Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 45
Filtrar
1.
JACC Case Rep ; 3(4): 653-657, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34317597

RESUMO

Valve disease in the presence of porcelain aorta and severe peripheral artery disease challenge physicians in choosing the appropriate therapy. We used a total transcatheter approach, simultaneously implanting a dedicated mitral and aortic valve prosthesis treating a patient with mitral and aortic valve disease at an extremely high surgical risk. (Level of Difficulty: Advanced.).

4.
Interact Cardiovasc Thorac Surg ; 27(1): 102-107, 2018 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-29490052

RESUMO

OBJECTIVES: Simultaneous surgical off-pump coronary revascularization and transcatheter aortic valve implantation (TAVI) as a hybrid procedure may be a therapeutic option for patients with a TAVI indication who are not suitable for percutaneous coronary intervention and for patients who have an indication for combined surgical aortic valve implantation and coronary artery bypass grafting but present with a porcelain aorta. Early outcomes of these patients are analysed in this study. METHODS: From February 2011 to April 2017, hybrid TAVI/off-pump coronary artery bypass (OPCAB) was performed in 12 (60%) patients, hybrid TAVI/minimally invasive direct coronary artery bypass in 6 (30%) patients and staged TAVI/OPCAB in 2 (10%) patients. Endpoints of this study were 30-day mortality, device success and postoperative adverse events as defined by the updated Valve Academic Research Consortium (VARC-2). RESULTS: The median age at the time of surgery was 77 years [interquartile range (IQR), 70-81] with a median logistic EuroSCORE and Society of Thoracic Surgeons' Predicted Risk score of 16.1% (IQR, 9.3-28.1) and 3.9% (IQR, 2.2-5.6), respectively. The median Synergy between PCI with Taxus and Cardiac Surgery score was 16.5 (IQR, 9.8-22.8). TAVI implantation routes were transaortic in 9 (45%) patients, transapical and transfemoral in 5 (25%) patients each and trans-subclavian in 1 (5%) patient. Complete myocardial revascularization was achieved in 75% of patients. Device success rate was 100%. Paravalvular aortic regurgitation did not exceed mild in any patient. Stroke/transient ischaemic attack, vascular complications and myocardial infarction were not observed. Re-exploration for bleeding was required in 1 (5%) patient. Thirty-day mortality was 0%. CONCLUSIONS: Hybrid OPCAB/MIDCAB and TAVI prove to be a safe and effective alternative treatment option in selected higher risk patients.


Assuntos
Estenose da Valva Aórtica/cirurgia , Ponte de Artéria Coronária sem Circulação Extracorpórea/métodos , Doença da Artéria Coronariana/cirurgia , Substituição da Valva Aórtica Transcateter/métodos , Idoso , Idoso de 80 Anos ou mais , Estenose da Valva Aórtica/complicações , Doença da Artéria Coronariana/complicações , Feminino , Próteses Valvulares Cardíacas , Humanos , Masculino , Seleção de Pacientes , Resultado do Tratamento
5.
J Thorac Dis ; 8(8): E660-6, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27621895

RESUMO

Mechanical circulatory support devices have become an important treatment tool for severe acute and chronic heart failure, since heart transplantation cannot meet the demands because of a lack of available donor organs. Since implantation of the first ventricular assist device a constant development of the suitability of these devices has been made. This review will introduce different generations of left ventricular assist devices (LVAD) and elaborate on clinical indications, risk stratification and current literature.

7.
Transfus Med Hemother ; 39(2): 121-128, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22670130

RESUMO

BACKGROUND: In aortic surgery bleeding complications can be fatal. Therefore, rotational thromboelastometry(ROTEM™)-based coagulation management was introduced. METHODS: After 5 cases of acute type A aortic dissection and aortic arch replacement had been treated based on ROTEM findings (ROTEM group; RG), 5 cases without ROTEM were matched as control group (CG). CG treatment was based on conventional tests and clinical findings. Blood component and coagulation factor requirements, ventilation time, duration of stay at intensive care unit (ICU), hospitalization, and thrombotic or bleeding incidents as well as transfusion-associated costs were compared. RESULTS: Administration of blood products and coagulation factor concentrates, ventilation time, ICU length of stay, and hospitalization tended to be lower in RG. Postoperative plasma transfusion (p = 0.038), recognized incidents (p = 0.048), and resulting costs on coagulation treatment (p = 0.049) were significantly reduced. CONCLUSION: Our data suggest that ROTEM-based coagulation management can reduce transfusion requirements and corresponding costs in patients with aortic arch replacement. These data has to be confirmed by prospective randomized trials.

8.
J Am Coll Cardiol ; 58(17): 1768-77, 2011 Oct 18.
Artigo em Inglês | MEDLINE | ID: mdl-21996389

RESUMO

OBJECTIVES: We determined the outcome of cardiac allografts from multiorgan donors enrolled in a randomized trial of donor pre-treatment with dopamine. BACKGROUND: Treatment of the brain-dead donor with low-dose dopamine improves immediate graft function after kidney transplantation. METHODS: A cohort study of 93 heart transplants from 21 European centers was undertaken between March 2004 and August 2007. We assessed post-transplant left ventricular function (LVF), requirement of a left ventricular assist device (LVAD) or biventricular assist device (BVAD), need for hemofiltration, acute rejection, and survival of recipients of a dopamine-treated versus untreated graft. RESULTS: Donor dopamine was associated with improved survival 3 years after transplantation (87.0% vs. 67.8%, p = 0.03). Fewer recipients of a pre-treated graft required hemofiltration after transplant (21.7% vs. 40.4%, p = 0.05). Impaired LVF (15.2% vs. 21.3%, p = 0.59), requirement of a LVAD (4.4% vs. 10.6%, p = 0.44), and biopsy-proven acute rejection (19.6% vs. 14.9%, p = 0.59) were not statistically different between groups. Post-transplant impaired LVF (hazard ratio [HR]: 4.95; 95% confidence interval [CI]: 2.08 to 11.79; p < 0.001), requirement of LVAD (HR: 6.65; 95% CI: 2.40 to 18.45; p < 0.001), and hemofiltration (HR: 2.83; 95% CI: 1.20 to 6.69; p = 0.02) were predictive of death. The survival benefit remained (HR: 0.33; 95% CI: 0.12 to 0.89; p = 0.03) after adjustment for various risks affecting mortality, including pre-transplant LVAD/BVAD, inotropic support, and impaired kidney function. CONCLUSIONS: Treatment of brain-dead donors with dopamine of 4 µg/kg/min will not harm cardiac allografts but appears to improve the clinical course of the heart allograft recipient. (Prospective Randomized Trial to Evaluate the Efficacy of Donor Preconditioning With Dopamine on Initial Graft Function After Kidney Transplantation; NCT00115115).


Assuntos
Cardiotônicos/administração & dosagem , Dopamina/administração & dosagem , Sobrevivência de Enxerto/efeitos dos fármacos , Transplante de Coração/mortalidade , Adulto , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
9.
PLoS One ; 5(12): e15790, 2010 Dec 22.
Artigo em Inglês | MEDLINE | ID: mdl-21203474

RESUMO

BACKGROUND: Accessing information that defines personally familiar context in real-world situations is essential for the social interactions and the independent functioning of an individual. Personal familiarity is associated with the availability of semantic and episodic information as well as the emotional meaningfulness surrounding a stimulus. These features are known to be associated with neural activity in distinct brain regions across different stimulus conditions (e.g., when perceiving faces, voices, places, objects), which may reflect a shared neural basis. Although perceiving context-rich personal familiarity may appear unchanged in aging on the behavioral level, it has not yet been studied whether this can be supported by neuroimaging data. METHODOLOGY/PRINCIPAL FINDINGS: We used functional magnetic resonance imaging to investigate the neural network associated with personal familiarity during the perception of personally familiar faces and places. Twelve young and twelve elderly cognitively healthy subjects participated in the study. Both age groups showed a similar activation pattern underlying personal familiarity, predominantly in anterior cingulate and posterior cingulate cortices, irrespective of the stimulus type. The young subjects, but not the elderly subjects demonstrated an additional anterior cingulate deactivation when perceiving unfamiliar stimuli. CONCLUSIONS/SIGNIFICANCE: Although we found evidence for an age-dependent reduction in frontal cortical deactivation, our data show that there is a stimulus-independent neural network associated with personal familiarity of faces and places, which is less susceptible to aging-related changes.


Assuntos
Envelhecimento , Mapeamento Encefálico/métodos , Encéfalo/fisiologia , Rede Nervosa , Reconhecimento Psicológico/fisiologia , Adulto , Idoso , Diagnóstico por Imagem/métodos , Face , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Reconhecimento Visual de Modelos/fisiologia
10.
Psychoneuroendocrinology ; 35(3): 414-21, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19913360

RESUMO

BACKGROUND: Subtle and inconsistent differences in hypothalamic-pituitary-adrenal (HPA) axis activity have been reported for patients with panic disorder. While these patients show little or no alterations in basal ACTH and cortisol levels, it has been hypothesized that HPA hyperresponsivity was a trait in panic patients when exposed to novel and uncontrollable stimulation. METHODS: Thirty-four patients (23 females, mean age 35 yrs) diagnosed with panic disorder were compared to 34 healthy controls matched for age, gender, smoking status, and use of oral contraceptives. Both groups were exposed twice to a potent laboratory stress protocol, the Trier Social Stress Test (TSST) on consecutive days. Free salivary cortisol levels and heart rate responses were repeatedly measured before and following the TSST. In addition, the cortisol awakening response (CAR) was assessed to further investigate HPA reactivity in PD patients. RESULTS: While the TSST induced similar heart rate stress responses in both groups, cortisol responses were clearly absent in the panic patients with normal responses in the controls (F(1.96, 66)=20.16; p<0.001). No differences in basal cortisol levels were observed in the extended baseline period. The same cortisol stress non-response patterns were observed when patients with/without comorbid depression, or with/without psychotropic medication were compared. In contrast to their non-response to the psychosocial stressor, panic patients showed a significant CAR. CONCLUSION: These findings provide strong evidence to suggest that PD patients present with a striking lack of cortisol responsivity to acute uncontrollable psychosocial stress under laboratory conditions. This unresponsiveness of the HPA axis appears to be rather specific, since a normal CAR in the morning could be documented in these patients. Thus, the present results do not support the hypothesis that PD patients show a trait HPA hyperresponsiveness to novel and uncontrollable stimulation. In contrast, the data provide support for a hyporesponsive HPA axis under emotional stress in PD patients.


Assuntos
Nível de Alerta/fisiologia , Hidrocortisona/metabolismo , Transtorno de Pânico/metabolismo , Estresse Psicológico/metabolismo , Adaptação Psicológica/fisiologia , Adulto , Feminino , Humanos , Hidrocortisona/análise , Sistema Hipotálamo-Hipofisário/metabolismo , Sistema Hipotálamo-Hipofisário/fisiopatologia , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Transtorno de Pânico/complicações , Transtorno de Pânico/fisiopatologia , Sistema Hipófise-Suprarrenal/metabolismo , Sistema Hipófise-Suprarrenal/fisiopatologia , Estresse Psicológico/complicações , Estresse Psicológico/fisiopatologia , Vigília/fisiologia , Adulto Jovem
11.
Artigo em Inglês | MEDLINE | ID: mdl-19476622

RESUMO

BACKGROUND: Ethnic diversity in schools increases due to globalization. Thus, the children's social-emotional competence development must be considered in the context of a multi-ethnic classroom. METHODS: In this study, the social-emotional competence of 65 Asian-American and Latin-American children was observed at the beginning and the end of their kindergarten year. RESULTS: Initially, significant differences existed among these ethnic groups in respect to moral reasoning. Furthermore, the male children showed more dysregulated aggression but the female children implemented more moral reasoning than their male counterparts. These ethnic specificities did not disappear over the course of the year. In addition, a significant change in avoidance strategies as well as expressed emotions in the narrative took place over the course of one year. CONCLUSION: Ethnic specificity in social-emotional competence does exist independent of gender at the beginning as well as at the end of the kindergarten year in a multi-ethnic kindergarten classroom.

12.
Nephrol Dial Transplant ; 23(9): 2853-60, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18388121

RESUMO

BACKGROUND: Acute kidney injury (AKI) is a serious and frequent complication after coronary artery bypass grafting (CABG). Cardiopulmonary bypass (CPB) was identified as a major AKI risk factor after CABG. Our aim was to assess the impact of the off-pump coronary artery bypass (OPCAB) compared to the on-pump coronary artery bypass (ONCAB) technique on the rate and severity of AKI, while taking other risk factors for AKI into account. METHODS: An observational study of 201 consecutive adult patients was conducted; 100 were operated by the OPCAB and 101 by the ONCAB technique. All patients in each group were operated by a single, experienced surgeon. Fifteen pre-, intra- and postoperative variables that were repeatedly identified in previous studies as independent AKI risk factors were included in this analysis. AKI was defined as an increase of serum creatinine >/=50% or >/=0.3 mg/dL within 48 h and AKI severity was classified, according to current AKIN definitions. RESULTS: Significantly fewer OPCAB patients developed AKI compared to ONCAB (14.0 versus 27.7%; P = 0.03). OPCAB was associated with milder stages of AKI, whereas ONCAB patients had more severe AKI. Congestive heart failure and chronic kidney disease were independent risk factors for AKI. The OPCAB technique for CABG was identified as the only independent factor associated with lower incidence of AKI. CONCLUSIONS: Using current AKI definitions and classifications, the OPCAB technique for CABG, which avoids CPB; was associated with a significantly lower rate and less severe AKI compared to ONCAB. The OPCAB technique was identified as the only modifiable and potentially protective factor against postoperative AKI.


Assuntos
Injúria Renal Aguda/etiologia , Ponte de Artéria Coronária sem Circulação Extracorpórea , Injúria Renal Aguda/sangue , Injúria Renal Aguda/mortalidade , Idoso , Proteína C-Reativa/análise , Ponte Cardiopulmonar/efeitos adversos , Ponte de Artéria Coronária sem Circulação Extracorpórea/efeitos adversos , Creatinina/urina , Feminino , Taxa de Filtração Glomerular , Insuficiência Cardíaca/epidemiologia , Mortalidade Hospitalar , Humanos , Interleucina-6/análise , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/epidemiologia , Insuficiência Renal Crônica/epidemiologia , Fatores de Risco , Índice de Gravidade de Doença
13.
J Endovasc Ther ; 15(2): 135-43, 2008 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-18426269

RESUMO

PURPOSE: To quantify inflammatory markers in a large cohort of patients undergoing thoracic endovascular aortic repair (TEVAR) and investigate if profound biomarker elevations may be predictors of postprocedural death. METHODS: We analyzed data from 103 patients (70 men; mean age 64.5+/-11.2 years, range 22-83) undergoing TEVAR between July 1999 and December 2006. Baseline as well as at least 3 serial measurements of C-reactive protein (CRP), fibrinogen, white blood cell (WBC) count, and D-dimers were performed within the first 20 days after TEVAR. RESULTS: Compared with baseline, all inflammatory biomarker levels rose significantly. WBC peaked 2 days after the procedure, whereas CRP, fibrinogen, and D-dimers showed a sustained elevation up to 20 days after TEVAR. Inflammatory responses were more pronounced in patients with acute aortic pathology compared with chronic aortic diseases. There was evidence of greater increase in biomarkers with an increasing number of stent-grafts implanted. Kaplan-Meier analysis suggested that increasing maximum D-dimer values postoperatively were associated with decreased survival after TEVAR (p=0.036) in a subset of patients; however, multivariate analysis failed to identify postinterventional biomarker elevation as independent predictor of in-hospital death. CONCLUSION: Postprocedural inflammatory responses characterized by elevations of CRP, fibrinogen, D-dimers, and WBC are observed in all patients undergoing TEVAR. Our data indicate that this response is more pronounced in patients with acute aortic pathology and those receiving >1 stent-graft.


Assuntos
Aorta Torácica , Doenças da Aorta/cirurgia , Implante de Prótese Vascular , Stents , Síndrome de Resposta Inflamatória Sistêmica/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Análise de Variância , Doenças da Aorta/mortalidade , Biomarcadores/sangue , Proteína C-Reativa/metabolismo , Feminino , Produtos de Degradação da Fibrina e do Fibrinogênio/metabolismo , Fibrinogênio/metabolismo , Humanos , Contagem de Leucócitos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Curva ROC , Estatísticas não Paramétricas , Análise de Sobrevida , Síndrome de Resposta Inflamatória Sistêmica/mortalidade
14.
Neurosci Lett ; 436(1): 67-71, 2008 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-18358611

RESUMO

Transcription factor AP-2beta may influence brain monoaminergic systems by regulating target genes. Several monoaminergic genes, including the serotonin transporter gene, have AP-2beta binding sites. Late auditory-evoked potentials (P1, N1/P2) and impulsiveness-related personality traits are correlated, and both are modulated by monoaminergic neurotransmission. The present study assesses the impact of two AP-2beta polymorphisms (VNTRs within intron 1 and 2) together with the serotonin transporter polymorphism 5-HTTLPR on late auditory-evoked potentials and personality for the first time. EEG was recorded from 91 male subjects at central electrode positions while tones of six intensity levels were presented. Additionally, subjects completed personality questionnaires. Both AP-2beta polymorphisms revealed significant main effects on P1, and haplotype analysis confirmed the contribution of both AP-2beta-polymorphisms. Additionally, AP-2beta and 5-HTTLPR showed interactions with respect to P1. 5-HTTLPR revealed a main effect on N1/P2 but not P1. Impulsiveness showed an association with intron 1 VNTR. The results are discussed with respect to differential impact of AP-2beta polymorphisms and 5-HTTLPR on the monoaminergic systems. The findings promote replication in a larger sample and suggest a potential usefulness of AP-2beta polymorphisms in explaining or predicting central nervous diseases, drug effects and side effects.


Assuntos
Comportamento/fisiologia , Potenciais Evocados Auditivos , Predisposição Genética para Doença , Proteínas da Membrana Plasmática de Transporte de Serotonina/genética , Fator de Transcrição AP-2/genética , Adulto , Transtornos Disruptivos, de Controle do Impulso e da Conduta/genética , Eletroencefalografia , Genótipo , Humanos , Desequilíbrio de Ligação , Masculino , Testes de Personalidade , Polimorfismo Genético
16.
Ann Thorac Surg ; 84(1): 17-24, 2007 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-17588374

RESUMO

BACKGROUND: Treatment of ST-elevation myocardial infarction has undergone great evolution since introduction of percutaneous coronary intervention (PCI). The purpose was therefore to assess the outcome of patients with ST-elevation myocardial infarction undergoing surgical revascularization with coronary artery bypass grafting (CABG). METHODS: A total of 138 consecutive patients with ST-elevation myocardial infarction underwent CABG therapy between January 2000 and January 2007 at our institution. Prospectively recorded preoperative, intraoperative, and postoperative data were retrospectively screened for in-hospital mortality and major adverse cardiac events (MACE). RESULTS: The delay between the onset of ST-elevation myocardial infarction symptoms and CABG procedures was within 6 hours in 37 patients, 7 to 24 hours in 21, 1 to 3 days in 15, 4 to 7 days in 24, and 8 to 14 days in 41 patients. Cardiogenic shock (Killip class > or = III) was present in 38 patients (28%), and 37 patients (27%) were referred for CABG after failed PCI. Overall in-hospital mortality was 8.7%, but mortality varied between 10.8% (< or = 6 hours), 23.8% (7 to 24 hours), 6.7% (1 to 3 days), 4.2% (4 to 7 days), and 2.4% (8 to 14 days), depending on time interval from symptom onset to operation. Overall, more nonsurvivors were women (58% versus 23%; p < 0.01), had higher preoperative cardiac troponin I levels (13.2 +/- 9.8 versus 4.5 +/- 4.2 ng/ml; p < 0.0001), and were more frequently in cardiogenic shock (83% versus 22%; p < 0.0001). Unadjusted univariable and risk-adjusted multivariable logistic regression analysis revealed age, female sex, preoperative cardiac troponin I levels, and cardiogenic shock to be the most potent predictors of in-hospital death and MACE. CONCLUSIONS: CABG in ST-elevation myocardial infarction can be performed with acceptable risk by incorporating adequate management strategies. However, female sex, preoperative cardiac troponin I level, preoperative cardiogenic shock, and time to operation are major variables of mortality and morbidity results.


Assuntos
Ponte de Artéria Coronária , Eletrocardiografia , Infarto do Miocárdio/cirurgia , Idoso , Ponte de Artéria Coronária/efeitos adversos , Feminino , Mortalidade Hospitalar , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/fisiopatologia , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Resultado do Tratamento , Troponina I/sangue
17.
J Affect Disord ; 101(1-3): 13-26, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17207536

RESUMO

BACKGROUND: Hyperthymic Temperament (HYT) and a closely related trait, Hypomanic Personality (HYP), have both been related to bipolar affective disorder (BAD). Intensity dependence of auditory evoked potentials (IAEP) is a suggested inverse indicator of serotonergic neurotransmission and has been found to be elevated in BAD. Therefore the present study explored for the first time whether subclinical variance of HYT/HYP is also associated with IAEP in a healthy sample. As several traits from biological personality research are correlated with HYT/HYP and also with BAD, the specificity of results against these traits was further analyzed by calculating multiple regression analyses. METHODS: Evoked potentials were recorded from a sample (N=87) homogenous for confounding variables influencing IAEP. For this reason, only 19 to 27-year-old non-smoker psychiatrically healthy male students were included. RESULTS: Significant correlations were found between IAEP and both HYP and HYT. Including Sensation or Novelty Seeking and Extraversion in Regression Analyses did not weaken the associations of HYP with IAEP much, but did affect those of HYT. However, these competing biological personality traits were hardly able to predict IAEP themselves. Impulsivity, though, was able to reduce the predictive power of HYP and HYT and to explain unique IAEP-variance. This was even more the case for Behavioral-Activation-System-Sensitivity (BAS) subscale Fun Seeking clearly dominating all regression analyses. LIMITATIONS: Homogeneity of sample. CONCLUSIONS: The impact of BAS is in agreement with the assumption that heightened BAS-sensitivity is an underlying biological cause for HYP/HYT and for BAD. Future studies on BAD should include BAS and Impulsivity besides HYP/HYT to further explore uniqueness of the latter and to develop questionnaires based on those items of a hyperthymic-hypomanic-impulsive-funseeking item pool, which possess the most external validity.


Assuntos
Nível de Alerta/fisiologia , Transtorno Bipolar/fisiopatologia , Eletroencefalografia , Transtornos da Personalidade/fisiopatologia , Temperamento/fisiologia , Adulto , Afeto/fisiologia , Transtorno Bipolar/diagnóstico , Transtorno Bipolar/psicologia , Potenciais Evocados Auditivos/fisiologia , Comportamento Exploratório/fisiologia , Extroversão Psicológica , Humanos , Individualidade , Percepção Sonora/fisiologia , Masculino , Transtornos da Personalidade/diagnóstico , Transtornos da Personalidade/psicologia , Inventário de Personalidade , Valores de Referência , Serotonina/fisiologia , Estatística como Assunto , Transmissão Sináptica/fisiologia
18.
Catheter Cardiovasc Interv ; 68(6): 843-52, 2006 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17089408

RESUMO

BACKGROUND: Endovascular stent-graft placement is emerging as a novel treatment option for patients with diseases of the descending thoracic aorta. However, currently no consensus guidelines exist to direct uniformity in stent-graft procedures as well as for pre- and postprocedural patient management, unlike that for the management of other cardiovascular disorder. Accordingly, the aim of the present survey was to assess variations in thoracic aortic stent-graft practice among different subspecialties in Germany. METHODS: An interdisciplinary questionnaire survey was conducted among 206 departments of vascular surgery, radiology, cardiology, and cardiothoracic surgery in Germany that actively performed aortic stent-graft placement. Data on preoperative procedure planning, logistics, practical/technical issues of stent-graft placement, and postoperative patient management were evaluated using a standardized, self-administered questionnaire comprising 29 items. Responses were tabulated for analysis. RESULTS: Of a total of 206 questionnaires, 184 (89.3%) were returned with 71 (38.5%) centers reporting to have performed thoracic aortic stent-graft placement (total number of procedures 2,267) through 1997 and 2003. The average number of stent-graft procedures per year was 7.4 (25-75% percentile, 2.05-10.75) at participating sites, with 49% of the respondents reporting <5 procedures per year. Treatment of thoracic aortic aneurysms was the predominant indication for stent-graft placement, followed by type B-dissection. As anticipated, marked variability existed among the different medical specialties performing stent-graft procedures with respect to all aspects of the procedures including indication for treatment, choice of preoperative and intraoperative imaging modalities, technical equipment and perioperative management. The only consistent agreement was on the need for lifelong follow-up after stent-graft placement, with CT being the preferred imaging technique (90% of centers). CONCLUSION: The present survey documents an increasing adoption of endovascular stent-graft placement for patients with diseases of the descending thoracic aorta in Germany. Despite this, there is a lack of consensus among the different medical specialties performing stent-graft placement with respect to indications and technical execution of stent-grafting. Our data supports the need for consensus practice guidelines endorsed by medical professional societies for stent-graft procedure to standardize the growing number of thoracic stent graft procedures.


Assuntos
Angioplastia/métodos , Aorta Torácica/cirurgia , Aneurisma Aórtico/cirurgia , Implante de Prótese Vascular/métodos , Stents/estatística & dados numéricos , Aorta Torácica/diagnóstico por imagem , Aneurisma Aórtico/diagnóstico por imagem , Cardiologia , Alemanha , Pesquisas sobre Atenção à Saúde , Humanos , Guias de Prática Clínica como Assunto , Padrões de Prática Médica/estatística & dados numéricos , Radiografia , Radiologia Intervencionista , Cirurgia Torácica , Recursos Humanos
19.
Herz ; 31(5): 423-8, 2006 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-16944061

RESUMO

BACKGROUND AND PURPOSE: Patients with aortic valve (AV) pathology and severe comorbidities should benefit from reduced myocardial ischemic and extracorporeal circulation (ECC) time. Sutureless implantation of AV prosthesis may reduce myocardial ischemic and ECC time significantly. The authors report on their preliminary results with the first implants of the 3F-Enable sutureless AV prosthesis. MATERIAL AND METHODS: The 3F-Enable prosthesis was implanted in five patients. Prostheses sizes were 27 mm (n = 3), 23 mm (n = 1), and 21 mm (n = 1), respectively. Intraoperatively, at patient's discharge as well as 3 and 6 months postoperatively, the AV prosthesis was evaluated by echocardiography. RESULTS: ECC time was 87 +/- 36 min (range 49-141 min), myocardial ischemic time 55 +/- 27 min (range 32-97 min), and AV implant time 184 +/- 195 s (range 10-420 s). The latest postoperative echo (5.2 +/- 1 months postoperatively) revealed a fully competent AV in three patients, in two patient paravalvular leakage was detected at the severity of an aortic regurgitation (AR) II degrees , and AR II degrees -III degrees , respectively. The mean pressure gradients were 5.8 +/- 1.3 mmHg (range 4.2-7.1 mmHg), valve orifice area was 3.2 +/- 0.4 cm2 (range 2.6-3.6 cm2). CONCLUSION: The first clinical results of the 3F-Enable sutureless AV prosthesis are feasible; however, a paravalvular leakage was detected in two patients (40%). Thus, device and procedural enhancements are required to assure positioning and anchoring of the prosthesis.


Assuntos
Bioprótese , Ponte Cardiopulmonar , Próteses Valvulares Cardíacas , Idoso , Insuficiência da Valva Aórtica/diagnóstico por imagem , Insuficiência da Valva Aórtica/prevenção & controle , Ecocardiografia Transesofagiana , Feminino , Seguimentos , Humanos , Complicações Intraoperatórias/diagnóstico por imagem , Complicações Intraoperatórias/prevenção & controle , Masculino , Isquemia Miocárdica/diagnóstico por imagem , Isquemia Miocárdica/prevenção & controle , Complicações Pós-Operatórias/diagnóstico por imagem , Complicações Pós-Operatórias/prevenção & controle , Desenho de Prótese , Ajuste de Prótese , Técnicas de Sutura
20.
Herz ; 31(5): 434-42, 2006 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-16944063

RESUMO

One of the main issues in complex thoracic aortic disease, requiring the replacement of the ascending aorta, the entire aortic arch and the descending aorta, is the vast amount of surgery necessary to cure the patient. Though one-stage repair is feasible by a clamshell thoracotomy, the associated surgical trauma and perioperative morbidity limit this approach to younger patients only. Classic surgical repair consist of a two-stage strategy, whereby, in the first step, the ascending aorta and the aortic arch are replaced via a midline sternotomy. In the second step, via a lateral thoracotomy, the descending aorta is replaced. The two stages may sum up to a mortality of 20%; furthermore, the waiting period between the stages is associated with a mortality rate of 10% of its own. Additionally, the two-stage strategy has an inherent limitation, due to the comorbidity and advanced age of the majority of patients. Therefore, the second stage cannot be offered to up to 30% of patients. New developments and improvements in aortic surgery were introduced to overcome these shortcomings and to simplify the surgical repair. The "elephant trunk" principle, introduced by Borst et al. in 1983, was an important step to facilitate surgical repair, but still required the second step. With the introduction of endovascular repair of thoracic aortic disease with stent grafts implanted retrograde via the femoral artery, new therapeutic concepts emerged. In the late 1990s, two Japanese groups reported first trials to stabilize the free-floating "elephant trunk" prosthesis by implantation of nitinol stent grafts into the vascular graft. The applied devices were purely custom-made and nonstandardized. The availability of industrially made and CE-marked stent-graft devices raised the possibility to apply them in open aortic arch surgery. The experience with stent-graft devices implanted antegrade into the descending aorta (Medtronic Talent) was reported first by the Essen and the Vienna group. The experience gained with these devices revealed the limitations of the devices designed for pure retrograde aortic delivery. This required a complete redesign and new construction of the stent graft itself as well as the introducer system. In a preliminary series of 14 patients the required stent-graft properties were presented in detail and resulted in the first industrially manufactured standardized and CE-marked Hybrid stent graft (Essen 1 prosthesis, E-vita Open, Jotec), especially made for antegrade open stent grafting of the descending aorta. This device consists of a stent graft with an integrated Dacron vascular prosthesis, enabling for direct and continuous aortic arch replacement after stent grafting of the descending aorta. From 01/2005 to 03/2006, this hybrid prosthesis was implanted in 16 patients (one aneurysm and 15 aortic dissections). In all cases, the underlying pathology within the thoracic aspect of the aorta could be excluded in a one-stage approach. In case of aortic dissection, thrombosis of the false lumen was detectable by transesophageal echocardiography already at the end of surgery. Though long-term results using this new method are not yet available, the initial promising results postoperatively are encouraging toward true one-stage repair by combining classic aortic surgery with open antegrade stent grafting utilizing the newly designed hybrid prosthesis. While surgical trauma is markedly reduced, this treatment option can be offered to elderly patients as well.


Assuntos
Aorta Torácica/cirurgia , Doenças da Aorta/cirurgia , Adulto , Idoso , Angioplastia com Balão/instrumentação , Aneurisma da Aorta Torácica/mortalidade , Aneurisma da Aorta Torácica/cirurgia , Doenças da Aorta/mortalidade , Ruptura Aórtica/cirurgia , Implante de Prótese Vascular/instrumentação , Terapia Combinada , Comorbidade , Feminino , Implante de Prótese de Valva Cardíaca/instrumentação , Máquina Coração-Pulmão , Mortalidade Hospitalar , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/mortalidade , Desenho de Prótese , Fatores de Risco , Stents , Taxa de Sobrevida , Toracotomia/instrumentação
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...