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| Registros recuperados: 14 | |
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| Pinto,MCL; Melo,MB; Cruz,ML; Verçosa Junior,D; Melo,MM. |
| Accidental envenomation caused by Tityus serrulatus scorpions is very common in Brazil and may result in serious cardiorespiratory alterations that are frequently fatal to children. In the present study, the effects of T. serrulatus venom on the cardiorespiratory system of recently weaned male Wistar rats were evaluated. Fifteen animals were distributed into three groups (n = 5). The control group A received 400 μL ultrapure water by subcutaneous injection, while the experimental groups B and C were injected with scorpion venom (100 and 450 μg, respectively, in 400 μL water). Electrocardiogram (ECG) traces were obtained prior to the experiment, at five-minute intervals up to 30 minutes after treatment. At 40 minutes after envenomation, the animals had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tityus serrulatus; Rats; Electrocardiography; CK; CK-MB; Troponin; Pulmonary hemorrhages. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000200008 |
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| Borboleta,LR; Silva,EF; Oliveira,MS; Michel,AFRM; Ferraz,VP; Leite,RC; Melo,MM. |
| Clinical and laboratory changes were evaluated in rabbits after intoxication by Amorimia rigida, a plant that causes sudden death. Nine New Zealand male rabbits, averaging 3.54 kg, were categorized into three groups (n = 3) and received, for eight consecutive days, the equivalent of 30 g/kg dry matter of A. rigida water-soluble (SG) and water-insoluble (IG) extracts via nasoesophageal route. The control group received water. There were no alterations in creatine kinase enzyme (CK), CK myocardial fraction (CKMB) or troponine I (cTnI). None of the animals had clinical or electrocardiographic (conventional and Holter) alterations. There were progressive decreases in the left ventricular ejection fraction and systolic fractional shortening. Doppler... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toxic plant; Amorimia rigida; Cardiac muscle profile; Electrocardiography; Echocardiography; Rabbit. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000300007 |
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| Costal-Oliveira,Fernanda; Guerra-Duarte,Clara; Oliveira,Maira Souza; Castro,Karen Larissa Pereira de; Lopes-de-Sousa,Leticia; Lara,Aline; Gomes,Enéas Ricardo de Morais; Bonilla,Cesar; Guatimosim,Sílvia; Melo,Marília Martins; Chávez-Olórtegui,Carlos. |
| Abstract Background Hadruroides lunatus is the most abundant scorpion species in the Peruvian central coast, where most of the accidents involving humans are registered. In spite of its prevalence, there are only very few studies on H. lunatus envenomation. The aim of the present study was to analyze the cardiorespiratory alterations caused by H. lunatus envenomation in rodents. Methods Wistar rats injected with H. lunatus scorpion venom were submitted to electrocardiography. After euthanasia, rat lungs were collected and histopathologically analyzed. Mouse cardiomyocytes were used to perform immunofluorescence and calcium transient assays. Data were analyzed by ANOVA or Student’s t-test. The significance level was set at p< 0.05. Results It was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hadruroides lunatus venom; Cardiorespiratory alterations; Electrocardiography; Immunofluorescence; Calcium transient. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100301 |
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| Pereira-Junior,Pedro P.; Marocolo,Moacir; Rodrigues,Fabricio P.; Medei,Emiliano; Nascimento,José H.M.. |
| Heart rate variability (HRV) analysis consists in a well-established tool for the assessment of cardiac autonomic control, both in humans and in animal models. Conventional methods for HRV analysis in rats rely on conscious state electrocardiogram (ECG) recording based on prior invasive surgical procedures for electrodes/transmitters implants. The aim of the present study was to test a noninvasive and inexpensive method for ECG recording in conscious rats, assessing its feasibility for HRV analysis. A custom-made elastic cotton jacket was developed to fit the rat's mean thoracic circumference, with two pieces of platinum electrodes attached on its inner surface, allowing ECG to be recorded noninvasively in conscious, restrained rats (n=6). Time- and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrocardiography; Heart rate variability; Methodology; Noninvasive; Rat. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200019 |
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| Oliveira,M.S.; Muzzi,R.A.L.; Araújo,R.B.; Muzzi,L.A.L.; Ferreira,D.F.; Silva,E.F.. |
| Cardiac diseases promote alterations in the autonomic control of the heart, leading to an increase in heart rate and, as a result, a decrease in heart rate variability (HRV).The aim of this study was to evaluate if the development of heart failure secondary to degenerative mitral valve disease (DMVD) concurs with changes in autonomic modulation of heart rhythm which are assessed by long electrocardiography examination (Holter). Dogs were evaluated by clinical examination and echocardiography in order to be categorized into the following groups: Control (healthy; n=6), DMVD (disease without heart failure; n=8), and DMVD heart failure (disease with heart failure; n=13). Arrhythmias and frequency domain HRV were determined by Holter. Diseased animals, when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrocardiography; Heart failure; Frequency-domain; Cardiology. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000200015 |
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| Santos,P.O.P.R.; Santos,E.A.; Reis,A.C.; Santos,A.M.M.R.; Kuster,M.C.C.; Trivilin,L.O.; Aptekmann,K.P.. |
| ABSTRACT Physical activity alters the cardiovascular system of dogs, depending on the exercise characteristics and the animal’s physical conditioning. Little is known about the cardiovascular changes in rescue-trained dogs. This study evaluated the cardiovascular responses to a search and rescue exercise session to differentiate these alterations from cases of exhaustion or some possible pathology. Nine healthy rescue-trained dogs that trained for at least one year were used. Seven German Shepherds and two Belgian Shepherd Malinois were evaluated twice, immediately before exercise (M0) and immediately after a 20-minute training (M1). Electrocardiographic, echocardiographic, and systemic blood pressure (SBP) measurements were performed at each evaluation.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Working dog; Blood pressure; Echocardiography; Electrocardiography; Exercise physiology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000401036 |
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| Santos,F.P. dos; Pascon,J.P.E.; Pereira,D.T.P.; Anjos,B.L.; Mistieri,M.L.A.; Silveira,I.D.; Porciuncula,M.L.. |
| Visceral leishmaniasis (VL) is a cosmopolitan parasitic zoonosis that can promote myocarditis and heart rate changes in canine and human hosts. Thus, histopathological aspects of the myocardium and clinical, hematological, biochemical, radiological and electrocardiographic data were evaluated in a group of 36 dogs naturally infected with VL (VLG) and compared to data from 15 non-infected dogs (CG=Control Group). A prevalence of asymptomatic dogs was present in the CG (100%) and polysymptomatic dogs in the VLG (66%). In addition, two dogs in the VLG demonstrated systolic murmurs in the mitral valve region: one with a II/VI intensity and the other with a III/VI intensity. The mean values of RBC, hemoglobin and hematocrit were lower in dogs in VLG and were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrocardiography; Leishmania sp.; Visceral leishmaniasis; Dogs. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000601519 |
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| Ribeiro,A.L.P.; Drummond,J.B.; Volpini,A.C.; Andrade,A.C.; Passos,V.M.A.. |
| The pentavalent antimonial (Sb5+) meglumine is the drug of choice for the treatment of cutaneous leishmaniasis (CL) in Brazil. Although the cardiotoxicity of high-dose, long-term Sb5+ therapy is well known, the use of low-dose, short-term meglumine has been considered to be safe and relatively free from significant cardiac effects. In order to investigate the cardiotoxicity of low-dose, short-term therapy with meglumine in cutaneous leishmaniasis, 62 CL patients treated with meglumine were studied. A standard ECG was obtained before and immediately after the first cycle of treatment (15 mg Sb5+ kg-1 day-1). The electrocardiographic interpretation was carried out blindly by two investigators using the Minnesota Code. There were no significant differences in... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cutaneous leishmaniasis; Electrocardiography; QT interval. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000300008 |
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| Camplesi,Annelise Carla; Bellodi,Carolina; Socha,José Javier Mesa; Hatayde,Mário Roberto; Sobreira,Márcia Ferreira da Rosa; Araujo,Gustavo Henrique Marques; Araujo,Carla Fredrichsen Moya. |
| ABSTRACT: Nerium oleander is distributed worldwide, mainly in tropical and subtropical regions. These shrubs are frequently used as ornamental plants. However, they contain more than 30 cardiac glycosides that can cause serious toxic effects in dogs. The objective of this study was to report the clinical and electrocardiographic alterations in dogs experimentally poisoned with N. oleander. Ten adult, healthy, mixed-breed dogs weighing 10-25kg and aged 3-6 years were selected for the study. We orally administered 0.25g kg-1 of fresh ground leaves of N. oleander to the dogs. No dog died after the ingestion, but all exhibited signs of poisoning such as vomiting, sialorrhea, nausea, apathy, conjunctiva congestion, dehydration, abdominal pain, tremors,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blood pressure; Arrhythmia; Electrocardiography; Cardiac glycosides; Canine. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600553 |
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| Registros recuperados: 14 | |
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