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1.
Tuberk Toraks ; 71(3): 224-235, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37740626

RESUMO

Introduction: Our aim was to investigate the characteristics of patients with preliminary diagnosis of sleep breathing disorder studied in Edirne province, to identify the risk factors and comorbid conditions, to determine the diagnostic distribution of our sleep patients by analyzing the results of polysomnography and PAP titration, and to understand their problems related to treatment compliance and device use. Materials and Methods: Our study retrospectively evaluated the results of 956 patients who had sleep-related complaints in our region and underwent full nocturnal polysomnography and PAP titration with a preliminary diagnosis of sleep breathing disorder. Results: A total of 956 patients were enrolled in the study, of whom 641 (67.1%) were males and 315 (32.9%) were females. Of our patients, 49.7% had severe obstructive sleep apnea (OSA), 18.2% had moderate OSA, 17.9% had mild OSA, 11.4% had REM-dependent OSA, and 8.4% had positionsupine-dependent OSA. Hypertension was the most common comorbid condition in 44% of our patients, and diabetes mellitus in 25%. It was determined that 228 (57.9%) of 394 patients who were recommended to use the PAP device received the device, and 71.5% of these patients could use the device in a compatible manner. Conclusion: Patients with appropriate symptoms can be diagnosed with a high probability of OSA in our region. The fact that a substantial group of patients diagnosed with OSA and recommended to use the PAP device did not receive the device or the proportion of those who could not use the device was high is one of the notable findings of the study.


Assuntos
Hipertensão , Apneia Obstrutiva do Sono , Transtornos do Sono-Vigília , Feminino , Masculino , Humanos , Estudos Retrospectivos , Sono , Polissonografia , Hipertensão/diagnóstico , Hipertensão/epidemiologia , Apneia Obstrutiva do Sono/diagnóstico , Apneia Obstrutiva do Sono/epidemiologia , Apneia Obstrutiva do Sono/terapia
2.
Turk Thorac J ; 19(3): 103-109, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30083399

RESUMO

OBJECTIVES: The objective of the study was to compare the efficacy of an oscillating positive expiratory device and the active cycle of breathing techniques (ACBT) in patients with bronchiectasis. MATERIALS AND METHODS: A home-based study that lasted for 4 weeks was designed to compare the oscillating physiotherapy device Flutter® and the ACBT in 40 patients, who were randomly assigned into two groups containing 20 patients each. The effect of the two methods of physiotherapy on sputum production, pulmonary functions, and the quality of life was compared. RESULTS: The results of the present study indicate that both the methods were associated with a reduced number of patients complaining of cough and fatigue and increased sputum production (p=0.000, p=0.004, and p=0.002, respectively). In addition, statistically significant reductions were determined by the Medical Research Council and Borg Dyspnea scores (p=0.001 and 0.002, respectively). The Flutter® device caused a more significant effect on the perception of dyspnea. Overall, there was an improvement in the physical sub-scale of the Short Form (SF)-36 Quality of Life Questionnaire scores of 36 patients who completed the study (p=0.001). During the physiotherapy period, no changes in pulmonary functions were observed. Exacerbations were recorded in 3 patients in the ACBT group and in 1 patient in the Flutter® group. CONCLUSION: The Flutter® device and ACBT represent effective home-based physiotherapeutic methods. The Flutter® device appears to be more effective with regard to sputum production.

4.
Tuberk Toraks ; 59(3): 248-58, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22087521

RESUMO

Sarcoidosis is an idiopathic granulomatous disease. It usually affects the lung. The diagnosis may be problematic since the known causes of granulomatous inflammation must be excluded. This multicenter study aimed to evaluate the clinical presentations and diagnostic approaches of sarcoidosis. The study protocol was sent via internet, and the participants were asked to send the information (clinical, radiological and diagnostic) on newly diagnosed sarcoidosis cases. 293 patients were enrolled within two years. Pulmonary symptoms were found in 73.3% of the patients, and cough was the most common one (53.2%), followed by dyspnea (40.3%). Constitutional symptoms were occured in half of the patients. The most common one was fatigue (38.6%). The most common physical sign was eritema nodosum (17.1%). The most common chest radiograhical sign was bilateral hilar lymphadenomegaly (78.8%). Staging according to chest X-ray has revealed that most of the patients were in Stage I and Stage II (51.9% and 31.7%, respectively). Sarcoidosis was confirmed histopathologically in 265 (90.4%) patients. Although one-third of the bronchoscopy was revealed normal, mucosal hyperemi (19.8%) and external compression of the bronchial wall (16.8%) were common abnormal findings. The 100% success rate was obtained in mediastinoscopy among the frequently used sampling methods. Transbronchial biopsy was the most frequently used method with 48.8% success rate. Considering sarcoidosis with its most common and also rare findings in the differential diagnosis, organizing the related procedures according to the possibly effected areas, and the expertise of the team would favour multimodality diagnosis.


Assuntos
Doenças Linfáticas/diagnóstico , Sarcoidose Pulmonar/diagnóstico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Biópsia por Agulha , Broncoscopia , Diagnóstico Diferencial , Feminino , Humanos , Doenças Linfáticas/diagnóstico por imagem , Doenças Linfáticas/patologia , Masculino , Mediastinoscopia , Pessoa de Meia-Idade , Radiografia , Sarcoidose Pulmonar/diagnóstico por imagem , Sarcoidose Pulmonar/patologia , Índice de Gravidade de Doença , Turquia , Adulto Jovem
5.
Tumori ; 97(4): 459-65, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21989434

RESUMO

AIMS AND BACKGROUND: In late 2001 at our institution, we started offering induction radiochemotherapy as a treatment option for superior sulcus tumors. Our aim was to evaluate treatment choices and outcome in this patient group treated over the past 7 years at our institution. METHODS: The records of 34 patients were retrospectively reviewed and 33 were assessable for the analysis. RESULTS: Twenty of 28 patients with M0 disease had operable disease. The induction radiochemotherapy for superior sulcus tumors was possible in about two-thirds (14/20) of the cases with operable disease, with only one-third (5/14) of these having undergone surgery. The most common reason for not proceeding to surgery following induction radiochemotherapy was patient refusal (n = 5). The median follow-up of all 33 patients was 17 months. In curatively treated patients with (n = 11) or without surgery (n = 15), the median overall survival time was 26 months (range, 10-26) and 26 months (range, 7-71), respectively ( P = 0.534). Local-regional and/or distant failure developed in 20 of 26 patients treated curatively. In patients treated with the trimodality regimen (n = 5), no local-regional failure was observed, and distant failure occurred in one case. CONCLUSIONS: The trimodality treatment was possible in 25% of cases with operable disease due to the high rate of patient refusal to proceed to surgery following induction radiochemotherapy. No difference in survival was observed between patients treated with surgery and those treated with radiochemotherapy only because of a limited follow-up. So, the benefit of additional surgery is not clear, and a longer follow-up is needed before final conclusions can be drawn.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/terapia , Neoplasias Pulmonares/terapia , Pneumonectomia , Adulto , Idoso , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma Pulmonar de Células não Pequenas/radioterapia , Carcinoma Pulmonar de Células não Pequenas/cirurgia , Quimiorradioterapia Adjuvante , Cisplatino/administração & dosagem , Docetaxel , Etoposídeo/administração & dosagem , Feminino , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/radioterapia , Neoplasias Pulmonares/cirurgia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Pneumonectomia/métodos , Dosagem Radioterapêutica , Indução de Remissão , Estudos Retrospectivos , Análise de Sobrevida , Taxoides/administração & dosagem , Resultado do Tratamento
6.
Respirology ; 16(3): 446-50, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20946338

RESUMO

BACKGROUND AND OBJECTIVE: Extrapulmonary sarcoidosis is common, and is almost always associated with concomitant thoracic involvement. Extrapulmonary manifestations vary on the basis of gender, age at presentation and ethnicity. The aim of this study was to investigate extrapulmonary involvement in patients with sarcoidosis in Turkey. METHODS: This study was conducted by Turkish Thoracic Society Clinical Problems Study Group. New cases of sarcoidosis between 1 June 2004 and 31 May 2006 were recorded on electronic case record forms sent to all potential investigators and information about extrapulmonary involvement was collected. RESULTS: One hundred and nineteen of 293 patients (83 female, 36 male, mean age = 45 ± 12 years) had extrapulmonary involvement in this study (40.6%). The median time to diagnosis was 6 months and this was longer than patients with just thoracic sarcoidosis (P = 0.001). Extrapulmonary symptoms were present in 181 (61.8%) patients, and skin lesions, arthralgia and back pain were the commonest (33.4%, 20.8% and 16.4%, respectively). Incidence of organ involvement was independent of age with the exception of ocular involvement, which was higher in those under the age of 40 years (P = 0.007). CONCLUSIONS: Skin and peripheral lymph node involvement were the most common sites of extrapulmonary involvement and ocular involvement was more common in those under the age of 40 years in patients with sarcoidosis in a Turkish population.


Assuntos
Sarcoidose/epidemiologia , Dermatopatias/epidemiologia , Adulto , Artralgia/diagnóstico , Artralgia/epidemiologia , Dor nas Costas/diagnóstico , Dor nas Costas/epidemiologia , Oftalmopatias/diagnóstico , Oftalmopatias/epidemiologia , Feminino , Humanos , Incidência , Linfonodos , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Prospectivos , Sarcoidose/diagnóstico , Dermatopatias/diagnóstico , Turquia/epidemiologia
7.
Tuberk Toraks ; 58(3): 268-77, 2010.
Artigo em Turco | MEDLINE | ID: mdl-21038137

RESUMO

Massive pulmonary embolism (MPE) is a life threatening disease, thrombolytic treatment could save lives. The aims of this study are to identify early and late mortality rates in patients with MPE who received thrombolytic treatment, and mortality related risk factors. All the hospital records for the MPE patients who received thrombolytic treatment between 1998 and 2006 were retrospectively investigated. Pulmonary embolism was diagnosed through computed tomografi scan and V/P scintigraphy. Due to MPE, 21 women total 41 patients who undergo tPA or streptokinase were included in the study. Kaplan-Meier for the survival analysis and cox regression analysis for determining the mortality related independent risk factors were used. Dying while staying in hospital was accepted as early or hospital mortality, after discharge from hospital as late mortality. Out of 41 patients, 12 of them died while they are hospitalized (hospital mortality; 29%) 6 of them died after they were discharged (late mortality; 21%). The average survival time among discharged patients was 2304 days (95% confidence interval: 1725-2884). Among those patients who took streptokinase or tPA, late or early mortality rates (p> 0.05) and survival time did not show significant difference (p= 0.8908). The presence of arrhythmia [p= 0.01; odds rate (OR): 6.25] and jugular vein distention (JVD) (p= 0.03; OR: 6.25) for hospital mortality and multiple ongoing health problems for the late mortality were identified as the independent risk factors. For the hospital mortality, the presence of JVD or arrhythmia, for prognostic sensitivity, specificity, positive predictive value and negative predictive value were recorded as 75%, 79%, 60% and 88% respectively. In conclusion, the presence of arrhythmia and/or JVD on a patient with MPE is a negative prognostic factor for hospital mortality. The presence of other ongoing health problems influences the survival time of the discharged patients.


Assuntos
Fibrinolíticos/uso terapêutico , Embolia Pulmonar/tratamento farmacológico , Embolia Pulmonar/mortalidade , Terapia Trombolítica , Adulto , Idoso , Feminino , Mortalidade Hospitalar , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco , Estreptoquinase/uso terapêutico , Fatores de Tempo
8.
Am J Med Sci ; 337(4): 241-4, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19365167

RESUMO

BACKGROUND: : Pregnancy-associated plasma protein-A (PAPP-A) has insulin-like growth factor (IGF)-dependent IGFBP-4 protease activity and plays an important role in amplifying local IGF-1 activity in wound healing, vascular repair, and bone remodeling. We postulated that PAPP-A may contribute to the availability and activity of IGFs, which affect lung cancer. Therefore, we determined the levels of PAPP-A in patients with lung cancer and their possible clinical significance. METHODS: : The study population consisted of 83 patients with lung cancer and 33 healthy subjects as a control group. Serum PAPP-A levels were determined using an ultrasensitive enzyme-linked immunosorbent assay. RESULTS: : The serum PAPP-A levels were higher in patients with lung cancer [median (interquartile range) 10.7 (7.6-14.2) ng/mL] than in the control group [6.2 (5.2-9.8) ng/mL, P < 0.001]. There was a significant negative correlation between the serum PAPP-A levels and Karnofsky performance status (r = -0.330; P < 0.001) and a positive correlation with patient age (r = 0.358; P < 0.001). CONCLUSION: : PAPP-A is a proatherosclerotic metalloproteinase that is also thought to be an inflammatory marker. We found that the serum PAPP-A levels increased in patients with lung cancer and postulated that PAPP-A levels may be a prognostic factor in such cases.


Assuntos
Neoplasias Pulmonares/sangue , Proteína Plasmática A Associada à Gravidez/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Gravidez , Estatística como Assunto
9.
Bipolar Disord ; 11(1): 102-6, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19133973

RESUMO

OBJECTIVE: We aimed to assess the resting energy expenditure in bipolar I disorder, manic episode patients. METHOD: Forty-two bipolar I disorder, manic episode patients that were treated in the inpatient psychiatry clinic of Trakya University Hospital and had met the necessary study criteria were included along with 27 controls. DSM-IV criteria and the Bech-Rafaelsen Mania Rating Scale were used to evaluate patients' diagnosis and severity of the manic episodes. The indirect calorimetry device was used to measure resting energy expenditure values. RESULTS: Resting energy expenditure values of manic patients were found to be higher than those of the controls. Controls showed significant correlations between body mass index and resting energy expenditure, but manic patients did not exhibit similar correlations. There was also no relation between Bech-Rafaelsen Mania Rating Scale scores and resting energy expenditure values in manic patients. CONCLUSIONS: We found significantly increased resting energy expenditure values in bipolar I disorder, manic episode patients. These findings suggest a possible clinical use of resting energy expenditure for evaluation of bipolar I disorder manic episode and also suggest resting energy expenditure as a possible biological marker.


Assuntos
Transtorno Bipolar/fisiopatologia , Metabolismo Energético/fisiologia , Descanso/fisiologia , Adulto , Índice de Massa Corporal , Distribuição de Qui-Quadrado , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Escalas de Graduação Psiquiátrica , Troca Gasosa Pulmonar/fisiologia , Estudos Retrospectivos , Adulto Jovem
10.
Rev Port Pneumol ; 14(5): 709-13, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18781272

RESUMO

Tumours that metastasise to groin nodes most frequently originate in genital and reproductive organs, skin, rectum or anus, or urinary bladder. However, rare cases of inguinal metastases from tumours above the diaphragm have been reported and only three of them had an inguinal metastasis which was recognised antemortem and reported in detail in the English medical literature. The primary tumours of these cases were malignant mesothelioma, salivary duct and breast carcinoma. In this paper, we report a case of carcinoma of the lung metastatic to an inguinal lymph node as the only evidence of progressive lung cancer.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/secundário , Neoplasias Pulmonares/patologia , Progressão da Doença , Humanos , Canal Inguinal , Metástase Linfática , Masculino , Pessoa de Meia-Idade
11.
Tuberk Toraks ; 55(2): 160-6, 2007.
Artigo em Turco | MEDLINE | ID: mdl-17602344

RESUMO

The characteristics of cases diagnosed as aspergillosis and Aspergillus spp. strains isolated from the respiratory tract samples in Mycology Laboratory of Trakya University Hospital between January 2002 and May 2006 were investigated. In this period, 137 bronchoalveolar lavages, 95 sputum, nine tracheal aspirates, three lung biopsies and one bronchial biopsy of 85 patients were processed. The samples were incubated in 25 degrees C and 35 degrees C media by culturing on brain heart infusion agar with blood and Sabouraud dextrose agar. Presence of leucocytes and fungal structures were searched in the smear stained by Gram and Giemsa. The patient was defined as probable aspergillosis case, if he/she patient had clinical findings, lung infiltration or fungus ball radiologically, at least one risk factor predisposing to aspergillosis and isolation of Aspergillus spp. in lower respiratory tract samples without finding of other nonmycotic infection. Of 22 patients isolated Aspergillus spp., 13, six, two, one were internalized in chest diseases, haemotology, neurosurgery and oncology clinics, respectively. Seven positive cultures were considered as findings of aspergillosis. Aspergillus fumigatus, Aspergillus flavus and Aspergillus niger were isolated in three, two, and two patients, respectively. Fungal structures were detected in only one sample in the direct microscopical examination. Ages of seven patients, five were males and two were females, were between 15 and 60. Predisposing risk factors were acute leukemia in six patients and lung cancer in one patient. Five patients were neutropenic and one was neutrophylic. Fungus ball was detected in radiological imaging of one patient, had a pulmonary cavitary lesion. Conventional amphotericine B was used in their therapies. Antifungal agents were switched to caspofungin and itraconazole in two and one patients, respectively. Three patients died in four weeks after isolation of Aspergillus spp. Aspergillosis cases were not high in our hospital because of absence of transplantation center for bone marrow or solid organ.


Assuntos
Aspergilose/epidemiologia , Aspergillus/isolamento & purificação , Infecções Respiratórias/epidemiologia , Adolescente , Adulto , Antifúngicos/uso terapêutico , Aspergilose/tratamento farmacológico , Aspergilose/etiologia , Aspergilose/microbiologia , Aspergilose/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infecções Respiratórias/tratamento farmacológico , Infecções Respiratórias/etiologia , Infecções Respiratórias/microbiologia , Infecções Respiratórias/patologia , Turquia/epidemiologia
12.
Clin Appl Thromb Hemost ; 12(3): 344-51, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16959689

RESUMO

The study was prospectively designed to assess the correlation between a new clinical model empirically developed for acute pulmonary embolism (PE) and ventilation/perfusion (V/P) scan results. One hundred sixty consecutive patients with suspected acute PE underwent clinical evaluation before V/P scintigraphy. The clinical probability of PE was categorized according to a structured clinical model empirically developed as low, intermediate, or high, and the results were compared with those of V/P scintigraphy. Forty, 61, and 59 patients were classified as low, intermediate, and high clinical probability, respectively. Seventy-five percent (30/40) of the patients with low clinical probability were also of low scintigraphic probability or had a normal result (r(s): 0.39, p=0.000); 28% (17/61) of the patients with intermediate clinical probability demonstrated intermediate scintigraphic probability (r(s): 0.20, p=0.012); and 68% (40/59) of the patients with high clinical probability were also of high scintigraphic probability (r(s): 0.43, p=0.000). Overall, the correlation of two scoring systems was statistically significant (r(s): 0.39, p=0.000). Unilateral leg swelling (p=0.027), syncope or near syncope (p=0.002), amputation of a hilar artery (p=0.007), and electrocardiographic signs of right ventricular overload (p=0.000) prevailed in patients with high scintigraphic probability. "Syncope-near syncope or hemodynamic collapse" PLUS "electrocardiographic signs of right ventricular overload or hypoxemia" combination had the most significant correlation with a high scintigraphic probability (r(s): 0.31; p=0.000). In conclusion, the new clinical model empirically developed was significantly successful to provide comparable results with V/P scan. This consistency was particularly prominent in patients with low or high clinical probability for PE.


Assuntos
Valor Preditivo dos Testes , Embolia Pulmonar/diagnóstico , Relação Ventilação-Perfusão , Doença Aguda , Adulto , Idoso , Idoso de 80 Anos ou mais , Eletrocardiografia , Feminino , Humanos , Perna (Membro)/patologia , Masculino , Pessoa de Meia-Idade , Probabilidade , Estudos Prospectivos , Fatores de Risco , Síncope
13.
Ann Nucl Med ; 19(6): 523-7, 2005 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16248392

RESUMO

OBJECTIVE: The mechanisms of dyspnea and exercise intolerance have not been fully elucidated. We aimed to investigate the clearance rate of technetium-99m diethyltriaminepentaaceticacid (Tc-99m DTPA) from lungs in hyperthyroid patients without clinical evidence of lung disease and to explore the interactions between their Tc-99m DTPA radioaerosol lung scintigraphy, spirometric measurements, and the levels of thyroid hormones. METHODS: We studied 19 hyperthyroid patients and 16 sex- and age-matched controls. Thyroid hormone levels were assessed. Spirometric lung function tests, diffusing capacity of the lung for carbon monoxide (DLCO) and the clearance rate of Tc-99m DTPA were performed in all participants. Ratio of DLCO value to the alveolar ventilation (DLCO/VA) and the means of half-time (T1/2) of Tc-99m DTPA clearance rate, which were used to evaluate alveolar-capillary membrane permeability, were calculated. RESULTS: There were no statistical differences between spirometric parameters (VC, FVC, FEV1/FVC, FEF 25-75) of the two groups (p > 0.05). Although the mean FEV1 level was significantly lower in the hyperthyroid patients than the control subjects (p < 0.01), in five patients FEV1 was only less than 80 percent of the predicted value. No significant difference in the means of DLCO, DLCO/VA or T1/2 values of Tc-99m DTPA clearance was observed between the two groups (p > 0.05). In hyperthyroid patients, there was a positive relation between DLCO/VA, DLCO/VA % and T1/2 values of Tc-99m DTPA clearance (p < 0.01, r = 0.732, p < 0.01, r = 0.742, respectively). The lung volumes and the levels of thyroid hormones did not show a significant relationship to T1/2 values of Tc-99m DTPA clearance in hyperthyroid group (p > 0.05). CONCLUSIONS: We conclude that increased thyroid hormones have no effect on permeability of alveolar-capillary membrane in hyperthyroid patients.


Assuntos
Hipertireoidismo/diagnóstico por imagem , Hipertireoidismo/metabolismo , Pneumopatias/diagnóstico , Pneumopatias/metabolismo , Testes de Função Respiratória , Pentetato de Tecnécio Tc 99m/farmacocinética , Administração por Inalação , Aerossóis/farmacocinética , Feminino , Humanos , Hipertireoidismo/complicações , Pneumopatias/etiologia , Masculino , Taxa de Depuração Metabólica , Pessoa de Meia-Idade , Cintilografia , Compostos Radiofarmacêuticos/administração & dosagem , Espirometria , Pentetato de Tecnécio Tc 99m/administração & dosagem
14.
Nucl Med Biol ; 32(2): 165-70, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15721762

RESUMO

The aim of this study is to investigate the potential effect of increased arterial saturation of oxygen in the magnitude of technetium-99m-hexakis-isobutyl-isonitrile (99mTc-MIBI) uptake in tumor tissue and to compare the results with those of conventional 99mTc-MIBI tumor imaging in the same patient with lung cancer. A total of 26 lung cancer patients underwent initial SPECT (I-SPECT) and after oxygen inhalation SPECT (O2-SPECT). The early (ER) and delayed ratios (DR) of O2-SPECT mean+/-S.D. were significantly higher than those of I-SPECT mean+/-S.D. (2.07+/-0.57 vs. 1.90+/-0.48 and 2.02+/-0.45 vs. 1.83+/-0.39, respectively). There are increased rates for the relative tumor uptake of 99mTc-MIBI by 9% for ER and 10% for DR on the O2-SPECT compared to I-SPECT. We found that 99mTc-MIBI uptake increased significantly in the tumor tissue with O2-SPECT compared to I-SPECT. In conclusion, 99mTc-MIBI scintigraphy is one of the main methods for differentiating viable and nonviable tissue fractions in tumors. We consider that 99mTc-MIBI uptake increase after oxygen inhalation is an indicator of positive acute cellular response of the tumor tissue to the rising tissue oxygen level.


Assuntos
Artérias/metabolismo , Neoplasias Pulmonares/diagnóstico por imagem , Neoplasias Pulmonares/metabolismo , Oxigênio/sangue , Tecnécio Tc 99m Sestamibi/farmacocinética , Administração por Inalação , Adulto , Idoso , Hipóxia Celular , Feminino , Humanos , Neoplasias Pulmonares/irrigação sanguínea , Masculino , Pessoa de Meia-Idade , Oxigênio/administração & dosagem , Compostos Radiofarmacêuticos/farmacocinética , Tomografia Computadorizada de Emissão de Fóton Único/métodos
15.
Mediators Inflamm ; 13(3): 209-10, 2004 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15223614

RESUMO

The aim of the present study is to determine whether patients with primary spontaneous pneumothorax (PSP) are subject to oxidative stress. For this purpose, we measured the activities of red blood cell superoxide dismutase, which is an antioxidant enzyme, and the level of plasma malondialdehyde, which is one of the lipid peroxidation markers, in a group of patients with PSP. The study was carried out with 16 patients with PSP and 24 healthy individuals. The two groups were similar to each other in terms of sex, age and smoking attitudes. Erythrocyte superoxide dismutase activity was found to be significantly lower in patients with PSP than in the control group (p < 0.01). The plasma malondialdehyde levels were significantly high in patients with PSP (p < 0.01). Our results suggest that oxidative stress may contribute to the pathogenesis of PSP.


Assuntos
Malondialdeído/sangue , Pneumotórax/sangue , Superóxido Dismutase/sangue , Adulto , Feminino , Humanos , Masculino , Estresse Oxidativo , Pneumotórax/enzimologia , Valores de Referência
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