The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females

Objectives The goal of this study was to characterize for the first time the electrocardiogram (ECG) of the southern sea lion (SSL) Otaria flavescens. Animals, materials and methods Thirteen wild SSL females were captured at Isla de Lobos (Uruguay) and anaesthetized with isoflurane. Electrocardiogra...

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Autores principales:	Dassis, M., Rodríguez, D.H., Rodríguez, E., Ponce De León, A., Castro, E.
Formato:	JOUR
Materias:	Dive physiology Electrocardiography Isoflurane anaesthesia Pinnipeds isoflurane inhalation anesthetic agent adult allometry anesthesia Article electrocardiogram electrocardiography female heart rate nonhuman Otaria flavescens Otariidae P wave PR interval prediction priority journal QRS complex QT interval sinus rhythm ST segment ST segment depression T wave Uruguay animal reference value veterinary wild animal Anesthetics, Inhalation Animals Animals, Wild Female Isoflurane Reference Values Sea Lions
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_17602734_v18_n1_p71_Dassis
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_17602734_v18_n1_p71_Dassis
record_format	dspace
spelling	todo:paper_17602734_v18_n1_p71_Dassis2023-10-03T16:32:50Z The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females Dassis, M. Rodríguez, D.H. Rodríguez, E. Ponce De León, A. Castro, E. Dive physiology Electrocardiography Isoflurane anaesthesia Pinnipeds isoflurane inhalation anesthetic agent adult allometry anesthesia Article electrocardiogram electrocardiography female heart rate nonhuman Otaria flavescens Otariidae P wave PR interval prediction priority journal QRS complex QT interval sinus rhythm ST segment ST segment depression T wave Uruguay animal Otariidae reference value veterinary wild animal Anesthetics, Inhalation Animals Animals, Wild Electrocardiography Female Isoflurane Reference Values Sea Lions Objectives The goal of this study was to characterize for the first time the electrocardiogram (ECG) of the southern sea lion (SSL) Otaria flavescens. Animals, materials and methods Thirteen wild SSL females were captured at Isla de Lobos (Uruguay) and anaesthetized with isoflurane. Electrocardiographic recording was performed on anaesthetized animals at ventral recumbence following standardized procedures. Results The ECG recordings showed normal sinus rhythm. Amplitude and duration of P and T waves, QRS complex, PR interval, QT interval and ST segment (STS) were determined for all animals in all leads. QT corrected was determined in lead II. P wave polarity was consistent among animals (positive in LI, LII, LIII and AVF leads and negative in AVL and AVR leads for all animals), but T wave polarity did not present any constant pattern among animals, being either positive, negative or biphasic in different leads and different animals. The PR interval (0.15 ± 0.2 s) was similar to the allometric prediction for most of mammalian species including humans. The STS were normal in 10 of the SSL but showed STS depression in three of the animals. Almost all animals had a negative electrical axis (-30° to -120°), with one exception that showed a positive electrical axis (120°). Mean eupnoeic heart rate was 104.61 ± 10.06 (range = 88-120) beats per minute. Conclusions This study was the first ECG description for this species, and provides valuable information for cardiac monitoring during anaesthesia. © 2016 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17602734_v18_n1_p71_Dassis
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Dive physiology Electrocardiography Isoflurane anaesthesia Pinnipeds isoflurane inhalation anesthetic agent adult allometry anesthesia Article electrocardiogram electrocardiography female heart rate nonhuman Otaria flavescens Otariidae P wave PR interval prediction priority journal QRS complex QT interval sinus rhythm ST segment ST segment depression T wave Uruguay animal Otariidae reference value veterinary wild animal Anesthetics, Inhalation Animals Animals, Wild Electrocardiography Female Isoflurane Reference Values Sea Lions
spellingShingle	Dive physiology Electrocardiography Isoflurane anaesthesia Pinnipeds isoflurane inhalation anesthetic agent adult allometry anesthesia Article electrocardiogram electrocardiography female heart rate nonhuman Otaria flavescens Otariidae P wave PR interval prediction priority journal QRS complex QT interval sinus rhythm ST segment ST segment depression T wave Uruguay animal Otariidae reference value veterinary wild animal Anesthetics, Inhalation Animals Animals, Wild Electrocardiography Female Isoflurane Reference Values Sea Lions Dassis, M. Rodríguez, D.H. Rodríguez, E. Ponce De León, A. Castro, E. The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females
topic_facet	Dive physiology Electrocardiography Isoflurane anaesthesia Pinnipeds isoflurane inhalation anesthetic agent adult allometry anesthesia Article electrocardiogram electrocardiography female heart rate nonhuman Otaria flavescens Otariidae P wave PR interval prediction priority journal QRS complex QT interval sinus rhythm ST segment ST segment depression T wave Uruguay animal Otariidae reference value veterinary wild animal Anesthetics, Inhalation Animals Animals, Wild Electrocardiography Female Isoflurane Reference Values Sea Lions
description	Objectives The goal of this study was to characterize for the first time the electrocardiogram (ECG) of the southern sea lion (SSL) Otaria flavescens. Animals, materials and methods Thirteen wild SSL females were captured at Isla de Lobos (Uruguay) and anaesthetized with isoflurane. Electrocardiographic recording was performed on anaesthetized animals at ventral recumbence following standardized procedures. Results The ECG recordings showed normal sinus rhythm. Amplitude and duration of P and T waves, QRS complex, PR interval, QT interval and ST segment (STS) were determined for all animals in all leads. QT corrected was determined in lead II. P wave polarity was consistent among animals (positive in LI, LII, LIII and AVF leads and negative in AVL and AVR leads for all animals), but T wave polarity did not present any constant pattern among animals, being either positive, negative or biphasic in different leads and different animals. The PR interval (0.15 ± 0.2 s) was similar to the allometric prediction for most of mammalian species including humans. The STS were normal in 10 of the SSL but showed STS depression in three of the animals. Almost all animals had a negative electrical axis (-30° to -120°), with one exception that showed a positive electrical axis (120°). Mean eupnoeic heart rate was 104.61 ± 10.06 (range = 88-120) beats per minute. Conclusions This study was the first ECG description for this species, and provides valuable information for cardiac monitoring during anaesthesia. © 2016 Elsevier B.V. All rights reserved.
format	JOUR
author	Dassis, M. Rodríguez, D.H. Rodríguez, E. Ponce De León, A. Castro, E.
author_facet	Dassis, M. Rodríguez, D.H. Rodríguez, E. Ponce De León, A. Castro, E.
author_sort	Dassis, M.
title	The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females
title_short	The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females
title_full	The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females
title_fullStr	The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females
title_full_unstemmed	The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females
title_sort	electrocardiogram of anaesthetized southern sea lion (otaria flavescens) females
url	http://hdl.handle.net/20.500.12110/paper_17602734_v18_n1_p71_Dassis
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The electrocardiogram of anaesthetized southern sea lion (Otaria flavescens) females

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