12 research outputs found

    NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the Neotropics

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    Xenarthrans‚ÄĒanteaters, sloths, and armadillos‚ÄĒhave essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, 10 anteaters, and 6 sloths. Our data set includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the southern United States, Mexico, and Caribbean countries at the northern portion of the Neotropics, to the austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n¬†=¬†5,941), and Cyclopes sp. have the fewest (n¬†=¬†240). The armadillo species with the most data is Dasypus novemcinctus (n¬†=¬†11,588), and the fewest data are recorded for Calyptophractus retusus (n¬†=¬†33). With regard to sloth species, Bradypus variegatus has the most records (n¬†=¬†962), and Bradypus pygmaeus has the fewest (n¬†=¬†12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other data sets of Neotropical Series that will become available very soon (i.e., Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans data set. Please cite this data paper when using its data in publications. We also request that researchers and teachers inform us of how they are using these data

    Estudo comparativo entre cirurgia de revascularização miocárdica com e sem circulação extracorpórea em mulheres Comparative study between on-pump and off-pump coronary artery bypass graft in women

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    INTRODU√á√ÉO: Tem sido bem documentado que mulheres t√™m taxas de morbimortalidade mais altas que homens submetidos √† cirurgia de revasculariza√ß√£o mioc√°rdica (CRM). Em vista desta evid√™ncia, √© necess√°rio saber se h√° benef√≠cio da CRM sem circula√ß√£o extracorp√≥rea (CEC) em compara√ß√£o √† CRM com CEC. OBJETIVOS: Comparar desfechos de morbimortalidade entre CRM sem CEC e CRM com CEC. M√ČTODOS: Estudo retrospectivo. Nossa investiga√ß√£o analisa comparativamente o perfil cl√≠nico, 13 complica√ß√Ķes relativas ao procedimento e mortalidade de uma popula√ß√£o de 941 mulheres submetidas √† CRM (549 sem CEC e 392 com CEC) em dois hospitais, no per√≠odo de janeiro de 2000 a dezembro de 2005. RESULTADOS: A taxa de mortalidade em mulheres submetidas √† CRM sem CEC √© menor que mulheres submetidas √† CRM com CEC, entretanto, a diferen√ßa n√£o √© estatisticamente significativa (3,1% vs. 5,3%; P=0,134). As taxas de complica√ß√Ķes analisadas (choque hemorr√°gico, neurol√≥gicas, respirat√≥rias, insufici√™ncia renal aguda, s√≠ndrome da ang√ļstia respirat√≥ria do adulto, septicemia, pneumonia, fibrila√ß√£o atrial) foram menores (diferen√ßa estatisticamente significativa) em mulheres do grupo CRM sem CEC em compara√ß√£o ao grupo CRM com CEC, com exce√ß√£o das complica√ß√Ķes baixo d√©bito card√≠aco e infec√ß√£o de ferida operat√≥ria. CONCLUS√ēES: As evid√™ncias sugerem que CRM sem CEC pode beneficiar as mulheres em compara√ß√£o com CRM com CEC, pois parece reduzir as taxas de morbimortalidade. Dez das 13 complica√ß√Ķes investigadas demonstraram uma significativa vantagem das mulheres submetidas √† CRM sem CEC em rela√ß√£o √†quelas submetidas √† CRM com CEC.<br>BACKGROUND: It has been well documented that women have higher morbidity and mortality rates than men following coronary artery bypass graft (CABG) surgery. In view of this evidence, it is necessary to know if there is benefit to off-pump CABG surgery in women in comparison to on-pump CABG. OBJECTIVES: Compare outcomes between off-pump CABG and on-pump CABG in women. METHODS: Retrospective study. Our investigation analyzes comparatively clinical profile, thirteen procedure complications and mortality of a population of 941 consecutive women undergoing CABG surgery (549 off-pump and 392 on-pump) at two hospitals for the period January 2000 to December 2005. RESULTS: Mortality rate for women undergoing off-pump CABG surgery is lower than for women undergoing on-pump surgery, however, not statistically significant (3.1% vs 5.3%; P=0.134). The complication rates analyzed (hemorrhagic shock, neurologic, respiratory, acute renal failure, adult respiratory distress syndrome, septicemia, pneumonia, atrial fibrillation) were lower (significant statistically difference) for women off-pump than women on-pump, with the exception of low cardiac output and wound infection. CONCLUSIONS: Evidence suggests that off-pump CABG surgery may be better for women than on-pump CABG surgery because it appears to reduce morbimortality rates. Ten of 13 complications investigated demonstrated an advantage for women undergoing off-pump surgery relative to those receiving on-pump surgery

    Aspectos t√©cnicos na esqueletiza√ß√£o da art√©ria tor√°cica interna com bisturi ultra-s√īnico

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    OBJETIVO: Descrever a t√©cnica e avaliar os resultados imediatos da utiliza√ß√£o do bisturi ultra-s√īnico nas esqueletiza√ß√Ķes da art√©ria tor√°cica interna, na cirurgia de revasculariza√ß√£o do mioc√°rdio. M√ČTODO: Foram operados com essa t√©cnica 188 pacientes submetidos √† cirurgia de revasculariza√ß√£o do mioc√°rdio, no per√≠odo de janeiro de 2000 a outubro de 2006. Setenta e um (37,8%) pacientes eram do sexo feminino. A idade variou de 28 a 81 anos. A t√©cnica utilizada na disseca√ß√£o consistiu em expor toda art√©ria tor√°cica interna, abrindo-se a f√°scia endotor√°cica com tesoura o mais pr√≥ximo poss√≠vel da advent√≠cia da art√©ria. Com o bisturi ultra-s√īnico √© feita a sec√ß√£o dos ramos colaterais e sua respectiva hemostasia, dispensando-se o uso de "clips" met√°licos na art√©ria tor√°cica interna. RESULTADOS: As art√©rias tor√°cicas internas esqueletizadas com bisturi ultra-s√īnico apresentaram fluxos excelentes, n√£o sendo necess√°rias manipula√ß√Ķes intraluminais para vasodilata√ß√£o. No p√≥s-operat√≥rio imediato, dois pacientes apresentaram paralisia tempor√°ria da hemic√ļpula diafragm√°tica esquerda. N√£o houve infec√ß√£o do esterno nesta s√©rie. O tempo de disseca√ß√£o foi de aproximadamente 33 minutos, mas com o aumento da experi√™ncia esse tempo p√īde ser reduzido. CONCLUS√ÉO: Essa t√©cnica facilita e abrevia o procedimento da esqueletiza√ß√£o da art√©ria tor√°cica interna, n√£o promove espasmos e a cauteriza√ß√£o dos ramos colaterais com o bisturi ultra-s√īnico √© eficiente, dispensando o uso de "clips" met√°licos. √Č um procedimento de f√°cil reprodu√ß√£o, podendo ser recomendado para sua realiza√ß√£o de maneira preferencial

    Surgical results of coronary artery bypass grafting without cardiopulmonary bypass: analysis of 3,410 patients Resultados cir√ļrgicos na revasculariza√ß√£o do mioc√°rdio sem circula√ß√£o extracorp√≥rea: an√°lise de 3.410 pacientes

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    OBJECTIVES: Over the past few years, great strides have been made in off-pump coronary surgery. This progress is due to a combination of the advances in surgical techniques and the development of instruments that make it possible to perform this procedure in the most varied situations. This is a retrospective study, the purpose of which is to assess our experience with this procedure over the last eleven and a half years. The authors underscore the rapid progress of the method in recent years and report on its indications, contraindications and results. METHODS: In the period from August 1991 to December 2003, 3,410 consecutively patients suffering from angina pectoris were submitted to off-pump coronary surgery. Ages ranged from 13 to 93 years, with a mean of 63 ¬Ī 12.0 years. Males accounted for 58% of the cases. The angina was rated according to the criteria of the Canadian Cardiovascular Society, 6.1% of the patients being in Class I, 6.8% in Class II, 46.3% in Class III and 40.8% in Class IV. RESULTS: Intraoperative mortality was low (0.4%). Hospital mortality (30 postoperative days) was 2.5%. Mortality and morbidity among the octogenarian patients were extremely low compared with patients operated on with cardiopulmonary bypass (CPB) (2.2% versus 12.6%) (p<0.001). Postoperative complications regarded as nonfatal occurred in 7.6%. In the final year no difference was observed between the number of conduits in the patients operated on with and without CPB [with CPB 2.8 ¬Ī 1.2 and without 2.8 ¬Ī 0.8 (NS)]. Acute myocardial infarction was the most frequent complication, occurring in 2.7% of the patients. The mean time in the intensive care unit was 22.3 hours. CONCLUSIONS: Off-pump coronary surgery, employed as a revascularization technique in patients requiring multiple grafts, is a reproducible procedure, the results of which are similar to those obtained from conventional surgery with CPB. In the present series it was possible to perform coronary artery bypass grafting without CPB in 95% of the patients, thus making all patients with indication for grafting potential candidates for the procedure without CPB.<br>OBJETIVO: Nos √ļltimos anos, tem-se observado um grande avan√ßo na cirurgia de revasculariza√ß√£o mioc√°rdica sem circula√ß√£o extracorp√≥rea (RMSCEC). Esse desenvolvimento deveu-se √† combina√ß√£o dos avan√ßos da t√©cnica cir√ļrgica e ao desenvolvimento de instrumentos que possibilitam a realiza√ß√£o deste procedimento nas mais variadas situa√ß√Ķes. Este √© um estudo retrospectivo, que visa avaliar nossa experi√™ncia com este procedimento nos √ļltimos 11,5 anos. Os autores enfatizam o r√°pido progresso do m√©todo nos √ļltimos anos, suas indica√ß√Ķes, contra-indica√ß√Ķes e resultados. M√ČTODO: No per√≠odo de agosto de 1991 e dezembro de 2002, 3.410 pacientes consecutivos, portadores de angina do peito, foram submetidos a cirurgia de revasculariza√ß√£o mioc√°rdica sem circula√ß√£o extracorp√≥rea. A idade variou de 13 a 93 anos (63 12,0 anos), sendo 58% dos pacientes do sexo masculino. A angina foi classificada segundo a Canadian Cardiovascular Society, sendo 6,1% na classe I, 6,8% na classe II, 46,3% na classe III e 40,8% na classe IV. RESULTADOS: A mortalidade intra-operat√≥ria foi baixa (0,4%). A mortalidade hospitalar (trinta dias de p√≥s-operat√≥rio) foi de 2,58%. A mortalidade e morbidade, no grupo dos pacientes octogen√°rios, foram extremamente baixas em rela√ß√£o aos pacientes operados com circula√ß√£o extracorp√≥rea (2,2% x 12,6%) (p<0,001). As complica√ß√Ķes p√≥s-operat√≥rias que n√£o resultaram em √≥bito foram de 7,6%. No √ļltimo ano, n√£o observamos diferen√ßa entre o n√ļmero de condutos nos pacientes operados com e sem CEC [com CEC 2,81,2 e sem CEC 2,80,8 (NS)]. Infarto agudo do mioc√°rdio foi a complica√ß√£o n√£o fatal mais freq√ľente, observada em 2,8% dos pacientes. O tempo m√©dio de perman√™ncia na UTI foi de 22,3 horas. CONCLUS√ēES: A RMSCEC, usada como t√©cnica de revasculariza√ß√£o em pacientes multiarteriais, √© um procedimento reproduz√≠vel e apresenta resultados semelhantes aos obtidos com a opera√ß√£o convencional com CEC. Nesta s√©rie foi poss√≠vel revascularizar o mioc√°rdio sem circula√ß√£o extracorp√≥rea em mais de 95% dos pacientes, tornando assim, a princ√≠pio, todos os pacientes, com indica√ß√£o de revasculariza√ß√£o mioc√°rdica, potenciais candidatos √† opera√ß√£o de RMSCEC