelical Foundation Neuerkerode, Braunschweig, Germany
| | - Gudrun Hefner
- Vitos Clinic for Forensic Psychiatry, Eltville, Germany
| | - Claus Normann
- Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Klaus Kaier
- Institute of Medical Biometry and Statistics, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Harald Binder
- Institute of Medical Biometry and Statistics, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Hiemke
- Department of Psychiatry and Psychotherapy, University Medical Center, Mainz, Germany
| | - Sermin Toto
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Katharina Domschke
- Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Michael Marschollek
- Peter L. Reichertz Institute for Medical Informatics of TU Braunschweig and Hannover Medical School, Hannover, Germany
| | - Ansgar Klimke
- Vitos Hochtaunus gemeinnutzige GmbH, Friedrichsdorf, Germany.,Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
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Different body parts' fat mass and corrected QT interval on the electrocardiogram: The Fasa PERSIAN Cohort Study. BMC Cardiovasc Disord 2021; 21:277. [PMID: 34090333 PMCID: PMC8178852 DOI: 10.1186/s12872-021-02095-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 06/01/2021] [Indexed: 11/15/2022] Open
Abstract
Background Previous studies suggested that obesity and fat mass are associated with QT interval prolongation, but the role of different body parts' fat mass is unclear. The associations between total and regional fat mass (FM) and corrected QT interval (QTc) were investigated for the first time in this study.
Methods In this sub-analysis of Fasa PERSIAN cohort Study data, 3217 subjects aged 35–70 entered our study. Body fat mass was assessed by bioelectrical impedance analysis and QTc interval calculated by the QT interval measured by Cardiax® software from ECGs and Bazett’s formula. Uni- and multi-variable linear and logistic regression was performed in IBM SPSS Statistics v23. Results In males, the fat mass to fat-free mass (FM/FFM) ratio in the trunk, arms, total body, and legs were significantly higher in the prolonged QTc group (QTc > 450 ms). Trunk (B = 0.148), total (B = 0.137), arms (B = 0.124), legs (B = 0.107) fat mass index (FMI) showed significant positive relationship with continuous QTc (P-value < 0.001). Also, just the fat-free mass index of legs had significant positive associations with QTc interval (P-value < 0.05). Surprisingly, in females, the mean of FM/FFM ratio in trunk and legs in the normal QTc group had higher values than the prolonged QTc group (QTc > 470 ms). Also, none of the body composition variables had a significant correlation with continuous QTc. Conclusion Our study suggested that FMI ratios in the trunk, total body, arms, and legs were positively associated with QTc interval in males, respectively, from a higher to a lower beta-coefficient. Such associations were not seen in females. Our study implies that body fat mass may be an independent risk factor for higher QTc interval and, consequently, more cardiovascular events that should be investigated. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-021-02095-2.
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Drug-Associated QTc Prolongation in Geriatric Hospitalized Patients: A Cross-Sectional Study in Internal Medicine. Drugs Real World Outcomes 2021; 8:325-335. [PMID: 33834380 PMCID: PMC8324728 DOI: 10.1007/s40801-021-00234-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2021] [Indexed: 01/08/2023] Open
Abstract
Objective The primary objectives of this prospective cross-sectional study were to estimate the prevalence of drug-related long QT syndrome (LQTS) and the prevalence of use of QT-prolonging drugs in older patients admitted to an internal medicine unit. Methods We screened consecutive patients hospitalized in an internal medicine unit over a 2-year period. A 12-lead electrocardiogram using an electrocardiograph with automated measurement of QT interval was recorded. Patient characteristics (age, sex, body mass index), drug treatments, and variables associated with QT interval prolongation, including hypothyroidism, type 2 diabetes mellitus, and cardiac disease, were also recorded. In addition, we also measured serum levels of potassium, calcium, magnesium, and creatinine at admission. The list of medications known to cause or to contribute to LQTS was obtained from CredibleMeds®. Results A total of 243 patients were enrolled: mean ± standard deviation age, 79.65 ± 8.27 years; males, n = 121 (40.8%); mean corrected QT (QTc) interval, 453.70 ± 43.77 ms. Overall, 89/243 (36.6%) patients had a prolonged QTc interval, with 29/243 (11.9%) having QTc interval prolongation > 500 ms (11.9%). A vast majority were prescribed at least one QT-prolonging drug (218/243 [89.7%]), whereas 74/218 (30.5%) were receiving at least one medication with a known risk of Torsades des Pointes (TdP). Proton pump inhibitors were the second most commonly prescribed class of drugs. After logistic regression, male sex was independently associated with LQTS (odds ratio 2.85; 95% confidence interval 1.56–5.22; p = 0.001). Conclusions The prevalence of LQTS with QTc interval > 500 ms in geriatric inpatients was > 10%, and QT-prolonging drugs were frequently used on admission (more than 30% of patients were receiving drugs with a known risk of TdP). Supplementary Information The online version contains supplementary material available at 10.1007/s40801-021-00234-x.
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Wolff J, Hefner G, Normann C, Kaier K, Binder H, Domschke K, Hiemke C, Marschollek M, Klimke A. Predicting the risk of drug-drug interactions in psychiatric hospitals: a retrospective longitudinal pharmacovigilance study. BMJ Open 2021; 11:e045276. [PMID: 33837103 PMCID: PMC8043005 DOI: 10.1136/bmjopen-2020-045276] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVES The aim was to use routine data available at a patient's admission to the hospital to predict polypharmacy and drug-drug interactions (DDI) and to evaluate the prediction performance with regard to its usefulness to support the efficient management of benefits and risks of drug prescriptions. DESIGN Retrospective, longitudinal study. SETTING We used data from a large multicentred pharmacovigilance project carried out in eight psychiatric hospitals in Hesse, Germany. PARTICIPANTS Inpatient episodes consecutively discharged between 1 October 2017 and 30 September 2018 (year 1) or 1 January 2019 and 31 December 2019 (year 2). OUTCOME MEASURES The proportion of rightly classified hospital episodes. METHODS We used gradient boosting to predict respective outcomes. We tested the performance of our final models in unseen patients from another calendar year and separated the study sites used for training from the study sites used for performance testing. RESULTS A total of 53 909 episodes were included in the study. The models' performance, as measured by the area under the receiver operating characteristic, was 'excellent' (0.83) and 'acceptable' (0.72) compared with common benchmarks for the prediction of polypharmacy and DDI, respectively. Both models were substantially better than a naive prediction based solely on basic diagnostic grouping. CONCLUSION This study has shown that polypharmacy and DDI can be predicted from routine data at patient admission. These predictions could support an efficient management of benefits and risks of hospital prescriptions, for instance by including pharmaceutical supervision early after admission for patients at risk before pharmacological treatment is established.
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Affiliation(s)
- Jan Wolff
- Peter L. Reichertz Institute for Medical Informatics, Hannover Medical School, Hannover, Germany
- Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Freiburg, Germany
| | - Gudrun Hefner
- Vitos Clinic for Forensic Psychiatry, Vitos Rheingau, Eltville, Germany
| | - Claus Normann
- Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Freiburg, Germany
| | - Klaus Kaier
- Institute for Medical Biometry and Statistics, Medical Center-University of Freiburg, Freiburg, Germany
| | - Harald Binder
- Institute for Medical Biometry and Statistics, Medical Center-University of Freiburg, Freiburg, Germany
| | - Katharina Domschke
- Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Freiburg, Germany
| | - Christoph Hiemke
- Department of Psychiatry and Psychotherapy, University Medical Center Mainz, Mainz, Germany
| | - Michael Marschollek
- Peter L. Reichertz Institute for Medical Informatics, Hannover Medical School, Hannover, Germany
| | - Ansgar Klimke
- Waldkrankenhaus Köppern, Vitos Hospital Hochtaunus, Friedrichsdorf, Germany
- Department of Psychiatry and Psychotherapy, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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Niimi N, Yuki K, Zaleski K. Long QT Syndrome and Perioperative Torsades de Pointes: What the Anesthesiologist Should Know. J Cardiothorac Vasc Anesth 2020; 36:286-302. [PMID: 33495078 DOI: 10.1053/j.jvca.2020.12.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/16/2020] [Accepted: 12/07/2020] [Indexed: 02/08/2023]
Affiliation(s)
- Naoko Niimi
- Department of Anesthesiology, Juntendo University, Tokyo, Japan.
| | - Koichi Yuki
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Boston, MA; Department of Anesthesia, Harvard Medical School, Boston, MA
| | - Katherine Zaleski
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Boston, MA; Department of Anesthesia, Harvard Medical School, Boston, MA
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12
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Chen C, Zhou J, Yu H, Zhang Q, Gao L, Yin X, Dong Y, Lin Y, Li D, Yang Y, Wang Y, Tse G, Xia Y. Identification of important risk factors for all-cause mortality of acquired long QT syndrome patients using random survival forests and non-negative matrix factorization. Heart Rhythm 2020; 18:426-433. [PMID: 33127541 DOI: 10.1016/j.hrthm.2020.10.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/02/2020] [Accepted: 10/25/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Acquired long QT syndrome (aLQTS) is often associated with poor clinical outcomes. OBJECTIVE The purpose of this study was to examine the important predictors of all-cause mortality of aLQTS patients by applying both random survival forest (RSF) and non-negative matrix factorization (NMF) analyses. METHODS Clinical characteristics and manually measured electrocardiographic (ECG) parameters were initially entered into the RSF model. Subsequently, latent variables identified using NMF were entered into the RSF as additional variables. The primary outcome was all-cause mortality. RESULTS A total of 327 aLQTS patients were included. The RSF model identified 16 predictive factors with positive variable importance values: cancer, potassium, RR interval, calcium, age, JT interval, diabetes mellitus, QRS duration, QTp interval, chronic kidney disease, QTc interval, hypertension, QT interval, female, JTc interval, and cerebral hemorrhage. Increasing the number of latent features between ECG indices, which incorporated from n = 0 to n = 4 by NMF, maximally improved the prediction ability of the RSF-NMF model (C-statistic 0.77 vs 0.89). CONCLUSION Cancer and serum potassium and calcium levels can predict all-cause mortality of aLQTS patients, as can ECG indicators including JTc and QRS. The present RSF-NMF model significantly improved mortality prediction.
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Affiliation(s)
- Cheng Chen
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jiandong Zhou
- School of Data Science, City University of Hong Kong, Kowloon, China
| | - Haixu Yu
- Department of Cardiology, Peking University Third Hospital, Beijing, China
| | - Qingpeng Zhang
- School of Data Science, City University of Hong Kong, Kowloon, China
| | - Lianjun Gao
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiaomeng Yin
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yingxue Dong
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yajuan Lin
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Daobo Li
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yiheng Yang
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yunsong Wang
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Gary Tse
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China.
| | - Yunlong Xia
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China.
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13
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Vohra J. Sudden Cardiac Death in Schizophrenia: A Review. Heart Lung Circ 2020; 29:1427-1432. [DOI: 10.1016/j.hlc.2020.07.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 01/08/2023]
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14
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Huang Y, Alsabbagh MW. Comparative risk of cardiac arrhythmias associated with acetylcholinesterase inhibitors used in treatment of dementias - A narrative review. Pharmacol Res Perspect 2020; 8:e00622. [PMID: 32691984 PMCID: PMC7372915 DOI: 10.1002/prp2.622] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 12/15/2022] Open
Abstract
Donepezil, galantamine, and rivastigmine are the three acetylcholinesterase inhibitors (AChEIs), out of a total of only four medications prescribed in the treatment of Alzheimer's Disease (AD) and related dementias. These medications are known to be associated with bradycardia given their mechanism of action of increasing acetylcholine (ACh). However, in March 2015, donepezil was added to the CredibleMeds "known-risk" category, a list where medications have a documented risk for acquired long-QT syndrome (ALQTS) and torsades de pointes (TdP) - a malignant ventricular arrhythmia that is a different adverse event than bradycardia (and is not necessarily associated with ACh action). The purpose of this article is to review the three AChEIs, especially with regards to mechanistic differences that may explain why only donepezil poses this risk; several pharmacological mechanisms may explain why. However, from an empirical point-of-view, aside from some case-reports, only a limited number of studies have generated relevant information regarding AChEIs' and electrocardiogram findings; none have specifically compared donepezil against galantamine or rivastigmine for malignant arrhythmias such as TdP. Currently, the choice of one of the three AChEIs for treatment of AD symptoms is primarily dependent upon clinician and patient preference. However, clinicians should be aware of the potential increased risk associated with donepezil. There is a need to examine the comparative risk of malignant arrhythmias among AChEIs users in real-world practice; this may have important implications with regards to changes in AChEI prescribing patterns.
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Affiliation(s)
- Yichang Huang
- School of PharmacyFaculty of ScienceUniversity of WaterlooKitchenerCanada
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15
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Berger FA, van der Sijs H, Becker ML, van Gelder T, van den Bemt PMLA. Development and validation of a tool to assess the risk of QT drug-drug interactions in clinical practice. BMC Med Inform Decis Mak 2020; 20:171. [PMID: 32703198 PMCID: PMC7376881 DOI: 10.1186/s12911-020-01181-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 07/07/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The exact risk of developing QTc-prolongation when using a combination of QTc-prolonging drugs is still unknown, making it difficult to interpret these QT drug-drug interactions (QT-DDIs). A tool to identify high-risk patients is needed to support healthcare providers in handling automatically generated alerts in clinical practice. The main aim of this study was to develop and validate a tool to assess the risk of QT-DDIs in clinical practice. METHODS A model was developed based on risk factors associated with QTc-prolongation determined in a prospective study on QT-DDIs in a university medical center inthe Netherlands. The main outcome measure was QTc-prolongation defined as a QTc interval > 450 ms for males and > 470 ms for females. Risk points were assigned to risk factors based on their odds ratios. Additional risk factors were added based on a literature review. The ability of the model to predict QTc-prolongation was validated in an independent dataset obtained from a general teaching hospital against QTc-prolongation as measured by an ECG as the gold standard. Sensitivities, specificities, false omission rates, accuracy and Youden's index were calculated. RESULTS The model included age, gender, cardiac comorbidities, hypertension, diabetes mellitus, renal function, potassium levels, loop diuretics, and QTc-prolonging drugs as risk factors. Application of the model to the independent dataset resulted in an area under the ROC-curve of 0.54 (95% CI 0.51-0.56) when QTc-prolongation was defined as > 450/470 ms, and 0.59 (0.54-0.63) when QTc-prolongation was defined as > 500 ms. A cut-off value of 6 led to a sensitivity of 76.6 and 83.9% and a specificity of 28.5 and 27.5% respectively. CONCLUSIONS A clinical decision support tool with fair performance characteristics was developed. Optimization of this tool may aid in assessing the risk associated with QT-DDIs. TRIAL REGISTRATION No trial registration, MEC-2015-368.
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Affiliation(s)
- Florine A Berger
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands.
| | - Heleen van der Sijs
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands
| | - Matthijs L Becker
- Pharmacy Foundation of Haarlem Hospitals, Haarlem, the Netherlands
- Department of Clinical Pharmacy, Spaarne Gasthuis, Haarlem, the Netherlands
| | - Teun van Gelder
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands
- Department of Clinical Pharmacy & Toxicology, Leiden University Medical Center, Leiden, the Netherlands
| | - Patricia M L A van den Bemt
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, the Netherlands
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16
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Huang Y, Alsabbagh MW. Estimates of population‐based incidence of malignant arrhythmias associated with medication use—a narrative review. Fundam Clin Pharmacol 2020; 34:418-432. [DOI: 10.1111/fcp.12578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/04/2020] [Accepted: 06/08/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Yichang Huang
- School of Pharmacy Faculty of Science University of Waterloo Room 4015, 10A Victoria St. S. Kitchener ON Canada
| | - Mhd. Wasem Alsabbagh
- School of Pharmacy Faculty of Science University of Waterloo Room 3006, 10A Victoria St. S. Kitchener ON Canada
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17
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Abstract
Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in chronic kidney disease (CKD) patients. QT interval prolongation is a congenital or acquired condition that is associated with an increased risk of torsade de pointes (TdP), sudden cardiac death (SCD), and all-cause mortality in the general population. The prevalence of acquired long QT syndrome (aLQTS) is high, and various acquired conditions contribute to the prolonged QT interval in patients with CKD. More notably, the prolonged QT interval in CKD is an independent risk factor for SCD and all-cause mortality. In this review, we focus on the epidemiological characteristics, risk factors, underlying mechanisms and treatments of aLQTS in CKD, promoting the management of aLQTS in CKD patients.
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Affiliation(s)
- Peng Liu
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China
| | - Lu Wang
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China.,Department of Endocrinology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China
| | - Dan Han
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China
| | - Chaofeng Sun
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China
| | - Xiaolin Xue
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China
| | - Guoliang Li
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China
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18
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Gibbs C, Thalamus J, Heldal K, Holla ØL, Haugaa KH, Hysing J. Predictors of mortality in high-risk patients with QT prolongation in a community hospital. Europace 2019; 20:f99-f107. [PMID: 29036623 DOI: 10.1093/europace/eux286] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/15/2017] [Indexed: 01/08/2023] Open
Abstract
Aims To determine predictors of mortality in patients with corrected QT interval (QTc) ≥ 500 ms in a community hospital. Methods and results In this retrospective observational study, we searched the electrocardiogram (ECG) database at Telemark Hospital Trust, Norway, from January 2004 to December 2014. Medication, electrolyte abnormalities, and medical conditions known to prolong the QT interval were recorded. From the medical records, we assessed whether the prolonged QTc was noted by the health care providers. We identified 1531 patients (age = 70 ± 15 years, 59% female) with an ECG with QTc ≥ 500 ms. All-cause mortality during 952 (range 0-4161) days of follow-up was 50% (n = 765/1531). Main predictors of mortality were aborted cardiac arrest [hazard ratio (HR) 2.40, 95% confidence interval (CI) 1.44-4.01; P = 0.001], cerebral stroke/head trauma (HR 2.28, 95% CI 1.70-3.05; P < 0.001), and heart failure (HR 1.74, 95% CI 1.43-2.12; P< 0.001). Females with prolonged QTc had better survival compared with males (P = 0.006). We constructed a risk-weighted QTc mortality score. QT prolongation was acknowledged in the medical records in 12% of the cases. Conclusions QTc ≥ 500 ms was associated with high all-cause mortality with increased mortality in males compared with females. A new QTc mortality score was constructed to predict mortality. Only a minority of cases with prolonged QTc ≥ 500 ms were acknowledged in the medical records.
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Affiliation(s)
- Charlotte Gibbs
- Clinic of Internal Medicine, Telemark Hospital Trust, Ulefossvegen 55, 3710 Skien, Norway.,Faculty of Medicine, University of Oslo, Klaus Torgårds vei 3, 0372 Oslo, Norway
| | - Jacob Thalamus
- Clinic of Internal Medicine, Telemark Hospital Trust, Ulefossvegen 55, 3710 Skien, Norway
| | - Kristian Heldal
- Clinic of Internal Medicine, Telemark Hospital Trust, Ulefossvegen 55, 3710 Skien, Norway.,Faculty of Medicine, University of Oslo, Klaus Torgårds vei 3, 0372 Oslo, Norway
| | - Øystein Lunde Holla
- Department of Medical Genetics, Telemark Hospital Trust, Ulefossvegen 55, 3710 Skien, Norway
| | - Kristina H Haugaa
- Faculty of Medicine, University of Oslo, Klaus Torgårds vei 3, 0372 Oslo, Norway.,Department of Cardiology, Center for Cardiological Innovation, Institute for Surgical Research, Oslo University Hospital, Sognsvannsveien 9, 0372 Oslo, 0424 Oslo, Norway
| | - Jan Hysing
- Clinic of Internal Medicine, Telemark Hospital Trust, Ulefossvegen 55, 3710 Skien, Norway
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19
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Bo M, Ceccofiglio A, Mussi C, Bellelli G, Nicosia F, Riccio D, Martone AM, Langellotto A, Tonon E, Tava G, Boccardi V, Abete P, Tibaldi M, Aurucci ML, Fonte G, Falcone Y, Ungar A. Prevalence, predictors and clinical implications of prolonged corrected QT in elderly patients with dementia and suspected syncope. Eur J Intern Med 2019; 61:34-39. [PMID: 30482635 DOI: 10.1016/j.ejim.2018.10.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/19/2018] [Accepted: 10/16/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Long QT and use of QT-prolonging drugs are common among older patients receiving polytherapies, but real-world evidence on their impact in clinical practice is controversial. We investigated prevalence, variables associated and clinical implications of prolonged corrected QT (QTc) among patients from the Syncope and Dementia study. METHODS Observational, prospective, multicenter study. Patients≥65 years with dementia and fall suspected for syncope in the previous three months were enrolled. Several clinical variables and the complete list of medications were recorded for each patient. A 12‑lead ECG was obtained and corrected QT was calculated by the Bazett's formula. One-year followup for death and recurrent syncope was performed. RESULTS Prolonged QTc was observed in 25% of the 432 enrolled patients (mean age 83.3), and was significantly associated with male gender (OR 2.09; 95% CI 1.34-3.26) and diuretics use (OR 1.85; 95% CI 1.18-2.90). At one-year 23.3% of patients died and 30.4% reported at least one recurrent event. Variables associated with one-year mortality were: age, male gender, atrial fibrillation (AF), use of calcium channel blockers and prolonged QTc (OR 1.80; 95% CI 1.01-3.20). Among patients with prolonged QTc a significant interaction for mortality was found with AF. Recurrent events were associated with the use of antiplatelets, cholinesterase. inhibitors and antipsychotics, but not with prolonged QTc. CONCLUSIONS We documented a high prevalence of prolonged QTc, that was associated with male gender and diuretics but not with psychoactive medications. Patients with prolonged QTc had higher one-year mortality, that was four-fold increased in those with concomitant AF.
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Affiliation(s)
- Mario Bo
- Section of Geriatrics, Department of Medical Sciences, Città della Salute e della Scienza-Molinette, C Bramante 88, 10126 Torino, Italy
| | - Alice Ceccofiglio
- Syncope Unit, Department of Geriatrics, Azienda Ospedaliero Universitaria Careggi and University of Florence, Florence, Italy
| | - Chiara Mussi
- O.U. of Geriatrics, Department of Biomedical Sciences, Metabolics and Neurosciences, University of Modena and Reggio Emilia, Italy
| | - Giuseppe Bellelli
- Department of Health Sciences, University of Milano Bicocca and Acute Geriatric Unit, San Gerardo Hospital, Monza, Italy
| | - Franco Nicosia
- Medicine and Geriatric Unit - Spedali Civili of Brescia, Brescia, Italy
| | - Daniela Riccio
- Geriatric Department, SS, Trinità Hospital, Cagliari, Italy
| | - Anna M Martone
- Department of Geriatrics, Neurosciences and Orthopedics, Catholic University of the Sacred Heart, Rome, Italy
| | | | | | - Gianni Tava
- Geriatric Unit, Santa Chiara Hospital, Trento, Italy
| | - Virginia Boccardi
- Institute of Gerontology and Geriatrics, Department of Medicine, University of Perugia, S. Maria della Misericordia Hospital, Perugia, Italy
| | - Pasquale Abete
- Department of Translational Medical Sciences, University of Naples, Federico II, Naples, Italy
| | - Michela Tibaldi
- Section of Geriatrics, Department of Medical Sciences, Città della Salute e della Scienza-Molinette, C Bramante 88, 10126 Torino, Italy
| | - Maria L Aurucci
- Section of Geriatrics, Department of Medical Sciences, Città della Salute e della Scienza-Molinette, C Bramante 88, 10126 Torino, Italy.
| | - Gianfranco Fonte
- Section of Geriatrics, Department of Medical Sciences, Città della Salute e della Scienza-Molinette, C Bramante 88, 10126 Torino, Italy
| | - Yolanda Falcone
- Section of Geriatrics, Department of Medical Sciences, Città della Salute e della Scienza-Molinette, C Bramante 88, 10126 Torino, Italy
| | - Andrea Ungar
- Syncope Unit, Department of Geriatrics, Azienda Ospedaliero Universitaria Careggi and University of Florence, Florence, Italy
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20
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Ansermot N, Bochatay M, Schläpfer J, Gholam M, Gonthier A, Conus P, Eap CB. Prevalence of ECG abnormalities and risk factors for QTc interval prolongation in hospitalized psychiatric patients. Ther Adv Psychopharmacol 2019; 9:2045125319891386. [PMID: 31853363 PMCID: PMC6909271 DOI: 10.1177/2045125319891386] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 10/21/2019] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Psychiatric patients are at risk of cardiovascular diseases, and many psychotropic drugs can prolong QTc interval. Requirements for electrocardiogram (ECG) monitoring have been set up in our psychiatric university hospital. The objective of this study was to determine the proportion of adult patients who had an ECG during their hospitalization, the prevalence of ECG abnormalities, the evolution of the QTc after admission, and the risk factors for QTc prolongation. METHODS Retrospective analysis of ECGs and clinical data of all patients with a complete hospitalization in 2015. Assessment of the influence of covariates on QTc using linear mixed-effects models. RESULTS At least one ECG (n = 600) was performed during 37.6% of the stays (n = 1198) and in 45.5% of the patients (n = 871). Among the patients with an ECG, 17.9% had significant ECG abnormalities, including 7.6% with a prolonged QTc. QTc measured at admission and during hospitalization did not change significantly (n = 46, 419.4 ± 29.7 ms, 417.2 ± 27.6 ms, p = 0.71). In the multivariate model (292 patients, 357 ECGs), the covariates significantly associated with the QTc were gender (+15.9 ms if female, p < 0.0001), age (+0.4 ms/year, p = 0.0001), triglyceride levels (+5.7 ms/mmol/l, p = 0.005), and drugs with known risk of torsades de pointes (+6.2 ms if ⩾1 drug, p = 0.028). CONCLUSIONS The prevalence of hospitalized psychiatric patients with an abnormal ECG indicates that ECGs should be performed systematically in this population. Prescription of psychotropic drugs should be done cautiously, particularly in patients with QTc prolongation risk factors.
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Affiliation(s)
- Nicolas Ansermot
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Hospital of Cery, 1008 Prilly, Switzerland
| | - Meredith Bochatay
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Prilly, Switzerland
| | - Jürg Schläpfer
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Mehdi Gholam
- Centre of Psychiatric Epidemiology and Psychopathology, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Prilly, Switzerland
| | - Ariane Gonthier
- General Internal Medicine Practice, Lausanne, Switzerland; University Institute of Medicine of the Family, University of Lausanne, Lausanne, Switzerland
| | - Philippe Conus
- Service of General Psychiatry, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Prilly, Switzerland
| | - Chin B Eap
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Prilly, Switzerland
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Abstract
OBJECTIVE Antipsychotics are associated with a polymorphic ventricular tachycardia, torsades de pointes, which, in the worst case, can lead to sudden cardiac death. The QT interval corrected for heart rate (QTc) is used as a clinical proxy for torsades de pointes. The QTc interval can be prolonged by antipsychotic monotherapy, but it is unknown if the QTc interval is prolonged further with antipsychotic polypharmaceutical treatment. Therefore, this study investigated the associations between QTc interval and antipsychotic monotherapy and antipsychotic polypharmaceutical treatment in schizophrenia, and measured the frequency of QTc prolongation among patients. METHODS We carried out an observational cohort study of unselected patients with schizophrenia visiting outpatient facilities in the region of Central Jutland, Denmark. Patients were enrolled from January of 2013 to June of 2015, with follow-up until June of 2015. Data were collected from clinical interviews and clinical case records. RESULTS Electrocardiograms were available for 65 patients, and 6% had QTc prolongation. We observed no difference in average QTc interval for the whole sample of patients receiving no antipsychotics, antipsychotic monotherapy, or antipsychotic polypharmaceutical treatment (p=0.29). However, women presented with a longer QTc interval when receiving polypharmacy than when receiving monotherapy (p=0.01). A limitation of this study was its small sample size. CONCLUSIONS We recommend an increased focus on monitoring the QTc interval in women with schizophrenia receiving antipsychotics as polypharmacy.
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22
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Birda CL, Kumar S, Bhalla A, Sharma N, Kumari S. Prevalence and prognostic significance of prolonged QTc interval in emergency medical patients: A prospective observational study. Int J Crit Illn Inj Sci 2018; 8:28-35. [PMID: 29619337 PMCID: PMC5869797 DOI: 10.4103/ijciis.ijciis_59_17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Introduction: QTc interval is affected by many factors and prolongation of same may have prognostic significance. A significant number of patients admitted in medical emergency are acutely ill, have multiple comorbidities and are on medications, all of these factors might affect QTc interval and prognosis. Materials and Methods: Single-center, prospective, observational study was carried out on 279 patients of different illnesses recruited from emergency medical services attached to the Department of Internal Medicine at Postgraduate Institute of Medical Education and Research, Chandigarh, India, a tertiary care hospital. Results: Out of 279 patients, 95 were found to have prolonged QTc interval with the prevalence of 34.1%. Fifteen patients (5.4%) had markedly prolonged QTc interval (QTc >500 ms). Of various medical conditions, we found statistically significantly higher number of patients of chronic kidney disease (P = 0.047), chronic liver disease (P < 0.001), hemorrhagic cerebrovascular accident (P = 0.026), and heart failure (P = 0.009) with prolonged QTc interval. Among laboratory abnormalities, patients with low hemoglobin (P = 0.032), with deranged renal functions (P = 0.033), and with hypokalemia (P = 0.026) had a greater share of patients with prolonged QTc interval. There was no difference in duration of hospital stay and frequency of hospital mortality between two groups, although, on subgroup analysis, patients with markedly prolonged QTc interval had significantly higher hospital mortality (P = 0.029). The frequency of ventricular tachycardia was also significantly higher in patients with prolonged QTc interval (P = 0.008). Conclusion: High prevalence of prolonged QTc interval was found in Indian emergency medical patients. There was no difference in hospital mortality though on subgroup analysis, patients with markedly prolonged QTc interval had significantly more episodes of in-hospital ventricular tachycardia and hospital mortality.
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Affiliation(s)
- Chhagan Lal Birda
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Susheel Kumar
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Ashish Bhalla
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Navneet Sharma
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Savita Kumari
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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Khan Q, Ismail M, Haider I, Ali Z. Prevalence of the risk factors for QT prolongation and associated drug-drug interactions in a cohort of medical inpatients. J Formos Med Assoc 2018; 118:109-115. [PMID: 29458991 DOI: 10.1016/j.jfma.2018.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/16/2017] [Accepted: 01/18/2018] [Indexed: 10/18/2022] Open
Abstract
BACKGROUND/PURPOSE Medical inpatients are at increased risk of QT interval prolongation due to multiple risk actors and QT prolonging drugs. This study aimed to identify the prevalence of risk factors for QT prolongation; QT prolonging medications; associated drug-drug interactions (QT-DDIs); their predictors; and TdP (torsades de pointes) risks of drugs. METHODS This cohort study was carried out in medical wards of two tertiary hospitals in Khyber Pakhtunkhwa, Pakistan. The QT-DDIs were identified using Micromedex DrugReax® and AZCERT (Arizona Center for Education and Research on Therapeutics) QT drugs lists. AZCERT QT drugs lists were used to identify TdP risks. Logistic regression analysis was performed to identify predictors of QT-DDIs. RESULTS Total 400 patients were included in this study. The most frequent QT prolonging risk factors included use of ≥1 QT prolonging drugs (74.5%), female gender (55%) and diabetes mellitus (36.3%). Total 487 QT prolonging drugs were identified. According to AZCERT classification, 33.8% of the interacting drugs were included in list-1 (known risk of TdP), 0.9% in list-2 (possible risk of TdP) and 58.8% in list-3 (conditional risk of TdP). The occurrence of QT-DDIs was significantly associated with ≥10 prescribed medications (p = 0.01), chronic liver disease (p = 0.05), chronic obstructive pulmonary disease (p = 0.03), gastroenteritis (p = 0.02), antimicrobials (p < 0.001), antiemetics (p < 0.001) and antinausea (p < 0.001). CONCLUSION A substantial number of patients were exposed to risk factors for QT prolongation; and QT prolonging drugs such as proton pump inhibitors, antimicrobials and diuretics which may lead to serious outcomes.
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Affiliation(s)
- Qasim Khan
- Department of Pharmacy, University of Peshawar, Khyber Pakhtunkhwa, Pakistan; Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Mohammad Ismail
- Department of Pharmacy, University of Peshawar, Khyber Pakhtunkhwa, Pakistan.
| | - Iqbal Haider
- Department of Medicine, Khyber Teaching Hospital, Peshawar, Pakistan
| | - Zahid Ali
- Department of Pharmacy, University of Peshawar, Khyber Pakhtunkhwa, Pakistan
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Sandau KE, Funk M, Auerbach A, Barsness GW, Blum K, Cvach M, Lampert R, May JL, McDaniel GM, Perez MV, Sendelbach S, Sommargren CE, Wang PJ. Update to Practice Standards for Electrocardiographic Monitoring in Hospital Settings: A Scientific Statement From the American Heart Association. Circulation 2017; 136:e273-e344. [DOI: 10.1161/cir.0000000000000527] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Risk factors for QTc-prolongation: systematic review of the evidence. Int J Clin Pharm 2016; 39:16-25. [PMID: 28012118 DOI: 10.1007/s11096-016-0414-2] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 12/08/2016] [Indexed: 10/20/2022]
Abstract
Background QTc-interval prolongation has been associated with serious adverse events, such as Torsade de Pointes and sudden cardiac death. In the prevention of QTc-prolongation, special attention should go to high-risk patients. Aim of the review The aim of this review is to summarize and assess the evidence for different risk factors for QTc-prolongation (demographic factors, comorbidities, electrolytes, QTc-prolonging medication). Methods Potential studies were retrieved based on a systematic search of articles published until June 2015 in the databases Medline and Embase. Both terms about QTc-prolongation/Torsade de Pointes and risk factors were added in the search strategy. The following inclusion criteria were applied: randomized controlled trials and observational studies; inclusion of ≥500 patients from a general population (not limited to specific disease states); assessment of association between QTc-interval and risk factors. For the articles that met the inclusion criteria, the following data were extracted: study design, setting and study population, number of patients and cases of QTc-prolongation, method of electrocardiogram-monitoring, QTc-correction formula, definition of QTc-prolongation, statistical methods and results. Quality assessment was performed using the GRADE approach (for randomized controlled trials) and the STROBE-recommendations (for observational studies). Based on the number of significant results and the level of significance, a quotation of the evidence was allocated. Results Ten observational studies could be included, with a total of 89,532 patients [prospective cohort design: N = 6; multiple regression analyses: N = 5; median STROBE score = 17/22 (range 15-18)]. Very strong evidence was found for hypokalemia, use of diuretics, antiarrhythmic drugs and QTc-prolonging drugs of list 1 of CredibleMeds. Little or no evidence was found for hyperlipidemia, the use of digoxin or statins, neurological disorders, diabetes, renal failure, depression, alcohol abuse, heart rate, pulmonary disorders, hormone replacement therapy, hypomagnesemia, history of a prolonged QTc-interval/Torsade de Pointes, familial history of cardiovascular disease, and the use of only QTc-prolonging drugs of list 2 or 3 of CredibleMeds. Conclusion This systematic review gives a clear overview of the available evidence for a broad range of risk factors for QTc-prolongation.
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Prevalence and correlates of QTc prolongation in Italian psychiatric care: cross-sectional multicentre study. Epidemiol Psychiatr Sci 2016; 25:532-540. [PMID: 26467074 PMCID: PMC7137657 DOI: 10.1017/s2045796015000906] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
AIMS In recent years several warnings have been issued by regulatory authorities on the risk of electrocardiogram abnormalities in individuals exposed to psychotropic drugs. As a consequence of these warnings, monitoring of the QT interval corrected for heart rate (QTc) has become increasingly common. This study was conducted to measure the frequency of QTc prolongation in unselected psychiatric patients, and to document the associated factors using a cross-sectional approach. METHOD The study was carried out in 35 Italian psychiatric services that are part of the STAR (Servizi Territoriali Associati per la Ricerca) Network, a research group established to produce scientific knowledge by collecting data under ordinary circumstances. During a three-month period, a consecutive unselected series of both in- and out-patients were enrolled if they performed an ECG during the recruitment period and were receiving psychotropic drugs on the day ECG was recorded. RESULTS During the recruitment period a total of 2411 patients were included in the study. The prevalence of QTc prolongation ranged from 14.7% (men) and 18.6% (women) for the cut-off of 450 ms, to 1.26% (men) and 1.01% (women) for the cut-off of 500 ms. In the multivariate model conducted in the whole sample of patients exposed to psychotropic drugs, female sex, age, heart rate, alcohol and/or substance abuse, cardiovascular diseases and cardiovascular drug treatment, and drug overdose were significantly associated with QTc prolongation. In patients exposed to antipsychotic drugs, polypharmacy was positively associated with QTc prolongation, whereas use of aripiprazole decreased the risk. In patients exposed to antidepressant drugs, use of citalopram, citalopram dose and use of haloperidol in addition to antidepressant drugs, were all positively associated with QTc prolongation. CONCLUSIONS The confirmation of a link between antipsychotic polypharmacy and QTc prolongation supports the current guidelines that recommend avoiding the concurrent use of two or more antipsychotic drugs, and the confirmation of a link between citalopram and QTc prolongation supports the need for routine QTc monitoring. The relatively low proportion of patients with QTc prolongation not only suggests compliance with current safety warnings issued by regulatory authorities, but also casts some doubts on the clinical relevance of QTc prolongation related to some psychotropic drugs.
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Wasserstrum Y, Lotan D, Itelman E, Barbarova I, Kogan M, Klempfner R, Dagan A, Segal G. Corrected QT interval anomalies are associated with worse prognosis among patients suffering from sepsis. Intern Med J 2016; 46:1204-1211. [DOI: 10.1111/imj.13170] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 06/28/2016] [Accepted: 06/30/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Y. Wasserstrum
- Sackler School of Medicine, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - D. Lotan
- Internal Medicine ‘T’, Chaim Sheba Medical Center, Tel Ha'Shomer, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - E. Itelman
- Sackler School of Medicine, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - I. Barbarova
- Internal Medicine ‘T’, Chaim Sheba Medical Center, Tel Ha'Shomer, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - M. Kogan
- Internal Medicine ‘T’, Chaim Sheba Medical Center, Tel Ha'Shomer, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - R. Klempfner
- Leviev Heart Institute, Chaim Sheba Medical Center, Tel Ha'Shomer, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - A. Dagan
- Internal Medicine ‘T’, Chaim Sheba Medical Center, Tel Ha'Shomer, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - G. Segal
- Internal Medicine ‘T’, Chaim Sheba Medical Center, Tel Ha'Shomer, Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
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Scott AJ, Dunlop AJ, Brown A, Sadler C, Isbister GK. The prevalence of QT prolongation in a population of patients with substance use disorders. Drug Alcohol Rev 2016; 36:239-244. [DOI: 10.1111/dar.12415] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/23/2016] [Accepted: 02/24/2016] [Indexed: 10/21/2022]
Affiliation(s)
- Alexander J. Scott
- School of Medicine and Public Health; University of Newcastle; Newcastle Australia
| | - Adrian J. Dunlop
- School of Medicine and Public Health; University of Newcastle; Newcastle Australia
- Drug and Alcohol Clinical Services; Hunter New England Local Health District; Newcastle Australia
| | - Amanda Brown
- Drug and Alcohol Clinical Services; Hunter New England Local Health District; Newcastle Australia
| | - Craig Sadler
- School of Medicine and Public Health; University of Newcastle; Newcastle Australia
- Alcohol and Drug Unit; Calvary Mater Newcastle; Newcastle Australia
| | - Geoffrey K. Isbister
- School of Medicine and Public Health; University of Newcastle; Newcastle Australia
- Department of Clinical Toxicology and Pharmacology; Calvary Mater Newcastle; Newcastle Australia
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Prevalence and Risk Factors Associated with Use of QT-Prolonging Drugs in Hospitalized Older People. Drugs Aging 2015; 33:53-61. [DOI: 10.1007/s40266-015-0337-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Goldstein LH, Gabin A, Fawaz A, Freedberg NA, Schwartz N, Elias M, Saliba W. Azithromycin is not associated with QT prolongation in hospitalized patients with community-acquired pneumonia. Pharmacoepidemiol Drug Saf 2015; 24:1042-8. [DOI: 10.1002/pds.3842] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 05/14/2015] [Accepted: 06/30/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Lee Hilary Goldstein
- Department of Internal Medicine C; Ha'emek Medical Center; Afula Israel
- Bruce Rappaport Faculty of Medicine; Technion-Israel Institute of Technology; Haifa Israel
- Clinical Pharmacology Unit; Ha'emek Medical Center; Haifa Israel
| | - Ahmad Gabin
- Department of Internal Medicine C; Ha'emek Medical Center; Afula Israel
| | - Abdallah Fawaz
- Department of Internal Medicine C; Ha'emek Medical Center; Afula Israel
| | - Nahum Adam Freedberg
- Bruce Rappaport Faculty of Medicine; Technion-Israel Institute of Technology; Haifa Israel
- Department of Cardiology and Electrophysiology Unit; Ha'emek Medical Center; Afula Israel
| | - Naama Schwartz
- Clinical Research Unit; Ha'emek Medical Center; Afula Israel
- School of public health; University of Haifa; Haifa Israel
| | - Mazen Elias
- Department of Internal Medicine C; Ha'emek Medical Center; Afula Israel
- Bruce Rappaport Faculty of Medicine; Technion-Israel Institute of Technology; Haifa Israel
| | - Walid Saliba
- Department of Internal Medicine C; Ha'emek Medical Center; Afula Israel
- Bruce Rappaport Faculty of Medicine; Technion-Israel Institute of Technology; Haifa Israel
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Lazzerini PE, Capecchi PL, Laghi-Pasini F. Long QT Syndrome: An Emerging Role for Inflammation and Immunity. Front Cardiovasc Med 2015; 2:26. [PMID: 26798623 PMCID: PMC4712633 DOI: 10.3389/fcvm.2015.00026] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 05/08/2015] [Indexed: 01/07/2023] Open
Abstract
The long QT syndrome (LQTS), classified as congenital or acquired, is a multi-factorial disorder of myocardial repolarization predisposing to life-threatening ventricular arrhythmias, particularly torsades de pointes. In the latest years, inflammation and immunity have been increasingly recognized as novel factors crucially involved in modulating ventricular repolarization. In the present paper, we critically review the available information on this topic, also analyzing putative mechanisms and potential interplays with the other etiologic factors, either acquired or inherited. Accumulating data indicate inflammatory activation as a potential cause of acquired LQTS. The putative underlying mechanisms are complex but essentially cytokine-mediated, including both direct actions on cardiomyocyte ion channels expression and function, and indirect effects resulting from an increased central nervous system sympathetic drive on the heart. Autoimmunity represents another recently arising cause of acquired LQTS. Indeed, increasing evidence demonstrates that autoantibodies may affect myocardial electric properties by directly cross-reacting with the cardiomyocyte and interfering with specific ion currents as a result of molecular mimicry mechanisms. Intriguingly, recent data suggest that inflammation and immunity may be also involved in modulating the clinical expression of congenital forms of LQTS, possibly triggering or enhancing electrical instability in patients who already are genetically predisposed to arrhythmias. In this view, targeting immuno-inflammatory pathways may in the future represent an attractive therapeutic approach in a number of LQTS patients, thus opening new exciting avenues in antiarrhythmic therapy.
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Affiliation(s)
- Pietro Enea Lazzerini
- Department of Medical Sciences, Surgery and Neurosciences, University of Siena , Siena , Italy
| | - Pier Leopoldo Capecchi
- Department of Medical Sciences, Surgery and Neurosciences, University of Siena , Siena , Italy
| | - Franco Laghi-Pasini
- Department of Medical Sciences, Surgery and Neurosciences, University of Siena , Siena , Italy
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Alinejad S, Kazemi T, Zamani N, Hoffman RS, Mehrpour O. A systematic review of the cardiotoxicity of methadone. EXCLI JOURNAL 2015; 14:577-600. [PMID: 26869865 PMCID: PMC4747000 DOI: 10.17179/excli2015-553] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 01/14/2015] [Indexed: 01/07/2023]
Abstract
UNLABELLED Methadone is one of the most popular synthetic opioids in the world with some favorable properties making it useful both in the treatment of moderate to severe pain and for opioid addiction. Increased use of methadone has resulted in an increased prevalence of its toxicity, one aspect of which is cardiotoxicity. In this paper, we review the effects of methadone on the heart as well as cardiac concerns in some special situations such as pregnancy and childhood. METHODS We searched for the terms methadone, toxicity, poisoning, cardiotoxicity, heart, dysrhythmia, arrhythmia, QT interval prolongation, torsade de pointes, and Electrocardiogram (ECG) in bibliographical databases including TUMS digital library, PubMed, Scopus, and Google Scholar. This review includes relevant articles published between 2000 and 2013. The main cardiac effects of methadone include prolongation of QT interval and torsade de pointes. Other effects include changes in QT dispersion, pathological U waves, Taku-Tsubo syndrome (stress cardiomyopathy), Brugada-like syndrome, and coronary artery diseases. The aim of this paper is to inform physicians and health care staff about these adverse effects. Effectiveness of methadone in the treatment of pain and addiction should be weighed against these adverse effects and physicians should consider the ways to lessen such undesirable effects. This article presents some recommendations to prevent heart toxicity in methadone users.
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Affiliation(s)
- Samira Alinejad
- Atherosclerosis and Coronary Artery Research Center, Birjand University of Medical Sciences,Birjand, Iran
| | - Toba Kazemi
- Atherosclerosis and Coronary Artery Research Center, Birjand University of Medical Sciences,Birjand, Iran
| | - Nasim Zamani
- Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Robert S. Hoffman
- Division of Medical Toxicology, Ronald O. Pereleman Department of Emergency Medicine, New York University School of Medicine, New York, NY, USA
| | - Omid Mehrpour
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences (BUMS), Pasdaran Avenue, Birjand, 9713643138 Iran
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Cunnington AL, Hood K, White L. Outcomes of screening Parkinson's patients for QTc prolongation. Parkinsonism Relat Disord 2013; 19:1000-3. [PMID: 23871463 DOI: 10.1016/j.parkreldis.2013.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 06/26/2013] [Accepted: 07/03/2013] [Indexed: 01/08/2023]
Abstract
BACKGROUND Parkinson's disease (PD) patients are commonly prescribed medication that has recently been associated with QTc prolongation on electrocardiograms (ECG). In addition, research suggests that PD patients may be more at risk of QTc prolongation. OBJECTIVE To evaluate the outcomes of screening PD patients for QTc prolongation. METHODS ECG analysis of PD patients attending for routine outpatient PD review in 2012 who were prescribed medication that could potentially prolong their QTc interval. We noted prescribing changes and any repeat ECG findings. We also reviewed any recent ECGs of clinic patients not on QTc prolonging medication. RESULTS A third of our PD clinic patients (63/192) were prescribed QTc prolonging medication. Of these 61/63 (97%) ECGs were available. 20/61 (33%) showed QTc prolongation. 6/20 (30%) had significant prolongation >500 ms. 18/20 (90%) patients had medication changes made, and of the 12/18 (67%) ECGs repeated in this group all improved with 11 demonstrating normalisation of the QTc interval. Of the 51 available ECGs in patients not prescribed QTc prolonging medication 3/51 (6%) showed QTc prolongation. Statistical analysis showed that QTc prolongation was significantly associated with the prescription of QTC prolonging medication and stage of PD. CONCLUSION QTc prolongation in PD patients caused by medication is a major modifiable risk factor. A routine ECG should be considered if a PD patient is currently prescribed medication that can prolong the QTc interval. Also consideration should be given to performing this simple test prior to commencing QTc prolonging medication.
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Affiliation(s)
- Anne-Louise Cunnington
- Care of Elderly Department, Glasgow Royal Infirmary, 84 Castle Street, Glasgow G4 0SF, Scotland, United Kingdom; Stobhill Ambulatory Care Hospital, 133 Balornock Road, Glasgow G21 3UW, Scotland, United Kingdom.
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Pasquier M. Reply. Intern Med J 2013; 43:105. [DOI: 10.1111/imj.12025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 11/02/2012] [Indexed: 11/29/2022]
Affiliation(s)
- M. Pasquier
- University of Lausanne; General Internal Medicine; Lausanne Switzerland
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Lee JC, Chik WWB. Drug-related long QT interval in medical inpatients - just the tip of an iceberg. Intern Med J 2013; 43:104-5. [DOI: 10.1111/imj.12026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 10/18/2012] [Indexed: 11/30/2022]
Affiliation(s)
- J. C. Lee
- Department of Nuclear Medicine; The Prince Charles Hospital
- School of Medicine; University of Queensland; Brisbane Queensland
| | - W. W. B. Chik
- Department of Cardiology; Westmead Hospital
- Western Clinical School; University of Sydney; Sydney New South Wales Australia
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Tisdale JE, Wroblewski HA, Overholser BR, Kingery JR, Trujillo TN, Kovacs RJ. Prevalence of QT interval prolongation in patients admitted to cardiac care units and frequency of subsequent administration of QT interval-prolonging drugs: a prospective, observational study in a large urban academic medical center in the US. Drug Saf 2012; 35:459-70. [PMID: 22612851 DOI: 10.2165/11598160-000000000-00000] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Cardiac arrest due to torsades de pointes (TdP) is a rare but catastrophic event in hospitals. Patients admitted to cardiac units are at higher risk of drug-induced QT interval prolongation and TdP, due to a preponderance of risk factors. Few data exist regarding the prevalence of QT interval prolongation in patients admitted to cardiac units or the frequency of administering QT interval-prolonging drugs to patients presenting with QT interval prolongation. OBJECTIVE The aim of this study was to determine the prevalence of Bazett's-corrected QT (QT(c)) interval prolongation upon admission to cardiac units and the proportion of patients presenting with QT(c) interval prolongation who are subsequently administered QT interval-prolonging drugs during hospitalization. METHODS This was a prospective, observational study conducted over a 1-year period (October 2008-October 2009) in 1159 consecutive patients admitted to two cardiac units in a large urban academic medical centre located in Indianapolis, IN, USA. Patients were enrolled into the study at the time of admission to the hospital and were followed daily during hospitalization. Exclusion criteria were age <18 years, ECG rhythm of complete ventricular pacing, and patient designation as 'outpatient' in a bed and/or duration of stay <24 hours. Data collected included demographic information, past medical history, daily progress notes, medication administration records, laboratory data, ECGs, telemetry monitoring strips and diagnostic reports. All patients underwent continuous cardiac telemetry monitoring and/or had a baseline 12-lead ECG obtained within 4 hours of admission. QT intervals were determined manually from lead II of 12-lead ECGs or from continuous lead II telemetry monitoring strips. QT(c) interval prolongation was defined as ≥470 ms for males and ≥480 ms for females. In both males and females, QT(c) interval >500 ms was considered abnormally high. A medication was classified as QT interval-prolonging if there were published data indicating that the drug causes QT interval prolongation and/or TdP. Study endpoints were (i) prevalence of QT(c) interval prolongation upon admission to the Cardiac Medical Critical Care Unit (CMCCU) or an Advanced Heart Care Unit (AHCU); (ii) proportion of patients admitted to the CMCCU/AHCU with QT(c) interval prolongation who subsequently were administered QT interval-prolonging drugs during hospitalization; (iii) the proportion of these higher-risk patients in whom TdP risk factor monitoring was performed; (iv) proportion of patients with QT(c) interval prolongation who subsequently received QT-prolonging drugs and who experienced further QT(c) interval prolongation. RESULTS Of 1159 patients enrolled, 259 patients met exclusion criteria, resulting in a final sample size of 900 patients. PATIENT CHARACTERISTICS mean (± SD) age, 65 ± 15 years; female, 47%; Caucasian, 70%. Admitting diagnoses: heart failure (22%), myocardial infarction (16%), atrial fibrillation (9%), sudden cardiac arrest (3%). QT(c) interval prolongation was present in 27.9% of patients on admission; 18.2% had QT(c) interval >500 ms. Of 251 patients admitted with QT(c) interval prolongation, 87 (34.7%) were subsequently administered QT interval-prolonging drugs. Of 166 patients admitted with QT(c) interval >500 ms, 70 (42.2%) were subsequently administered QT interval-prolonging drugs; additional QT(c) interval prolongation ≥60 ms occurred in 57.1% of these patients. CONCLUSIONS QT(c) interval prolongation is common among patients admitted to cardiac units. QT interval-prolonging drugs are commonly prescribed to patients presenting with QT(c) interval prolongation.
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Affiliation(s)
- James E Tisdale
- Department of Pharmacy Practice, College of Pharmacy, Purdue University, Indianapolis, IN 46202, USA.
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