Electrocardiogram of the humpback whale (Megaptera noaeangliae) with specific reference to atrioventricular transmission and ventricular excitation
Objectives. The objective of the study was to record the electrocardiogram (ECG) of a large whale to obtain crucial data for comparative electrophysiologic analysis. Background. The data were needed to establish the mismatch between heart size and PR interval and QRS duration in mammals. Methods. In...
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| Veröffentlicht in: | Journal of the American College of Cardiology 1992-08, Vol.20 (2), p.475-479 |
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| creator | Meijler, Frits L. Wittkampf, Fred H.M. Brennen, Kenneth R. Baker, Verne Wassenaar, Claes Bakken, Earl E. |
| description | Objectives. The objective of the study was to record the electrocardiogram (ECG) of a large whale to obtain crucial data for comparative electrophysiologic analysis.
Background. The data were needed to establish the mismatch between heart size and PR interval and QRS duration in mammals.
Methods. In the waters off the coast of Newfoundland, in two humpback whales (Megaptera novaeangliae) with an estimated weight of 30,000 kg a 1-lead ECG was recorded, enabling reliable assessment of P waves and QRS complexes.
Results. It was found that both the PR interval (atrioventricular [AV] transmission time) and QRS duration (ventricular excitation) are extremely short for animals of this size. These findings are difficult, if not impossible, to explain on the basis of currently accepted electrophysiologic theories. However, the narrow QRS complex may be due to a very dense His-Purkinje network in the ventricular wall of whales. Alternative mechanisms that can explain the function of the mammalian AV node need to be considered and explored.
Conclusions. The results of the study may be of value for the understanding of the ECG in humans. |
| doi_str_mv | 10.1016/0735-1097(92)90120-C |
| format | Article |
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Background. The data were needed to establish the mismatch between heart size and PR interval and QRS duration in mammals.
Methods. In the waters off the coast of Newfoundland, in two humpback whales (Megaptera novaeangliae) with an estimated weight of 30,000 kg a 1-lead ECG was recorded, enabling reliable assessment of P waves and QRS complexes.
Results. It was found that both the PR interval (atrioventricular [AV] transmission time) and QRS duration (ventricular excitation) are extremely short for animals of this size. These findings are difficult, if not impossible, to explain on the basis of currently accepted electrophysiologic theories. However, the narrow QRS complex may be due to a very dense His-Purkinje network in the ventricular wall of whales. Alternative mechanisms that can explain the function of the mammalian AV node need to be considered and explored.
Conclusions. The results of the study may be of value for the understanding of the ECG in humans.</description><identifier>ISSN: 0735-1097</identifier><identifier>EISSN: 1558-3597</identifier><identifier>DOI: 10.1016/0735-1097(92)90120-C</identifier><identifier>PMID: 1634688</identifier><identifier>CODEN: JACCDI</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Animals ; Atrioventricular Node - physiology ; Biological and medical sciences ; Electrocardiography - veterinary ; Electrophysiology ; Fundamental and applied biological sciences. Psychology ; Heart ; Heart - anatomy & histology ; Heart Conduction System - physiology ; Organ Size ; Ventricular Function - physiology ; Vertebrates: cardiovascular system ; Whales - anatomy & histology ; Whales - physiology</subject><ispartof>Journal of the American College of Cardiology, 1992-08, Vol.20 (2), p.475-479</ispartof><rights>1992</rights><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c517t-f4f380ea20b991f89de5b86eb831011ff6f73f21d9c5103ea107d9df5f2b5c113</citedby><cites>FETCH-LOGICAL-c517t-f4f380ea20b991f89de5b86eb831011ff6f73f21d9c5103ea107d9df5f2b5c113</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0735-1097(92)90120-C$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5573148$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/1634688$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Meijler, Frits L.</creatorcontrib><creatorcontrib>Wittkampf, Fred H.M.</creatorcontrib><creatorcontrib>Brennen, Kenneth R.</creatorcontrib><creatorcontrib>Baker, Verne</creatorcontrib><creatorcontrib>Wassenaar, Claes</creatorcontrib><creatorcontrib>Bakken, Earl E.</creatorcontrib><title>Electrocardiogram of the humpback whale (Megaptera noaeangliae) with specific reference to atrioventricular transmission and ventricular excitation</title><title>Journal of the American College of Cardiology</title><addtitle>J Am Coll Cardiol</addtitle><description>Objectives. The objective of the study was to record the electrocardiogram (ECG) of a large whale to obtain crucial data for comparative electrophysiologic analysis.
Background. The data were needed to establish the mismatch between heart size and PR interval and QRS duration in mammals.
Methods. In the waters off the coast of Newfoundland, in two humpback whales (Megaptera novaeangliae) with an estimated weight of 30,000 kg a 1-lead ECG was recorded, enabling reliable assessment of P waves and QRS complexes.
Results. It was found that both the PR interval (atrioventricular [AV] transmission time) and QRS duration (ventricular excitation) are extremely short for animals of this size. These findings are difficult, if not impossible, to explain on the basis of currently accepted electrophysiologic theories. However, the narrow QRS complex may be due to a very dense His-Purkinje network in the ventricular wall of whales. Alternative mechanisms that can explain the function of the mammalian AV node need to be considered and explored.
Conclusions. The results of the study may be of value for the understanding of the ECG in humans.</description><subject>Animals</subject><subject>Atrioventricular Node - physiology</subject><subject>Biological and medical sciences</subject><subject>Electrocardiography - veterinary</subject><subject>Electrophysiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Heart</subject><subject>Heart - anatomy & histology</subject><subject>Heart Conduction System - physiology</subject><subject>Organ Size</subject><subject>Ventricular Function - physiology</subject><subject>Vertebrates: cardiovascular system</subject><subject>Whales - anatomy & histology</subject><subject>Whales - physiology</subject><issn>0735-1097</issn><issn>1558-3597</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kc9u1DAQhy0EKkvhDUDyAaH2ELDjdWJfkNCq_JGKuMDZmjjjXUMSB9tp4Tl4YRx2VThxmsPvm9HMN4Q85ewlZ7x5xVohK850e6HrS814zardPbLhUqpKSN3eJ5s75CF5lNJXxlijuD4jZ7wR20apDfl1NaDNMViIvQ_7CCMNjuYD0sMyzh3Yb_T2AAPSi4-4hzljBDoFQJj2gwe8pLc-H2ia0XrnLY3oMOJkkeZAIUcfbnAqxS4DRJojTGn0KfkwUZh6-m-IP6zPkEv0mDxwMCR8cqrn5Mvbq8-799X1p3cfdm-uKyt5myu3dUIxhJp1WnOndI-yUw12ShQ_3LnGtcLVvNeFZwKBs7bXvZOu7qTlXJyTF8e5cwzfF0zZlN0sDgNMGJZkWsEUq3VTwO0RtDGkVG40c_QjxJ-GM7P-wqyizSra6Nr8-YXZlbZnp_lLN2L_t-kov-TPTzkkC4MrdqxPd5iUreDbFXt9xLC4uPEYTbJ-ddz7WH5n-uD_v8dvb-epgQ</recordid><startdate>19920801</startdate><enddate>19920801</enddate><creator>Meijler, Frits L.</creator><creator>Wittkampf, Fred H.M.</creator><creator>Brennen, Kenneth R.</creator><creator>Baker, Verne</creator><creator>Wassenaar, Claes</creator><creator>Bakken, Earl E.</creator><general>Elsevier Inc</general><general>Elsevier Science</general><scope>6I.</scope><scope>AAFTH</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19920801</creationdate><title>Electrocardiogram of the humpback whale (Megaptera noaeangliae) with specific reference to atrioventricular transmission and ventricular excitation</title><author>Meijler, Frits L. ; Wittkampf, Fred H.M. ; Brennen, Kenneth R. ; Baker, Verne ; Wassenaar, Claes ; Bakken, Earl E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c517t-f4f380ea20b991f89de5b86eb831011ff6f73f21d9c5103ea107d9df5f2b5c113</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Animals</topic><topic>Atrioventricular Node - physiology</topic><topic>Biological and medical sciences</topic><topic>Electrocardiography - veterinary</topic><topic>Electrophysiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Heart</topic><topic>Heart - anatomy & histology</topic><topic>Heart Conduction System - physiology</topic><topic>Organ Size</topic><topic>Ventricular Function - physiology</topic><topic>Vertebrates: cardiovascular system</topic><topic>Whales - anatomy & histology</topic><topic>Whales - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Meijler, Frits L.</creatorcontrib><creatorcontrib>Wittkampf, Fred H.M.</creatorcontrib><creatorcontrib>Brennen, Kenneth R.</creatorcontrib><creatorcontrib>Baker, Verne</creatorcontrib><creatorcontrib>Wassenaar, Claes</creatorcontrib><creatorcontrib>Bakken, Earl E.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of the American College of Cardiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Meijler, Frits L.</au><au>Wittkampf, Fred H.M.</au><au>Brennen, Kenneth R.</au><au>Baker, Verne</au><au>Wassenaar, Claes</au><au>Bakken, Earl E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrocardiogram of the humpback whale (Megaptera noaeangliae) with specific reference to atrioventricular transmission and ventricular excitation</atitle><jtitle>Journal of the American College of Cardiology</jtitle><addtitle>J Am Coll Cardiol</addtitle><date>1992-08-01</date><risdate>1992</risdate><volume>20</volume><issue>2</issue><spage>475</spage><epage>479</epage><pages>475-479</pages><issn>0735-1097</issn><eissn>1558-3597</eissn><coden>JACCDI</coden><abstract>Objectives. The objective of the study was to record the electrocardiogram (ECG) of a large whale to obtain crucial data for comparative electrophysiologic analysis.
Background. The data were needed to establish the mismatch between heart size and PR interval and QRS duration in mammals.
Methods. In the waters off the coast of Newfoundland, in two humpback whales (Megaptera novaeangliae) with an estimated weight of 30,000 kg a 1-lead ECG was recorded, enabling reliable assessment of P waves and QRS complexes.
Results. It was found that both the PR interval (atrioventricular [AV] transmission time) and QRS duration (ventricular excitation) are extremely short for animals of this size. These findings are difficult, if not impossible, to explain on the basis of currently accepted electrophysiologic theories. However, the narrow QRS complex may be due to a very dense His-Purkinje network in the ventricular wall of whales. Alternative mechanisms that can explain the function of the mammalian AV node need to be considered and explored.
Conclusions. The results of the study may be of value for the understanding of the ECG in humans.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>1634688</pmid><doi>10.1016/0735-1097(92)90120-C</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Animals Atrioventricular Node - physiology Biological and medical sciences Electrocardiography - veterinary Electrophysiology Fundamental and applied biological sciences. Psychology Heart Heart - anatomy & histology Heart Conduction System - physiology Organ Size Ventricular Function - physiology Vertebrates: cardiovascular system Whales - anatomy & histology Whales - physiology |
| title | Electrocardiogram of the humpback whale (Megaptera noaeangliae) with specific reference to atrioventricular transmission and ventricular excitation |
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