Brugada syndrome （BrS） is primary electrical disorder characterized by ST segment elevation with right bundle branch block morphology in patients with apparent structurally normal hearts, It predisposes affected in...Brugada syndrome （BrS） is primary electrical disorder characterized by ST segment elevation with right bundle branch block morphology in patients with apparent structurally normal hearts, It predisposes affected individuals to ventricular tachycardia/fibrillation （VT/VF） and sudden cardiac death （SCD）.A number of studies have identified risk factors that are associated with a more malignant course of disease. These include male gender, syncope, a spontaneous type 1 ECG pattern, family history of SCD, family history of Brugada syndrome,展开更多
Background Cardiac arrhythmias are common conditions in older people.Unfortunately,there is limited literature on associations between cardiac arrhythmias and physical performance or disability.We therefore aimed to p...Background Cardiac arrhythmias are common conditions in older people.Unfortunately,there is limited literature on associations between cardiac arrhythmias and physical performance or disability.We therefore aimed to prospectively investigate associations between cardiac arrhythmias and changes in disability and physical performance during 8 years of follow-up,using data from the Italian Longitudinal Study on Aging(ILSA).Methods Cardiac arrhythmias diagnosis was posed through a screening phase,confirmed by a physician.The onset of disability in activities of daily living(ADL)and the changes in several physical performance tests during follow-up were considered as outcomes.Fully-adjusted and propensity-score Cox Proportional Hazard models and mixed models were used for exploring associations between cardiac arrhythmia and the outcomes of interest.Results The prevalence of cardiac arrhythmia at baseline was 23.3%.People reporting cardiac arrhythmia at the baseline were significantly older,more frequently male,smokers and reported a higher presence of all medical conditions investigated(hypertension,heart failure,angina,myocardial infarction,diabetes,stroke),but no difference in dementia,Parkinsonism,cognitive or mood disorder.Cardiac arrhythmia at baseline was significantly associated with the incidence of disability in ADL(HR=1.23;95%:CI:1.01–1.50;P=0.0478 in propensity score analyses;HR=1.28;95%CI:1.01–1.61;P=0.0401 in fully adjusted models).Cardiac arrhythmia at baseline was also associated with a significant worsening in balance test(P=0.0436).Conclusions The presence of cardiac arrhythmia at baseline was associated with a significant higher risk of disability and of worsening in some physical performance tests,particularly those relating to balance.Screening and frequently assessing physical performance in older people affected by cardiac arrhythmia can be important to prevent a loss of physical performance,with further,potential,complications of medical management.展开更多
Cardiac arrhythmia is an abnormal rate and/or rhythm of a heart due to its abnormal electrical impulse origination and/or propagation. Various etiologies can cause arrhythmias. Heart failure （HF） is a clinical syndr...Cardiac arrhythmia is an abnormal rate and/or rhythm of a heart due to its abnormal electrical impulse origination and/or propagation. Various etiologies can cause arrhythmias. Heart failure （HF） is a clinical syndrome due to an impaired heart that can not pump sufficient blood to meet the systemic metabolic needs.展开更多
1 Introduction Virtually all cardiovascular diseases including arrhythmias,valve disease,coronary artery disease and heart failure(HF)are increasingly common with advancing age.^([1])Age and disease-related changes in...1 Introduction Virtually all cardiovascular diseases including arrhythmias,valve disease,coronary artery disease and heart failure(HF)are increasingly common with advancing age.^([1])Age and disease-related changes in the heart including fibrosis in the atrial and ventricular myocardium and conduction system,scar tissue from myocardial infarction or other cardiomyopathic processes,increased inflammatory cytokines and changes to ion channels are just some of the factors that predispose older adults to arrhythmias.^([2]).展开更多
BACKGROUND：There have been numerous reports of sudden cardiac death attributable to the condition of commotio cordis. Primarily, these are reports from the USA. Although three Australian cases have been mentioned in ...BACKGROUND：There have been numerous reports of sudden cardiac death attributable to the condition of commotio cordis. Primarily, these are reports from the USA. Although three Australian cases have been mentioned in the published literature, the present case appears to be the first described Australian case. METHODS：A man was brought to the Emergency Department after sudden collapse while playing cricket. His medical history was suggestive of hitting by a cricket ball while batting. RESULTS：The epidemiology and mechanism of arrhythmia induction in commofio cordis are discussed. The emergency management of commotio cordis is outlined. CONCLUSIONS： Commofio cordis is rare in sports （and Emergency Medicine）. However it has a high mortality rate, and rapid recognition of the condition allows early defibrillation, generally with a good outcome. The improvement of participant care is recommended at community and other sport events.展开更多
Objective To investigate the alterations of cardiac electrophysiological properties and substantial mechanism and find the stable arrhythmia mouse model in Kunming （KM） and C57BL6/J （C57） mice. Methods Electrocar...Objective To investigate the alterations of cardiac electrophysiological properties and substantial mechanism and find the stable arrhythmia mouse model in Kunming （KM） and C57BL6/J （C57） mice. Methods Electrocardiogram recordings were used to analyze the QT interval in vivo, and mono- phasic action potential of right and left ventricular epicardium was recorded to elicit changes of action potential duration （APD） in conventional and programmed electrical stimulation （PES）. Transient outward potassium current （Its,） was recorded via whole-cell patch-clamp technique in single right and left epicardial myocytes. Results QT interval was prolonged in KM mice relative to C57 mice （62.51±4.47 ms vs. 52.59±4.85 ms, P〈0.05）. The APD at 50% repolarization of the left ventricular epicardium （18.60±0.91 ms vs. 12.90±0.35 ms）, and APDs at 50% （17.31±6.05 ms vs. 12.00±3.24 ms） and 70% repolarization （36.13±5.32 ms vs. 2 1.95±8.06 ms） of the right ventricular epicardium in KM mice were significantly pro- longed compared with C57 mice, respectively （all P〈0.05）. KM mice were more sensitive to PES-induced ventricular tachycardia （25%, 3 of 12 hearts）, and especially to Burst-induced ventricular tachycardia （50%, 6 of 12 hearts） compared with C57 mice, which were 20% （2 of 10 hearts） and 30% （3 of 10 hearts） respec- tively. It,, densities both in the left and right ventricular epicardial myocytes from KM mice were significantly decreased compared with C57 mice, respectively （all P〈0.01）. Conclusion Our data showed that KM mice with tile prolonged QT interval and APD are ruiner- abilities to ventricular arrhythmia, which are attributed to lower Ito densities in ventricular myocytes ob- tained from KM mice than that from C57 mice.展开更多
目的 探讨决奈达隆联合小剂量美托洛尔治疗快速性房性心律失常的疗效。方法 选取2020年1月至2022年1月江苏省苏北人民医院收治的老年快速性房性心律失常患者160例,按照掷币法随机分为决奈达隆组57例、美托洛尔组55例和联合(决奈达隆+美...目的 探讨决奈达隆联合小剂量美托洛尔治疗快速性房性心律失常的疗效。方法 选取2020年1月至2022年1月江苏省苏北人民医院收治的老年快速性房性心律失常患者160例,按照掷币法随机分为决奈达隆组57例、美托洛尔组55例和联合(决奈达隆+美托洛尔)组48例。比较3组用药前后心律失常发作次数、持续时间及症状变化等发生情况。结果 用药3个月和6个月后,联合组总有效率显著高于决奈达隆组和美托洛尔组,差异有统计学意义(P<0.05)。用药6个月后,联合组心房颤动(AF)发作次数[(2.31±1.78)次/48 h vs(11.56±18.68)次/48 h]、AF持续时间[(4.86±6.73)h/48 h vs(10.92±9.61)h/48 h]、心房扑动(AFL)发作次数[(2.33±1.53)次/48 h vs(4.33±1.53)次/48 h],AFL持续时间[(5.15±4.87)h/48 h vs(21.54±20.08)h/48 h]少于用药前,决奈达隆组AFL持续时间[(2.75±1.94)h/48 h vs(10.29±8.04)h/48 h]明显少于用药前,差异有统计学意义(P<0.05)。结论 决奈达隆联合小剂量美托洛尔治疗快速性房性心律失常不仅能明显改善症状,还能显著减少房性期前收缩、房性心动过速发作次数,减少AF、AFL的发作次数及持续时间,可有效控制心率。展开更多
文摘Brugada syndrome （BrS） is primary electrical disorder characterized by ST segment elevation with right bundle branch block morphology in patients with apparent structurally normal hearts, It predisposes affected individuals to ventricular tachycardia/fibrillation （VT/VF） and sudden cardiac death （SCD）.A number of studies have identified risk factors that are associated with a more malignant course of disease. These include male gender, syncope, a spontaneous type 1 ECG pattern, family history of SCD, family history of Brugada syndrome,
基金The Italian National Research Council(CNR)supported the ILSA project from 1991 to 1998 as part of the“Progetto Finalizzato Invecchiamento”Since 1999,the Italian CNR,the“Biology of Aging”Strategic Project and the Ministero della Sanità,through the program“Epidemiology of the Elderly”of the Istituto Superiore di Sanitàand the“Estimates of Health Needs of the Elderly”Special Programme of the Tuscany Region have been supporting the ILSA project.
文摘Background Cardiac arrhythmias are common conditions in older people.Unfortunately,there is limited literature on associations between cardiac arrhythmias and physical performance or disability.We therefore aimed to prospectively investigate associations between cardiac arrhythmias and changes in disability and physical performance during 8 years of follow-up,using data from the Italian Longitudinal Study on Aging(ILSA).Methods Cardiac arrhythmias diagnosis was posed through a screening phase,confirmed by a physician.The onset of disability in activities of daily living(ADL)and the changes in several physical performance tests during follow-up were considered as outcomes.Fully-adjusted and propensity-score Cox Proportional Hazard models and mixed models were used for exploring associations between cardiac arrhythmia and the outcomes of interest.Results The prevalence of cardiac arrhythmia at baseline was 23.3%.People reporting cardiac arrhythmia at the baseline were significantly older,more frequently male,smokers and reported a higher presence of all medical conditions investigated(hypertension,heart failure,angina,myocardial infarction,diabetes,stroke),but no difference in dementia,Parkinsonism,cognitive or mood disorder.Cardiac arrhythmia at baseline was significantly associated with the incidence of disability in ADL(HR=1.23;95%:CI:1.01–1.50;P=0.0478 in propensity score analyses;HR=1.28;95%CI:1.01–1.61;P=0.0401 in fully adjusted models).Cardiac arrhythmia at baseline was also associated with a significant worsening in balance test(P=0.0436).Conclusions The presence of cardiac arrhythmia at baseline was associated with a significant higher risk of disability and of worsening in some physical performance tests,particularly those relating to balance.Screening and frequently assessing physical performance in older people affected by cardiac arrhythmia can be important to prevent a loss of physical performance,with further,potential,complications of medical management.
文摘Cardiac arrhythmia is an abnormal rate and/or rhythm of a heart due to its abnormal electrical impulse origination and/or propagation. Various etiologies can cause arrhythmias. Heart failure （HF） is a clinical syndrome due to an impaired heart that can not pump sufficient blood to meet the systemic metabolic needs.
文摘1 Introduction Virtually all cardiovascular diseases including arrhythmias,valve disease,coronary artery disease and heart failure(HF)are increasingly common with advancing age.^([1])Age and disease-related changes in the heart including fibrosis in the atrial and ventricular myocardium and conduction system,scar tissue from myocardial infarction or other cardiomyopathic processes,increased inflammatory cytokines and changes to ion channels are just some of the factors that predispose older adults to arrhythmias.^([2]).
文摘BACKGROUND：There have been numerous reports of sudden cardiac death attributable to the condition of commotio cordis. Primarily, these are reports from the USA. Although three Australian cases have been mentioned in the published literature, the present case appears to be the first described Australian case. METHODS：A man was brought to the Emergency Department after sudden collapse while playing cricket. His medical history was suggestive of hitting by a cricket ball while batting. RESULTS：The epidemiology and mechanism of arrhythmia induction in commofio cordis are discussed. The emergency management of commotio cordis is outlined. CONCLUSIONS： Commofio cordis is rare in sports （and Emergency Medicine）. However it has a high mortality rate, and rapid recognition of the condition allows early defibrillation, generally with a good outcome. The improvement of participant care is recommended at community and other sport events.
基金Supported by the National Natural Science Foundation of China(81070142)Natural Science Foundation of Hubei Province (2011CDB504)
文摘Objective To investigate the alterations of cardiac electrophysiological properties and substantial mechanism and find the stable arrhythmia mouse model in Kunming （KM） and C57BL6/J （C57） mice. Methods Electrocardiogram recordings were used to analyze the QT interval in vivo, and mono- phasic action potential of right and left ventricular epicardium was recorded to elicit changes of action potential duration （APD） in conventional and programmed electrical stimulation （PES）. Transient outward potassium current （Its,） was recorded via whole-cell patch-clamp technique in single right and left epicardial myocytes. Results QT interval was prolonged in KM mice relative to C57 mice （62.51±4.47 ms vs. 52.59±4.85 ms, P〈0.05）. The APD at 50% repolarization of the left ventricular epicardium （18.60±0.91 ms vs. 12.90±0.35 ms）, and APDs at 50% （17.31±6.05 ms vs. 12.00±3.24 ms） and 70% repolarization （36.13±5.32 ms vs. 2 1.95±8.06 ms） of the right ventricular epicardium in KM mice were significantly pro- longed compared with C57 mice, respectively （all P〈0.05）. KM mice were more sensitive to PES-induced ventricular tachycardia （25%, 3 of 12 hearts）, and especially to Burst-induced ventricular tachycardia （50%, 6 of 12 hearts） compared with C57 mice, which were 20% （2 of 10 hearts） and 30% （3 of 10 hearts） respec- tively. It,, densities both in the left and right ventricular epicardial myocytes from KM mice were significantly decreased compared with C57 mice, respectively （all P〈0.01）. Conclusion Our data showed that KM mice with tile prolonged QT interval and APD are ruiner- abilities to ventricular arrhythmia, which are attributed to lower Ito densities in ventricular myocytes ob- tained from KM mice than that from C57 mice.
文摘目的 探讨决奈达隆联合小剂量美托洛尔治疗快速性房性心律失常的疗效。方法 选取2020年1月至2022年1月江苏省苏北人民医院收治的老年快速性房性心律失常患者160例,按照掷币法随机分为决奈达隆组57例、美托洛尔组55例和联合(决奈达隆+美托洛尔)组48例。比较3组用药前后心律失常发作次数、持续时间及症状变化等发生情况。结果 用药3个月和6个月后,联合组总有效率显著高于决奈达隆组和美托洛尔组,差异有统计学意义(P<0.05)。用药6个月后,联合组心房颤动(AF)发作次数[(2.31±1.78)次/48 h vs(11.56±18.68)次/48 h]、AF持续时间[(4.86±6.73)h/48 h vs(10.92±9.61)h/48 h]、心房扑动(AFL)发作次数[(2.33±1.53)次/48 h vs(4.33±1.53)次/48 h],AFL持续时间[(5.15±4.87)h/48 h vs(21.54±20.08)h/48 h]少于用药前,决奈达隆组AFL持续时间[(2.75±1.94)h/48 h vs(10.29±8.04)h/48 h]明显少于用药前,差异有统计学意义(P<0.05)。结论 决奈达隆联合小剂量美托洛尔治疗快速性房性心律失常不仅能明显改善症状,还能显著减少房性期前收缩、房性心动过速发作次数,减少AF、AFL的发作次数及持续时间,可有效控制心率。
