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Wattoo MA, Tabassum M, Bhutta KR, Kaneez M, Zaidi SMJ, Ijaz H, Awan J, Irshad U, Azhar MJ, Rafi Z. Correlation of Prolonged Corrected QT Interval With Ventricular Arrhythmias and In-Hospital Mortality Among ST-Elevation Myocardial Infarction Patients: A Mystique or Lucidity? Cureus 2020; 12:e12356. [PMID: 33520550 PMCID: PMC7839800 DOI: 10.7759/cureus.12356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background Ventricular arrhythmias (VAs) are a frequent cause of cardiovascular mortality, especially in developing countries. Prolongation of corrected QT (QTc) interval predisposes patients to life-threatening VAs. Our study aims to assess the correlation of prolonged QTc interval with VAs and in-hospital mortality among ST-elevation myocardial infarction (STEMI) patients. Methods This cross-sectional study analyzed the data from 40 patients with a confirmed diagnosis of STEMI and prolonged QTc interval. The patients were evaluated for several characteristics including their electrocardiography (ECG) findings. The frequency of in-hospital mortality and VAs developed after admission were recorded. Spearman correlation was used to assess the correlation of prolonged QTc interval with VAs and in-hospital mortality. Results Out of 40 cases, 30 patients were males and 10 were females with a mean age hovering at 52.95 ± 10.65 years. The mean QTc interval of our patients was 512.02 ± 49.74 milliseconds (ms). A total of 11 (27.5%) patients developed VAs while 14 (35%) of the patients succumbed to the disease complications. Spearman correlation showed a strong significant positive correlation of QTc interval with VAs (rho = 0.658, p < 0.001) and in-hospital mortality (rho = 0.314, p = 0.04). Conclusion Prolonged QTc interval is positively correlated with VAs and in-hospital mortality among STEMI patients. These patients should be regularly monitored and must be managed with caution as they have increased chances to develop VAs and in-hospital mortality. There is an utmost need for curation of guidelines that aid in risk stratification and appropriate management of such patients.
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Affiliation(s)
| | | | | | - Mehwish Kaneez
- Internal Medicine, Rawalpindi Medical University, Rawalpindi, PAK
| | | | - Hania Ijaz
- Internal Medicine, Rawalpindi Medical University, Rawalpindi, PAK
| | - Javeria Awan
- Internal Medicine, Rawalpindi Medical University, Rawalpindi, PAK
| | - Umer Irshad
- Internal Medicine, Rawalpindi Medical University, Rawalpindi, PAK
| | | | - Zainab Rafi
- Cardiology, Sialkot Medical College, Sialkot, PAK
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Jeong JH, Kim DH, Kim TY, Kang C, Lee SH, Lee SB, Kim SC, Park YJ, Lim D. Effects of emergency department boarding on mortality in patients with ST-segment elevation myocardial infarction. Am J Emerg Med 2019; 38:1141-1145. [PMID: 31493979 DOI: 10.1016/j.ajem.2019.158400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 08/05/2019] [Accepted: 08/18/2019] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE Patients with ST-segment elevation myocardial infarction (STEMI) are sometimes boarded in the emergency department (ED) after percutaneous coronary intervention (PCI). We evaluated the effects of direct and indirect admission to the CCU on mortality and the effect on length of stay (LOS) in patients with STEMI. METHOD This was a retrospective observational study of patients with STEMI between Jan 2014 and Nov 2017. The patients were divided into the direct admission (DA) group, who were admitted into the CCU immediately after PCI, and the indirect admission (IA) group, who were admitted after boarding in the ED. The primary endpoint was in-hospital mortality. Secondary endpoints were 3-month mortality, LOS in CCU and hospital, and LOS under intensive care. RESULTS During the study period, 780 patients were enrolled and analyzed. The in-hospital mortality rate and 3-month mortality rate were 5.9% (46 patients) and 8.5% (66 patients). The DA group and IA group had similar in-hospital and 3-month mortality rates (P = .50, P = .28). The median CCU LOS and hospital LOS was similar for both groups (P = .28, P = .46). However, LOS under in intensive care for the IA group was significantly longer than that of the DA group (DA, 31.9 h; IA, 38.7 h; P < .001). CONCLUSION This study suggests that direct admission after PCI and indirect admission was not associated with mortality in patients with STEMI. In addition, the stay in ED also appears to be associated with the duration of stay under critical care.
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Affiliation(s)
- Jin Hee Jeong
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju-si, Gyeongsangnam-do, Republic of Korea; Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju-si, Gyeongsangnam-do, Republic of Korea.
| | - Dong Hoon Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju-si, Gyeongsangnam-do, Republic of Korea; Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju-si, Gyeongsangnam-do, Republic of Korea
| | - Tae Yun Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju-si, Gyeongsangnam-do, Republic of Korea
| | - Changwoo Kang
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju-si, Gyeongsangnam-do, Republic of Korea
| | - Soo Hoon Lee
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju-si, Gyeongsangnam-do, Republic of Korea
| | - Sang Bong Lee
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju-si, Gyeongsangnam-do, Republic of Korea
| | - Seong Chun Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Gyeongsangnam, Republic of Korea
| | - Yong Joo Park
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Gyeongsangnam, Republic of Korea
| | - Daesung Lim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Gyeongsangnam, Republic of Korea
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Twenty-five year trends (1986-2011) in hospital incidence and case-fatality rates of ventricular tachycardia and ventricular fibrillation complicating acute myocardial infarction. Am Heart J 2019; 208:1-10. [PMID: 30471486 DOI: 10.1016/j.ahj.2018.10.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 10/06/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Long-term trends in the incidence rates (IRs) and hospital case-fatality rates (CFRs) of ventricular tachycardia (VT) and ventricular fibrillation (VF) among patients hospitalized with acute myocardial infarction (AMI) have not been recently examined. METHODS We used data from 11,825 patients hospitalized with AMI at all 11 medical centers in central Massachusetts on a biennial basis between 1986 and 2011. Multivariable adjusted logistic regression modeling was used to examine trends in hospital IRs and CFRs of VT and VF complicating AMI. RESULTS The median age of the study population was 71 years, 57.9% were men, and 94.7% were white. The hospital IRs declined from 14.3% in 1986/1988 to 10.5% in 2009/2011 for VT and from 8.2% to 1.7% for VF. The in-hospital CFRs declined from 27.7% to 6.9% for VT and from 49.6% to 36.0% for VF between 1986/1988 and 2009/2011, respectively. The IRs of both early (<48 hours) and late VT and VF declined over time, with greater declines in those of late VT and VF. The incidence rates of VT declined similarly for patients with either an ST-segment elevation myocardial infarction (STEMI) or non-STEMI, whereas they only declined in those with VF and a STEMI. CONCLUSIONS The hospital IRs and CHRs of VT and VF complicating AMI have declined over time, likely because of changes in acute monitoring and treatment practices. Despite these encouraging trends, efforts remain needed to identify patients at risk for these serious ventricular arrhythmias so that preventive and treatment strategies might be implemented as necessary.
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Tran HV, Gore JM, Darling CE, Ash AS, Kiefe CI, Goldberg RJ. Hyperglycemia and risk of ventricular tachycardia among patients hospitalized with acute myocardial infarction. Cardiovasc Diabetol 2018; 17:136. [PMID: 30340589 PMCID: PMC6194566 DOI: 10.1186/s12933-018-0779-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 10/12/2018] [Indexed: 01/08/2023] Open
Abstract
Background Little is known about the association of hyperglycemia with the development of ventricular tachycardia (VT) in patients hospitalized with acute myocardial infarction (AMI) which we examined in the present study. The objectives of this community-wide observational study were to examine the relation between elevated serum glucose levels at the time of hospital admission for AMI and occurrence of VT, and time of occurrence of VT, during the patient’s acute hospitalization. Methods We used data from a population-based study of patients hospitalized with AMI at all central Massachusetts medical centers between 2001 and 2011. Hyperglycemia was defined as a serum glucose level ≥ 140 mg/dl at the time of hospital admission. The development of VT was identified from physicians notes and electrocardiographic findings by our trained team of data abstractors. Results The average age of the study population was 70 years, 58.0% were men, and 92.7% were non-Hispanic whites. The mean and median serum glucose levels at the time of hospital admission were 171.4 mg/dl and 143.0, respectively. Hyperglycemia was present in 51.9% of patients at the time of hospital admission; VT occurred in 652 patients (15.8%), and two-thirds of these episodes occurred during the first 48 h after hospital admission (early VT). After multivariable adjustment, patients with hyperglycemia were at increased risk for developing VT (adjusted OR = 1.48, 95% CI = 1.23–1.78). The presence of hyperglycemia was significantly associated with early (multivariable adjusted OR = 1.39, 95% CI = 1.11–1.73) but not with late VT. Similar associations were observed in patients with and without diabetes and in patients with and without ST-segment elevation AMI. Conclusions Efforts should be made to closely monitor and treat patients who develop hyperglycemia, especially early after hospital admission, to reduce their risk of VT.
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Affiliation(s)
- Hoang V Tran
- Department of Quantitative Health Sciences, University of Massachusetts Medical School, 368 Plantation Street, Worcester, MA, 01605, USA.,Department of Medicine, Bridgeport Hospital, Yale New Haven, CT, USA
| | - Joel M Gore
- Department of Internal Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Chad E Darling
- Department of Emergency Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Arlene S Ash
- Department of Quantitative Health Sciences, University of Massachusetts Medical School, 368 Plantation Street, Worcester, MA, 01605, USA
| | - Catarina I Kiefe
- Department of Quantitative Health Sciences, University of Massachusetts Medical School, 368 Plantation Street, Worcester, MA, 01605, USA
| | - Robert J Goldberg
- Department of Quantitative Health Sciences, University of Massachusetts Medical School, 368 Plantation Street, Worcester, MA, 01605, USA.
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Durak I, Kudaiberdieva G, Gorenek B. Prognostic implications of arrhythmias during primary percutaneous coronary interventions for ST-elevation myocardial infraction. Expert Rev Cardiovasc Ther 2014; 13:85-94. [DOI: 10.1586/14779072.2015.987127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Jones DA, Andiapen M, Van-Eijl TJA, Webb AJ, Antoniou S, Schilling RJ, Ahluwalia A, Mathur A. The safety and efficacy of intracoronary nitrite infusion during acute myocardial infarction (NITRITE-AMI): study protocol of a randomised controlled trial. BMJ Open 2013; 3:bmjopen-2013-002813. [PMID: 23550096 PMCID: PMC3641434 DOI: 10.1136/bmjopen-2013-002813] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Acute myocardial infarction (AMI) is a major cause of death and disability in the UK and worldwide. Presently, timely and effective reperfusion with primary percutaneous coronary intervention (PPCI) remains the most effective treatment strategy for limiting infarct size, preserving left ventricular ejection fraction (LVEF) and improving clinical outcomes. However, the process of reperfusion can itself induce cardiomyocyte death, known as myocardial reperfusion injury, for which there is currently no effective therapy. Extensive preclinical evidence exists to suggest that sodium nitrite (as a source of endogenous nitric oxide) is an effective therapeutic strategy for preventing myocardial reperfusion injury. The purpose of NITRITE-AMI is to test whether sodium nitrite reduces reperfusion injury and subsequent infarct size in patients undergoing PPCI for MI. METHODS AND DESIGN NITRITE-AMI is a double-blind, randomised, single-centre, placebo-controlled trial to determine whether intracoronary nitrite injection reduces infarct size in patients with myocardial infarction undergoing primary angioplasty. The study will enrol 80 patients presenting with ST-elevation myocardial infarction. Patients will be randomised to receive either a bolus of intracoronary sodium nitrite or placebo (sodium chloride) at the time of PPCI. The primary outcome is infarct size assessed by creatine kinase area under the curve (AUC) over 48 h. Secondary endpoints include troponin T AUC and infarct size, LV dimensions and myocardial salvage index assessed by cardiac MR (CMR), markers of platelet reactivity and inflammation, the safety and tolerability of intracoronary nitrite, and 1 year major adverse cardiac events. ETHICS AND DISSEMINATION The study is approved by the local ethics committee (NRES Committee London West London: 11/LO/1500) and by the Medicines and Healthcare Products Regulatory Agency (MHRA) (EudraCT nr. 2010-022460-12). The results of the trial will be published according to the CONSORT statement and will be presented at conferences and reported in peer-reviewed journals. TRIAL REGISTRATION United Kingdom Clinical Research Network (Study ID 12117), http://clinicaltrials.gov (NCT01584453) and Current Controlled Trials (ISRCTN:38736987).
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Affiliation(s)
- D A Jones
- Centre of Clinical Pharmacology, Barts NIHR Cardiovascular Biomedical Research Unit, William Harvey Research Institute, Queen Mary University, London, UK
- Department of Cardiology, London Chest Hospital, Barts Health NHS Trust, London, UK
| | - M Andiapen
- Department of Cardiology, London Chest Hospital, Barts Health NHS Trust, London, UK
| | - T J A Van-Eijl
- Centre of Clinical Pharmacology, Barts NIHR Cardiovascular Biomedical Research Unit, William Harvey Research Institute, Queen Mary University, London, UK
| | - A J Webb
- Centre of Clinical Pharmacology, Barts NIHR Cardiovascular Biomedical Research Unit, William Harvey Research Institute, Queen Mary University, London, UK
| | - S Antoniou
- Department of Cardiology, London Chest Hospital, Barts Health NHS Trust, London, UK
| | - R J Schilling
- Centre of Clinical Pharmacology, Barts NIHR Cardiovascular Biomedical Research Unit, William Harvey Research Institute, Queen Mary University, London, UK
- Department of Cardiology, London Chest Hospital, Barts Health NHS Trust, London, UK
| | - A Ahluwalia
- Centre of Clinical Pharmacology, Barts NIHR Cardiovascular Biomedical Research Unit, William Harvey Research Institute, Queen Mary University, London, UK
| | - A Mathur
- Centre of Clinical Pharmacology, Barts NIHR Cardiovascular Biomedical Research Unit, William Harvey Research Institute, Queen Mary University, London, UK
- Department of Cardiology, London Chest Hospital, Barts Health NHS Trust, London, UK
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Timmer JR, Breet N, Svilaas T, Haaksma J, Van Gelder IC, Zijlstra F. Predictors of ventricular tachyarrhythmia in high-risk myocardial infarction patients treated with primary coronary intervention. Neth Heart J 2011; 18:122-8. [PMID: 20390062 DOI: 10.1007/bf03091750] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Background. We investigated the association between clinical characteristics, angiographic data and ventricular arrhythmia in patients with ST-elevation myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (PCI)Methods. In patients with STEMI (n=225), a Holter analysis was performed the first 12 hours after primary PCI.Results. A total of 151 (66%) patients had >/=1 episode of ventricular tachycardia (VT). Age <70 years (RR 4.9, 95% CI 1.8 to 12.7), TIMI 0-1 pre-PCI (RR 2.6, 95% CI 1.1 to 6.1) and peak CK (RR 3.5, 95% CI 1.9 to 5.8) were independent predictors of VT. One-year mortality was 7%, no association between mortality and presence of early VT was found.Conclusion. Ventricular tachycardia is common in the first 12 hours after primary PCI for STEMI. Independent predictors of VT are younger age, TIMI 0-1 flow prior to PCI and larger infarct size. The presence of early VT was not significantly associated with one-year mortality. (Neth Heart J 2010;18:122-8.).
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Affiliation(s)
- J R Timmer
- Department of Cardiology, Thorax Center, University Medical Center Groningen, Groningen; currently: Department of Cardiology, Isala Klinieken, Zwolle, the Netherlands
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