1
|
Whelchel DD, Tennent-Brown BS, Coleman AE, Rapoport GS, Blas-Machado U, Maisenbacher HW, Credille BC, Giguère S. Treatment of supraventricular tachycardia in a horse. J Vet Emerg Crit Care (San Antonio) 2017; 27:362-368. [DOI: 10.1111/vec.12591] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 06/23/2015] [Accepted: 08/19/2015] [Indexed: 11/29/2022]
Affiliation(s)
| | - Brett S. Tennent-Brown
- Faculty of Veterinary and Agricultural Sciences; University of Melbourne; Werribee VIC 3030 Australia
| | - Amanda E. Coleman
- College of Veterinary Medicine; University of Georgia; Athens GA 30602
| | - Gregg S. Rapoport
- College of Veterinary Medicine; University of Georgia; Athens GA 30602
| | | | | | | | - Steeve Giguère
- College of Veterinary Medicine; University of Georgia; Athens GA 30602
| |
Collapse
|
2
|
Shih AC, Case JB, Coisman JG, Isaza NM, Amora-Junior D, Maisenbacher HW. Cardiopulmonary Effects of Laparoscopic Ovariectomy of Variable Duration in Cats. Vet Surg 2014; 44 Suppl 1:2-6. [PMID: 25164690 DOI: 10.1111/j.1532-950x.2014.12241.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 05/01/2014] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate the cardiopulmonary effects of low-pressure (6 mmHg) peritoneal insufflation of varying duration in healthy cats during ovariectomy (OVE). STUDY DESIGN Prospective, randomized study. ANIMALS Female cats (n = 24). METHODS After anesthesia induction, cats had short (Short LAP; n = 8) or long duration (Long LAP; n = 8) laparoscopic ovariectomy, or Open OVE (Open; n = 8) for comparison. Hemodynamic and pulmonary measurements were recorded after induction of anesthesia (T0), 5 minutes after abdominal insufflation had reached 6 mmHg of pressure (T1), after the 2nd ovary had been resected (T2), after abdominal decompression (T3), and at the end of anesthesia, after abdominal closure (T4). Hemodynamic and pulmonary variables were compared between groups. RESULTS Low-pressure abdominal insufflation caused cardiopulmonary changes in cats. At T1 and T2, Long LAP and Short LAP caused a significant change in PvCO2 and RC when compared with Open. During T3, RC was lower only in Long LAP. At T2, there was decrease in SV, but not CO for Long LAP when compared with Open. CONCLUSIONS Duration of insufflation was associated with worsening of negative cardiopulmonary effects; however, these effects were reversible and resolved by the end of the procedure.
Collapse
Affiliation(s)
- Andre C Shih
- Department of Large Animal, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - J Brad Case
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - James G Coisman
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - Natalie M Isaza
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - Dorli Amora-Junior
- Department de Medicina Veterinaria, University of Parana, Parana, Brazil
| | - Herbert W Maisenbacher
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| |
Collapse
|
3
|
Winter MD, Giglio RF, Berry CR, Reese DJ, Maisenbacher HW, Hernandez JA. Associations between 'valentine' heart shape, atrial enlargement and cardiomyopathy in cats. J Feline Med Surg 2014; 17:447-52. [PMID: 25146363 DOI: 10.1177/1098612x14546339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
'Valentine' heart shape is a common qualifier used in veterinary radiology to describe a cardiac silhouette with focal enlargement at the level of the base of the heart in feline patients. Anecdotally, this sign has been thought to be related to biatrial enlargement and also to hypertrophic cardiomyopathy (HCM). However, to our knowledge, there has been no study performed to assess the association between cardiac chamber enlargement and cardiac disease with the 'valentine'-shaped heart. The aim of this study was to verify the association between the 'valentine' heart shape observed in ventrodorsal thoracic radiographs and the presence of singular or combined cardiac chamber enlargement, and also the presence and type of cardiomyopathy (CM) in cats. A search of the database of the Small Animal Veterinary Hospital of the University of Florida for cats with a radiology report of thoracic radiographs that contained the words 'valentine' and 'biatrial', and echocardiography performed within 1 week, was undertaken; 41 cases met the inclusion criteria. Eighty-two percent of the cats of the study sample had some form of CM. The 'valentine' heart shape was associated with biatrial enlargement in 41% of the patients in our study sample that had some form of CM and just 8% of cases diagnosed with HCM, suggesting that the 'valentine' heart shape has a low association with HCM or biatrial enlargement; however, it should be considered a sign of feline CM.
Collapse
Affiliation(s)
- Matthew D Winter
- Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Robson F Giglio
- Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Clifford R Berry
- Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - David J Reese
- Murdoch University, College of Veterinary Medicine, Western Australia, Australia
| | | | - Jorge A Hernandez
- Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| |
Collapse
|
4
|
Thieman Mankin KM, Dunbar MD, Toplon D, Ginn P, Maisenbacher HW, Risselada M. Rhabdomyosarcoma associated with the lead wire of a pacemaker generator implant. Vet Clin Pathol 2014; 43:276-80. [PMID: 24654997 DOI: 10.1111/vcp.12136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An 11-year-old female spayed Labrador Retriever was presented for a draining, painful subcutaneous mass palpated over a previously implanted pacemaker generator. Infection was suspected and the mass was removed surgically. On cut surface, the mass was friable and mottled tan to brown with firm pale tan nodules, surrounding the pacemaker lead wire adjacent to the pacemaker generator. Cytologic interpretation of impression smears was consistent with a sarcoma, and suggestive of a rhabdomyosarcoma due to the presence of strap-like cells. On histopathologic examination, a highly invasive nodular mass surrounded the pacemaker lead, composed of pleomorphic round, spindle and strap cells, and multinucleated giant cells. The population exhibited microscopic invasion into the deep portion of the fibrous capsule surrounding the pacemaker generator. There were tumor emboli within small to medium subcutaneous veins adjacent to the mass. Immunohistochemically, the neoplastic cells stained positive for α-sarcomeric actin and vimentin, and negative for α-smooth muscle actin, consistent with a rhabdomyosarcoma arising at the site of the pacemaker generator. To our knowledge, this is the first report of a rhabdomyosarcoma associated with the lead wire of a pacemaker generator in a dog.
Collapse
Affiliation(s)
- Kelley M Thieman Mankin
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | | | | | | | | | | |
Collapse
|
5
|
Cuddy LC, Maisenbacher HW, Vigani A, Berry C. Computed tomography angiography of coarctation of the aorta in a dog. J Vet Cardiol 2013; 15:277-81. [DOI: 10.1016/j.jvc.2013.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Revised: 09/04/2013] [Accepted: 09/05/2013] [Indexed: 11/24/2022]
|
6
|
Maisenbacher HW, Shroads AL, Zhong G, Daigle AD, Abdelmalak MM, Samper IS, Mincey BD, James MO, Stacpoole PW. Pharmacokinetics of Oral Dichloroacetate in Dogs. J Biochem Mol Toxicol 2013; 27:522-5. [DOI: 10.1002/jbt.21518] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/01/2013] [Accepted: 07/20/2013] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Guo Zhong
- Medicinal Chemistry; University of Florida; Gainesville FL 32610 USA
| | - Adam D. Daigle
- Small Animal Clinical Sciences; University of Florida; Gainesville FL 32610 USA
| | | | - Ivan Sosa Samper
- Small Animal Clinical Sciences; University of Florida; Gainesville FL 32610 USA
| | - Brandy D. Mincey
- Small Animal Clinical Sciences; University of Florida; Gainesville FL 32610 USA
| | - Margaret O. James
- Medicinal Chemistry; University of Florida; Gainesville FL 32610 USA
| | | |
Collapse
|
7
|
Pogue B, Estrada AH, Sosa-Samper I, Maisenbacher HW, Lamb KE, Mincey BD, Erger KE, Conlon TJ. Stem-cell therapy for dilated cardiomyopathy: a pilot study evaluating retrograde coronary venous delivery. J Small Anim Pract 2013; 54:361-6. [PMID: 23731226 DOI: 10.1111/jsap.12098] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 04/04/2013] [Accepted: 04/29/2013] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To evaluate retrograde coronary venous stem-cell delivery for Dobermanns with dilated cardiomyopathy. METHODS Retrograde coronary venous delivery of adipose-derived mesenchymal stem cells transduced with tyrosine mutant adeno-associated virus 2 to express stromal-derived factor-1 was performed in Dobermanns with dilated cardiomyopathy. Cases were followed for 2 years and electrocardiograms (ECG), echocardiograms and Holter monitoring were performed. RESULTS Delivery of cells was feasible in 15 of 15 dogs. One dog died following the development of ventricular fibrillation 24 hours after cell delivery. The remaining 14 dogs were discharged the following day without complications. Echocardiographic measurements of left ventricular size and function showed continued progression of disease. On the basis of Kaplan-Meier product limit estimates, median survival for dogs following stem-cell delivery was 620 days (range of 1-799 days). When including only the occult-dilated cardiomyopathy population and excluding those dogs already in congestive heart failure, median survival was 652 days (range of 46-799 days). CLINICAL SIGNIFICANCE Retrograde venous delivery of tyrosine mutant adeno-associated virus 2-stromal-derived factor-1 adipose-derived mesenchymal stem cells appears safe. Stem-cell therapy in dogs with occult-dilated cardiomyopathy does not appear to offer advantage compared to recently published survival data in similarly affected Dobermanns.
Collapse
Affiliation(s)
- B Pogue
- Department of Small Animal Clinical Sciences, University of Florida, Gainesville, FL 32610, USA
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Genovese DW, Estrada AH, Maisenbacher HW, Heatwole BA, Powell MA. Procedure times, complication rates, and survival times associated with single-chamber versus dual-chamber pacemaker implantation in dogs with clinical signs of bradyarrhythmia: 54 cases (2004–2009). J Am Vet Med Assoc 2013; 242:230-6. [DOI: 10.2460/javma.242.2.230] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Kleman ME, Estrada AH, Maisenbacher HW, Prošek R, Pogue B, Shih A, Paolillo JA. How to perform combined cutting balloon and high pressure balloon valvuloplasty for dogs with subaortic stenosis. J Vet Cardiol 2012; 14:351-61. [DOI: 10.1016/j.jvc.2011.11.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Revised: 07/27/2011] [Accepted: 11/01/2011] [Indexed: 11/28/2022]
|
10
|
Shih A, Maisenbacher HW, Bandt C, Ricco C, Bailey J, Rivera J, Estrada A. Assessment of cardiac output measurement in dogs by transpulmonary pulse contour analysis. J Vet Emerg Crit Care (San Antonio) 2011; 21:321-7. [DOI: 10.1111/j.1476-4431.2011.00651.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
11
|
Tyner D, Reese DJ, Maisenbacher HW. Computed tomography angiography of bilateral peripheral pulmonary arterial stenoses in a dog. J Vet Cardiol 2011; 13:57-62. [DOI: 10.1016/j.jvc.2010.11.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 10/13/2010] [Accepted: 11/22/2010] [Indexed: 10/18/2022]
|
12
|
Affiliation(s)
- Robert A Armentano
- Department of Small Animal Clinical Sciences, Veterinary Medical Center, University of Florida, Gainesville, FL 32610, USA
| | | | | |
Collapse
|
13
|
Sereda NC, Towl S, Maisenbacher HW, Bleweis MS, Levy JK, Byrne BJ, Ellison GW, Shih A, Coomer AR, Estrada AH. Intracardiac foreign body in a dog. J Vet Cardiol 2009; 11:53-8. [DOI: 10.1016/j.jvc.2009.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Revised: 02/25/2009] [Accepted: 03/06/2009] [Indexed: 10/20/2022]
|
14
|
Schmidt MK, Reynolds CA, Estrada AH, Prosek R, Maisenbacher HW, Sleeper MM, Oyama MA. Effect of azotemia on serum N-terminal proBNP concentration in dogs with normal cardiac function: a pilot study. J Vet Cardiol 2009; 11 Suppl 1:S81-6. [PMID: 19394913 DOI: 10.1016/j.jvc.2009.02.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Revised: 02/16/2009] [Accepted: 02/21/2009] [Indexed: 10/20/2022]
Abstract
OBJECTIVES To evaluate amino-terminal pro-B type natriuretic peptide (NT-proBNP) concentration in dogs with renal dysfunction and normal cardiac structure and function. ANIMALS Eight dogs with renal disease, 23 healthy control dogs. METHODS Serum NT-proBNP concentration was measured in healthy dogs and dogs with renal disease using an ELISA validated for use in dogs. Affected dogs were eligible for inclusion if renal dysfunction was diagnosed based on urinalysis and serum chemistry, and if they were free of cardiovascular disease based on physical exam, systolic blood pressure, and echocardiography. RESULTS The geometric mean serum NT-proBNP concentration was significantly higher in dogs with renal disease (617 pmol/L; 95% CI, 260-1467 pmol/L) than in healthy control dogs (261 pmol/L; 95% CI, 225-303 pmol/L; P=0.0014). There was a modest positive correlation between NT-proBNP and BUN and creatinine. Median NT-proBNP concentration was not significantly different between groups when indexed to BUN (median NT-proBNP:BUN ratio; renal, 14.2, IQR, 3.93-17.7 vs. control, 16.3, IQR, 9.94-21.2; P=0.29) or creatinine (median NT-proBNP:creatinine ratio; renal, 204, IQR, 72.6-448 vs. control, 227, IQR, 179-308; P=0.67). CONCLUSION Dogs with renal disease had significantly higher mean serum concentration of NT-proBNP than control dogs. Renal function should be considered when interpreting NT-proBNP results as concentrations may be falsely elevated in dogs with renal dysfunction and normal cardiac function. The effect of renal disease was lessened by indexing NT-proBNP to BUN or creatinine. Future studies in dogs with both renal and heart disease are warranted.
Collapse
Affiliation(s)
- M K Schmidt
- College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA.
| | | | | | | | | | | | | |
Collapse
|
15
|
Maisenbacher HW, Estrada AH, Prosek R, Shih AC, Vangilder JM. Evaluation of the effects of transvenous pacing site on left ventricular function and synchrony in healthy anesthetized dogs. Am J Vet Res 2009; 70:455-63. [PMID: 19335100 DOI: 10.2460/ajvr.70.4.455] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE-To compare the acute effects of cardiac pacing from various transvenous pacing sites on left ventricular (LV) function and synchrony in clinically normal dogs. ANIMALS-10 healthy adult mixed-breed dogs. PROCEDURES-Dogs were anesthetized, and dual-chamber transvenous biventricular pacing systems were implanted. Dogs were paced in single-chamber mode from the right atrial appendage (RAA) alone and in dual-chamber mode from the right ventricular apex (RVA), from the left ventricular free wall (LVFW), and simultaneously from the RVA and LVFW (BiV). Standard ECG and echocardiographic measurements, cardiac output measured with the lithium dilution method (LiDCO), and tissue Doppler-derived measurements of LV synchrony were obtained during each of the pacing configurations. RESULTS-Placement of the biventricular pacing systems was possible in 8 of the 10 dogs. The QRS duration was significantly different among all pacing sites, and the order of increasing duration was RAA, BiV, LVFW, and RVA. Pacing sites did not differ with respect to fractional shortening; however, pacing from the RVA resulted in a significantly lower ejection fraction than pacing from all other sites. During RVA and LVFW pacing, LiDCO was significantly lower than that at other sites; there was no significant difference between RAA and BiV pacing with respect to LiDCO. Although the degree of dyssynchrony was significantly lower during pacing from the RAA versus other ventricular pacing sites, it was not significantly different among sites. CONCLUSIONS AND CLINICAL RELEVANCE-Ventricular activation by RAA pacing provided the best LV function and synchrony. Pacing from the RVA worsened LV function, and although pacing from the LVFW improved it, BiV pacing may provide additional improvement.
Collapse
Affiliation(s)
- Herbert W Maisenbacher
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA
| | | | | | | | | |
Collapse
|
16
|
Affiliation(s)
- Carley A Saelinger
- Section of Cardiology, Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610-0126, USA
| | | | | |
Collapse
|
17
|
Adin DB, Maisenbacher HW, Ojeda N, Fiorello CV, Estrada AH, Prosek R, Citino SB. Cardiac evaluation of anesthetized Grevy's zebras(Equus grevyi). Am J Vet Res 2007; 68:148-52. [PMID: 17269879 DOI: 10.2460/ajvr.68.2.148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine ECG and echocardiographic measurements in healthy anesthetized Grevy's zebras (Equus grevyi). ANIMALS 20 healthy zebras. PROCEDURES Auscultation, base-apex ECG, and echocardiography were performed on anesthetized zebras. RESULTS Low-grade systolic murmurs were detected in the left basilar region in 4 of 20 zebras. Evaluation of ECGs from 19 zebras revealed sinus rhythm with a predominantly negative QRS complex and a mean +/- SD heart rate of 67 +/- 10 beats/min. Echocardiograms of sufficient image quality were obtained for 16 zebras. Interventricular septal thickness in diastole, left ventricular chamber in diastole and systole, left atrial diameter, and left ventricular mass were significantly and moderately correlated with estimated body weight (r values ranged from 0.650 to 0.884). Detectable swirling of blood in the right and sometimes the left ventricles was detected in 9 of 16 zebras, whereas physiologic regurgitation of blood was detected for the aortic valve in 3 zebras, pulmonary valve in 2 zebras, mitral valve in 2 zebras, and tricuspid valve in 1 zebra. CONCLUSIONS AND CLINICAL RELEVANCE Results of this study provide reference information for use in the cardiac evaluation of anesthetized Grevy's zebras.
Collapse
Affiliation(s)
- Darcy B Adin
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA
| | | | | | | | | | | | | |
Collapse
|
18
|
Affiliation(s)
- Herbert W Maisenbacher
- Section of Cardiology, Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610-0126, USA
| | | |
Collapse
|