Validity of lung ultrasound to rule out iatrogenic pneumothorax performed by pulmonologists without experience in this procedure.

INTRODUCTION: Ultrasonography has been shown to be a useful tool for diagnosing pneumothorax in the hands of experts. After performing bronchopleural procedures, the recommendation is to perform chest radiography to rule out complications. Our objective was to determine the validity of lung ultrasound, conducted by pulmonologists without experience in this procedure, to tule out pneumothorax after invasive procedures. MATERIAL AND METHODS: Our prospective observational study consecutively included patients who underwent transbronchial lung biopsy (TBLB), therapeutic thoracentesis (TT) and/or transparietal pleural biopsies (PB) for whom subsequent chest radiography to rule out complications was indicated. In all cases, the same pulmonologist who performed the technique performed an ultrasound immediately after the procedure. A diagnosis of pneumothorax was considered in the presence of a lung point or the combination of the following signs: absence of pleural sliding, absence of B-lines and presence of the "barcode" sign. RESULTS: We included 275 procedures (149 TBLBs, 36 BPs, 90 TTs), which resulted in 14 (5.1%) iatrogenic pneumothoraxes. Ultrasonography presented a sensitivity of 78.5%, a specificity of 85% and positive and negative predictive value of 22% and 98.6%, respectively. Ultrasonography did not help detect the presence of 3 pneumothoraxes, one of which required chest drainage, but adequately diagnosed 2 pneumothoraxes that were not identified in the initial radiography. CONCLUSIONS: Lung ultrasound performed by pulmonologists at the start of their training helps rule out pneumothorax with a negative predictive value of 98.6%, thereby avoiding unnecessary radiographic control studies in a considerable number of cases.

Validez de la ecografía torácica para descartar neumotórax iatrogénico realizada por neumólogos sin experiencia en este procedimiento / Validity of lung ultrasound to rule out iatrogenic pneumothorax performed by pulmonologists without experience in this procedure

Introducción La ecografía ha demostrado ser una herramienta útil para el diagnóstico del neumotórax en manos expertas. Tras los procedimientos broncopleurales se recomienda realizar una radiografía de tórax para descartar complicaciones. Nuestro objetivo ha sido determinar la validez de la ecografía torácica para descartar neumotórax tras procedimientos invasivos, realizada por neumólogos sin experiencia en este procedimiento. Material y métodos Estudio observacional prospectivo que incluyó pacientes consecutivos sometidos a biopsia transbronquial (BTB), toracocentesis evacuadora (TE) y/o biopsias pleurales transparietales (BPT) a los que se les indicó radiografía de tórax posterior para descartar complicaciones. En todos los casos el mismo neumólogo que hizo la técnica, realizó una ecografía inmediatamente después del procedimiento. Se consideró diagnóstica de neumotórax la presencia de punto pulmonar o la combinación de los signos: ausencia de deslizamiento pleural, ausencia de líneas B y presencia del signo de «código de barras». Resultados Se incluyeron 275 procedimientos (149 BTB, 36 BPT, 90 TE) entre los que se produjeron 14 (5,1%) neumotórax iatrogénicos. La ecografía presentó una sensibilidad de 78,5%, una especificidad de 85%, y un valor predictivo positivo y negativo de 22% y 98,6%, respectivamente. La ecografía no permitió detectar la presencia de tres neumotórax, precisando uno de ellos drenaje torácico y diagnosticó adecuadamente dos neumotórax que no se detectaban en la radiografía inicial. Conclusiones La ecografía torácica realizada por neumólogos que inician su curva de aprendizaje permite descartar neumotórax con un valor predictivo negativo (VPN) del 98,6%, evitando realizar en un número considerable de casos estudios radiográficos de control innecesarios (AU)

Introduction Ultrasonography has been shown to be a useful tool for diagnosing pneumothorax in the hands of experts. After performing bronchopleural procedures, the recommendation is to perform chest radiography to rule out complications. Our objective was to determine the validity of lung ultrasound, conducted by pulmonologists without experience in this procedure, to rule out pneumothorax after invasive procedures. Material and methods Our prospective observational study consecutively included patients who underwent transbronchial lung biopsy (TBLB), therapeutic thoracentesis (TT) and/or transparietal pleural biopsies (PB) for whom subsequent chest radiography to rule out complications was indicated. In all cases, the same pulmonologist who performed the technique performed an ultrasound immediately after the procedure. A diagnosis of pneumothorax was considered in the presence of a lung point or the combination of the following signs: absence of pleural sliding, absence of B-lines and presence of the “barcode” sign. Results We included 275 procedures (149 TBLBs, 36 BPs, 90 TTs), which resulted in 14 (5.1%) iatrogenic pneumothoraxes. Ultrasonography presented a sensitivity of 78.5%, a specificity of 85% and positive and negative predictive value of 22% and 98.6%, respectively. Ultrasonography did not help detect the presence of 3 pneumothoraxes, one of which required chest drainage, but adequately diagnosed 2 pneumothoraxes that were not identified in the initial radiography. Conclusions Lung ultrasound performed by pulmonologists at the start of their training helps rule out pneumothorax with a negative predictive value of 98.6%, thereby avoiding unnecessary radiographic control studies in a considerable number of cases (AU)

Validity of thoracic ultrasonography to rule out iatrogenic pneumothorax performed by pulmonologists without experience in this procedure. / Validez de la ecografía torácica para descartar neumotórax iatrogénico realizada por neumólogos sin experiencia en este procedimiento.

INTRODUCTION: Ultrasonography has been shown to be a useful tool for diagnosing pneumothorax in the hands of experts. After performing bronchopleural procedures, the recommendation is to perform chest radiography to rule out complications. Our objective was to determine the validity of thoracic ultrasonography to rule out pneumothorax after invasive procedures, conducted by pulmonologists without experience in this procedure. MATERIAL AND METHODS: Our observational prospective study consecutively included patients who underwent transbronchial biopsy (TBB), evacuating thoracentesis (ECT) and/or transparietal pleural biopsies (TPB) who were indicated subsequent chest radiography to rule out complications. In all cases, the same pulmonologist who performed the technique performed an ultrasound immediately after the procedure. A diagnosis of pneumothorax was considered the presence of a lung point or the combination of the following signs: absence of pleural sliding, absence of B-lines and presence of the «barcode¼ sign. RESULTS: We included 275 procedures (149 TBBs, 36 TPBs, 90 ECTs), which resulted in 14 (5.1%) iatrogenic pneumothoraxes. Ultrasonography presented a sensitivity of 78.5%, a specificity of 85% and a positive and negative predictive value of 22% and 98.6%, respectively. Ultrasonography did not help detect the presence of 3 pneumothoraxes, one of which required chest drainage, but adequately diagnosed 2 pneumothoraxes that were not identified in the initial radiography. CONCLUSIONS: Thoracic ultrasonography performed by pulmonologists at the start of their training helps rule out pneumothorax with a negative predictive value of 98.6%, thereby avoiding unnecessary radiographic control studies in a considerable number of cases.

[Hematoma of the rectus abdominis. experience of a primary care hospital]. / Hematoma del recto anterior del abdomen: experiencia en un hospital comarcal.

OBJECTIVE: To describe patients diagnosed with hematoma of the rectus abdominis (HRA) muscle. MATERIAL AND METHODS: A retrospective analysis of patients diagnosed with HRA over the past 8 years in our center. RESULTS: A total of 17 patients (9 women) with mean age of 73 years were included in the study. In 52% of the cases the HRA was the cause of hospitalization. Anticoagulant therapy was documented in 70%. More than half of patients treated with low molecular weight heparin had renal insufficiency. In the group receiving oral anticoagulants (OA), 86% had INR greater than 4. Paroxysmal cough appeared in 13. The most common presentation was abdominal pain and palpable mass. CT scan sensitivity was superior to that of the ultrasound. The most common location was the lower right. Treatment was conservative in all but one. Two patients died. Mean decrease in hemoglobin was 4.7 g/dl. Average stay was 19 days. CONCLUSIONS: In our center, HRA almost equally affects both genders and appears in older people with excessive anticoagulation and cough. The clinical presentation, increased diagnostic sensitivity of CT scan and predominance in the right abdominal involvement are similar to other series. Mortality and hospital stay are higher than described.

[Study of hypertensive very elderly population admitted to a regional hospital]. / Estudio de la población hipertensa muy anciana ingresada en un hospital comarcal.

OBJECTIVES: To analyse the characteristics of the hospitalized very elderly people (age equal or superior to 80 years) with hypertension (HT). PATIENTS AND METHODS: Prospective study including the patients with HT who need hospitalization in our medical institution. Data collected were: demographic, clinical parameters, factors of vascular risk, hygienic-dietetic strategies, pharmacological treatment, cause of hospitalization, and biochemical determinations. RESULTS: There were included 92 very elderly patients (71 women); they represent 14 % of total hospitalized people. Two third parts had not realized academic studies, being 60 % of rural origin. Almost the half (41 %) was diabetic, and 27 % had dyslipidemia. Overall 62 % had 4 or more factors of cardiovascular risk. The hospitalization was related to the HT in the half of the cases, and 61 % had already previously some cardiovascular event. The lifestyle modifications more frequent were: not to smoke (95 %), no alcohol (81 %), and diet without salt (75 %). Diuretics were the most frequent anti-hypertensive agent used. The global mortality was two times superior to the hypertensive population < 80 years in the same period. CONCLUSIONS: The very elderly hypertensive patients of our study are fundamentally women, of rural origin and without academic studies. The above mentioned hospitalization is attributable directly to the HT in the half of the cases. They are a population of high cardiovascular risk, with previous events cardiac and cerebral-vascular. They confess to realize frequently the hygienic-dietetic strategies recommended. The diuretics are the anti-hypertensive agents most used for the HT. Since it was of waiting for the mortality in this group it is high.

Primary mesenteric liposarcoma of jejunum: presentation like a cystic mass.

This report describes a rare case of intra-abdominal liposarcoma in a 67-year-old woman. The patient presented at Internal Medicine Unit in May 2004, to study of thyroid pathology. The clinical examination was normal, except for the finding of an asymptomatic mass in the abdomen. The patient knew the existence of tumor since time ago, but she confesses to have only occasional discomfort. In the abdominal ultrasonography a solid mass with large cystic component was detected but relation with other organs was not clear. Computed tomography revealed the presence of a mass with solid and cystic components, in contact with small intestine in the left side of abdomen. A complete resection of tumor arising from mesentery of jejunum was performed successfully with end to end anastomosis. The gross specimen was lobulated and measured 8.5 x 7.5 cm. The histopathology analysis showed proliferating lipoblasts with irregular nuclei on a myxoid background, with plexiform vascular pattern, characteristics belongs to myxoid type liposarcoma. The patient is alive and well one year after removal of tumor. The uncommon site and the exceptional cystic morphology of tumor are discussed, and so it must be included the primary mesenteric liposarcoma in the differential diagnosis of intra-abdominal tumors with cystic large areas.

Neumonía neumocócica con bacteriemia en adultos: estudio descriptivo en el noroeste de España / Pneumococcal pneumonia with bacteremia in adults: a descriptive study from north-west of Spain

Objetivo: Análisis de pacientes mayores de 15 años, con neumonía neumocócica con bacteriemia (NNB), en el Complejo Hospitalario de Pontevedra. Material y métodos: Se estudiaron 83 casos de NNB en los últimos 6 años (1995-2000). Resultados: Había 57 hombres y 26 mujeres. La edad media era de 56 años; en los menores de 40 años, había un 60%, infectado por el VIH. Dos tercios de los pacientes, tenían más de un factor predisponente, destacaban: el tabaquismo, el alcoholismo y la infección por el VIH. La presentación clínica típica de neumonía neumocócica, la encontramos en el 73%. El cálculo del índice de severidad de la neumonía (ISN), encuadró la mitad de los pacientes, en el grupo de bajo riesgo de mortalidad. La resistencia a la penicilina en los aislamientos, fue de 31%. Se modificó el tratamiento antibiótico inicial, en el 11% de los casos. Los fallecidos (10%) tenían: edad superior a 65 años, presencia de confusión mental, una mayor hipoxemia e hipercapnia, ingreso en la UCI, una presentación atípica, existencia de derrame pleural y un ISN mayor de 140. Conclusiones: Los pacientes NNB en nuestra área presentan unas características clínicas similares a las descritas en otras series; la mitad se incluyen en el grupo de bajo riesgo de mortalidad. Aparte de otros factores ya conocidos, un ISN superior a 140, se relaciona directamente con la mortalidad (AU)

[Pneumococcal pneumonia with bacteremia in adults: a descriptive study from the north-west of Spain]. / Neumonía neumocócica con bacteriemia en adultos: estudio descriptivo en el noroeste de España.

OBJECTIVE: Analysis of adults patients (> 15 years of age) with Bacteremic Pneumococcal Pneumonia (BPP), in the Hospital Complex of Pontevedra. MATERIAL AND METHODS: 83 cases of BPP were studied in the last 6 years (1995-2000). RESULTS: There were 57 men and 26 women. The overall mean age was 56 year-old; in those smaller than 40 years, there was 60% infected by the HIV. The patients' two thirds, had > 1 predisposing condition, highlighted: the cigarette smoking, the alcoholism and the HIV infection. The typical clinical presentation of pneumococcal pneumonia, we find it in 73%. The calculation of the pneumonia severity index (PSI, Fine et al.), it framed half of the patients in the group of low risk of mortality. The resistance to the penicillin in the isolations, was of 31%. The initial antibiotic treatment was modified, in 11% of the cases. The fatal cases (10%) had: superior age to 65 years, presence of mental confusion, a bigger hypoxemia and hypercapnia, admission in the ICU, atypical presentation, existence of pleural effusion and a PSI bigger than 140. CONCLUSIONS: The patient with BPP in our area, presents some similar clinical characteristics to those described in other series; the half is included in the group of low risk of mortality. Apart from other factors already well-known, a superior PSI at 140, is related directly with the mortality.

[Primary actinomycosis of the abdominal wall. Description of 2 cases and review of the literature]. / Actinomicosis primaria de la pared abdominal. Descripción de dos casos y revisión de la literatura.

We report two cases of isolated abdominal wall actinomycosis and review 18 previously reported cases to further characterize the clinical findings and the therapeutic management of this syndrome. This diagnosis would be advocated in patients with a palpable abdominal mass of subacute appearance with a previous history of digestive medical illness, diabetes, abdominal surgery, or prolonged IUD use. In contrast with other actinomycosis locations, remarkable data were a more elevated mean age of patients; a female predominance; a prevalent location of mass in abdominal lower left quadrant; and a shorter duration of symptomatology before to diagnosis. The CT is the first choice for imaging study and percutaneous needle aspiration would be recommended for definite diagnosis. The long-term antibiotic therapy, with or without percutaneous drainage, is the first treatment choice because is very effective and made unnecessary a more invasive surgical management. The prognosis is excellent with adequated treatment.

Na+,K+-ATPase was found to be the membrane component responsible for the hydrophobic behavior of the brain membrane tubulin.

We have previously described that the tubulin isolated from brain membranes as a hydrophobic compound by partitioning into Triton X-114 is a peripheral membrane protein [corrected]. The hydrophobic behavior of this tubulin is due to its interaction with membrane protein(s) and the interaction occurs principally with the acetylated tubulin isotype. In the present work we identified the membrane protein that interacts with tubulin as the Na+,K+-ATPase alpha subunit by amino acid sequencing. Using purified brain Na+,K+-ATPase we were able to isolate part of the total hydrophilic tubulin as a hydrophobic compound which contains a high proportion of the acetylated tubulin isotype.