id:"swepub:oai:DiVA.org:umu-6814"
Sökning: id:"swepub:oai:DiVA.org:umu-6814" > ST-segment deviatio...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03684naa a2200457 4500 | |
| 001 | oai:DiVA.org:umu-6814 | |
| 003 | SwePub | |
| 008 | 071218s2005 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-68142 URI |
| 024 | 7 | a https://doi.org/10.1111/j.1475-097X.2005.00613.x2 DOI |
| 040 | a (SwePub)umu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Häggmark, Sörenu Umeå universitet,Anestesiologi och intensivvård4 aut0 (Swepub:umu)kaso0008 |
| 245 | 1 0 | a ST-segment deviations during pacing-induced increased heart rate in patients without coronary artery disease. |
| 264 | 1 | c 2005 |
| 338 | a electronic2 rdacarrier | |
| 520 | a INTRODUCTION: In order to interpret ST-segment changes as an indicator of ischemia in patients with higher heart rates (HRs), the relation between ST-segment levels and HR needs to be well defined in subjects without coronary artery disease. METHODS: Eighteen patients with normal ECGs in the catheterization laboratory, after radiofrequency ablation of AV nodal re-entry tachycardia or an accessory pathway were included. Computerized online vectorcardiography (VCG) was performed during step-wise atrial pacing-induced increases in HR up to 150 beats min(-1) (bpm). The ST-vector magnitude (ST-VM) and the relative ST change vector magnitude (STC-VM) were analysed at the J point, J + 20 and J + 60 ms. RESULTS: There was no divergence in the course of ST-VM or STC-VM based on J point + 0, 20, or 60 ms during increasing HR. The STC-VM mean values increased progressively during increases in HR above 100 bpm, with an average increase in STC-VM of 15-20 microV per 10 bpm increases in HR. The ST-VM response during HR increases showed a heterogeneous and unpredictable pattern. CONCLUSION: The STC-VM increases linearly with rising HRs above 100 bpm. The STC-VM can exceed widely recognized ischemic thresholds during higher HRs in the absence of ischemia. The choice of J point time to ST-VM measurements as tested here is not important for the STC-VM relation to HR at these HR levels. Further clinical testing is needed to improve the diagnostic specificity of STC-VM measurements during increased HRs. | |
| 653 | a Adult | |
| 653 | a Arrhythmias; Cardiac/*diagnosis/*physiopathology/therapy | |
| 653 | a Cardiac Pacing; Artificial/*methods | |
| 653 | a Coronary Disease/diagnosis/physiopathology/therapy | |
| 653 | a Female | |
| 653 | a Heart Rate | |
| 653 | a Humans | |
| 653 | a Male | |
| 653 | a Middle Aged | |
| 653 | a Statistics as Topic | |
| 653 | a Vectorcardiography/*methods | |
| 700 | 1 | a Haney, Michael Fu Umeå universitet,Anestesiologi och intensivvård4 aut0 (Swepub:umu)milhay96 |
| 700 | 1 | a Jensen, Steen Mu Umeå universitet,Institutionen för folkhälsa och klinisk medicin4 aut |
| 700 | 1 | a Johansson, Göranu Umeå universitet,Anestesiologi och intensivvård4 aut0 (Swepub:umu)gojo0001 |
| 700 | 1 | a Näslund, Ulfu Umeå universitet,Institutionen för folkhälsa och klinisk medicin4 aut0 (Swepub:umu)ulna0002 |
| 710 | 2 | a Umeå universitetb Anestesiologi och intensivvård4 org |
| 773 | 0 | t Clinical Physiology and Functional Imagingg 25:4, s. 246-522q 25:4<246-522x 1475-0961x 1475-097X |
| 856 | 4 | u http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Retrieve&list_uids=15972028&dopt=Citation |
| 856 | 4 | u https://umu.diva-portal.org/smash/get/diva2:146484/FULLTEXT01.pdfx primaryx Raw objecty fulltext |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-6814 |
| 856 | 4 8 | u https://doi.org/10.1111/j.1475-097X.2005.00613.x |
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