FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1749080273> ?p ?o ?g. }

• W1749080273 abstract "The standard 12-lead electrocardiogram (ECG) is one of the most commonly used methods for diagnosing heart disease. Standard ECG is not always optimal, however, and new ECG methods can provide additional information. Analysis of high-frequency QRS components (HF-QRS) has been shown to increase the diagnostic performance of the ECG. Since the amplitudes of the HF-QRS are low compared with those visible in the standard ECG, analysis of HF-QRS requires a low noise level, a sampling rate of at least 1000 Hz, and multibeat signal averaging. Methods for analyzing HF-QRS have been developed in collaboration with the Department of Electroscience at the Faculty of Engineering, Lund University.Another method for increasing the diagnostic performance of the ECG is to add electrodes to provide leads that see parts of the heart not covered by conventional leads. This could be particularly interesting in diagnosing conditions such as acute myocardial infarction (MI), for example, for which it is important to initiate reperfusion treatment as soon as possible.The overall objectives of the thesis are to investigate whether analysis of HF-QRS has the ability to provide information not available from the standard ECG and to investigate whether information from additional ECG leads can improve the diagnosis of acute MI.In Study I, patients with ischemic heart disease had significantly lower HF-QRS compared with normal individuals. There was substantial interindividual variability, however, which probably limits the clinical usefulness of this method. The study also showed that HF-QRS are not related to sex or age.In Study II, we investigated whether the amplitude of HF-QRS correlates to the left ventricular mass. This has been shown to be the case in previous studies in rabbits. Our study, however, showed that analysis of HF-QRS is no better than analysis of standard 12-lead ECG for determination of left ventricular mass.In Study III, patients with intraventricular conduction delay had lower HF-QRS in leads with a positive electrode facing the area of the heart with the conduction delay. In areas of the heart with normal conduction velocity, the amplitudes of HF-QRS were normal or almost normal. These findings support the theory that HF-QRS relate to the conduction velocity of the heart.In Study IV, we investigated whether additional leads can improve the diagnosis of acute MI. The accuracy of the conventional 12-lead ECG is poor for finding acute MI when certain coronary arteries are involved. Conventional 12-lead ECG was compared with 16-lead ECG (12-lead ECG plus 4 additional electrodes) as well as with 24-lead ECG (12-lead ECG plus the inverted leads of these 12 leads). The sensitivity for detecting acute MI increased when using the 16-lead or 24-lead ECG compared with the 12-lead ECG. The specificity, however, decreased slightly. If the aim is to increase sensitivity for detecting MI, clinicians should be advised to use the 24-lead ECG, since no additional electrodes are required." @default.
• W1749080273 created "2016-06-24" @default.
• W1749080273 creator A5004662046 @default.
• W1749080273 date "2007-01-01" @default.
• W1749080273 modified "2023-09-25" @default.
• W1749080273 title "Adjuncts to the Conventional 12-Lead ECG: Assessment of High-Frequency QRS Components and Additional Leads" @default.
• W1749080273 cites W1506809288 @default.
• W1749080273 cites W1507498423 @default.
• W1749080273 cites W1739627328 @default.
• W1749080273 cites W1963659039 @default.
• W1749080273 cites W1965259033 @default.
• W1749080273 cites W1970141641 @default.
• W1749080273 cites W1970871271 @default.
• W1749080273 cites W1971573857 @default.
• W1749080273 cites W1971983548 @default.
• W1749080273 cites W1972986472 @default.
• W1749080273 cites W1973521958 @default.
• W1749080273 cites W1974706029 @default.
• W1749080273 cites W1974718993 @default.
• W1749080273 cites W1977041256 @default.
• W1749080273 cites W1983702256 @default.
• W1749080273 cites W1988378121 @default.
• W1749080273 cites W1996671324 @default.
• W1749080273 cites W2002033132 @default.
• W1749080273 cites W2002684485 @default.
• W1749080273 cites W2003550603 @default.
• W1749080273 cites W2005258984 @default.
• W1749080273 cites W2006077686 @default.
• W1749080273 cites W2007406869 @default.
• W1749080273 cites W2009392464 @default.
• W1749080273 cites W2014539011 @default.
• W1749080273 cites W2015088899 @default.
• W1749080273 cites W2027846763 @default.
• W1749080273 cites W2029614081 @default.
• W1749080273 cites W2034698155 @default.
• W1749080273 cites W2037916677 @default.
• W1749080273 cites W2040809769 @default.
• W1749080273 cites W2040934808 @default.
• W1749080273 cites W2044047397 @default.
• W1749080273 cites W2045643943 @default.
• W1749080273 cites W2047115560 @default.
• W1749080273 cites W2048001096 @default.
• W1749080273 cites W2049508112 @default.
• W1749080273 cites W2051331953 @default.
• W1749080273 cites W2052108489 @default.
• W1749080273 cites W2052115455 @default.
• W1749080273 cites W2052141074 @default.
• W1749080273 cites W2059612743 @default.
• W1749080273 cites W2060133408 @default.
• W1749080273 cites W2066489444 @default.
• W1749080273 cites W2069400480 @default.
• W1749080273 cites W2073043796 @default.
• W1749080273 cites W2073155447 @default.
• W1749080273 cites W2073405128 @default.
• W1749080273 cites W2074771691 @default.
• W1749080273 cites W2077651103 @default.
• W1749080273 cites W2083994164 @default.
• W1749080273 cites W2088038569 @default.
• W1749080273 cites W2088750338 @default.
• W1749080273 cites W2091316838 @default.
• W1749080273 cites W2094106429 @default.
• W1749080273 cites W2097967268 @default.
• W1749080273 cites W2101239185 @default.
• W1749080273 cites W2105235178 @default.
• W1749080273 cites W2108179504 @default.
• W1749080273 cites W2112360098 @default.
• W1749080273 cites W2115750582 @default.
• W1749080273 cites W2120945511 @default.
• W1749080273 cites W2132964272 @default.
• W1749080273 cites W2134982681 @default.
• W1749080273 cites W2146219480 @default.
• W1749080273 cites W2151148978 @default.
• W1749080273 cites W2153677276 @default.
• W1749080273 cites W2161947705 @default.
• W1749080273 cites W2165828195 @default.
• W1749080273 cites W2194282640 @default.
• W1749080273 cites W2407502429 @default.
• W1749080273 cites W2746571191 @default.
• W1749080273 cites W47274968 @default.
• W1749080273 hasPublicationYear "2007" @default.
• W1749080273 type Work @default.
• W1749080273 sameAs 1749080273 @default.
• W1749080273 citedByCount "0" @default.
• W1749080273 crossrefType "dissertation" @default.
• W1749080273 hasAuthorship W1749080273A5004662046 @default.
• W1749080273 hasConcept C111773187 @default.
• W1749080273 hasConcept C114793014 @default.
• W1749080273 hasConcept C126322002 @default.
• W1749080273 hasConcept C127313418 @default.
• W1749080273 hasConcept C164705383 @default.
• W1749080273 hasConcept C2777093003 @default.
• W1749080273 hasConcept C2780040984 @default.
• W1749080273 hasConcept C40993552 @default.
• W1749080273 hasConcept C500558357 @default.
• W1749080273 hasConcept C71924100 @default.
• W1749080273 hasConceptScore W1749080273C111773187 @default.
• W1749080273 hasConceptScore W1749080273C114793014 @default.
• W1749080273 hasConceptScore W1749080273C126322002 @default.
• W1749080273 hasConceptScore W1749080273C127313418 @default.
• W1749080273 hasConceptScore W1749080273C164705383 @default.

• next