Acute impact of pacing at different cardiac sites on left ventricular rotation and twist in dogs
We evaluated the acute impact of different cardiac pacing sites on two-dimensional speckle-tracking echocardiography (STE) derived left ventricular (LV) rotation and twist in healthy dogs. Twelve dogs were used in this study. The steerable pacing electrodes were positioned into right heart through t...
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description | We evaluated the acute impact of different cardiac pacing sites on two-dimensional speckle-tracking echocardiography (STE) derived left ventricular (LV) rotation and twist in healthy dogs.
Twelve dogs were used in this study. The steerable pacing electrodes were positioned into right heart through the superior or inferior vena cava, into LV through aorta across the aortic valve. The steerable pacing electrodes were positioned individually in the right atrium (RA), right ventricular apex (RVA), RV outflow tract (RVOT), His bundle (HB), LV apex (LVA) and LV high septum (LVS), individual pacing mode was applied at 10 minutes interval for at least 5 minutes from each position under fluoroscopy and ultrasound guidance and at stabilized hemodynamic conditions. LV short-axis images at the apical and basal levels were obtained during sinus rhythm and pacing. Offline STE analysis was performed. Rotation, twist, time to peak rotation (TPR), time to peak twist (TPT), and apical-basal rotation delay (rotational synchronization index, RSI) values were compared at various conditions. LV pressure was monitored simultaneously.
Anesthetic death occurred in 1 dog, and another dog was excluded because of bad imaging quality. Data from 10 dogs were analyzed. RVA, RVOT, HB, LVA, LVS, RARV (RA+RVA) pacing resulted in significantly reduced apical and basal rotation and twist, significantly prolonged apical TPR, TPT and RSI compared to pre-pacing and RA pacing (all P |
doi_str_mv | 10.1371/journal.pone.0111231 |
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Twelve dogs were used in this study. The steerable pacing electrodes were positioned into right heart through the superior or inferior vena cava, into LV through aorta across the aortic valve. The steerable pacing electrodes were positioned individually in the right atrium (RA), right ventricular apex (RVA), RV outflow tract (RVOT), His bundle (HB), LV apex (LVA) and LV high septum (LVS), individual pacing mode was applied at 10 minutes interval for at least 5 minutes from each position under fluoroscopy and ultrasound guidance and at stabilized hemodynamic conditions. LV short-axis images at the apical and basal levels were obtained during sinus rhythm and pacing. Offline STE analysis was performed. Rotation, twist, time to peak rotation (TPR), time to peak twist (TPT), and apical-basal rotation delay (rotational synchronization index, RSI) values were compared at various conditions. LV pressure was monitored simultaneously.
Anesthetic death occurred in 1 dog, and another dog was excluded because of bad imaging quality. Data from 10 dogs were analyzed. RVA, RVOT, HB, LVA, LVS, RARV (RA+RVA) pacing resulted in significantly reduced apical and basal rotation and twist, significantly prolonged apical TPR, TPT and RSI compared to pre-pacing and RA pacing (all P<0.05). The apical and basal rotation and twist values were significantly higher during HB pacing than during pacing at ventricular sites (all P<0.05, except basal rotation at RVA pacing). The apical TPR during HB pacing was significantly shorter than during RVOT and RVA pacing (both P<0.05). The LV end systolic pressure (LVESP) was significantly lower during ventricular pacing than during pre-pacing and RA pacing.
Our results show that RA and HB pacing results in less acute reduction on LV twist, rotation and LVESP compared to ventricular pacing.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0111231</identifier><identifier>PMID: 25340769</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Animals ; Aorta ; Aorta - physiology ; Aortic valve ; Aortic Valve - physiology ; Atrium ; Blood Pressure ; Cardiac Pacing, Artificial - methods ; Cardiology ; Dogs ; Echocardiography ; Electrocardiography ; Electrodes ; Female ; Fluoroscopy ; Heart ; Heart - physiology ; Heart diseases ; Heart failure ; Hemodynamics ; His bundle ; Male ; Medicine ; Medicine and Health Sciences ; Reproducibility of Results ; Septum ; Synchronism ; Synchronization ; Systolic pressure ; Ultrasound ; Veins & arteries ; Ventricle ; Ventricular Function, Left - physiology</subject><ispartof>PloS one, 2014-10, Vol.9 (10), p.e111231-e111231</ispartof><rights>COPYRIGHT 2014 Public Library of Science</rights><rights>2014 Zhou et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2014 Zhou et al 2014 Zhou et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-3b796264009279730b70eb9a9245269e1ccc6194def99fadf932b07a25bc72233</citedby><cites>FETCH-LOGICAL-c692t-3b796264009279730b70eb9a9245269e1ccc6194def99fadf932b07a25bc72233</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4207788/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4207788/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,2102,2928,23866,27924,27925,53791,53793,79600,79601</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25340769$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Lionetti, Vincenzo</contributor><creatorcontrib>Zhou, Zhi-Wen</creatorcontrib><creatorcontrib>Zhang, Bu-Chun</creatorcontrib><creatorcontrib>Yu, Yi</creatorcontrib><creatorcontrib>Guo, Kai</creatorcontrib><creatorcontrib>Li, Wei</creatorcontrib><creatorcontrib>Zhang, Rui</creatorcontrib><creatorcontrib>Zhang, Peng-Pai</creatorcontrib><creatorcontrib>Li, Yi-Gang</creatorcontrib><title>Acute impact of pacing at different cardiac sites on left ventricular rotation and twist in dogs</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>We evaluated the acute impact of different cardiac pacing sites on two-dimensional speckle-tracking echocardiography (STE) derived left ventricular (LV) rotation and twist in healthy dogs.
Twelve dogs were used in this study. The steerable pacing electrodes were positioned into right heart through the superior or inferior vena cava, into LV through aorta across the aortic valve. The steerable pacing electrodes were positioned individually in the right atrium (RA), right ventricular apex (RVA), RV outflow tract (RVOT), His bundle (HB), LV apex (LVA) and LV high septum (LVS), individual pacing mode was applied at 10 minutes interval for at least 5 minutes from each position under fluoroscopy and ultrasound guidance and at stabilized hemodynamic conditions. LV short-axis images at the apical and basal levels were obtained during sinus rhythm and pacing. Offline STE analysis was performed. Rotation, twist, time to peak rotation (TPR), time to peak twist (TPT), and apical-basal rotation delay (rotational synchronization index, RSI) values were compared at various conditions. LV pressure was monitored simultaneously.
Anesthetic death occurred in 1 dog, and another dog was excluded because of bad imaging quality. Data from 10 dogs were analyzed. RVA, RVOT, HB, LVA, LVS, RARV (RA+RVA) pacing resulted in significantly reduced apical and basal rotation and twist, significantly prolonged apical TPR, TPT and RSI compared to pre-pacing and RA pacing (all P<0.05). The apical and basal rotation and twist values were significantly higher during HB pacing than during pacing at ventricular sites (all P<0.05, except basal rotation at RVA pacing). The apical TPR during HB pacing was significantly shorter than during RVOT and RVA pacing (both P<0.05). The LV end systolic pressure (LVESP) was significantly lower during ventricular pacing than during pre-pacing and RA pacing.
Our results show that RA and HB pacing results in less acute reduction on LV twist, rotation and LVESP compared to ventricular pacing.</description><subject>Animals</subject><subject>Aorta</subject><subject>Aorta - physiology</subject><subject>Aortic valve</subject><subject>Aortic Valve - physiology</subject><subject>Atrium</subject><subject>Blood Pressure</subject><subject>Cardiac Pacing, Artificial - methods</subject><subject>Cardiology</subject><subject>Dogs</subject><subject>Echocardiography</subject><subject>Electrocardiography</subject><subject>Electrodes</subject><subject>Female</subject><subject>Fluoroscopy</subject><subject>Heart</subject><subject>Heart - physiology</subject><subject>Heart diseases</subject><subject>Heart failure</subject><subject>Hemodynamics</subject><subject>His bundle</subject><subject>Male</subject><subject>Medicine</subject><subject>Medicine and Health Sciences</subject><subject>Reproducibility of Results</subject><subject>Septum</subject><subject>Synchronism</subject><subject>Synchronization</subject><subject>Systolic pressure</subject><subject>Ultrasound</subject><subject>Veins & arteries</subject><subject>Ventricle</subject><subject>Ventricular Function, Left - 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physiology</topic><topic>Aortic valve</topic><topic>Aortic Valve - physiology</topic><topic>Atrium</topic><topic>Blood Pressure</topic><topic>Cardiac Pacing, Artificial - methods</topic><topic>Cardiology</topic><topic>Dogs</topic><topic>Echocardiography</topic><topic>Electrocardiography</topic><topic>Electrodes</topic><topic>Female</topic><topic>Fluoroscopy</topic><topic>Heart</topic><topic>Heart - physiology</topic><topic>Heart diseases</topic><topic>Heart failure</topic><topic>Hemodynamics</topic><topic>His bundle</topic><topic>Male</topic><topic>Medicine</topic><topic>Medicine and Health Sciences</topic><topic>Reproducibility of Results</topic><topic>Septum</topic><topic>Synchronism</topic><topic>Synchronization</topic><topic>Systolic pressure</topic><topic>Ultrasound</topic><topic>Veins & arteries</topic><topic>Ventricle</topic><topic>Ventricular Function, Left - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Zhi-Wen</creatorcontrib><creatorcontrib>Zhang, Bu-Chun</creatorcontrib><creatorcontrib>Yu, Yi</creatorcontrib><creatorcontrib>Guo, Kai</creatorcontrib><creatorcontrib>Li, Wei</creatorcontrib><creatorcontrib>Zhang, Rui</creatorcontrib><creatorcontrib>Zhang, Peng-Pai</creatorcontrib><creatorcontrib>Li, Yi-Gang</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Opposing Viewpoints in Context (Gale)</collection><collection>Gale In Context: Science</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>ProQuest Nursing and Allied Health Journals</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Immunology Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Agricultural Science Collection</collection><collection>ProQuest Health and Medical</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Public Health Database (Proquest)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>Advanced Technologies & Aerospace Database (1962 - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhou, Zhi-Wen</au><au>Zhang, Bu-Chun</au><au>Yu, Yi</au><au>Guo, Kai</au><au>Li, Wei</au><au>Zhang, Rui</au><au>Zhang, Peng-Pai</au><au>Li, Yi-Gang</au><au>Lionetti, Vincenzo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Acute impact of pacing at different cardiac sites on left ventricular rotation and twist in dogs</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2014-10-23</date><risdate>2014</risdate><volume>9</volume><issue>10</issue><spage>e111231</spage><epage>e111231</epage><pages>e111231-e111231</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>We evaluated the acute impact of different cardiac pacing sites on two-dimensional speckle-tracking echocardiography (STE) derived left ventricular (LV) rotation and twist in healthy dogs.
Twelve dogs were used in this study. The steerable pacing electrodes were positioned into right heart through the superior or inferior vena cava, into LV through aorta across the aortic valve. The steerable pacing electrodes were positioned individually in the right atrium (RA), right ventricular apex (RVA), RV outflow tract (RVOT), His bundle (HB), LV apex (LVA) and LV high septum (LVS), individual pacing mode was applied at 10 minutes interval for at least 5 minutes from each position under fluoroscopy and ultrasound guidance and at stabilized hemodynamic conditions. LV short-axis images at the apical and basal levels were obtained during sinus rhythm and pacing. Offline STE analysis was performed. Rotation, twist, time to peak rotation (TPR), time to peak twist (TPT), and apical-basal rotation delay (rotational synchronization index, RSI) values were compared at various conditions. LV pressure was monitored simultaneously.
Anesthetic death occurred in 1 dog, and another dog was excluded because of bad imaging quality. Data from 10 dogs were analyzed. RVA, RVOT, HB, LVA, LVS, RARV (RA+RVA) pacing resulted in significantly reduced apical and basal rotation and twist, significantly prolonged apical TPR, TPT and RSI compared to pre-pacing and RA pacing (all P<0.05). The apical and basal rotation and twist values were significantly higher during HB pacing than during pacing at ventricular sites (all P<0.05, except basal rotation at RVA pacing). The apical TPR during HB pacing was significantly shorter than during RVOT and RVA pacing (both P<0.05). The LV end systolic pressure (LVESP) was significantly lower during ventricular pacing than during pre-pacing and RA pacing.
Our results show that RA and HB pacing results in less acute reduction on LV twist, rotation and LVESP compared to ventricular pacing.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25340769</pmid><doi>10.1371/journal.pone.0111231</doi><oa>free_for_read</oa></addata></record> |
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subjects | Animals Aorta Aorta - physiology Aortic valve Aortic Valve - physiology Atrium Blood Pressure Cardiac Pacing, Artificial - methods Cardiology Dogs Echocardiography Electrocardiography Electrodes Female Fluoroscopy Heart Heart - physiology Heart diseases Heart failure Hemodynamics His bundle Male Medicine Medicine and Health Sciences Reproducibility of Results Septum Synchronism Synchronization Systolic pressure Ultrasound Veins & arteries Ventricle Ventricular Function, Left - physiology |
title | Acute impact of pacing at different cardiac sites on left ventricular rotation and twist in dogs |
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