The Effect of Round Heart Disease on the Electrocardiogram and Heart Weight of Turkey Poults

Hunsaker, W. G.; Robertson, Amy; Magwood, S. E.

doi:10.3382/ps.0501712

Cited by 31 publications

(10 citation statements)

References 6 publications

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“…The average value of the electrical axis was Ϫ99.2 Ϯ 7.7Њ (Ϫ70.9 to Ϫ111.4Њ). Marked change to positive values (0 to ϩ120Њ) was described as a pathognomonic sign for dilated cardiomyopathy in parrots (Miller, 1986), chickens and turkeys (Hunsaker et al, 1971).…”

Section: Discussionmentioning

confidence: 99%

Electrocardiogram Reference Values for the Buzzard in Spain

Espino

Suárez

López-Beceiro

et al. 2001

Journal of Wildlife Diseases

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Electrocardiographic reference values were established on apparently healthy buzzards (Buteo buteo) in Lugo (Spain) from March 1997 to June 1999. All birds were anesthetized with isofluorane and placed in dorsal recumbence. The standard and augmented unipolar limb leads electrocardiograms were recorded in 65 buzzards. The wave forms were analyzed in lead II at 50 mm/sec and at 1 cm ϭ 1 mV to determine P, PR, QRS, T and QT durations and P, QRS and T amplitudes. The polarity of each wave form was tabulated in all leads. The mean electrical axis (MEA) for the frontal plane was calculated using leads II and III. The mean heart rate was 325.2 Ϯ 52.9 beats/min. In lead II, the P wave was positive, the dominant pattern of QRS complex was QS and the T wave was always positive. The average value of the MEA was Ϫ99.2 Ϯ 7.7Њ. Establishment of normal electrocardiogram (EKG) values will facilitate a better understanding of EKG changes seen in many diseases of these birds.

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Section: Discussionmentioning

confidence: 99%

Electrocardiogram Reference Values for the Buzzard in Spain

Espino

Suárez

López-Beceiro

et al. 2001

Journal of Wildlife Diseases

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“…Electrocardiography is a useful diagnostic tool in birds (Hunsaker et al, 1971;Lumeij, 1986;Miller, 1986;Sturkie, 1986). We must realize, however, that severe cardiac histopathology is not always reflected in ECG abnormalities, and that severe ECG abnormalities have been reported in individuals with a normal cardiac histopathology (Miller, 1985).…”

Section: Discussionmentioning

confidence: 99%

“…Electrocardiography has proved to be a useful diagnostic technique in avian cardiology (Hunsaker et al, 1971;Sturkie, 1986;Lumeij, 1986). Although cardiac diseases do occur in parrots, electrocardiography is not generally applied.…”

Section: Introductionmentioning

confidence: 99%

Electrocardiogram of the African grey (psittacus erithacus) and Amazon (Amazonaspp.) parrot

1992

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SUMMARYElectrocardiographic reference values and configurations were established in apparently healthy African grey (Psittacus erithacus; n=45) and Amazon (Amazona spp.; n = 37) parrots, using standard limb leads. In 31 of the African grey parrots and 32 of the Amazon parrots electrocardiograms were made during isoflurane-anaesthesia. Significant differences between anaesthetized and unanaesthetized birds were found only for the median heart rate and QTinterval (P<0.05). Significant differences between the two genera were found for the duration of the P-and T-waves, the voltage of the T-wave and for the mean electrical axis.Sinus arrhythmias and ventricular premature beats were present in 5 to 10% of the tracings.

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“…The pathogenesis of round heart disease in young turkey poults is also characterized by severe enlargement of the heart and, in many cases, ascites (3,7,8,16). In contrast to ascites syndrome in broiler chickens, round heart disease in turkeys is characterized by primary hypertrophy of the myocardium and dilation of the left ventricular lumen with subsequent involvement of the right ventricle (4).…”

mentioning

confidence: 99%

Use of Electrocardiographic Analysis for Investigation of Ascites Syndrome in Broiler Chickens

Odom

Hargis²,

López³

et al. 1991

Avian Diseases

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This study was conducted (at high altitude [1969 meters]) to determine whether chicks predisposed to cardiac failure and ascites could be identified and followed during growout with non-invasive electrocardiographic (ECG) techniques. ECG recordings were made on 40 chicks at 1 week of age. All recordings were analyzed by quantifying the amplitude in millivolts of the R-, S-, and T-waves in each of the recordings. During the study, ascites-related mortality was 40%, with the majority of the deaths occurring between 5 and 8 weeks of age. Chicks exhibiting moderate-to-severe right ventricular hypertrophy, as identified by ECG analysis at 1 week of age, were predisposed to development of ascites. Thus, the variability in ascites-related mortality observed in field cases may be directly related to the number of predisposed chicks at the time of placement in the broiler house.

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The Effect of Round Heart Disease on the Electrocardiogram and Heart Weight of Turkey Poults

Cited by 31 publications

References 6 publications

Electrocardiogram Reference Values for the Buzzard in Spain

Electrocardiogram Reference Values for the Buzzard in Spain

Electrocardiogram of the African grey (psittacus erithacus) and Amazon (Amazonaspp.) parrot

Use of Electrocardiographic Analysis for Investigation of Ascites Syndrome in Broiler Chickens

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