The Association of Fibrinous Pleural Effusion with Survival and Complications in Horses with Pleuropneumonia (2002-2012): 74 Cases.
- Journal Article
Summary
This study demonstrates a link between fibrinous pleural effusion and decreased survival rates and complications in horses. The researchers used data and methods such as sonography and logistic regression on a sample of 74 horses with bacterial pleuropneumonia over a decade, from 2002 to 2012.
Study Objective and Hypothesis
The core objective of the research was to understand if fibrin buildup in the pleural cavity of horses suffering from parapneumonic effusions increases the risk of a poor outcome. It was motivated by similar findings in humans where fibrinous pleural effusions decreased the effectiveness of pleural fluid drainage and heightened the risk of medical treatment failure.
Methods
- A sample size of 74 horses diagnosed with bacterial pleuropneumonia were included in the study. These horses were diagnosed through cytology of tracheal aspirates, pleural fluid, or both. The diagnosis was confirmed via a sonographic examination of the pleural effusion.
- The study was retrospective, covering cases from 2002 to 2012. The data, including information on the horses’ signalment, history, sonographic findings, treatments, and outcome was extracted from medical records.
- The primary outcome investigated was survival, with secondary outcomes being the development of complications and the requirement for surgical intervention.
- Statistical methods utilized to analyze the data included Fisher’s exact test and logistic regression for categorical variables and t-tests for continuous variables.
Results
- Of the 74 horses that met the study criteria, 50, which is 68%, survived.
- Fibrinous pleural effusion was associated with higher respiratory rate, higher pleural fluid height at admission, necrotizing pneumonia, and an increased number of indwelling thoracic drains required for treatment.
- Key finding: Presence of fibrinous pleural effusion corresponded to decreased survival.
Conclusions
The study concluded that fibrin accumulation in parapneumonic effusions is indeed correlated with increased mortality rates in horses. Consequently, the researchers suggested that horses diagnosed with this condition could potentially benefit from direct fibrinolytic treatment to improve their chances of survival.
Cite This Article
Publication
Researcher Affiliations
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA.
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA.
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA.
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA.
MeSH Terms
- Animals
- Anti-Bacterial Agents / therapeutic use
- Female
- Horse Diseases / drug therapy
- Horse Diseases / mortality
- Horse Diseases / pathology
- Horses
- Male
- Pleural Effusion / complications
- Pleural Effusion / mortality
- Pleural Effusion / pathology
- Pleural Effusion / veterinary
- Pleuropneumonia, Contagious / drug therapy
- Pleuropneumonia, Contagious / mortality
- Pleuropneumonia, Contagious / pathology
- Retrospective Studies
- Risk Factors
- Survival Analysis
References
- Smith BP, Clarence J. Marshall Memorial Library Fund, Rosengarten Family Fund In: Smith Bradford P., ed. Large Animal Internal Medicine, 4th ed St. Louis, MO: Mosby Elsevier; 2009:1821.
- Racklyeft DJ, Love DN. Bacterial infection of the lower respiratory tract in 34 horses.. Aust Vet J 2000 Aug;78(8):549-59.
- Raphel CF, Beech J. Pleuritis secondary to pneumonia or lung abscessation in 90 horses.. J Am Vet Med Assoc 1982 Oct 15;181(8):808-10.
- Sweeney CR, Holcombe SJ, Barningham SC, Beech J. Aerobic and anaerobic bacterial isolates from horses with pneumonia or pleuropneumonia and antimicrobial susceptibility patterns of the aerobes.. J Am Vet Med Assoc 1991 Mar 1;198(5):839-42.
- Vachon AM, Fischer AT. Thoracoscopy in the horse: diagnostic and therapeutic indications in 28 cases.. Equine Vet J 1998 Nov;30(6):467-75.
- Seltzer KL, Byars TD. Prognosis for return to racing after recovery from infectious pleuropneumonia in thoroughbred racehorses: 70 cases (1984-1989).. J Am Vet Med Assoc 1996 Apr 15;208(8):1300-1.
- Sweeney CR, Divers TJ, Benson CE. Anaerobic bacteria in 21 horses with pleuropneumonia.. J Am Vet Med Assoc 1985 Oct 1;187(7):721-4.
- Carlson GP, O'Brien MA. Anaerobic bacterial pneumonia with septicemia in two racehorses.. J Am Vet Med Assoc 1990 Mar 15;196(6):941-3.
- Himelman RB, Callen PW. The prognostic value of loculations in parapneumonic pleural effusions.. Chest 1986 Dec;90(6):852-6.
- Raidal SL. Equine pleuropneumonia.. Br Vet J 1995 May-Jun;151(3):233-62.
- Chaffin MK, Carter GK, Byars TD. Equine bacterial pleuropneumonia. part III. treatment, sequelae, and prognosis.. Compend Contin Educ Vet 1994;16:1585–1594.
- Burbidge HM. Penetrating thoracic wound in a Hackney mare.. Equine Vet J 1982 Jan;14(1):94-5.
- Hilton H, Pusterla N. Intrapleural fibrinolytic therapy in the management of septic pleuropneumonia in a horse.. Vet Rec 2009 May 2;164(18):558-9.
- Rendle DI, Armstrong SK, Hughes KJ. Combination fibrinolytic therapy in the treatment of chronic septic pleuropneumonia in a Thoroughbred gelding.. Aust Vet J 2012 Sep;90(9):358-62.
- Reef VB. Thoracic ultrasonography In: Reef Virginia B., ed. Equine Diagnostic Ultrasound. Philadelphia, PA: W.B. Saunders; 1998:187–208.
- Mansmann RA. Panel: Pleuropneumonia.. AAEP Proc 1983;29:59–63.
- Reimer JM, Reef VB, Spencer PA. Ultrasonography as a diagnostic aid in horses with anaerobic bacterial pleuropneumonia and/or pulmonary abscessation: 27 cases (1984-1986).. J Am Vet Med Assoc 1989 Jan 15;194(2):278-82.
- Abu-Daff S, Maziak DE, Alshehab D, Threader J, Ivanovic J, Deslaurier V, Villeneuve PJ, Gilbert S, Sundaresan S, Shamji F, Lougheed C, Seely JM, Seely AJ. Intrapleural fibrinolytic therapy (IPFT) in loculated pleural effusions--analysis of predictors for failure of therapy and bleeding: a cohort study.. BMJ Open 2013;3(2).
- Chung CL, Chen YC, Chang SC. Effect of repeated thoracenteses on fluid characteristics, cytokines, and fibrinolytic activity in malignant pleural effusion.. Chest 2003 Apr;123(4):1188-95.
- Mair TS, Yeo SP. Equine pleuropneumonia: the importance of anaerobic bacteria and the potential value of metronidazole in treatment.. Vet Rec 1987 Aug 1;121(5):109-10.
- Reef VB. Outcome and return to performance in horses with pleuropneumonia evaluated ultrasonographically.. ACVIM Proc 1990;573–575.
Citations
This article has been cited 2 times.- Arroyo MG, Slovis NM, Moore GE, Taylor SD. Factors Associated with Survival in 97 Horses with Septic Pleuropneumonia.. J Vet Intern Med 2017 May;31(3):894-900.
- Tomlinson JE, Byrne E, Pusterla N, Magdesian KG, Hilton HG, McGorum B, Davis E, Schoster A, Arroyo L, Dunkel B, Carslake H, Boston RC, Johnson AL. The Use of Recombinant Tissue Plasminogen Activator (rTPA) in The Treatment of Fibrinous Pleuropneumonia in Horses: 25 Cases (2007-2012).. J Vet Intern Med 2015 Sep-Oct;29(5):1403-9.