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Dear JD, Hulsebosch SE, Johnson LR. Recognition and Diagnosis of Underlying Disease Processes in Bacterial Pneumonia. Animals (Basel) 2024; 14:1601. [PMID: 38891647 PMCID: PMC11171252 DOI: 10.3390/ani14111601] [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: 04/18/2024] [Revised: 05/21/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Bacterial pneumonia can present in both dogs and cats as either acute or chronic disease, and clinical signs may suggest respiratory or systemic impairment. Aspiration pneumonia, a common form of disease, can be caused by esophageal or laryngeal disease, vomiting, or altered mentation, such as with CNS disease or general anesthesia. Bacterial pneumonia can also develop due to inhaled airway foreign bodies, reduced local immune function, or impaired clearance of respiratory secretions. Rapid identification of the etiology and associated risk factors for pneumonia can help veterinarians develop a targeted therapeutic plan and prevent recurrence of disease.
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Affiliation(s)
- Jonathan D. Dear
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA; (S.E.H.); (L.R.J.)
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Constantinescu R, Istrate A, Sumping JC, Dye C, Schiborra F, Mortier JR. Computed tomographic findings in dogs with suspected aspiration pneumonia: 38 cases (2014‐2019). J Small Anim Pract 2022; 64:280-287. [PMID: 36428285 DOI: 10.1111/jsap.13575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 08/26/2022] [Accepted: 10/13/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To describe computed tomographic (CT) findings in dogs diagnosed with aspiration pneumonia and to assess for any correlation with patient outcome. MATERIALS AND METHODS Retrospective analysis of 38 cases with a presumptive diagnosis of aspiration pneumonia at two UK referral centres. Medical records were reviewed for signalment, history, physical examination and clinicopathologic data. CT examinations of the thorax were reviewed by the European College of Veterinary Diagnostic Imaging board-certified radiologist for all dogs to describe the characteristics and distribution of the pulmonary lesions. RESULTS The most common CT findings were lung lobe consolidation associated with air bronchograms (100%) followed by ground-glass attenuation (89.4%), bronchial wall thickening (36.8%), bronchiolectasis (31.5%) and bronchiectasis (15.7%). Large-breed dogs were overrepresented. Duration of hospitalisation ranged between 0 and 8 days (mean 3 days). Overall, 89.4% of dogs survived the aspiration event and were discharged from the hospital. The four dogs that did not survive to discharge had five or more lobes affected on CT. CLINICAL SIGNIFICANCE CT findings in dogs with aspiration pneumonia are described. CT is a useful imaging modality to diagnose aspiration pneumonia.
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Affiliation(s)
| | - A. Istrate
- Pride Veterinary Centre, Riverside Road Derby DE24 8HX UK
| | - J. C. Sumping
- Small Animal Teaching Hospital Institute of Veterinary Science, University of Liverpool, Chester High Road Neston CH647TE UK
| | - C. Dye
- Pride Veterinary Centre, Riverside Road Derby DE24 8HX UK
| | - F. Schiborra
- Small Animal Teaching Hospital Institute of Veterinary Science, University of Liverpool, Chester High Road Neston CH647TE UK
| | - J. R. Mortier
- Centre Hospitalier Universitaire Vétérinaire d'Alfort, École Nationale Vétérinaire d'Alfort Maisons‐Alfort 94700 France
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Lebastard M, Beurlet‐Lafarge S, Gomes E, Le Boedec K. Association between quantitative bacterial culture of bronchoalveolar lavage fluid and antibiotic requirement in dogs with lower respiratory tract signs. J Vet Intern Med 2022; 36:1444-1453. [PMID: 35616218 PMCID: PMC9308423 DOI: 10.1111/jvim.16456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/10/2022] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Historically, positive bacterial cultures from the lower respiratory tract (LRT) have been considered clinically relevant when quantitative bacterial cultures of bronchoalveolar lavage fluid (BALF) were >1700 colony forming units (cfu)/mL. However, this threshold might not accurately predict a requirement for antibiotics. OBJECTIVES To study whether quantitative BALF bacterial culture results were predictive of antibiotic requirement in dogs with LRT signs. ANIMALS Thirty-three client-owned dogs. METHODS Cross-sectional study. Dogs with positive quantitative bacterial culture of BALF were included. Dogs were divided into 2 groups, depending on whether they had a LRT infection requiring antibiotics (LRTI-RA) or LRT disease not requiring antibiotics (LRTD-NRA), based on thoracic imaging features, presence of intracellular bacteria on BALF cytology, and response to treatment. Predictive effect of cfu/mL and BALF total nucleated cell count (TNCC) on antibiotic requirement, adjusting for ongoing or prior antibiotic therapy and age, were studied using logistic regression. RESULTS Twenty-two and 11 dogs were included in the LRTI-RA and LRTD-NRA groups, respectively. The cfu/mL was not significantly predictive of antibiotic requirement, independent of ongoing or prior antibiotic treatment and age (LRTI-RA: median, 10 000 cfu/mL; range, 10-3 × 108 ; LRTD-NRA: median, 10 000 cfu/mL; range, 250-1.3 × 109 ; P = .27). The TNCC was not significantly predictive of antibiotic requirement when only dogs with bronchial disease were considered (LRTI-RA: median, 470 cells/μL; range, 240-2260; LRTD-NRA: median, 455 cells/μL; range, 80-4990; P = .57). CONCLUSION AND CLINICAL IMPORTANCE The cfu/mL is an inappropriate measure for determining whether antibiotics are of benefit in dogs with LRT signs.
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Lippi I, Habermaass V, Gori E, Ebani VV, Pierini A, Marchetti V. Urinary Cytology: Potential Role in Canine Urinary Tract Infections. Vet Sci 2022; 9:vetsci9060304. [PMID: 35737356 PMCID: PMC9228025 DOI: 10.3390/vetsci9060304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/07/2022] [Accepted: 06/16/2022] [Indexed: 11/16/2022] Open
Abstract
The diagnosis of urinary tract infections (UTIs) requires a concomitant evaluation of clinical signs and urine culture, which is of fundamental to start an appropriate antibiotic treatment. Several factors, such as subclinical bacteriuria or pre-analytical errors, may make the interpretation of urine culture difficult. The aim of the study was to evaluate the association between the finding of neutrophils and bacteria in unstained and stained canine urine sediment and the presence of clinical signs and positive urine culture. Urine samples from 35 dogs with clinical signs of UTI and 55 asymptomatic dogs with risk factors for UTI were prospectively collected by cystocentesis, divided into three aliquots, and submitted for: (1) physical and chemical Dipstick analysis and unstained urinary sediment (casts, crystals, bacteria, leucocytes, cells, parasites); (2) stained urinary sediment (extra/intracellular bacteria, degenerated and non-degenerated neutrophils); (3) qualitative and quantitative urine culture and antimicrobial sensitivity-test. The association between unstained and stained findings of urinary sediment and urine culture was tested. Sensibility, specificity, and positive/negative predictive values in diagnosing positive urine cultures of bacteria at unstained and stained evaluation were compared. Both wet-mount bacteriuria and the cytological presence of intracellular and extracellular bacteria, neutrophils, and degenerated neutrophils were successively associated with positive urine culture (p < 0.001). The presence of intracellular bacteria was the only independent predictor of positive urine culture. Total bacterial count did not differ significantly between symptomatic and asymptomatic dogs. Detection of extracellular and intracellular bacteriuria at stained urinary sediment significantly improved the sensibility of predicting positive urine culture. Cytologic evaluation of urinary sediment may be helpful in detecting signs of active inflammation, thus enhancing the clinical relevance of a positive urine culture.
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Osathanon R, Lamb CR, Church DB. Associations between respiratory signs, thoracic CT findings and results of tracheobronchoscopy and bronchoalveolar lavage in dogs. Vet Rec 2022; 191:e1385. [PMID: 35092696 DOI: 10.1002/vetr.1385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/20/2021] [Accepted: 01/06/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Several diagnostic techniques are used in dogs with signs of respiratory disease. The aims of the present study are to estimate the relative sensitivities and associations between the results of diagnostic tests in dogs with respiratory conditions. METHOD A retrospective cross-sectional study of dogs referred for investigation of respiratory signs. Associations between clinical signs, thoracic CT findings, tracheobronchoscopic findings, cytology results and bacterial culture results were tested using binary logistic regression. RESULTS One hundred and thirty-three dogs were included. Abnormalities were detected by cytology, tracheobronchoscopy, CT and bacterial culture in 91%, 88%, 80% and 25% cases, respectively. There were associations between cough and bronchial lesions on thoracic CT (odds ratio [OR] 2.6, 95% confidence interval [CI] 1.1-6.4, p = 0.037), and between cough and neutrophilic inflammation on cytology (OR 4.5, 95% CI 1.3-15.8, p = 0.020). Bronchial foreign body at bronchoscopy was associated with pulmonary consolidation on CT (OR 8.0, 95% CI 1.6-41.7, p = 0.013) and with positive bacterial culture (OR 10.9, 95% CI 2.1-57.0, p = 0.005). In dogs with normal thoracic CT, abnormalities were detected by cytology, tracheobronchoscopy and bacterial culture in 89%, 77% and 23% cases, respectively. CONCLUSION Airway cytology and tracheobronchoscopy provided useful information for diagnosis in many dogs with respiratory signs that had a normal thoracic CT.
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Affiliation(s)
- Rungrote Osathanon
- Department of Clinical Science and Services, Royal Veterinary College, Hatfield, Hertfordshire, UK.,Department of Clinical Science and Public Health, Faculty of Veterinary Science, Mahidol University, Salaya, Phutthamonthon, Nakorn Pathom, Thailand
| | - Christopher R Lamb
- Department of Clinical Science and Services, Royal Veterinary College, Hatfield, Hertfordshire, UK
| | - David B Church
- Department of Clinical Science and Services, Royal Veterinary College, Hatfield, Hertfordshire, UK
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Allerton F, Nuttall T. Antimicrobial use: importance of bacterial culture and susceptibility testing. IN PRACTICE 2021. [DOI: 10.1002/inpr.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mavrides DE, Morgan AL, Na JG, Graham PA, McHugh TD. Antimicrobial resistance profiles of bacteria associated with lower respiratory tract infections in cats and dogs in England. Vet Rec 2021; 190:e779. [PMID: 34379795 DOI: 10.1002/vetr.779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 05/14/2021] [Accepted: 07/23/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND Bacterial lower respiratory tract infections (bLRTIs) are common and potentially life threatening in cats and dogs. Antibiotic treatment is often initiated before the diagnosis of bLRTI; therefore improved knowledge of the aetiology and antibiotic susceptibility patterns of these infections is essential to inform empiric antibiotic choices. METHODS A retrospective study of microbiological, cytological results and their drug susceptibilities from lower respiratory samples (n = 1989) processed in a UK commercial laboratory between 2002 and 2012 was carried out. RESULTS Thirty-nine per cent of feline samples and 50% of canine samples were positive for bacterial growth with most yielding a single organism (72 % and 69%, respectively). Bordetella bronchiseptica (20.2% from dogs and 2.3% from cats), Pasteurella spp. (23.2%, 31.8%), E. coli (16.2%, 13.6%) and Pseudomonas spp. (11.1%, 11.4%) were most frequently isolated from cytologically positive samples which contained intracellular bacteria (10%, 14%). Amoxycillin-clavulanate, cephalothin, cefovecin, oxytetracycline and trimethoprim/sulfamethoxazole showed modest in vitro activity against E. coli from dogs (approximately 70% susceptibility). Pseudomonas spp. were resistant to enrofloxacin (50%), ticarcillin (25%) and marbofloxacin (13%) but showed lower or zero resistance to aminoglycosides (approximately 7%) and ciprofloxacin (0%). Multi drug resistance (acquired resistance to three or more antimicrobial drug classes) was particularly common among E. coli isolates, with 23% from feline samples and 43% from canine samples. CONCLUSION Resistance to certain first-choice antibiotics was detected in bLRTIs highlighting the need for continued monitoring and sound evidence to inform decision-making in the management of these infections.
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Affiliation(s)
- Daphne E Mavrides
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Alice L Morgan
- Centre for Clinical Microbiology, University College London, London, UK
| | - Jea G Na
- Centre for Clinical Microbiology, University College London, London, UK
| | - Peter A Graham
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK
| | - Timothy D McHugh
- Centre for Clinical Microbiology, University College London, London, UK
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Graham AM, Tefft KM, Stowe DM, Jacob ME, Robertson JB, Hawkins EC. Factors associated with clinical interpretation of tracheal wash fluid from dogs with respiratory disease: 281 cases (2012-2017). J Vet Intern Med 2021; 35:1073-1079. [PMID: 33544404 PMCID: PMC7995441 DOI: 10.1111/jvim.16052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 01/07/2023] Open
Abstract
Background Clinicians face several dilemmas regarding tracheal washes (TWs) for the diagnosis of respiratory disease, including method and prediction of bacterial growth from cytology results. Objective To compare cytology and culture of endotracheal and transtracheal washes and identify factors associated with discordancy and bacterial growth. Animals Two hundred forty‐five dogs with respiratory disease. Methods Retrospective study. Tracheal wash submissions were included if cellularity was sufficient for cytologic interpretation and aerobic cultures were performed. Collection technique, cytology, bacterial growth, and antibiotic history were analyzed. Results Fewer transtracheal specimens (9/144, 6.3%) were excluded for hypocellularity than endotracheal (28/174, 16.1%); otherwise, results were similar and were combined. Of 281 specimens with cellularity sufficient for interpretation, 97 (34.5%) had bacteria on cytology and 191 (68.0%) had bacterial growth. Cytology positive/culture negative discordancy was uncommon (8/97, 8%). Cytology negative/culture positive discordancy was frequent (102/184, 55.4%), but occurred less often (28/184, 14.2%) when only 1+ growth or greater was considered positive. Oropharyngeal contamination was associated with bacterial growth, but not discordancy. No association was found between antibiotic administration and bacterial growth. Conclusions and Clinical Importance Endotracheal wash fluid, in particular, should be screened for gross mucus or turbidity to maximize the likelihood of an adequate specimen. Otherwise, endotracheal and transtracheal specimens were similar. Presence of bacteria on cytology was a good predictor of any growth, while their absence was a good predictor of the absence of growth of 1+ or more. Recent antibiotic usage should not discourage TW culture if there is compelling reason to avoid delay.
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Affiliation(s)
- Amber M Graham
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Karen M Tefft
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Devorah M Stowe
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Megan E Jacob
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - James B Robertson
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Eleanor C Hawkins
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
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Dear JD, Vernau W, Johnson EG, Hulsebosch SE, Johnson LR. Clinicopathologic and radiographic features in 33 cats with aspiration and 26 cats with bronchopneumonia (2007-2017). J Vet Intern Med 2020; 35:480-489. [PMID: 33315286 PMCID: PMC7848386 DOI: 10.1111/jvim.16005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 12/19/2022] Open
Abstract
Background Aspiration pneumonia (AP) and bronchopneumonia (BP) are poorly characterized diseases in cats that share clinical similarities to inflammatory airway disease (IAD). Objectives Describe clinicopathologic, radiographic, and microbiologic features in cats with AP and BP and compare findings to those in cats with IAD. Animals Thirty‐three cats with AP and 26 with BP; 44 cats with IAD. Methods Retrospective case‐control study. Results extracted for all cats included signalment, physical examination findings, historical details, and potential risk factors for aspiration. Diagnostic test results were summarized including CBC, bronchoalveolar (BAL) fluid analysis and microbial culture. Radiographs were reviewed in masked fashion and scored for severity. Results of BAL fluid analysis were assessed for evidence of septic inflammation. Results Cats with AP were less likely to be presented for evaluation of cough (P < .001) and more likely to be hypothermic (P = .01) than were cats with IAD or BP. Median duration of signs was significantly shorter in cats with AP (12 days) compared to cats with BP or IAD (270 and 180 days; P = .01). Radiographically, cats with AP were more likely to have an alveolar pattern and higher total score than were cats with BP or IAD. Mycoplasma spp. were the organisms most commonly cultured from BAL fluid in cats with BP, but were not cultured from any cats with AP. Conclusion and Clinical Importance Pneumonia must be distinguished from IAD in cats with cough and AP should be considered in cats with acute onset of tachypnea.
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Affiliation(s)
- Jonathan D Dear
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA
| | - William Vernau
- Department of Pathology and Microbiology, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Eric G Johnson
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Sean E Hulsebosch
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Lynelle R Johnson
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA
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Fox C, Daly M, Bellis T. Identification of ventilator‐associated pneumonia in dogs and evaluation of empiric antimicrobial therapy: 13 cases (2012–2016). J Vet Emerg Crit Care (San Antonio) 2020. [DOI: 10.1111/vec.13032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christine Fox
- Emergency and Critical Care Department BluePearl Veterinary Partners New York New York
| | - Meredith Daly
- Emergency and Critical Care Department BluePearl Veterinary Partners New York New York
| | - Tara Bellis
- Emergency and Critical Care Department BluePearl Veterinary Partners New York New York
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Lutz B, Lehner C, Schmitt K, Willi B, Schüpbach G, Mevissen M, Peter R, Müntener C, Naegeli H, Schuller S. Antimicrobial prescriptions and adherence to prudent use guidelines for selected canine diseases in Switzerland in 2016. Vet Rec Open 2020; 7:e000370. [PMID: 32201578 PMCID: PMC7064144 DOI: 10.1136/vetreco-2019-000370] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 01/28/2020] [Accepted: 02/07/2020] [Indexed: 12/28/2022] Open
Abstract
Background Antimicrobial resistance is an increasing problem in human and veterinary medicine and is closely linked to the use of antimicrobials. The objective of this study was to describe antimicrobial prescriptions for selected canine diseases in Switzerland during 2016. Methods Dogs presented to two university hospitals and 14 private practices for acute diarrhoea (AD; n=371), suspected or confirmed urinary tract infections (UTIs; n=245), respiratory tract infections (RTIs; n=274) or wound infections (WIs; n=175) were included. Clinical history, diagnostic work-up and antimicrobial prescription (class, dosage and duration) were retrospectively assessed. A justification score was applied to evaluate appropriateness of antimicrobial therapy based on available national and international consensus guidelines. Results Antimicrobials were prescribed in 65 per cent of dogs with AD, 88 per cent with UTI, 62 per cent with RTI and 90 per cent with WI. The most prescribed antimicrobial classes (monotherapy and combination therapy) were potentiated aminopenicillins (59 per cent), nitroimidazoles (22 per cent), non-potentiated aminopenicillins (16 per cent) and fluoroquinolones (13 per cent). Overall, 38 per cent (95 per cent CI 0.35 to 0.41) of the prescriptions were in accordance with consensus guidelines. In dogs with AD, antimicrobial therapy was associated with the presence of haemorrhagic diarrhoea (P<0.05) and complied in 32 per cent with consensus guidelines, which recommend antimicrobial treatment only when sepsis is suspected. A bacterial aetiology was confirmed via culture and/or sediment examination in 36 per cent of dogs with suspected UTI. Conclusions Overall, adherence to consensus guidelines was poor both, at university hospitals and private practices. Antimicrobial stewardship measures are therefore needed to improve prudent use.
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Affiliation(s)
- Bérénice Lutz
- Department Clinical Veterinary Medicine, Division Small Animal Internal Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
| | - Claudia Lehner
- Department Clinical Veterinary Medicine, Division Small Animal Internal Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
| | - Kira Schmitt
- Clinic for Small Animal Internal Medicine, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
| | - Barbara Willi
- Clinic for Small Animal Internal Medicine, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
| | - Gertraud Schüpbach
- Veterinary Public Health Institute, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Meike Mevissen
- Division of Pharmacology and Toxicology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Ruth Peter
- Institute of Veterinary Pharmacology and Toxicology, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
| | - Cedric Müntener
- Institute of Veterinary Pharmacology and Toxicology, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
| | - Hanspeter Naegeli
- Institute of Veterinary Pharmacology and Toxicology, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
| | - Simone Schuller
- Department Clinical Veterinary Medicine, Division Small Animal Internal Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
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van Leenen K, Van Driessche L, De Cremer L, Masmeijer C, Boyen F, Deprez P, Pardon B. Comparison of bronchoalveolar lavage fluid bacteriology and cytology in calves classified based on combined clinical scoring and lung ultrasonography. Prev Vet Med 2020; 176:104901. [PMID: 32014683 DOI: 10.1016/j.prevetmed.2020.104901] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/20/2019] [Accepted: 01/14/2020] [Indexed: 12/19/2022]
Abstract
Respiratory tract infections are the leading cause of antimicrobial use in calves. Combining clinical examination and lung ultrasonography allows on-farm classification of calves as healthy or suffering from an upper respiratory tract infection (URTI), subclinical or clinical pneumonia. This might help to improve targeted antimicrobial therapy, restricting treatment to pneumonic cases. However, to what extent these diagnostic categories coincide with expected bacteriological and cytological bronchoalveolar lavage fluid (BALf) characteristics is currently unknown. The objective of this study was therefore to compare BALf bacteriology and cytology between healthy calves and calves with URTI, subclinical and clinical pneumonia. The hypothesis was that calves with subclinical and clinical pneumonia would have higher quantitative bacterial counts, bacterial isolation rates and neutrophil counts than URTIs or healthy animals. A cross-sectional study was performed on 305 indoor group-housed dairy and beef calves, from 62 farms. Calves were classified by combining clinical examination and lung ultrasonography. Clinical respiratory disease was defined using the Wisconsin score card and the Healthy Criterion (HC). The HC classified calves as clinically ill if at least one clinical sign was present. Ultrasonographic lung consolidation with a depth of ≥1 cm was considered indicative for pneumonia. Cytology and bacteriology were performed on BALf sampled by non-endoscopic bronchoalveolar lavage. Calves with clinical pneumonia were further subdivided based on culture result and presence of neutrophils phagocytosing bacteria. Combined lung ultrasonography and clinical examination (HC) classified 25.9 % (79/305) of the calves as healthy, 33.1 % (101/305) as URTI, 10.2 % (31/305) as subclinical and 30.8 % (94/305) as clinical pneumonia. Bacterial isolation rates and quantitative BALf culture results did not differ between groups. Calves with clinical pneumonia and neutrophil phagocytosis showed a significantly higher BALf neutrophil percentage compared to healthy calves (59.0 % vs. 37.7 % in healthy calves, P =.03). Inversely, lymphocyte percentage was lower in these calves (1.8 % vs. 5.3 % in healthy calves, P = .003). Classification of calves using lung ultrasonography and clinical scoring did not correspond with BALf bacteriology and cytology findings, as extrapolated from human and companion animal medicine. Under the current housing conditions of this study high rates of non-infectious airway inflammation or airway colonization by opportunistic pathogens, rather than infection might explain this. Isolation of respiratory pathogens from calves with various signs of respiratory disease or ultrasonographic lesions should be interpreted carefully. Of all cytological features, phagocytosis by neutrophils in BALf might be a useful criterion supporting the diagnosis of bacterial respiratory tract infection.
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Affiliation(s)
- Katharina van Leenen
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
| | - Laura Van Driessche
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Lieze De Cremer
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Christien Masmeijer
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Filip Boyen
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Piet Deprez
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Bart Pardon
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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13
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Curran M, Boothe DM, Hathcock TL, Lee-Fowler T. Analysis of the effects of storage temperature and contamination on aerobic bacterial culture results of bronchoalveolar lavage fluid. J Vet Intern Med 2019; 34:160-165. [PMID: 31860163 PMCID: PMC6979085 DOI: 10.1111/jvim.15686] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 12/04/2019] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Storage temperature of bronchoalveolar lavage fluid (BALF) impacts cytological evaluation. The effect of storage temperature before bacterial culture has not been evaluated. OBJECTIVES To assess whether BALF storage temperature alters aerobic bacterial culture results. ANIMALS Eight healthy, male, intact, purpose-bred Beagles. METHODS Prospective, controlled investigation. Samples of BALF were collected sterilely. Half of each sample was reserved for controls, and half was inoculated with 104 colony forming units per milliliter (cfu/mL) Bordetella bronchiseptica and 102 cfu/mL Escherichia coli. Control and inoculated samples each were separated into 4 aliquots (1 plated immediately; 3 stored at 4, 24, or 37°C, respectively, for 24 hours before aerobic bacterial culture). Colony counts were compared across treatments for each organism. RESULTS In inoculated samples, a statistical difference could not be detected in growth of E. coli or B. bronchiseptica between the baseline culture and BALF stored at 4°C for 24 hours before culture. However, for E. coli, growth in cfu/mL at both 24 and 37°C was higher compared to baseline (P < .05) and compared to 4°C (P < .05). For B. bronchiseptica cfu/mL, growth at 37°C was significantly different (P = .003) compared to both baseline and 4°C. CONCLUSIONS AND CLINICAL IMPORTANCE Samples of BALF may be stored at 4°C for 24 hours before culture without substantially altering culture results. Inappropriate storage or shipment temperature (room temperature or exposure to heat) can result in overgrowth of E. coli or B. bronchiseptica, which could alter clinical decisions.
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Affiliation(s)
- Michelle Curran
- Department of Clinical Sciences, Auburn University College of Veterinary Medicine, Auburn, Alabama
| | - Dawn M Boothe
- Department of Anatomy, Physiology, and Pharmacology, Auburn University, Auburn, Alabama
| | | | - Tekla Lee-Fowler
- Department of Clinical Sciences, Auburn University College of Veterinary Medicine, Auburn, Alabama
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14
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Affiliation(s)
- Jonathan D Dear
- Department of Medicine and Epidemiology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA. https://twitter.com/jddear
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15
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Abstract
Chronic bronchitis is a syndrome defined by cough on most days for at least 2 months for which no specific cause can be identified. Older small breed dogs are most commonly affected, but bronchitis can also be documented in midsized and larger breed dogs. Diagnostic testing includes physical examination, laboratory testing, radiography, and airway evaluation via bronchoscopy, cytology, and culture. Treatment is directed at reducing exposure to irritants, reducing airway inflammation, and controlling cough.
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Affiliation(s)
- Elizabeth Rozanski
- Section of Critical Care, Cummings School of Veterinary Medicine, 200 Westboro Road, North Grafton, MA 01536, USA.
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16
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Crisi PE, Johnson LR, Di Cesare A, De Santis F, Di Tommaso M, Morelli S, Pantaleo S, Luciani A, Schaper R, Pampurini F, Boari A. Evaluation of Bronchoscopy and Bronchoalveolar Lavage Findings in Cats With Aelurostrongylus abstrusus in Comparison to Cats With Feline Bronchial Disease. Front Vet Sci 2019; 6:337. [PMID: 31632989 PMCID: PMC6783500 DOI: 10.3389/fvets.2019.00337] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/19/2019] [Indexed: 11/13/2022] Open
Abstract
The cat lungworm Aelurostrongylus abstrusus is a cause of lower respiratory tract disease worldwide. Bronchoscopy and bronchoalveolar lavage (BAL) are important tools for diagnosing respiratory diseases in cats. Therefore, the aim of the study was to investigate the usefulness of bronchoscopy and BAL in the diagnosis of A. abstrusus. Findings from bronchoscopic examination and BAL of 24 naturally infected cats were evaluated and compared with those of 12 cats with idiopathic Feline Bronchial Diseases (FBDs). Data were analyzed using Mann-Whitney or Fisher's exact tests. No significant bronchoscopic differences were detected between cats with aelurostrongylosis and FBDs in bronchial mucus, nodular lesions, and airway collapse. On the other hand, airway hyperemia, epithelial irregularities, and bronchial stenosis were observed more frequently in cats affected by FBDs than aelurostrongylosis, while bronchiectasis was found only in cats infected by A. abstrusus. Neutrophilic, eosinophilic, lymphocytic, and mixed inflammation were recorded in both groups. Bacteria or bacterial DNA was identified regardless of the presence or absence of A. abstrusus with no significant differences between groups. Larvae of A. abstrusus were cytologically detected in 5 of the 24 cats (20.8%) with aelurostrongylosis. These results indicate that, although some findings on bronchoscopic examination (i.e., bronchiectasis) can be described more frequently in cats infected by A. abstrusus, bronchial alterations and cytological findings in aelurostrongylosis are not specific unless larvae are observed and overlap with those of other feline airway diseases.
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Affiliation(s)
- Paolo E Crisi
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
| | - Lynelle R Johnson
- Department of Medicine and Epidemiology, University of California, Davis, Davis, CA, United States
| | - Angela Di Cesare
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
| | - Francesca De Santis
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
| | - Morena Di Tommaso
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
| | - Simone Morelli
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
| | - Stefania Pantaleo
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
| | - Alessia Luciani
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
| | | | | | - Andrea Boari
- Faculty of Veterinary Medicine, University Teaching Veterinary Hospital, University of Teramo, Teramo, Italy
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17
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van Leenen K, Van Driessche L, De Cremer L, Gille L, Masmeijer C, Boyen F, Deprez P, Pardon B. Factors associated with lung cytology as obtained by non-endoscopic broncho-alveolar lavage in group-housed calves. BMC Vet Res 2019; 15:167. [PMID: 31126282 PMCID: PMC6534843 DOI: 10.1186/s12917-019-1921-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 05/16/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Respiratory infections are the main indication for antimicrobial use in calves. As in humans and horses, studying inflammation of the deep airways by lung cytology raises the possibility of preventing respiratory disease and targeting its treatment in the future. Whether lung cytology findings coincide with clinical signs and lung ultrasonographic findings is currently unknown. Therefore, the objective of the present study was to determine the association of lung cytology with clinical signs, lung consolidation and broncho-alveolar lavage fluid (BALf) characteristics (including bacteriology). A total of 352 indoor group-housed calves aged between 1 and 6 months from 62 conveniently selected commercial herds were included in this cross-sectional study. Clinical examination, thoracic ultrasound and bacteriology and cytology on non-endoscopic broncho-alveolar lavage (nBAL) samples were performed. RESULTS Pneumonia, defined as presence of ultrasonographic lung consolidations ≥1 cm in depth, affected 42.4% of the calves. Mean BALf neutrophil percentage was 36.6% (SD 23.8; R 0-97.4) and only a positive induced tracheal cough reflex (P = 0.04), standing posture (P = 0.03) increased breathing rate (P = 0.02) and isolation of Pasteurella multocida (P = 0.005), were associated with increased neutrophil percentage. No significant associations between lung ultrasonographic findings and cytology results were present, except for presence of basophils in BALf and consolidation of > 3 cm in depth (OR = 2.6; CI = 1.2-5.6; P = 0.01). Abnormal lung sounds were associated with detection of eosinophils in BALf (OR = 2.8; CI = 1.0-8.1; P = 0.05). Total nucleated cell count (TNCC) (P < 0.001) was positively and macrophage percentage (P = 0.02) negatively associated with volume of lavage fluid recovered. Macroscopic blood staining of BALf increased TNCC (P = 0.002) and lymphocyte percentage (P = 0.001). CONCLUSIONS Only a limited number of clinical signs and ultrasonographic findings were associated with nBAL cytology. BALf cytology offers additional and distinct information in calves aiding in detection and prevention of respiratory conditions. In this population, selected from herds not reporting any recent respiratory illness, a high number of calves had ultrasonographic lung consolidation and high neutrophil percentage in BALf, suggesting that subclinical disease presentations frequently occur.
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Affiliation(s)
- Katharina van Leenen
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Laura Van Driessche
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Lieze De Cremer
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Linde Gille
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Christien Masmeijer
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Filip Boyen
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Piet Deprez
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Bart Pardon
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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18
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Moyaert H, de Jong A, Simjee S, Rose M, Youala M, El Garch F, Vila T, Klein U, Rzewuska M, Morrissey I. Survey of antimicrobial susceptibility of bacterial pathogens isolated from dogs and cats with respiratory tract infections in Europe: ComPath results. J Appl Microbiol 2019; 127:29-46. [PMID: 30955231 DOI: 10.1111/jam.14274] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/30/2019] [Accepted: 04/03/2019] [Indexed: 12/26/2022]
Abstract
AIMS To present antimicrobial susceptibilities for bacteria from dogs and cats with respiratory tract infection (RTI) across Europe in 2013-2014 and compare with data from 2008-2010. METHODS AND RESULTS Minimal inhibitory concentrations were determined for 464 isolates following Clinical and Laboratory Standards Institute standards using antibiotics approved for RTI treatment. Where possible, susceptibility was calculated using predominantly human-derived breakpoints whilst some antibiotics had no breakpoints. The main pathogen from dogs was Staphylococcus pseudintermedius which was > 90% susceptible to fluoroquinolones and oxacillin (92·5%; six isolates confirmed mecA-positive) and 53·8, 80·0 and 88·8% susceptible to tetracycline, penicillin and trimethoprim/sulfamethoxazole. Streptococci, Escherichia coli, Bordetella bronchiseptica, Staphylococcus aureus and Pseudomonas aeruginosa were also present in dog RTI. Streptococci were fully susceptible to penicillin, ampicillin and pradofloxacin. None were enrofloxacin-resistant but 31·4% had intermediate susceptibility. The least active agent against streptococci was tetracycline (51·4% susceptible). For E. coli, 90·9% were amoxicillin/clavulanic acid-susceptible; susceptibility to other compounds ranged from 63·6 to 81·8%. There are no breakpoints for B. bronchiseptica and Ps. aeruginosa. For Staph. aureus, penicillin susceptibility was low (34·8%); for other compounds 87·0-100%. The main RTI pathogen from cats was Pasteurella multocida, where only pradofloxacin has breakpoints (100% susceptible). Susceptibility of coagulase-negative staphylococci ranged from 66·7% (penicillin) to 97·2% (pradofloxacin). Streptococci from cats were 100% susceptible to all antibiotics except enrofloxacin and tetracycline (both 65·2% susceptible). CONCLUSIONS Overall, antimicrobial resistance was low to medium in RTI in dogs and cats, although susceptibility varied widely among pathogens studied. SIGNIFICANCE AND IMPACT OF THE STUDY Responsible use of antibiotics is crucial to maintain susceptibility and continued resistance monitoring is important to support this goal. These findings support the need for the setting of RTI-specific breakpoints for pathogens of dogs and cats.
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Affiliation(s)
- H Moyaert
- CEESA ComPath Study Group, Brussels, Belgium
| | - A de Jong
- CEESA ComPath Study Group, Brussels, Belgium
| | - S Simjee
- CEESA ComPath Study Group, Brussels, Belgium
| | - M Rose
- CEESA ComPath Study Group, Brussels, Belgium
| | - M Youala
- CEESA ComPath Study Group, Brussels, Belgium
| | - F El Garch
- CEESA ComPath Study Group, Brussels, Belgium
| | - T Vila
- CEESA ComPath Study Group, Brussels, Belgium
| | - U Klein
- CEESA ComPath Study Group, Brussels, Belgium
| | - M Rzewuska
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
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19
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Canonne AM, Billen F, Tual C, Ramery E, Roels E, Peters I, Clercx C. Quantitative PCR and Cytology of Bronchoalveolar Lavage Fluid in Dogs with Bordetella bronchiseptica Infection. J Vet Intern Med 2017; 30:1204-9. [PMID: 27461723 PMCID: PMC5108481 DOI: 10.1111/jvim.14366] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 04/19/2016] [Accepted: 05/25/2016] [Indexed: 01/09/2023] Open
Abstract
Background The use of quantitative PCR (qPCR) for detection of Bordetella bronchiseptica in bronchoalveolar lavage fluid (BALF) and demonstration of bacteria adhering to ciliated epithelial cells in BALF or bronchial brushing fluid (BBF) has not been assessed in a series of affected dogs. Coinfections can worsen the clinical severity in bordetellosis, but the specific association with Mycoplasma cynos has not been evaluated. Objectives To assess the utility of culture, qPCR and cytologic examination of cytospin preparations in the diagnosis of bordetellosis in dogs and the influence of coinfection by M. cynos on disease severity. Animals Twenty‐four referred dogs with B. bronchiseptica infection and 10 healthy dogs. Methods Retrospective case series. qPCR (B. bronchiseptica and M. cynos) and culture results from BALF were recorded. Cytospin preparations from BALF and BBF were reviewed. qPCR on BALF from 10 healthy dogs were used as negative control. Results The BALF culture and qPCR detected B. bronchiseptica in 14/24 and 18/18 dogs, respectively. Coccobacilli were found adhering to ciliated epithelial cells in 20 of the 21 BALF cytologic preparations where epithelial cells were found, and 2/3 BBF cytologic preparations. Quantitative PCR detected a low level of B. bronchiseptica in one healthy dog. The frequency of detection of M. cynos was not significantly different in B. bronchiseptica (9/17 dogs) compared with healthy dogs (2/10 dogs) (P = .09). Conclusion and Clinical Importance Quantitative PCR detection of B. bronchiseptica in BALF appears to be a useful diagnostic tool. Cytologic examination of BALF or BBF, when positive, allows a rapid and reliable diagnosis.
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Affiliation(s)
- A M Canonne
- Faculty of Veterinary Medicine, Department of Small Animal Clinical Sciences, Internal Medicine, University of Liège, Liège, Belgium
| | - F Billen
- Faculty of Veterinary Medicine, Department of Small Animal Clinical Sciences, Internal Medicine, University of Liège, Liège, Belgium
| | - C Tual
- Faculty of Veterinary Medicine, Department of Small Animal Clinical Sciences, Internal Medicine, University of Liège, Liège, Belgium
| | - E Ramery
- Faculty of Veterinary Medicine, Department of Small Animal Clinical Sciences, Internal Medicine, University of Liège, Liège, Belgium
| | - E Roels
- Faculty of Veterinary Medicine, Department of Small Animal Clinical Sciences, Internal Medicine, University of Liège, Liège, Belgium
| | - I Peters
- TDDS Ltd., Unit G, The Innovation Centre, University of Exeter, Exeter, UK
| | - C Clercx
- Faculty of Veterinary Medicine, Department of Small Animal Clinical Sciences, Internal Medicine, University of Liège, Liège, Belgium
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20
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Lappin M, Blondeau J, Boothe D, Breitschwerdt E, Guardabassi L, Lloyd D, Papich M, Rankin S, Sykes J, Turnidge J, Weese J. Antimicrobial use Guidelines for Treatment of Respiratory Tract Disease in Dogs and Cats: Antimicrobial Guidelines Working Group of the International Society for Companion Animal Infectious Diseases. J Vet Intern Med 2017; 31:279-294. [PMID: 28185306 PMCID: PMC5354050 DOI: 10.1111/jvim.14627] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 09/05/2016] [Accepted: 11/07/2016] [Indexed: 12/21/2022] Open
Abstract
Respiratory tract disease can be associated with primary or secondary bacterial infections in dogs and cats and is a common reason for use and potential misuse, improper use, and overuse of antimicrobials. There is a lack of comprehensive treatment guidelines such as those that are available for human medicine. Accordingly, the International Society for Companion Animal Infectious Diseases convened a Working Group of clinical microbiologists, pharmacologists, and internists to share experiences, examine scientific data, review clinical trials, and develop these guidelines to assist veterinarians in making antimicrobial treatment choices for use in the management of bacterial respiratory diseases in dogs and cats.
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Affiliation(s)
- M.R. Lappin
- Colorado State UniversityFort CollinsCODenmark
| | | | | | | | | | | | - M.G. Papich
- North Carolina State UniversityRaleighNCDenmark
| | - S.C. Rankin
- University of PennsylvaniaPhiladelphiaPAAustralia
| | - J.E. Sykes
- University of CaliforniaDavisCAAustralia
| | - J. Turnidge
- The Women's and Children HospitalAdelaideSA,Australia
| | - J.S. Weese
- Ontario Veterinary CollegeGuelphONAustralia
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21
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Martin-Flores M, Cortright CC, Koba SJ. Removal of an Airway Foreign Body via Flexible Endoscopy Through a Laryngeal Mask Airway. J Am Anim Hosp Assoc 2016; 51:325-8. [PMID: 26355584 DOI: 10.5326/jaaha-ms-6208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A Silky terrier weighing 4.7 kg was presented with an airway foreign body after having aspirated a fragment of an orotracheal tube that was identified on radiological examination. Due to the small size of the patient, flexible endoscopy could not be performed through the lumen of a tracheal tube. Following IV induction of general anesthesia, the airway was instrumented with a laryngeal mask airway that was attached via a three-way connector to an anesthesia breathing circuit. A flexible endoscope was passed through the free port of the connector. That arrangement allowed for the passage of an endoscope through the lumen of the laryngeal mask airway and into the trachea without interrupting the continuous supply of O2 and sevoflurane.
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Affiliation(s)
- Manuel Martin-Flores
- From the Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY
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22
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Johnson LR, Johnson EG, Vernau W, Kass PH, Byrne BA. Bronchoscopy, Imaging, and Concurrent Diseases in Dogs with Bronchiectasis: (2003-2014). J Vet Intern Med 2015; 30:247-54. [PMID: 26682874 PMCID: PMC4913641 DOI: 10.1111/jvim.13809] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 10/18/2015] [Accepted: 11/11/2015] [Indexed: 12/16/2022] Open
Abstract
Background Bronchiectasis is a permanent and debilitating sequel to chronic or severe airway injury, however, diseases associated with this condition are poorly defined. Objective To evaluate results of diagnostic tests used to document bronchiectasis and to characterize underlying or concurrent disease processes. Animals Eighty‐six dogs that had bronchoscopy performed and a diagnosis of bronchiectasis. Methods Retrospective case series. Radiographs, computed tomography, and bronchoscopic findings were evaluated for features of bronchiectasis. Clinical diagnoses of pneumonia (aspiration, interstitial, foreign body, other), eosinophilic bronchopneumopathy (EBP), and inflammatory airway disease (IAD) were made based on results of history, physical examination, and diagnostic testing, including bronchoalveolar lavage fluid analysis and microbiology. Results Bronchiectasis was diagnosed in 14% of dogs (86/621) that had bronchoscopy performed. Dogs ranged in age from 0.5 to 14 years with duration of signs from 3 days to 10 years. Bronchiectasis was documented during bronchoscopy in 79/86 dogs (92%), thoracic radiology in 50/83 dogs (60%), and CT in 34/34 dogs (100%). Concurrent airway collapse was detected during bronchoscopy in 50/86 dogs (58%), and focal or multifocal mucus plugging of segmental or subsegmental bronchi was found in 41/86 dogs (48%). Final diagnoses included pneumonia (45/86 dogs, 52%), EBP (10/86 dogs, 12%) and IAD (31/86 dogs, 36%). Bacteria were isolated in 24/86 cases (28%), with Streptococcus spp, Pasteurella spp, enteric organisms, and Stenotrophomonas isolated most frequently. Conclusions and Clinical Importance Bronchiectasis can be anticipated in dogs with infectious or inflammatory respiratory disease. Advanced imaging and bronchoscopy are useful in making the diagnosis and identifying concurrent respiratory disease.
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Affiliation(s)
- L R Johnson
- Department of Medicine and Epidemiology, University of California, Davis, Davis, CA
| | - E G Johnson
- Department of Surgical and Radiological Science, University of California, Davis, Davis, CA
| | - W Vernau
- Department of Pathology, Microbiology, and Immunology, University of California, Davis, Davis, CA
| | - P H Kass
- Department of Population Health and Reproduction, University of California, Davis, Davis, CA
| | - B A Byrne
- Department of Pathology, Microbiology, and Immunology, University of California, Davis, Davis, CA
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23
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Rheinwald M, Hartmann K, Hähner M, Wolf G, Straubinger RK, Schulz B. Antibiotic susceptibility of bacterial isolates from 502 dogs with respiratory signs. Vet Rec 2014; 176:357. [PMID: 25467146 DOI: 10.1136/vr.102694] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2014] [Indexed: 11/04/2022]
Abstract
The aim of this study was to investigate the prevalence of bacterial species isolated from bronchoalveolar lavage fluid (BALF) samples taken from dogs with respiratory signs and to determine their antibiotic susceptibility. Clinical cases were included in the study if they showed signs of respiratory disease and data relating to bacterial culture and susceptibility of BALF samples were available. The medical records of 493 privately owned dogs that were presented between January 1989 and December 2011 were evaluated retrospectively. In 35 per cent of samples, no bacteria were cultured. Bacteria isolated from culture-positive samples included Streptococcus species (31 per cent of positive cultures), Enterobacteriaceae (30 per cent, including Escherichia coli (15 per cent)), Staphylococcus species (19 per cent), Pasteurella species (16 per cent) and Pseudomonas species (14 per cent). Bordetella bronchiseptica as a primary respiratory pathogen was isolated in 8 per cent of cases. Enrofloxacin showed the best susceptibility pattern; 86 per cent of all isolates and 87 per cent of Gram-negative bacteria were susceptible to this antibiotic. Amoxicillin/clavulanic acid yielded the best susceptibility pattern in Gram-positive bacteria (92 per cent). Therefore, these antibiotics can be recommended for empirical or first-line treatment in dogs with bacterial lower respiratory tract infections.
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Affiliation(s)
- M Rheinwald
- Clinic of Small Animal Medicine, Ludwig Maximilian University of Munich, Veterinaerstrasse. 13, Muenchen 80539, Germany
| | - K Hartmann
- Clinic of Small Animal Medicine, Ludwig Maximilian University of Munich, Veterinaerstrasse. 13, Muenchen 80539, Germany
| | - M Hähner
- Clinic of Small Animal Medicine, Ludwig Maximilian University of Munich, Veterinaerstrasse. 13, Muenchen 80539, Germany
| | - G Wolf
- Institute for Infectious Diseases and Zoonoses, Ludwig Maximilian University of Munich, Veterinaerstrasse. 13, Muenchen 80539, Germany
| | - R K Straubinger
- Institute for Infectious Diseases and Zoonoses, Ludwig Maximilian University of Munich, Veterinaerstrasse. 13, Muenchen 80539, Germany
| | - B Schulz
- Clinic of Small Animal Medicine, Ludwig Maximilian University of Munich, Veterinaerstrasse. 13, Muenchen 80539, Germany
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24
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Woods KS, Defarges AMN, Abrams-Ogg ACG, Viel L, Brisson BA, Bienzle D. Comparison of manual and suction pump aspiration techniques for performing bronchoalveolar lavage in 18 dogs with respiratory tract disease. J Vet Intern Med 2014; 28:1398-404. [PMID: 25056240 PMCID: PMC4895568 DOI: 10.1111/jvim.12403] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 04/11/2014] [Accepted: 05/29/2014] [Indexed: 11/26/2022] Open
Abstract
Background Different aspiration techniques to retrieve bronchoalveolar lavage fluid (BALF) affect sample quality in healthy dogs. Studies evaluating these techniques in dogs with respiratory disease are lacking. Objectives To compare sample quality of BALF acquired by manual aspiration (MA) and suction pump aspiration (SPA). Animals Eighteen client‐owned dogs with respiratory disease. Methods Randomized, blinded prospective clinical trial. Manual aspiration was performed with a 35‐mL syringe attached directly to the bronchoscope biopsy channel and SPA was performed with a maximum of 50 mmHg negative pressure applied to the bronchoscope suction valve using the suction trap connection. Both aspiration techniques were performed in each dog on contralateral lung lobes, utilizing 2 mL/kg lavage volumes per site. Samples of BALF were analyzed by percentage of retrieved infusate, total nucleated cell count (TNCC), differential cell count, semiquantitative assessment of slide quality, and diagnosis score. Data were compared by paired Student's t‐test, Wilcoxon signed‐rank test, chi‐squared test, and ANOVA. Cohen's kappa coefficient was used to assess agreement. Results The percentage of retrieved BALF (P = .001) was significantly higher for SPA than MA. Substantial agreement was found between cytologic classification of BALF obtained with MA and SPA (kappa = 0.615). There was no significant difference in rate of definitive diagnosis achieved with cytologic assessment between techniques (P = .78). Conclusions and Clinical Importance Suction pump aspiration, compared to MA, improved BALF retrieval, but did not significantly affect the rate of diagnostic success of bronchoalveolar lavage (BAL) in dogs with pulmonary disease.
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Affiliation(s)
- K S Woods
- Ontario Veterinary College, University of Guelph, Guelph, ON; Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK
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25
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Abstract
Chronic bronchitis is a syndrome defined by cough on most days for at least 2 months where no specific cause can be identified. Older small breed dogs are most commonly affected, but bronchitis is also documented in midsized and larger breed dogs. Diagnostic testing includes physical examination, laboratory testing, radiography, and airway evaluation via bronchoscopy, cytology, and culture. Treatment is directed at reducing exposure to irritants, reducing airway inflammation, and controlling cough.
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Affiliation(s)
- Elizabeth Rozanski
- Section of Critical Care, Tufts Cummings School of Veterinary Medicine, 200 Westboro Road, North Grafton, MA 01536, USA.
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26
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Affiliation(s)
- Jonathan D Dear
- William R. Pritchard Veterinary Medical Teaching Hospital, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA.
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