scholarly journals Diagnostic yield in victims of sudden cardiac death and their relatives

EP Europace ◽  
2020 ◽  
Vol 22 (6) ◽  
pp. 964-971 ◽  
Author(s):  
Benjamin Lautrup Hansen ◽  
Elisabeth Mütze Jacobsen ◽  
Amalie Kjerrumgaard ◽  
Jacob Tfelt-Hansen ◽  
Bo Gregers Winkel ◽  
...  

Abstract Aims International guidelines recommend cardiogenetic screening in families with sudden cardiac death (SCD) if the suspected cause is an inherited cardiac disease. The aim was to assess the diagnostic yield of inherited cardiac diseases in consecutively referred SCD families. Methods and results In this single-centre retrospective study, we consecutively included families referred to our tertiary unit between 2005 and 2018 for screening due to SCD. Following evaluation of premortem medical records and postmortem findings for the proband, the families underwent a guideline-based screening protocol. Relatives were followed and cardiovascular events registered. In total, 304 families with 695 relatives were included. In probands, mean age at death was 39 years (75% males) and in relatives mean age at screening was 35 years (47% males). The proband-diagnosis was established through autopsy findings (n = 89), genetic analyses (n = 7), or based on premortem findings (n = 21). In the remaining 187 families with borderline/no diagnosis in the proband, screening of relatives yielded a diagnosis in 26 additional families. In total, an inherited cardiac disease was identified in 143 out of 304 families (47%). In relatives, 73 (11%) were diagnosed. Arrhythmogenic right ventricular cardiomyopathy (n = 16) was the most common diagnosis. During follow-up (mean 5.5 years), a low rate of serious cardiac events was observed (no SCD events). Conclusion Forty-seven percent of SCD families were diagnosed. Eleven percent of the screened relatives received a definite diagnosis and were offered treatment according to guidelines. A low rate of serious cardiovascular events was observed among SCD relatives.

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
B L Hansen ◽  
E M Jacobsen ◽  
A Kjerrumgaard ◽  
B G Winkel ◽  
A C Christensen ◽  
...  

Abstract Background International guidelines recommend screening of relatives in families with sudden cardiac death (SCD) if the cause of death is suspected to be an inheritable cardiac disease. The inheritable cardiac diagnosis may either have been known before the death, established at the autopsy or identified through screening of relatives. Purpose To provide an estimate of the diagnostic yield of inherited cardiac disease in SCD victims. Methods In an observational study, we included all families consecutively referred to our tertiary unit for inheritable cardiac diseases in the period from 2005 to 2018 due to SCD. Families with SCD victims under 1 year of age were excluded. In total, 697 relatives from 305 families were included and all relatives underwent a standard screening protocol, which included clinical and genetic work-up. Premortem medical records and postmortem findings on the SCD victim were ascertained whenever possible. Results A definite inheritable cardiac disease was identified in 113 out of 305 SCD families prior to family screening. The diagnosis was established through autopsy findings (n=89), genetic analysis (n=3) or was established prior to death (n=21). In the remaining 192 families with no or a borderline diagnosis only, screening of the relatives yielded a diagnosis in additional 28 families (15%). On a family-basis, a total of 141 out of 305 families (46%) were diagnosed. Seventy-seven (11%) out of the 697 screened relatives received either a phenotype-positive and/or genotype-positive inheritable diagnosis and 70 (10%) relatives received a borderline diagnosis. The most common diagnoses in the relatives were ARVC (n=17) followed by DCM (n=10) (see figure). Conclusion Almost half of SCD families were diagnosed with an inheritable cardiac disease of which one fifth of the families were diagnosed as a result of family screening. In 11% of the screened relatives a probable inheritable diagnosis was identified.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
C.V Dalgaard ◽  
B.L Hansen ◽  
E.M Jacobsen ◽  
A Kjerrumgaard ◽  
J Tfelt-Hansen ◽  
...  

Abstract Introduction Sudden cardiac death (SCD) may be caused by several inherited cardiac diseases and screening and treatment of relatives may be lifesaving. Sudden unexplained death (SUD) victims have been autopsied, whereas non-autopsied possible SCD (pSCD) victims are only filtered on manner of death and medical records. Screening of relatives may identify an inherited cardiac disease. Purpose To assess the diagnostic yield at initial evaluation and during follow-up of relatives to SUD and pSCD victims. Furthermore, to evaluate the outcome in the relatives. Methods We retrospectively included first-degree relatives to SUD and pSCD victims referred to our tertiary center from 2005 to 2018. Probands with known antemortem inherited cardiac disease were excluded. Data from systematic screening and routine follow-up of the relatives were registered. Results We included 371 first-degree relatives from 187 families: 276 SUD relatives (age at initial evaluation 35±17 years, 54% men;) and 95 pSCD relatives (age at initial evaluation 40±15 years, 51% men). The diagnostic yield among SUD families was 18%, among pSCD families 13% (p>0.05 between groups). The diagnoses in SUD families were mainly channelopathies (68%), whereas the pSCD families were diagnosed with cardiomyopathies, channelopathies, and premature ischemic heart disease (Figure 1). The vast majority of diagnosed families (93%) were diagnosed at the initial evaluation and only two families were diagnosed during the mean follow-up of 5.4 years. During follow-up, 57 (15%) relatives had a cardiac-related hospitalization, 12 (3%) relatives had a cardiac device implanted, three (1%) relatives died of non-cardiac causes, and one (0.5%) relative had a myocardial infarction. There was no significant difference in cardiac event rates between the SUD and pSCD groups (all p>0.05). Conclusion One in 6–7 families with SUD or pSCD victims obtained a diagnosis based on screening of relatives; we mainly diagnosed channelopathies in SUD families and a broader spectrum of inherited cardiac disease in the pSCD families. The majority of affected relatives was diagnosed at the initial evaluation and clinical follow-up may not be warranted in all relatives with normal findings at initial screening. Figure 1. Family diagnoses in categories, n (%) Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): The Capital Regions Research Foundation and The A.P. Moeller Foundation.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
A Kjerrumgaard ◽  
E M Jacobsen ◽  
B L Hansen ◽  
B G Winkel ◽  
A H Christensen ◽  
...  

Abstract Background Guidelines recommend clinical assessment of relatives to young sudden cardiac death (SCD) victims (<50 years) to protect the surviving relatives by pre-symptomatic interventions, in case the SCD was due to an inherited cardiac disorder. The etiology is an inherited cardiac disease in about 50% of young SCD cases. The work-up of relatives is generally guided by findings in the SCD victim. If post-mortem examinations (autopsies) have not been performed the work-up of relatives is challenged. The diagnostic hit-ratio of screening of relatives under these circumstances is unclear. Purpose To assess the diagnostic yield of inherited cardiac diseases of cardiac work-up in relatives of SCD victims, where no autopsy had been performed. Methods This retrospective study consecutively included families referred to our tertiary referral centre, specialised in hereditary cardiac diseases, during the period 2005 to 2018 due to SCD in the family. No autopsy had been performed in any of the SCD victims. The relatives underwent standard cardiac work-up according to guidelines. Based on the findings in the relatives the families were categorised into: 1) definite diagnosis, 2) borderline diagnosis or 3) undiagnosed. Results We assessed 149 relatives (43±16 age, 48% men) to 84 SCD un-autopsied cases (44±11 age, 79% men). In 11 (13%) families a definite diagnosis was established, in 8 (10%) families a borderline diagnosis was found and the remaining 65 (77%) families remained undiagnosed. The most common diagnosis was premature IHD (36%) followed by cardiomyopathies (27%) and channelopathies (27%). A disease-causing mutation was identified in 3 families out of 15 genetically examined families. Conclusion Systematic cardiac work-up of relatives to not-autopsied SCD victims, revealed a definite hereditary cardiac disease in 13% of the referred families, and a borderline diagnosis in additionally 10% of the families. Despite a reduced diagnostic yield in family members of non-autopsied SCD victims, work-up of relatives is clearly still justified.


2020 ◽  
Author(s):  
Jytte Banner ◽  
Cristina Basso ◽  
Zoe Tolkien ◽  
Ivana Kholova ◽  
Katarzyna Michaud ◽  
...  

Abstract In sudden cardiac death, an autopsy is an essential step in establishing a diagnosis of inherited cardiac disease and identifying families that require cardiac screening. To evaluate aspects of post-mortem practice in Europe, a questionnaire was designed and circulated to both clinical and forensic pathologists. There was a 48% response rate and information was obtained from 17 countries. The results showed a wide variety in the management of sudden cardiac death, with a general tendency towards a lack of thorough investigation. In up to 40% of cases, autopsies were not performed in subjects less than 50 years who may have died from cardiac disease. Reasons for this were lack of finance and lack of interest from police, legal authorities, and doctors. Only 50% of pathologists seem to follow a standard protocol for autopsy examination, apparently due to lack of expertise and/or training. When autopsies were performed, histology and toxicology were almost always taken, genetic studies were generally available and retention of the heart for specialist study was usually permitted. Our results suggest that although the standard of practice is appropriate in many centres, many more cases should have autopsies, especially in sudden deaths in subjects less than 50 years.


2006 ◽  
Vol 34 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Elena Ladich ◽  
Renu Virmani ◽  
Allen Burke

Sudden cardiac death (SCD) accounts for approximately 300,000 cardiac events in the United States each year, representing an overall incidence of 0.1–0.2% per year. Although the vast majority of these may be attributed to coronary atherosclerosis, a wide variety of nonatherosclerotic-related cardiac diseases have been associated with SCD. This review highlights three general categories of cardiac disease not related to atherosclerosis: the cardiomyopathies, inflammatory myocardial diseases, and ion channel disorders. The important role played by genetics in some of these cardiovascular diseases is presented as well as toxic and drug-related etiologies.


2018 ◽  
Vol 69 (9) ◽  
pp. 2482-2486
Author(s):  
Iuliana Hunea ◽  
Simona Irina Damian ◽  
Carmen Corina Radu ◽  
Sorin Moldoveanu ◽  
Tatiana Iov

Cardiac disease is the leading cause of death, and sudden cardiac death occupies the first place in sudden deaths of natural causes. Sudden cardiac death due to lethal arrhythmia may be the first manifestation of a cardiac disease, such cases becoming suspect dead, thus forensic cases. The autopsy performed in such cases may reveal important cardiovascular disease but not obvious macroscopic or histological changes of acute myocardial infarction (IMA), except for cases of survival for several hours after the onset of the symptomatology. Biochemical markers were used to test for myocardial lesions in the absence of morphological changes. Methods for determining myoglobin, CK-MB, troponin T (cTn T), troponin I (cTn I) were introduced to the clinic to diagnose the condition of patients with chest pain as early as the 1990s. The lack of pathognomonic elements in corps investigations, where part of the analysis cannot be carried out, requires verification of the value of the investigations that can be carried out, with reference to the biochemical in the present case, in establishing the diagnosis with certainty.


Author(s):  
Paul D. Thompson

Regular physical activity reduces atherosclerotic coronary artery disease (CAD) events including acute myocardial infarction (AMI) and sudden cardiac death (SCD). Conversely, vigorous exercise acutely and transiently increases the risk of both these CAD events in adult athletes with known or occult CAD. CAD is the cause of most exercise-related SCDs in adult athletes. Exercise-related AMIs are typically caused by atherosclerotic plaque rupture and acute thrombosis, whereas exercise-related SCD can be caused by both plaque rupture and exercise-induce ischaemia. The management of athletes with CAD requires aggressive risk factor reduction plus an assessment of risk for an acute cardiac event based on exercise testing, ventricular function measurement, and an assessment of electrical stability. Whether or not an athlete should return to competition after a CAD event is a joint decision made by the athlete and the clinician based on the risks and benefits of athletic participation for that athlete.


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