Resuscitation and Critical Care of Neonatal Calves

Nagy, Dusty W.

doi:10.1016/j.cvfa.2008.10.008

Cited by 24 publications

(36 citation statements)

References 25 publications

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“…It shows that sex, age, species and breed had no effect on ST-segment in sheep and goats. In humans, elevation of the ST-segment from baseline, can indicate right or left bundle branch block, left ventricular hypertrophy, acute myocardial infarction, myocardial contusion, pericarditis, left ventricular aneurysm, acute myocarditis, right ventricular infarction, dissecting aortic aneurysm, acute pulmonary embolism, various central and autonomic nervous system abnormalities, thiamine deficiency, hypercalcaemia, hyperthyroidism, hyperkalaemia and compression of right ventricular outflow tract by metastatic tumor (Gertsch, 2009;Häggmark et al, 2005;Machler et al, 1998;Nagy, 2009;Nishi et al, 2006;Wang et al, 2003). In some healthy young adult humans, a form of ST-segment elevation can be normal (Wang et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Electrocardiographic Analysis of ST-Segment Duration and Morphology in Sheep and Goats: Effect of Species, Breed, Age and Sex

Samimi¹,

Tajik²,

Aghamiri³

et al. 2016

İstanbul Üniversitesi Veteriner Fakültesi Dergisi

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The importance of obtaining normal values of ST-segment for specific breeds of animals besides the high variability of indices in small ruminant has been emphasized. The animals were assigned into 4 groups (G1-4), according to their age: G1<3 months, 3 months ≤G2< 1 year, 1 year≤G3<3 years, and G4 ≥ 3 years old. There were 34 animals in each study group. The animals were assigned to two comprising groups: sheep, goat, male and female. Also, the animals were divided into three groups according to their breed, including: Kermani sheep, Saanen and Cashmere (Raini) goats. The present study showed that sex, age and breed had no effect on ST-segment in sheep and goats and the obtained data can provide a good basis for judging the ST-segment length and morphology in difference sexes, breeds and age groups of sheep and goats.

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Section: Discussionmentioning

confidence: 99%

Electrocardiographic Analysis of ST-Segment Duration and Morphology in Sheep and Goats: Effect of Species, Breed, Age and Sex

Samimi¹,

Tajik²,

Aghamiri³

et al. 2016

İstanbul Üniversitesi Veteriner Fakültesi Dergisi

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“…The practice of suspending newborn calves by their hind legs was historically suggested as a method to drain fluid from the calf's lungs to help establish breathing and remains prevalent today. Current evidence has concluded that most of this fluid comes from the stomach and that pressure from the internal organs on the diaphragm actually makes it more difficult for the calf to expand its lungs and breathe (Nagy, 2009). However, there was no association between this practice and the herd-level outcomes of morbidity and mortality in this study.…”

Section: Calving Seasonmentioning

confidence: 99%

Calf management practices and associations with herd-level morbidity and mortality on beef cow-calf operations

Murray

Fick

Pajor

et al. 2016

Animal

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The objective of this study was to investigate calf management practices on beef cow-calf operations and determine associations with herd-level morbidity and mortality of pre-weaned calves. A 40-question survey about management practices, morbidity and mortality was administered to cow-calf producers by distributing paper surveys and by circulating an online link through various media. A total of 267 producers completed the survey. Data were analyzed with descriptive statistics and multivariable linear regression models. Average herd-level treatment risk for pre-weaning calf diarrhea (PCD) and bovine respiratory disease (BRD) were 4.9% and 3.0%, respectively. Average herd-level mortality within the first 24 h of life (stillbirth), from 1 to 7 days and 7 days to weaning were 2.3%, 1.1%, and 1.4%, respectively. Operations that never intervened at parturition had 4.7% higher PCD than those that occasionally did. On operations using small elastrator bands for castration, PCD was 1.9% higher than those using other methods. For every increase of 100 cows in herd size, BRD decreased by 1.1%. The association between BRD and PCD varied by when calving season began. Operations that used off-farm, frozen colostrum had a 1.1% increase in stillbirths. Operations that verified a calf had suckled had 0.7% lower mortality from 1 to 7 days of age. Those that intervened when colostrum was abnormal or that used small elastrator bands for castration had 1.9% and 1.4% higher mortality during the 1 st week of life, respectively, compared with other operations. Mortality from 7 days to weaning was lower by 0.7% when calving season started in April compared with January or February and was higher by 1.0% for each additional week of calving season. Operations that intervened with colostrum consumption for assisted calvings had lower mortality from 7 days to weaning by 0.8% compared with those that did not. For every 1.0% increase in BRD, mortality from 7 days to weaning increased by 1.0%. Stillbirths and mortality from 7 days to weaning decreased non-linearly with herd size. Factors related to calving season, herd size, interventions at calving, colostrum management and castration impacted herd-level morbidity and mortality. However, effect size was generally small and causation cannot be determined with a cross-sectional study design. This study identifies several common health management practices associated with calfhood morbidity and mortality that should be further investigated to establish evidence-based management strategies to improve the health and survival of beef calves.

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“…Os cordeiros cujas mães receberam dexametasona (PREDEX) tiveram mais facilidade neste processo, além de menor quantidade de líquido presente nas narinas e traqueia. Logo após o rompimento do cordão umbilical, a diminuição da tensão de oxigênio e o aumento da concentração de dióxido de carbono estimulam os reflexos respiratórios, com subsequente expansão dos pulmões (Nagy 2009). Na presença de distocia prolongada e/ou em situações em que a hipercapnia ou acidose seja iniciada antes da expulsão do feto, a depressão do sistema nervoso pode ser severa o suficiente para prejudicar os reflexos que iniciam a respiração (Camargo 2010, Bovino 2011.…”

Section: Resultsunclassified

“…A remoção de líquido do sistema pulmonar é crítica e essencial para que a ventilação normal e a oxigenação sanguínea ocorram (Nagy 2009). Uma parte deste líquido é eliminada do organismo durante o parto; entretanto, a maior parte é rapidamente absorvida através das paredes alveolares para dentro do interstício no início da respiração (Egan et al 1975).…”

Section: Resultsunclassified

Efeitos da corticoterapia materna nos valores hemogasométricos de cordeiros nascidos a termo e prematuros

Feitosa

Ávila

Bovino³

et al. 2017

Pesq. Vet. Bras.

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RESUMO: O objetivo do estudo foi avaliar as variáveis hemogasométricas de cordeiros nascidos a termo e prematuros do nascimento às 48 horas de vida. Foram constituídos quatros grupos experimentais: PN (cordeiros nascidos de parto normal, n=15, média de 146 dias de gestação); PNDEX (cordeiros nascidos de parto normal, cujas mães receberam 16 mg de dexametasona aos 141 de gestação, n=8, média de 143 dias de gestação); PRE (cordeiros prematuros nascidos de cesarianas aos 138 dias de gestação, n=10) e PREDEX (cordeiros prematuros nascidos de cesarianas aos 138 dias de gestação, cujas mães receberam 16 mg de dexametasona dois dias antes do parto, n=9). Imediatamente após o nascimento, os cordeiros de todos os grupos apresentaram quadro de acidose respiratória (pH baixo e pCO2 elevada), com maior ênfase nos animais prematuros. A concentração de HCO3 - diminuiu entre 15 e 60 minutos de vida, principalmente nos grupos PRE e PREDEX, com posterior aumento no M24h. Os valores de diferença de base foram menores nos cordeiros prematuros, os quais apresentaram respiração abdominal, intensa dispneia e grande quantidade de líquido pulmonar. A estabilização do equilíbrio ácidobase ocorreu em todos os animais ao longo das primeiras 24 horas de vida. A dexametasona teve influência positiva sobre a condição clínica dos animais prematuros, resultando em adequada ventilação e perfusão tecidual, o que garantiu maior taxa de sobrevivência.

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Resuscitation and Critical Care of Neonatal Calves

Cited by 24 publications

References 25 publications

Electrocardiographic Analysis of ST-Segment Duration and Morphology in Sheep and Goats: Effect of Species, Breed, Age and Sex

Electrocardiographic Analysis of ST-Segment Duration and Morphology in Sheep and Goats: Effect of Species, Breed, Age and Sex

Calf management practices and associations with herd-level morbidity and mortality on beef cow-calf operations

Efeitos da corticoterapia materna nos valores hemogasométricos de cordeiros nascidos a termo e prematuros

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