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1.
Thorac Cardiovasc Surg ; 57(1): 22-4, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19169992

RESUMO

BACKGROUND: The aim of this study was to explore patients' needs and changes to these needs during a hospital stay for coronary artery bypass graft (CABG) surgery. METHODS: 70 patients (60 males; mean age = 64.1; SD = 8.9) reported their needs two days before and ten days after CABG surgery using a specifically developed 15-item questionnaire. Student's T-test was used to detect significant differences. RESULTS: Before CABG, patients rated the need for "preparation for surgery", and after CABG the need for "information about the correct handling of drugs", as the most important. The rating of "information about the correct handling of drugs" showed a significant increase after CABG surgery ( T(69) = - 3.46; P < 0.001) and the need for a "letter with the latest scientific information on heart disease" was significantly reduced during this period ( T(69) = 2.07; P = 0.04). CONCLUSIONS: The results indicate that preparation for surgery should be conducted very carefully without time pressure. Patients should receive more detailed information on prescribed drugs.


Assuntos
Ponte de Artéria Coronária , Unidades de Cuidados Coronarianos , Hospitalização , Pacientes Internados , Avaliação das Necessidades , Avaliação de Processos e Resultados em Cuidados de Saúde , Idoso , Fármacos Cardiovasculares/uso terapêutico , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Cuidados Pós-Operatórios , Cuidados Pré-Operatórios , Inquéritos e Questionários , Fatores de Tempo , Resultado do Tratamento
2.
Rehabilitation (Stuttg) ; 47(4): 219-25, 2008 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-18704871

RESUMO

PURPOSE: An important rehabilitation aim following coronary artery bypass graft (CABG) surgery is to modify cardiovascular risk factors positively. Among the most potent possibilities for improvement of these factors is a lifestyle change in terms of increasing sports exercise, changing diet patterns, stress reduction, etc. An indispensable condition for these changes is the motivation to implement the necessary changes. In our working group a patient education programme was developed aimed at enhancing the motivation for lifestyle change, which was already applied in a cardiac surgery hospital. In evaluating the programme, we could observe that various cognitive factors of motivation for lifestyle change had dropped in untreated patients and risen in patients participating in the programme. Based on these preliminary findings we examined the motivation for lifestyle change one year after CABG surgery. METHOD: Each patient was evaluated for his/her value in motivation for lifestyle change using a 30-item questionnaire which measures the six factors Vulnerability, Intention, Social Expectations, Outcome Expectation, Self-Efficacy Expectation, and Perceived Severity two days before CABG surgery as well as ten days and one year after CABG surgery. Between January and May 2002 patients in usual care were investigated as control group (n=70). From January to May 2003, n=70 patients had the opportunity to take part in a comprehensive patient education programme that was provided by a specifically trained psychologist. Data from 108 patients could be evaluated one year after CABG surgery (response rate=77.1%). The programme had comprised individualized units, as well as a group lecture. If partners were available they were included in the process. RESULTS: One year after CABG surgery no significant differences between the control group and the intervention group could be found. CONCLUSION: The positive effects of the patient education programme measured ten days after surgery were found to have vanished one year after the operation. A possible reason is the short duration of the programme. Long-term, structured aftercare programmes should help stabilize the positive effects obtained in the short term.


Assuntos
Ponte de Artéria Coronária/reabilitação , Doença das Coronárias/reabilitação , Exercício Físico , Comportamentos Relacionados com a Saúde , Estilo de Vida , Motivação , Infarto do Miocárdio/reabilitação , Educação de Pacientes como Assunto , Idoso , Estudos de Coortes , Doença das Coronárias/prevenção & controle , Reestenose Coronária/prevenção & controle , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/prevenção & controle , Cooperação do Paciente , Estudos Prospectivos , Prevenção Secundária , Veias/transplante
3.
Thorac Cardiovasc Surg ; 56(4): 200-4, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18481237

RESUMO

BACKGROUND: Different primary treatment modalities have been utilized to treat poststernotomy mediastinitis (PM) following cardiac surgery. METHODS: A literature survey using the key phrases "treatment of deep sternal wound infection" and "poststernotomy-mediastinitis" was performed. Furthermore, a questionnaire regarding the primary treatment of PM was distributed to all 79 German heart surgery centers. RESULTS: The review of the literature shows that the current understanding is based purely on retrospective studies, not on evidence-based medicine. All 79 German heart centers replied to the questionnaire. Vacuum-assisted closure therapy (V. A. C.(R)) is used in 28/79 (35 %) heart centers as the "first-line" treatment, 22/79 (28 %) perform primary reclosure in conjunction with a double-tube irrigation/suction system, and in 29/79 (37 %) German heart centers both treatment options were used according to the intraoperative conditions. CONCLUSIONS: As a primary treatment for PM two treatment modalities are currently in use: primary reclosure coupled with a double-tube suction/irrigation system versus V. A. C.(R) therapy. Since prospective randomized studies have not yet been performed, controlled clinical trials comparing both treatment modalities are pivotal to define the evidence for patients presenting with PM.


Assuntos
Pesquisas sobre Atenção à Saúde , Mediastinite/cirurgia , Tratamento de Ferimentos com Pressão Negativa , Complicações Pós-Operatórias/cirurgia , Esterno/cirurgia , Sucção , Humanos , Mediastinite/classificação , Irrigação Terapêutica , Resultado do Tratamento
4.
Int J Artif Organs ; 31(3): 279-81, 2008 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-18373323

RESUMO

Our 18-year old female patient suffered from microscopic polyangiitis. After invasive diagnostics, a diffuse alveolar hemorrhage occurred, leading to acute lung failure. In spite of differential ventilation, respiratory insufficiency and lactate-acidosis increased quickly. Due to the massive hemorrhage, a pumpless extracorporeal lung assist was implanted and, after six hours, low-dose heparinization was started. In response to this therapy, hypercapnia and acidosis improved quickly and were completely eliminated within 24 hours. Simultaneously, treatment with prednisolon and cyclophosphamid was started. After 7 days, the patient's conditions allowed weaning from the pumpless extracorporeal lung assist and after 9 days she was extubated. In conclusion, the pumpless lung assist was shown to be a very practical option to treat the most serious forms of hypercapnia, especially for patients disposed to diffuse bleeding.


Assuntos
Circulação Extracorpórea , Hemorragia/terapia , Pneumopatias/reabilitação , Alvéolos Pulmonares , Síndrome do Desconforto Respiratório/terapia , Adolescente , Feminino , Humanos , Hipercapnia/terapia , Síndrome do Desconforto Respiratório/etiologia
5.
Thorac Cardiovasc Surg ; 55(5): 288-92, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17629857

RESUMO

BACKGROUND: Health-related quality of life (HRQL) is one of the most important outcome criteria of nearly all medical procedures. Only the patients themselves can provide detailed and true information on their quality of life. The measurement of HRQL can be used to assess the expected benefit of coronary artery bypass graft (CABG) surgery. METHODS: 142 patients were included in the study and completed the German version of the SF-36 health survey questionnaire (SF-36) [1]. The SF-36 was administered 2 days before, 10 days and one year after CABG surgery. Additionally, data produced by our patients was compared to the summary data of three populations displayed in the SF-36 handbook (standard population, patients with myocardial infarction and with angina pectoris). RESULTS: While HRQL is slightly reduced 10 days after CABG surgery, the improvement one year later is highly significant compared to two days before CABG surgery. One year after CABG surgery, the HRQL of our patients is much closer to that of the standard population of the SF-36. CONCLUSIONS: According to HRQL, patients benefit from CABG surgery.


Assuntos
Ponte de Artéria Coronária , Indicadores Básicos de Saúde , Qualidade de Vida , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Fatores de Tempo
6.
Thorac Cardiovasc Surg ; 54(6): 408-13, 2006 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16967378

RESUMO

BACKGROUND: Sternal instability and mediastinitis are rare but serious complications following cardiac surgery with median sternotomy. METHODS: This study presents the results of a questionnaire, which was sent to all 79 German surgical heart centers. The conventional sternal closure technique, the parameters considered to be risk factors for sternal instability, and the surgical strategy in the presence of risk factors were determined. In addition, a literature research with the key words "sternal closure technique" and "sternal dehiscence" was performed. RESULTS: Conventional closure of primary sternotomy is done using many different methods, most often with surgical steel sutures (87 %) passed trans/peristernally (64 %). An osteoporotic or fractured sternum (70 x), and obesity (31 x) were the most frequently cited risk factors. The preferred osteosynthetic procedure for patients with an increased risk for sternal instability was the method of Robicsek (48 x). CONCLUSION: There is no uniform osteosynthetic method for primary sternal closure and there is substantial variation in the perception of risk factors for sternal instability and possible surgical consequences among the surgical heart centers in Germany.


Assuntos
Procedimentos Cirúrgicos Cardíacos/métodos , Mediastinite/prevenção & controle , Padrões de Prática Médica , Esterno/cirurgia , Deiscência da Ferida Operatória/prevenção & controle , Técnicas de Sutura , Fenômenos Biomecânicos , Institutos de Cardiologia , Alemanha , Pesquisas sobre Atenção à Saúde , Humanos , Fatores de Risco , Dispositivos de Fixação Cirúrgica
7.
Rehabilitation (Stuttg) ; 45(2): 95-101, 2006 Apr.
Artigo em Alemão | MEDLINE | ID: mdl-16575715

RESUMO

BACKGROUND: The purpose of this study was to evaluate the influence of an in-hospital (stage I of rehabilitation) individualized motivation programme for life-style change on the cardiovascular risk factors of patients after coronary artery bypass grafting (CABG). METHODS: 142 consecutive patients undergoing CABG because of coronary heart disease were divided into two groups. Group I received the usual care; Group II received the intervention (individual motivation programme). Medical variables concerning all cardiovascular risk factors and the current medication plan were evaluated on admission and one year after surgery. RESULTS: After 12 months significant reductions in systolic blood pressure (p = 0.002), LDL-cholesterol (p = 0.023) and triglyceride (p = 0.046) were found in the intervention group on comparison of the two groups. The HDL cholesterol improved in the intervention group and decreased slightly in the control group. Both groups showed an improvement in diastolic blood pressure, Body Mass Index, blood cholesterol and blood glucose values. The intervention did not show a significant influence on smoking and medication habits. CONCLUSION: An individualized motivation programme starting in the acute hospital may positively influence cardiovascular risk factors with ongoing success.


Assuntos
Ponte de Artéria Coronária/reabilitação , Doença das Coronárias/reabilitação , Estilo de Vida , Motivação , Idoso , Glicemia/metabolismo , Pressão Sanguínea , Índice de Massa Corporal , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Doença das Coronárias/sangue , Doença das Coronárias/prevenção & controle , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Admissão do Paciente , Equipe de Assistência ao Paciente , Educação de Pacientes como Assunto , Fatores de Risco , Prevenção Secundária , Abandono do Hábito de Fumar , Triglicerídeos/sangue
8.
Eur Surg Res ; 35(1): 6-13, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12566781

RESUMO

Chronic cardiac transplant vasculopathy still remains the major cause of late graft failure after the 1st postoperative year, with iNOS playing a central role in the progression of this disease. Since VASP, a recently identified microfilament-associated protein in smooth muscle cells, endothelial cells, and platelets, is phosphorylated by cyclic nucleotide dependent protein kinases, changing amounts of NO-producing mononuclear infiltration cells during cardiac rejection are supposed to change platelet VASP phosphorylation patterns. We investigated whether platelet VASP Ser(157) phosphorylation (VASP shift) after coronary passage of rat cardiac allografts correlates with graft infiltration. The Lew-F344 heterotopic rat cardiac transplantation model was used. Native hearts and grafts were harvested 3-150 days after transplantation and were used for Langendorff perfusion. The platelet VASP shift after native heart and graft perfusion was identified. Additional iNOS stimulation and iNOS inhibition were achieved pharmacologically. Immunohistology revealed graft mononuclear infiltration. Platelet VASP Ser(157) and Ser(239) phosphorylation significantly increased after coronary passage of native hearts and grafts (p < 0.01). Though platelet VASP Ser(157) phosphorylation failed to directly express graft infiltration, we showed a significant correlation between changes of platelet VASP shift and extent of grafts' mononuclear infiltration after competitive iNOS inhibition (p < 0.01). The platelet VASP shift is modified during coronary perfusion, and this modification correlates with mononuclear infiltration in the graft. This emphasizes the influence of mononuclear infiltration cells on microfilamental structures of the cytoskeleton in adjacent cells.


Assuntos
Plaquetas/metabolismo , Moléculas de Adesão Celular/metabolismo , Transplante de Coração , Monócitos/fisiologia , Fosfoproteínas/metabolismo , Transplante Heterotópico , Animais , Circulação Coronária , Inibidores Enzimáticos/farmacologia , Humanos , Imuno-Histoquímica , Proteínas dos Microfilamentos , Monócitos/patologia , Miocárdio/enzimologia , Miocárdio/patologia , Óxido Nítrico Sintase/antagonistas & inibidores , Óxido Nítrico Sintase Tipo II , Nitroarginina/farmacologia , Fosforilação , Ratos , Ratos Endogâmicos F344 , Ratos Endogâmicos Lew
9.
ASAIO J ; 47(5): 533-6, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11575832

RESUMO

Pump induced hemolysis is presently evaluated by measuring plasma free hemoglobin (fHb). However, this method has disadvantages because quantification of fHb depends on hematocrit (HCT) and hemoglobin (Hb) levels. The aim of this work was to devise a hemoglobin independent method, capable of quantifying cell trauma directly by measuring the number of red blood cell (RBC) fragments. Whole blood flow cytometry was used to quantify circulating RBC fragments derived from a roller pump (Sarns, Inc. Model 2 M 6,002) and a centrifugal pump (Gyro C1E3, Kyocera Corp.). The pumps were tested in a mock circuit for 2 hr (5 L/min flow against 100 mm Hg pressure head). Red blood cell fragments were quantified by a phycoerythrin (PE) labeled glycophorin A antibody specific for erythrocytes. Red blood cell fragments were smaller than the intact RBC population and overlapped in size with the platelet population (based on forward- and side-light scattering measurements). For the roller pump, the values for RBC fragments increased from 1,090 +/- 260/microl at 0 min to 14,880 +/- 5,900/microl after 120 min. In contrast, using the centrifugal pump, there was little increase in RBC fragments (from 730 +/- 270/microl at 0 min to 1,400 +/- 840/microl after 120 min). Flow cytometry can be used for the rapid, sensitive, hemoglobin independent evaluation of pump induced RBC trauma.


Assuntos
Eritrócitos , Circulação Extracorpórea/efeitos adversos , Citometria de Fluxo/métodos , Hemólise , Hemoglobinas/análise , Humanos , Técnicas In Vitro , L-Lactato Desidrogenase/sangue
10.
Immunopharmacology ; 43(2-3): 141-4, 1999 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-10596845

RESUMO

Fat emulsions can cause changes in blood-clotting and fibrinolysis. The aim of this study was to examine the relation between the use of the short-acting hypnotic propofol and alteration of the blood clotting system. In a double-blind randomized study, 36 patients with an aortocoronary bypass operation were given either midazolam/fentanyl or propofol/alfentanil. Eleven blood samples were taken at fixed times pre-, intra- and postoperatively to determine changes caused by the anesthetic agents on the hemostaseologic parameters during the whole operation. Perioperative blood pressures of both groups were measured at seven fixed points. From the beginning of the extracorporeal circulation (ECC) to the end of the operation, the measured values of the factor XIIa- and kallikrein-like activity in the propofol group were significantly higher than those of the midazolam group. Also the values of the kallikrein inhibition capacity and the indicators of fibrinolysis (t-PA and D-dimers) suggest a stronger activation of the contact phase at the start of the recirculation and as a result of it a stronger fibrinolysis within the propofol group. Besides, the hypotensive side-effect in the propofol group was evident in contrast to the midazolam group. With this investigation, a correlation between the application of propofol/alfentanil, contact phase activation with activation of the kallikrein-kinin-bradykinin system and the observed hypotension can be set up.


Assuntos
Anestésicos/farmacologia , Coagulação Sanguínea/efeitos dos fármacos , Propofol/farmacologia , Adulto , Idoso , Alfentanil/administração & dosagem , Alfentanil/farmacologia , Anestésicos/administração & dosagem , Pressão Sanguínea/efeitos dos fármacos , Método Duplo-Cego , Feminino , Fentanila/administração & dosagem , Fentanila/farmacologia , Humanos , Sistema Calicreína-Cinina/efeitos dos fármacos , Masculino , Midazolam/administração & dosagem , Midazolam/farmacologia , Pessoa de Meia-Idade , Propofol/administração & dosagem
11.
Cerebrovasc Dis ; 9(5): 265-9, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10473909

RESUMO

Microemboli generated during extracorporeal circulation (ECC) are likely to induce neurological sequelae. This study examines whether the choice of a distinct type of ECC can reduce intracerebral emboli counts. Middle cerebral artery blood flow during coronary artery bypass grafting was monitored continuously by transcranial Doppler ultrasound in 45 patients. The ECC systems used were a roller pump (n = 16), a centrifugal pump (n = 18) and a combination of centrifugal pump and heparin-coated ECC system (n = 11). Patients' characteristics as well as surgical and anesthesiological procedure did not differ between the groups. Total counts did not differ significantly between the three groups. Intraoperative events in individual patients may lead to massive embolus generation overcoming positive properties of a distinct ECC system.


Assuntos
Arteriopatias Oclusivas/etiologia , Endarterectomia das Carótidas/efeitos adversos , Embolia Intracraniana/complicações , Idoso , Anestesia Geral , Arteriopatias Oclusivas/diagnóstico por imagem , Eletroencefalografia , Feminino , Humanos , Embolia Intracraniana/diagnóstico por imagem , Pessoa de Meia-Idade , Artéria Cerebral Média , Monitorização Intraoperatória , Ultrassonografia Doppler Transcraniana
12.
Thorac Cardiovasc Surg ; 47(3): 166-9, 1999 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10443518

RESUMO

BACKGROUND: Intraoperative thromboembolism and the systemic inflammatory reaction are thought to play a role in causing cerebral dysfunction following cardiopulmonary bypass (CPB). Increased levels of S100B, an astroglial protein, have been linked to neuropsychological deficits after CPB. The present study investigated whether S100B release correlates with intraoperative embolus formation, thrombin formation, or the release of inflammatory parameters. METHODS: 40 patients undergoing coronary artery bypass grafting were included. Blood samples were taken before, during, and after CPB, and levels of S100B, thrombin-antithrombin complex (TAT), complement C5a, and interleukin 8 were analysed. Embolus formation was assessed by Doppler ultrasound at the arterial line of CPB. RESULTS: The release of S100B correlated with embolus count (r = 0.42; p = 0.009) and TAT formation (r = 0.71; p = 0.0001). The correlation of S100B with interleukin 8 (r = 0.58; p = 0.0001) was due to the dependence of both parameters on bypass time (r = 0.29; p = 0.075, partial correlation). A correlation of S100B with C5a formation could not be observed. CONCLUSIONS: S100B release is related to embolus and thrombin formation during CPB, indicating that thrombofibrinous embolism is involved in perioperative brain damage. Inflammatory parameters (i.e. interleukin 8 and C5a) seem to have no influence on S100B release.


Assuntos
Proteínas de Ligação ao Cálcio/sangue , Ponte Cardiopulmonar , Ponte de Artéria Coronária , Complicações Intraoperatórias/sangue , Fatores de Crescimento Neural/sangue , Proteínas S100 , Tromboembolia/sangue , Dano Encefálico Crônico/sangue , Dano Encefálico Crônico/diagnóstico , Feminino , Humanos , Embolia e Trombose Intracraniana/sangue , Embolia e Trombose Intracraniana/diagnóstico , Complicações Intraoperatórias/diagnóstico , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Subunidade beta da Proteína Ligante de Cálcio S100 , Síndrome de Resposta Inflamatória Sistêmica/sangue , Síndrome de Resposta Inflamatória Sistêmica/diagnóstico , Tromboembolia/diagnóstico
13.
Ann Thorac Surg ; 68(1): 58-62, 1999 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-10421115

RESUMO

BACKGROUND: Cardiopulmonary bypass causes a systemic inflammatory response and impaired hemostasis. We investigated whether intraoperative blood salvage with the cardiotomy suction contributes to these alterations. Furthermore, an alternative autotransfusion device (Haemonetics cell-saving device) was examined. METHODS: In 10 patients, interleukin-6, interleukin-8, tumor necrosis factor-alpha, thrombin-antithrombin complex, plasmin-antiplasmin complex, free hemoglobin, and the percentage of CD62+ thrombocytes were determined in the systemic circulation during cardiopulmonary bypass, in the cardiotomy suction tube, and in the blood from the cell-saving device. Additionally, bacterial contamination was examined. RESULTS: Median levels of interleukin-6 (52 versus 10 microg/L; p = 0.005), interleukin-8 (26 versus 20 microg/L; p = 0.017), tumor necrosis factor-alpha (24 versus 1 microg/L; p = 0.005), thrombin-antithrombin complex (113 versus 43 microg/L; p = 0.005), plasmin-antiplasmin complex (566 versus 489 microg/L; p = 0.022), and free hemoglobin (61 versus 30 mg/dL; p = 0.005) were higher in the cardiotomy suction tube compared with the systemic circulation. After processing the blood from the cell-saving device, interleukin-8, thrombin-antithrombin complex, and free hemoglobin remained above reference range, and in 90% of the cases bacterial contamination was observed. CONCLUSIONS: Cardiotomy suction additionally contributes to the release of proinflammatory cytokines, activation of coagulation, and hemolysis. Because blood salvage with a Haemonetics cell-saving device led to normalization of some, but not all, parameters and bacterial contamination was common, the alternative use seems at least questionable.


Assuntos
Transfusão de Sangue Autóloga/instrumentação , Hemostasia , Mediadores da Inflamação/sangue , alfa 2-Antiplasmina , Adulto , Idoso , Antifibrinolíticos/análise , Antitrombina III/análise , Valva Aórtica/cirurgia , Bactérias/crescimento & desenvolvimento , Sangue/microbiologia , Transfusão de Sangue Autóloga/efeitos adversos , Ponte Cardiopulmonar/efeitos adversos , Fibrinolisina/análise , Hematócrito , Humanos , Interleucina-6/sangue , Interleucina-8/sangue , Período Intraoperatório , Contagem de Leucócitos , Pessoa de Meia-Idade , Peptídeo Hidrolases/análise , Contagem de Plaquetas , Sucção/instrumentação , Fator de Necrose Tumoral alfa/análise
14.
J Cardiovasc Surg (Torino) ; 40(1): 71-6, 1999 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-10221390

RESUMO

BACKGROUND: In the present study the influence of different storage solutions on endothelial integrity or damage was investigated with direct methods particularly with transmission electron microscopy (TEM), scanning electron microscopy (SEM) and immunohistochemistry. METHODS: Saphenous vein segments of 10 cm in length were taken surgically from 6 male CABG-patients (aged 60-70) under standardized conditions. Each vein segment was cut into rings, which were incubated at room temperature for 45 minutes in different storage solutions, particularly in 0.9% sodium chloride solution and in buffered solution (M 199) with 5% human serum albumin respectively. Then, the vein segments were fixed in 3.5% glutaraldehyde and prepared for scanning and transmission electron microscopy to evaluate the endothelial damage. In addition, immunohistochemical staining (CD34, PECAM and Factor VIII) was performed. RESULTS: When using 0.9% sodium chloride solution, the SEM-examination revealed that 55% of the cell population was destroyed. In comparison to these findings only 26% of the endothelial cell population was damaged when the venous segment was stored in buffered solution with 5% albumin (p<0.01). In immunohistochemistry (CD34, PECAM, Factor VIII) these findings were supported. CONCLUSIONS: This study demonstrates the importance of storage solutions in regard to endothelial integrity. For best preservation of endothelium it is necessary to modify conventional storage methods. So, storage in buffered solution with albumin has shown much better endothelial cell preservation compared with physiological saline which might reduce the obliteration rate of CABG in future.


Assuntos
Ponte de Artéria Coronária , Endotélio Vascular/ultraestrutura , Soluções para Preservação de Órgãos , Veia Safena/transplante , Preservação de Tecido , Idoso , Albuminas , Soluções Tampão , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Veia Safena/patologia , Veia Safena/ultraestrutura , Cloreto de Sódio
15.
Zentralbl Chir ; 124 Suppl 4: 23-7, 1999.
Artigo em Alemão | MEDLINE | ID: mdl-10670112

RESUMO

Postoperative infections are a dreaded complication in pulmonal surgery. Besides the optimal preparation of the patients and careful operative technique, perioperative antibiotic prophylaxis represents an important factor in avoiding infectious consequences. Owing particularly to the high proportion of patients with malignant, consumptious illnesses in thorax surgery, immune deficiencies must be reckoned with in this group of patients. The spectrum of germs to be expected within the framework of pulmonal surgery determines to some extent which antibiotic shall be used. We have investigated the efficacy of a standardized antibiotic prophylaxis using cefotaxime (Claforan) in 200 pulmonal patients. Pleural empyema is a rare, but nonetheless important infectious illness, as a consequence of pulmonal operations, or also following pneumonia. Whilst the early stages of an empyema can often be successfully treated using only drainage treatment, chronic empyema usually requires a thoracotomy with empyema dissection and excortication, as well as subsequent irrigation-suction drainage treatment. In spite of specific surgical sanitation and irrigation-suction drainage treatment, therapy is often complicated by persistent germs in the thoracic cavity. Instillation therapy with taurolidine can lead to faster healing of the infection in such cases. Purulent mediastinitis is an extremely rare illness, but dreaded owing to its high mortality. The causes of the illness lie in injuries of the trachea, of the bronchial tubes, and of the oesophagus. With the introduction of medial sternotomy as operative entry, mediastinitis as a postoperative complication has increased noticeably in frequency. Mediastinitis occurs as a descending infection as a consequence of odontogenic affections. Owing to frequently late diagnosis, infection is usually advanced, so that simple drainage treatment of the mediastinum no longer suffices in many cases. We introduce our concept of treatment using our own patient collective.


Assuntos
Antibacterianos/uso terapêutico , Cefotaxima/uso terapêutico , Cefalosporinas/uso terapêutico , Pneumopatias/cirurgia , Pneumonectomia/efeitos adversos , Infecção da Ferida Cirúrgica/prevenção & controle , Cefalosporinas/farmacologia , Humanos , Complicações Pós-Operatórias , Infecção da Ferida Cirúrgica/tratamento farmacológico
16.
Eur J Cardiothorac Surg ; 14(4): 360-6, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9845139

RESUMO

OBJECTIVE: As Aspirin (ASA) has proven efficacy in preventing patients with CAD from complications related to cardiovascular diseases, most patients scheduled for CABG are treated with ASA therapy. Consequently, impaired hemostasis is a problem in the management of CABG patients. Clinical studies have shown that Aprotinin can reduce bleeding and the use of blood products by 50% in patients both with and without pre-operative ASA therapy. Concerning the combined effect of peri-operative low-dose ASA therapy and intra-operative high-dose Aprotinin therapy, the gathering of additional and prospective data seemed to be necessary. METHODS: We conducted a double-blind two-centre randomised three-arm study in patients with elective primary CABG surgery. Three groups have been tested, comprising 119 patients in total (group A: ASA + Aprotinin, group B: placebo + Aprotinin, group C: placebo + placebo) to investigate a possible reduction of bleeding in Aprotinin treated patients. For all patients, thromboxane levels were used to identify ASA or placebo treatment. RESULTS: The post-operative blood loss is significantly reduced by 21% after Trasylol administration (B vs. C; P = 0.009). The unexpected result of this study has been that the pre-treatment with ASA led to a further reduction of 18% (A vs. C; P < 0.0001). The difference between the two Aprotinin groups (A and B) is significant (P = 0. 01) in favour of ASA pre-treatment. Myocardial infarction (MI) had been diagnosed at levels of 1.8% in total (2/113), 2.6% (1/38) in group B and 3.2% (1/31 ) in group C. An additional blinded evaluation of ECG, enzyme levels and clinical status revealed 'definite, probable and possible' MIs of 5% in group A, compared to 16% in group B and 13% in group C, thus providing no evidence for a higher risk of infarction by Aprotinin treatment. When comparing the ASA group to non-ASA pre-treatment, a strong trend towards a reduction in MI rate becomes obvious, from 15% to 5% in favour of the ASA pre-treatment (P = 0.08). Concerning other peri-operative complications, no statistical difference between the groups could be detected. CONCLUSIONS: A reduction in post-operative blood loss in primary elective CABG surgery with intra-operative Aprotinin treatment could be confirmed. A low-dose ASA treatment combined with a high-dose aprotinin administration during surgery not only neutralized a potentially higher risk of bleeding, but did in fact reduce the post-operative blood loss. The protective effect of ASA on peri-operative MI has been evident through a reduction of MI rate in ASA treated patients.


Assuntos
Aprotinina/uso terapêutico , Aspirina/uso terapêutico , Perda Sanguínea Cirúrgica/prevenção & controle , Ponte de Artéria Coronária , Fibrinolíticos/uso terapêutico , Hemostáticos/uso terapêutico , Hemorragia Pós-Operatória/prevenção & controle , Aprotinina/administração & dosagem , Aprotinina/efeitos adversos , Aspirina/administração & dosagem , Creatina Quinase/sangue , Método Duplo-Cego , Eletrocardiografia , Feminino , Fibrinolíticos/administração & dosagem , Hemostáticos/administração & dosagem , Hemostáticos/efeitos adversos , Humanos , Cuidados Intraoperatórios , Isoenzimas , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Infarto do Miocárdio/etiologia , Infarto do Miocárdio/prevenção & controle , Placebos , Estudos Prospectivos , Reprodutibilidade dos Testes , Fatores de Risco , Tromboxanos/sangue
17.
Heart Vessels ; 13(3): 147-51, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-10328185

RESUMO

The application of a centrifugal pump might lead to a reduced release of tissue factor (TF) due to less blood cell damage. This could result in a decrease in activation of the extrinsic pathway of coagulation and embolus formation. In the present study, 60 patients undergoing coronary artery bypass grafting were randomly assigned to a centrifugal or a roller pump. Plasma concentrations of TF, thrombin-antithrombin complex (TAT), and prothrombin fragments F1 + 2 were investigated before, during, and after cardiopulmonary bypass (CPB). Embolus detection was performed at the arterial line of CPB and transcranially by Doppler ultrasound. The centrifugal pump group revealed a lower TF release (area under the curve during CPB) when compared with the roller pump group [5661 (696-10359) vs 12681 (6383-17538) microg x min/l; median (lower - upper quartiles); P = 0.009]. In contrast, TAT and F1 + 2 formation did not differ between the groups, and neither did the total embolus count of both Doppler systems. Embolus counts did not correlate with TAT or F1 + 2 formation. In conclusion, the reduction in TF release by the application of a centrifugal pump seems to have little consequence on total thrombin formation. Since the applied Doppler systems seem to detect mainly microbubbles, conclusions regarding differences between the two pumps in the formation of thrombofibrinous clots cannot be drawn.


Assuntos
Ponte Cardiopulmonar/instrumentação , Coração Auxiliar , Tromboplastina/metabolismo , Centrifugação , Ponte de Artéria Coronária/métodos , Doença das Coronárias/sangue , Doença das Coronárias/cirurgia , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Embolia e Trombose Intracraniana/sangue , Embolia e Trombose Intracraniana/diagnóstico por imagem , Embolia e Trombose Intracraniana/prevenção & controle , Complicações Intraoperatórias/sangue , Complicações Intraoperatórias/diagnóstico por imagem , Complicações Intraoperatórias/prevenção & controle , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento , Ultrassonografia Doppler Transcraniana
18.
Thorac Cardiovasc Surg ; 45(5): 217-23, 1997 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9402660

RESUMO

Cardiopulmonary bypass (CPB) is known to induce an inflammatory response. Previous studies reported an impairment of the cellular immune response with activation of neutrophils and changes in lymphocyte subpopulations. The objective of the present study was to investigate the effect of CPB on leukocyte activation in vivo. In 27 patients undergoing coronary artery bypass grafting, the quantitative and the qualitative response of leukocyte populations to CPB was analysed pre-, intra-, and postoperatively using flow cytometry. A significant increase in leukocyte counts was detected during CPB, resulting in a marked leukocytosis postoperatively. The total number of lymphocytes peaked in the early phase of CPB, followed by a significant decrease, mainly due to a loss in B and cytotoxic T lymphocytes. In contrast, the lymphocytopenia observed 8 h after protamin administration was mainly caused by a drop in the population of helper T lymphocytes. Activation of distinct cell populations could be detected during and following CPB. The results indicate an influence of CPB on the cellular immune system, however an immuno-suppression was detectable only transiently.


Assuntos
Ponte Cardiopulmonar , Imunidade Celular , Ativação Linfocitária , Subpopulações de Linfócitos/imunologia , Idoso , Antígenos CD , Feminino , Citometria de Fluxo , Humanos , Ativação Linfocitária/imunologia , Contagem de Linfócitos , Masculino , Pessoa de Meia-Idade
19.
Pneumologie ; 51(3): 286-90, 1997 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-9173418

RESUMO

Of primary importance in the differential diagnosis of multiple circular foci in the lungs are the lung metastases. This study involves a patient with three circular foci, each of which could have been metastases. They proved, however, to be a rare coincidence of three benign lung affections, namely, an old tuberculoma, a chondrohamartoma, and a seldom encountered pulmonary cryptococcoma. Computerized tomography utilizing the spiral technique was valuable diagnostically, as it led to the discovery of the smallest of the three circular foci in the basodorsal left lower lobe. The form of the cryptococcosis among immunocompetent patients--only rarely localized in our experience--must be included in the differential diagnostical considerations of a circular focus in the lungs. In the event there are multiple circular foci with an unknown primary tumor, surgical intervention with a pathohistological clarification regarding a possible malignancy is absolutely necessary.


Assuntos
Criptococose/complicações , Hamartoma/complicações , Pneumopatias Fúngicas/complicações , Pneumopatias/complicações , Nódulo Pulmonar Solitário/etiologia , Tuberculoma/complicações , Tuberculose Pulmonar/complicações , Criptococose/diagnóstico por imagem , Diagnóstico Diferencial , Hamartoma/diagnóstico por imagem , Humanos , Pneumopatias/diagnóstico por imagem , Pneumopatias Fúngicas/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Nódulo Pulmonar Solitário/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Tuberculoma/diagnóstico por imagem , Tuberculose Pulmonar/diagnóstico por imagem
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