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Boutet BG, Gordon SG, De Solis CN, Lepiz MA, Saunders AB, Wesselowski S. Feasibility and clinical utility of transvenous intracardiac echocardiography in conscious, sedated horses. J Vet Cardiol 2022; 42:15-22. [DOI: 10.1016/j.jvc.2022.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 04/26/2022] [Accepted: 05/04/2022] [Indexed: 10/18/2022]
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Pelzek C, Rhinehart J, Villalba M, Schober K, Winter R, Berman D. Transient high-grade second-degree atrioventricular block secondary to transvenous atrial septal defect occlusion in a dog. J Vet Cardiol 2022; 41:30-38. [DOI: 10.1016/j.jvc.2022.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 01/06/2022] [Accepted: 01/13/2022] [Indexed: 11/29/2022]
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Saunders AB. Key considerations in the approach to congenital heart disease in dogs and cats. J Small Anim Pract 2021; 62:613-623. [PMID: 34180062 DOI: 10.1111/jsap.13360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/12/2021] [Accepted: 04/29/2021] [Indexed: 11/26/2022]
Abstract
Congenital heart disease is an important subset of all cardiovascular disease in dogs and cats that is present at birth and most often detected in young animals but can be diagnosed in adulthood. The range of abnormalities that can occur during development of the heart is vast incorporating simple and complex defects, varying degrees of severity and clinical presentations that include heart failure and cyanosis. While some defects do not result in morbidity in an individual animal, others cause severe clinical signs and death at a young age. Advances in imaging and expanding treatment options offer increasingly more possibilities in the diagnosis and management of congenital heart disease which is the focus of this review. The objective is to provide a broad overview of current practice and highlight key aspects to guide practitioners in their approach to congenital heart disease diagnosis and knowledge of available treatment options.
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Affiliation(s)
- A B Saunders
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
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Mizuno T, Mizuno M, Harada K, Takano H, Shinoda A, Takahashi A, Mamada K, Takamura K, Chen A, Iwanaga K, Ono S, Uechi M. Surgical correction for sinus venosus atrial septal defect with partial anomalous pulmonary venous connection in a dog. J Vet Cardiol 2020; 28:23-30. [DOI: 10.1016/j.jvc.2020.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 01/30/2020] [Accepted: 01/30/2020] [Indexed: 11/27/2022]
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Sugimoto K, Mochizuki Y, Kanda T, Ohnishi A, Miyabe M, Wada Y, Kochi M, Aoki T. Atrial septal defect closure in a midget toy poodle. Open Vet J 2020; 10:11-15. [PMID: 32426251 PMCID: PMC7193879 DOI: 10.4314/ovj.v10i1.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/20/2019] [Indexed: 11/17/2022] Open
Abstract
Background Atrial septal defect (ASD) is a rare congenital cardiac disease, and there have been no reports about the treatment of ASD in midget breed dogs. Case Description A 7-month-old female toy poodle weighing 1.4 kg presented with cardiac enlargement. Echocardiography revealed a secundum-type ASD, right ventricular and atrial enlargement, and pulmonary hypertension. Blood flow through the ASD exhibited left-to-right shunting. The dog underwent ASD closure through a hybrid approach, in conjunction with catheter techniques and thoracotomy. Ten months after treatment, cardiac enlargement and pulmonary hypertension were improved. Conclusion Even in midget dog breeds, ASD can be corrected through a hybrid approach.
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Affiliation(s)
- Keisuke Sugimoto
- Department of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Yohei Mochizuki
- Department of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Teppei Kanda
- Department of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Akihiro Ohnishi
- Department of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Masahiro Miyabe
- Department of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Yuko Wada
- Department of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Masaki Kochi
- Division of Cardiology, Matsubara Animal Hospital, Matsubara, Osaka 580-0044, Japan
| | - Takuma Aoki
- Department of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
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LeBlanc NL, Agarwal D, Menzen E, Nomi K, Sisson DD, Scollan KF. Prevalence of major complications and procedural mortality in 336 dogs undergoing interventional cardiology procedures in a single academic center. J Vet Cardiol 2019; 23:45-57. [PMID: 31174729 DOI: 10.1016/j.jvc.2019.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Overall complication rates associated with a wide range of diagnostic and therapeutic interventional cardiac procedures in a contemporary academic setting have not been reported. ANIMALS, MATERIALS AND METHODS Consecutive interventional procedures performed for client-owned dogs were retrospectively analyzed to characterize procedural complications and mortality. RESULTS Three hundred sixty-four procedures were performed on 336 dogs. Interventions included attempted or completed transvenous pacemaker (PM) implantation (n = 134) with subsequent pacing system revision (n = 8), pulmonic balloon valvuloplasty (BVP) (n = 117) with a subset of patients undergoing an additional BVP (n = 14), transarterial closure of left-to-right shunting patent ductus arteriosus (PDA) (n = 66), diagnostic angiography and/or cardiovascular pressure measurement (n = 9), transvenous temporary pacing (n = 7), septal defect occlusion (n = 5), heartworm extraction (n = 3), and BVP catheter fragment retrieval (n = 1). The prevalence of major perioperative and postoperative complications for all procedures was 5% and 6%, respectively, and the procedural mortality rate was 2%. The overall rate of major complications was 12% for the PM group, 11% for the BVP group, and 2% for the PDA occlusion group. Both PM implantation and BVP have higher rates of major complications overall compared with PDA occlusion (p=0.0151). CONCLUSIONS The results of this study indicate that the prevalence of major complications and mortality associated with interventional cardiac procedures is low; however, significant differences exist in complication rates between procedures.
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Affiliation(s)
- N L LeBlanc
- Oregon State University, Department of Clinical Sciences, College of Veterinary Medicine, 105 Magruder Hall, 700 SW 30(th) Street, Corvallis, Oregon 97331, USA.
| | - D Agarwal
- MedVet Medical and Cancer Center for Pets, Cardiology Department, 3964 Red Bank Road, Cincinnati, Ohio 45227, USA
| | - E Menzen
- Oregon State University, Department of Clinical Sciences, College of Veterinary Medicine, 105 Magruder Hall, 700 SW 30(th) Street, Corvallis, Oregon 97331, USA
| | - K Nomi
- Oregon State University, Department of Clinical Sciences, College of Veterinary Medicine, 105 Magruder Hall, 700 SW 30(th) Street, Corvallis, Oregon 97331, USA
| | - D D Sisson
- Oregon State University, Department of Clinical Sciences, College of Veterinary Medicine, 105 Magruder Hall, 700 SW 30(th) Street, Corvallis, Oregon 97331, USA
| | - K F Scollan
- Oregon State University, Department of Clinical Sciences, College of Veterinary Medicine, 105 Magruder Hall, 700 SW 30(th) Street, Corvallis, Oregon 97331, USA
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Goya S, Kanno N, Teshima K, Anndo T, Fujioka T. Surgery for partial atrioventricular septal defect with pulmonary hypertension in an adult dog. J Vet Med Sci 2018; 80:1183-1189. [PMID: 29877312 PMCID: PMC6068305 DOI: 10.1292/jvms.17-0509] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 4-year-old, 5.9-kg female Japanese Spitz presented with syncope and exercise intolerance. Echocardiography revealed an ostium primum atrial septal defect (ASD), a cleft mitral valve,
mitral valve regurgitation (MR), and tricuspid regurgitation (TR) (velocity: 3.6 m/sec, pressure gradient: 52 mmHg), leading to a diagnosis of partial atrioventricular septal defect (AVSD)
with moderate pulmonary hypertension (PH). Open-heart surgery using cardiopulmonary bypass was performed through right atriotomy. The cleft of the mitral valve was sutured with polypropylene
and the AVSD was closed using an autologous pericardial patch fixed with glutaraldehyde. No postoperative pulmonary hypertensive crisis occurred. Shunting flow through the ASD, TR and PH had
completely disappeared 2 months postoperatively; however, moderate MR persisted. The dog is still alive 5 years postoperatively without clinical signs.
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Affiliation(s)
- Seijirow Goya
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu-shi, Tokyo 183-8509, Japan
| | - Nobuyuki Kanno
- Veterinary Cardiovascular Medicine and Surgery Unit, Laboratory of Veterinary Internal Medicine, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Kenji Teshima
- Laboratory of Veterinary Anesthesiology & Respiratory Research, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Takanori Anndo
- Heart Will Animal Hospital, 1-2-14 Okidai, Tobata, Kitakyushu, Fukuoka 804-0064, Japan
| | - Takahiro Fujioka
- ASAP Animal Clinic, 3597-1 Kannda, Nougata-shi, Fukuoka 822-0001, Japan
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Shelden A, Wesselowski S, Gordon S, Saunders A. Transcatheter closure of a small atrial septal defect with an Amplatzer™ patent foramen ovale occluder in a working dog with cyanosis and exercise intolerance at high altitude. J Vet Cardiol 2017; 19:523-529. [DOI: 10.1016/j.jvc.2017.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/25/2017] [Accepted: 09/11/2017] [Indexed: 12/21/2022]
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Colpitts M, Malinowski M, Phillion R, Coleman R, Mitchell L, Malone A, Eberhart L, Sanders R, Langholz D. Echocardiographic imaging options in ovine research subjects. J Vet Cardiol 2017; 19:502-513. [PMID: 29097107 DOI: 10.1016/j.jvc.2017.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 09/13/2017] [Accepted: 09/21/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVES To determine the feasibility of acquiring quality transesophageal (TEE), epicardial (EE), and intracardiac (ICE) echocardiographic images in ovine subjects and to discuss the merits of each technique with a focus on ICE image acquisition. ANIMALS Eleven male castrated Dorset adult sheep. METHODS Transesophageal echocardiography was performed under general anesthesia. Epicardial echocardiography was performed as part of an open chest (thoracotomy or sternotomy) experiment. Subjects were recovered with permanent jugular vein indwelling catheter and ICE from this approach was described. Feasibility of each technique was qualitatively assessed based on subjective image quality from three images for each image plane in each sheep. RESULTS Transesophageal echocardiography was technically challenging and did not provide adequate image quality for consistent interpretation. Epicardial echocardiography and ICE had more favorable results with ICE demonstrating unique benefits for post-operative serial monitoring. CONCLUSIONS Epicardial echocardiography and ICE were effective imaging techniques. Epicardial echocardiography required the least specialized training but was considered to have limited feasibility due to its requirement for an open chest procedure. Even with the necessity for permanent indwelling jugular cannulation, ICE was the least invasive of the three imaging techniques and potentially the most practical approach for chronic studies by minimizing post-operative stress. Transesophageal echocardiography was not a feasible technique in this study.
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Affiliation(s)
- M Colpitts
- Division of Cardiovascular Medicine, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA.
| | - M Malinowski
- Division of Cardiothoracic Surgery, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA; Medical University of Silesia, Department of Cardiac Surgery, Ziolowa 47, 40-635, Katowice, Poland
| | - R Phillion
- Division of Cardiovascular Medicine, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA
| | - R Coleman
- Division of Cardiovascular Medicine, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA
| | - L Mitchell
- Division of Cardiovascular Medicine, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA
| | - A Malone
- Division of Cardiovascular Medicine, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA
| | - L Eberhart
- Division of Cardiovascular Medicine, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA
| | - R Sanders
- Michigan State University - College of Veterinary Medicine, Department of Cardiology, 736 Wilson Road, East Lansing, MI 48823, USA
| | - D Langholz
- Division of Cardiovascular Medicine, Spectrum Health, 100 Michigan St NE, Grand Rapids, MI 49503, USA
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Hezzell MJ, Dennis S, Lewis DH, Fuentes VL. Gerbode defect associated with blunt trauma in a dog. J Vet Cardiol 2011; 13:141-6. [PMID: 21641897 DOI: 10.1016/j.jvc.2010.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 10/19/2010] [Accepted: 12/29/2010] [Indexed: 11/24/2022]
Abstract
A 6 year-old Labrador retriever was presented after being struck by a car. A ventricular arrhythmia, attributed to myocardial trauma, developed 12 h post-trauma. Echocardiography revealed lesions consistent with a subaortic paramembranous ventricular septal defect (VSD) with shunting of blood from the left ventricle to the right atrium (Gerbode defect). A right-to-left shunting atrial septal defect (ASD) was visualised. Pleural and peritoneal effusions developed within 48 h. Fifteen days post-trauma flow across the ASD was left-to-right while left-to-right shunting across the VSD persisted. No cavitary effusions were detected at 15 days post-trauma or subsequently.
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Affiliation(s)
- Melanie J Hezzell
- Department of Veterinary Clinical Sciences, The Royal Veterinary College, Hawkshead Lane, North Mymms, Hertfordshire AL9 7TA, UK.
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Uechi M, Harada K, Mizukoshi T, Mizuno T, Mizuno M, Ebisawa T, Ohta Y. Surgical Closure of an Atrial Septal Defect Using Cardiopulmonary Bypass in a Cat. Vet Surg 2011; 40:413-7. [DOI: 10.1111/j.1532-950x.2011.00798.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Cavalcanti G, Tatibana L, Varaschin M, Araújo R, Val AC. Atrial septal defect in an elderly dog. ARQ BRAS MED VET ZOO 2011. [DOI: 10.1590/s0102-09352011000200033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Tobias AH, Stauthammer CD. Minimally invasive per-catheter occlusion and dilation procedures for congenital cardiovascular abnormalities in dogs. Vet Clin North Am Small Anim Pract 2010; 40:581-603. [PMID: 20610013 DOI: 10.1016/j.cvsm.2010.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
With ever-increasing sophistication of veterinary cardiology, minimally invasive per-catheter occlusion and dilation procedures for the treatment of various congenital cardiovascular abnormalities in dogs have become not only available, but mainstream. Much new information about minimally invasive per-catheter patent ductus arteriosus occlusion has been published and presented during the past few years. Consequently, patent ductus arteriosus occlusion is the primary focus of this article. Occlusion of other less common congenital cardiac defects is also briefly reviewed. Balloon dilation of pulmonic stenosis, as well as other congenital obstructive cardiovascular abnormalities is discussed in the latter part of the article.
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Affiliation(s)
- Anthony H Tobias
- Veterinary Clinical Sciences Department, University of Minnesota, St Paul, MN 55108, USA.
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Gordon SG, Nelson DA, Achen SE, Miller MM, Roland RM, Saunders AB, Drourr LT. Open heart closure of an atrial septal defect by use of an atrial septal occluder in a dog. J Am Vet Med Assoc 2010; 236:434-9. [DOI: 10.2460/javma.236.4.434] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gordon S, Miller M, Roland R, Saunders A, Achen S, Drourr L, Nelson D. Transcatheter Atrial Septal Defect Closure with the AMPLATZER®Atrial Septal Occluder in 13 Dogs: Short- and Mid-Term Outcome. J Vet Intern Med 2009; 23:995-1002. [DOI: 10.1111/j.1939-1676.2009.0365.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Serres F, Chetboul V, Tissier R, Gouni V, Desmyter A, Sampedrano CC, Pouchelon JL. Quantification of pulmonary to systemic flow ratio by a Doppler echocardiographic method in the normal dog: Repeatability, reproducibility, and reference ranges. J Vet Cardiol 2009; 11:23-9. [DOI: 10.1016/j.jvc.2009.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 04/17/2009] [Accepted: 04/17/2009] [Indexed: 10/20/2022]
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Saunders AB, Miller MW, Gordon SG, Bahr A. Echocardiographic and Angiographic Comparison of Ductal Dimensions in Dogs with Patent Ductus Arteriosus. J Vet Intern Med 2007. [DOI: 10.1111/j.1939-1676.2007.tb02930.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Chetboul V, Trollé JM, Nicolle A, Carlos Sampedrano C, Gouni V, Laforge H, Benalloul T, Tissier R, Pouchelon JL. Congenital Heart Diseases in the Boxer Dog: A Retrospective Study of 105 Cases (1998â2005). ACTA ACUST UNITED AC 2006; 53:346-51. [PMID: 16922831 DOI: 10.1111/j.1439-0442.2006.00865.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Subaortic stenosis (SAS) is one of the most common congenital heart diseases (CHD) in dogs with Boxers being predominantly affected. However, the increasing availability of modern diagnostic imaging systems now allows a better assessment of cardiac morphology and function, thereby facilitating early detection of CHD in awake animals. In this context, the case records of Boxer dogs diagnosed with CHD using echocardiography combined with Doppler mode, were retrospectively reviewed (1998-2005). One hundred and five Boxers exhibiting either a single CHD (53/105, 50.5%) or association of several CHD (52/105, 49.5%) were included. The most common CHD was atrial septal defect (ASD) observed in 56.2% of these animals (59/105), followed by mitral dysplasia (58/105, 55.2%), and SAS (49/105, 46.7%). SAS was associated with one or two CHD in 29.5% of cases (31/105). Most of the dogs with a low intensity left heart base systolic murmur had an isolated ASD whereas most of the dogs with a similar but high intensity murmur had SAS, either isolated or associated with a concurrent CHD. The incidence of ASD and mitral dysplasia in Boxer dogs is higher than previously assumed, and ASD is a common cause of left heart base systolic murmur in this breed of dog. This confirms that the detection of such a murmur should not be used as the unique criterion for diagnostic confirmation of SAS.
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Affiliation(s)
- V Chetboul
- Cardiology Unit of Alfort, National Veterinary School of Alfort, 7 avenue du General de Gaulle, 94704 Maisons-Alfort cedex, France.
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Chetboul V, Charles V, Nicolle A, Sampedrano CC, Gouni V, Pouchelon JL, Tissier R. Retrospective Study of 156 Atrial Septal Defects in Dogs and Cats (2001-2005). ACTA ACUST UNITED AC 2006; 53:179-84. [PMID: 16629951 DOI: 10.1111/j.1439-0442.2006.00813.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Atrial septal defect (ASD) is a common congenital heart disease (CHD) in humans, but considered relatively rare in veterinary medicine. However, modern echocardiographic and Doppler techniques currently offer a good view of the morphology of the interatrial septum, thus facilitating earlier detection of ASD in awake animals. In this context, we carried out a retrospective study of cases of recently diagnosed ASD in dogs and cats at the Cardiology Unit of Alfort (2001-2005) using echocardiography combined with colour Doppler mode. ASD was diagnosed in 156 animals and represented 37.7% of all canine and feline CHDs (n = 414). ASD was the most common CHD after mitral dysplasia in both species. Boxer and Domestic shorthair were the most common canine and feline breeds affected. Most defects (98.7%) were secundum-type ASD, without clinical signs in 73.7% of cases. The most common clinical signs included systolic murmur heard over the left heart base (20.2%), exercise intolerance (7.0%), syncope (5.3%), dyspnoea (2.6%) and cough (2.6%). Animals that presented a systolic heart murmur over the left base had a significantly larger ASD than others (P < 0.05). These data suggest that the incidence of ASD is higher than previously assumed. ASD should be suspected, for example, in instances of left basal systolic heart murmur, although its clinical and haemodynamic consequences are usually minor.
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Affiliation(s)
- V Chetboul
- Pharmacy-Toxicology Unit of Alfort, INSERM U660, National Veterinary School of Alfort, 7 Avenue du General de Gaulle, 94704 Maisons-Alfort Cedex, France.
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