Search PubMed⌕ Search

Biomedical subjects

M Moreno

Publications and source records attributed to M Moreno.

At least 271 records · Page 15Linked to original sources
PubMedDate not supplied

Student perceptions of clinical mistreatment.

This study examined radiography students' perceptions regarding mistreatment during the clinical portion of their education. Results suggest that a majority of students perceived mistreatment and that second-year students were 4 times more likely to perceive mistreatment than first-year students. Most students who perceived mistreatment indicated that the abuse was verbal and came primarily from staff technologists. Most perceived the mistreatment to be slightly important and slightly upsetting. However, approximately one third perceived the mistreatment to be very important and very upsetting. As part of the study, students were asked to suggest preventive measures that could help eradicate abusive behavior in the clinical setting.

Adolescent↗
PubMedDate not supplied

Immunohistochemical characterization of pineocytomas.

The immunoreactivity of a panel of poly- and monoclonal antibodies raised against different neuronal and glial antigens, was studied in paraffin-embedded specimens of five pineocytomas. Antibodies against neuron-specific enolase (NSE), S-100 protein, neurofilaments protein (NFP), glial fibrillar acidic protein (GFAP), myelin basic protein (MBP), Synaptophysin (SYN) and vimentin were used. NSE immunoreactivity was detectable in nearly all tumoral cells. S-100 expression was present in all tumors, but a significant variation in the number of S-100 positive cells was noted in the different specimens; they ranged from 3% of S-100 positive cells in some areas of case 1, to 30% in other areas of case 4. The number of GFAP-positive cells detected in four of the five tumors was minimal. In the remaining tumor, 10% to 14% the positively GFAP antisera-stained cells could be seen in some areas; this tumor was considered a pineocytoma with astrocytic differentiation. MBP immunoreactivity was found in isolated cells only in one tumor. Neurofilaments or vimentin expression could not be found in tumoral cells. Synaptophysin was studied in two tumors (cases 4 and 5). Both tumors showed a fine granular neuropil pattern of immunoreactivity, but only in isolated cells of case 5, occasional cytoplasmic positivity could be determined. Based upon our results we can conclude that NSE and synaptophysin are markers that may be applied in the diagnosis of pineocytomas. Further, our results support the hypothesis that the tumoral cells in these neoplasms are of neuroendocrine origin.

Adolescent↗
PubMedDate not supplied

[Selective right bronchial intubation using tracheal tubes under fibroscopic guidance].

We have evaluated the technique of right bronchial intubation for selective right pulmonary ventilation using one lumen tracheal tubes as an alternative to double lumen tubes. We studied 20 patients ASA II-III with a relatively preserved pulmonary function who were programmed for left thoracotomy. We used Shiley nr. 9 or Mallinckrodt nr. 11 tubes. After endotracheal intubation the tube was blindly advanced to the main right bronchus. The position of the tube was assessed by auscultation and it was verified and modified, if necessary, by fibroscopic visualization. The tube was advanced in such a way that Murphy's hole of the endotracheal tube remained in front of the exit of the right superior lobar bronchus. In three patients (15%) blinded placement of the tube was appropriate and in 4 patients (20%) fibroscopic replacement of the tube was required. In the remaining 13 patients (65%) placement of the tracheal tube was considered incorrect: tube rotation in 7 cases, upper placement of the Murphy's hole with respect to the origin of the superior lobar bronchus in 4 cases, and excessive distal placement of Murphy's hole with respect to the superior lobar bronchus in 2 patients. Complications related with the incorrect position of the tube were: leaking of gas into the left bronchium in 5 patients (25%), displacement of the tracheal tube into the main left bronchus requiring withdrawal of the tube to the trachea in one case (5%), hypoxemia (saturation of O2 lower than 90%) in spite of ventilation with FiO2 = 1 in two patients, moderate hypercapnia in three cases, and atelectasis of the right superior lobe during the postoperative phase in three patients (15%).(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMedDate not supplied

[Incidence of influenza and influenza vaccine effectiveness in the 2004-2005 season].

BACKGROUND: To quantify the incidence of flu in different groups of the population of Navarra in the 2004-2005 season, and to evaluate the effectiveness of anti-flu vaccination. METHODS: The analysis of influenza cases in the system of compulsory notificable diseases was complemented by the individualised notifications in the network of sentinel doctors that covers a population of 22,339 inhabitants. The coverage and effectiveness of the vaccine was studied. RESULTS: Vaccine coverage in (3)65 year olds reached 62%. The incidence of influenza was 42.6 cases per 1,000 inhabitants. It reached a maximum in mid-January, exceeding 750 weekly cases per 100,000 inhabitants and 1,900 cases per 100,000 children. The highest rate of influenza was observed in under-15 year olds (49.4 cases per 1,000 inhabitants) and the lowest in non-institutionalised (3)65 year olds (2.6 per 1,000 inhabitants), although it was higher in geriatric residences (62.1 per 1,000; p<0.0001). Seventy-nine percent of the cases from 5 to 64 years resulted in absenteeism from school or work. The flu virus was identified in 42/65 (65%) nasopharyngeal smears, 90% being influenza virus A(H3). The incidence of influenza was 3.08% in the unvaccinated and 0.45% in the vaccinated (p<0.001). The global effectiveness of the anti-flu vaccine was 65%, and in (3)65 years old it was 73%. CONCLUSION: Although its effectiveness is not total, the vaccine is the main measure for preventing influenza. The network of sentinel doctors provide useful information for the coordination of care and public health activities against flu.

Adolescent↗
PubMedDate not supplied

[Endoscopic management of postoperative biliary fistulas].

Biliary fistulas have been managed by surgical correction with no good results. From 1986 to 1990, endoscopic therapy was attempted in 24 patients with postoperative persistent biliary-cutaneous fistulas. Endoscopic retrograde cholangiography demonstrated residual biliary stones in 19 patients (79%). The mean fistula drainage was 540 ml/day, and in 75% the site of the fistula was near the cistic duct stump. Sphincterotomy with or without biliary stent placement resulted in rapid resolution of the fistula in 23 patients (95.8%). In those patients treated with biliary stents the fistula healed spectacularly in 24-72 hrs.

Adolescent↗
PubMedDate not supplied

[The endoprosthetic management of biliary calculi larger than 20 mm: the long-term results].

We present our experiences in fifteen high-risk surgical patients, with large bile duct stones, treated with endoscopic home-made biliary stents. We observed good immediate and mediate results in all patients, with a 19.9 months follow-up. In one case, acute cholangitis developed after 25 months and the patient died. Other three died of unrelated causes. None of the patients required surgery. We conclude that endoscopic stenting is a useful procedure in the treatment of large bile duct stones in poor-risk surgical patients.

Aged↗
PubMedDate not supplied

[A low-level stress test, in the early phase of myocardial infarction and its correlation with coronary angiography].

In a prospective 24-month trial at the Instituto Nacional de Cardiologia, 56 patients were studied. All patients had acute myocardial infarction (AMI), diagnosed by clinical, electrocardiographic and enzymatic means. They were studied in two groups: Group A with single localized AMI (n = 30) and Group B with AMI at two locations (n = 26); a resting electrocardiogram (EKG) was analyzed in each case and a low level stress test was performed within the 2nd and 3rd postinfarction weeks; coronary angiography was done between the 8th and 9th postinfarction weeks. In Group A the low level stress test (LLST) was positive for ischemia at a distance from the infarction site in 21, and eighteen of them had multi-vessel injuries (MVI); in 9 the LLST was negative; of these 7 had single-vessel injury; only the remaining 2 had MVI (p less than 0.001) with 90% sensitivity and 78% specificity. In Group B there was no significant relationship between LLST and coronary angiography (64% sensitivity, and 62% specificity). Relating the ischemic change at a distance in the resting EKG with coronary angiography, we found 75% sensitivity and 55% specificity in Group A. In Group B, sensitivity and specificity were even lower. We conclude that LLST in the early postinfarction phase in Group A is a safe and reliable method to suspect MVI, allowing the early identification of patients with lesions that could be treated by surgical means.

Coronary Angiography↗
PubMedDate not supplied

[Segmental analysis of the movement of the posterior mitral valve in mitral stenosis].

We have analyzed independently, both, early diastolic and end diastolic (A wave) movements of the posterior mitral leaflet in 302 cases of mitral stenosis with sinus rhythm, as well as in a control group of 100 subjects without mitral stenosis. Studied patients were separated into two groups: 275 that were not treated surgically, and 27 studied after mitral commisurotomy. We described 4 patterns of posterior mitral leaflet early diastolic movement, and 3 patterns of A wave motion. Only those patterns that showed anterior drift of the studied segment of the posterior mitral leaflet, were considered diagnostic of mitral stenosis. The sensitivity found was 49% for the anterior early diastolic movement; 89,5% for the anterior A wave, and 95,3% for both signs considered together. The specificity was 99% for anterior A wave, with a predictive value of 99,6%. When surgical and non surgical groups were compared, the absence of anterior drift in early diastole in the former group, showed to have statistical significance when the Chi square test was employed, while A wave pattern (anterior drift) did not show any difference between both groups. It is concluded that the most sensitive and specific sign for M-mode echocardiagraphic diagnosis of mitral stenosis in patients with sinus rhythm is the anterior drift of posterior mitral leaflet's A wave.

Diastole↗
PubMedDate not supplied

[Endoscopic management of pyloric stenosis in patients with high surgical risk].

Pyloric stenosis is a serious complication of acid peptic disease of the stomach. The treatment with balloon dilation by endoscopy has been reported successfully and with few complications. We use a therapeutic endoscope and different diameter dilators during various sessions. We report our experience in 18 patients with high surgical risk and peptic pyloric stenosis during four years (january 1988 to december 1991). Our results were satisfactory and we believe this technique could be used as a valid alternative to surgical procedures in high risk patients.

Catheterization↗