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Tierarztl Prax Ausg K Kleintiere Heimtiere 2012; 40(04): 261-266
DOI: 10.1055/s-0038-1623648
Original Article
Schattauer GmbH

Ventricular fractional shortening in 108 dogs with malignant lymphoma undergoing chemotherapy with a cyclic combination protocol including doxorubicin

Linksventrikuläre Verkürzungsfraktion bei 108 Hunden mit malignem Lymphom unter zyklischer Kombinationschemotherapie mit Doxorubicin
G. Tater
1   Small Animal Hospital, University of Veterinary Medicine, Hannover, Germany
,
N. Eberle
1   Small Animal Hospital, University of Veterinary Medicine, Hannover, Germany
,
S. Hungerbuehler
1   Small Animal Hospital, University of Veterinary Medicine, Hannover, Germany
,
A. Joetzke
1   Small Animal Hospital, University of Veterinary Medicine, Hannover, Germany
,
I. Nolte
1   Small Animal Hospital, University of Veterinary Medicine, Hannover, Germany
,
G. Wess
2   Clinic of Small Animal Internal Medicine, Ludwig-Maximilian-University, Munich, Germany
,
D. Betz
1   Small Animal Hospital, University of Veterinary Medicine, Hannover, Germany
› Author Affiliations
Further Information

Publication History

Received: 23 December 2011

Accepted after revision: 10 April 2012

Publication Date:
06 January 2018 (online)

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Summary

Objective: The aim of this study was to evaluate whether changes in the left ventricular fractional shortening (LVFS) can be detected in dogs with malignant lymphoma undergoing a cyclic combination chemotherapy protocol including doxorubicin.

Hypothesis: Left ventricular fractional shortening as a stand-alone measurement will not show a significant change during the cyclic combination protocol.

Material and methods: In this retrospective study, the records of dogs with malignant lymphoma treated between April 2001 and October 2010 were reviewed. Inclusion criteria comprised: a diagnosis of malignant lymphoma, a cyclic combination chemotherapy (including L-asparaginase, vincristine, cyclophosphamide, doxorubicin and prednisolone), and an echocardiographic examination by an experienced examiner before treatment and after each doxorubicin administration.

Results: One hundred and eight dogs were included and a total of 446 LVFS measurements had been performed. Patients were divided into four groups according to the number of doxorubicin administrations. Median LVFS did not change significantly during the cyclic combination protocol in all groups. All median LVFS values remained above the lower reference value of 25%.

Conclusion and clinical relevance: The measurement of LVFS did not show a significant change during the cyclic combination protocol treatment including doxorubicin in this population of dogs. Therefore either this cyclic combination protocol does not cause a systolic dysfunction or LVFS is not sensitive enough to detect early changes. Newer methods that are more sensitive then LVFS might be necessary to detect such changes.

Zusammenfassung

Gegenstand und Ziel: dieser Studie war die echokardiographische Evaluierung potenzieller Veränderungen der linksventrikulären Verkürzungsfraktion (Left Ventricular Fractional Shortening, LVFS) bei Hunden mit malignem Lymphom unter zyklischer Kombinationschemotherapie mit Doxorubicin.

Hypothese: Die LVFS als alleiniger Parameter kann keine signifikanten Änderungen im Protokollverlauf darstellen

Material und Methoden: Diese retrospektive Studie umfasst die Daten der Hunde, die zwischen April 2001 und Oktober 2010 wegen eines malignen Lymphoms behandelt wurden. Einschlusskriterien waren zum einen die Diagnose eines malignen Lymphoms, eine zyklische Kombinationschemotherapie (L-Asparaginase, Vincristin, Cyclophosphamid, Doxorubicin und Prednisolon), und zum anderen eine echokardiographische Evaluierung vor und nach jeder Doxorubicinapplikation.

Ergebnisse: 108 Hunde gingen in die Studie ein. Insgesamt waren 446 LVFSMessungen durchgeführt worden. Entsprechend der Anzahl der Doxorubicingaben erfolgte eine Einteilung der Hunde in vier Gruppen. Die mediane LVFS zeigte während des zyklischen Behandlungsprotokolls in allen Gruppen keine signifikanten Unterschiede. Alle erhobenen medianen Werte lagen über dem unteren beschriebenen Referenzbereich von 25%.

Schlussfolgerung und klinische Relevanz: Die Messung der Verkürzungsfraktion ließ während der gesamten Behandlungsdauer keinen signifikanten Unterschied erkennen. Dies kann durch die mangelnde Sensitivität der Methode bedingt sein oder dadurch, dass die zyklische Kombinationschemotherapie keine systolische Dysfunktion verursacht. Neuere Messmodalitäten mit höherer Sensitivität könnten hier genaueren Aufschluss bieten.

Key words

Fractional shortening - doxorubicin - malignant lymphoma - dog

Schlüsselwörter

Linksventrikuläre Verkürzungsfraktion - Doxorubicin - malignes Lymphom - Hund
 

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