Organ transplants and education: experience of the Universidade Federal de Ciências da Saúde de Porto Alegre with subjects.

INTRODUCTION: Today there is an insufficient number of donated organs in Brazil. This is particularly due to the general population's and health care professionals' lack of information. Therefore, with this project we intend to consolidate knowledge on organ donation to teach health care students of different areas so they are able to propagate such knowledge. MATERIALS AND METHODS: In 2006, at Universidade Federal de Ciências da Saúde de Porto Alegre, an "Organ donation and transplants" subject was created, with the aim to educate health care students. In the next years, it was split in two subjects, named "Introduction to transplants" and "Donation and transplants." By enrolling, students get theoretical classes and practical experience in out- and inpatient facilities and in surgical environments at the Santa Casa Hospital Complex. Furthermore, they can participate in campaigns at parks, stadiums, and health care fairs that take place at several schools in Porto Alegre. To finish the subjects, students present a conclusion report. RESULTS: Seven years after implementation of the subject, and with more than 400 students enrolled, several accomplishments can be highlighted. For example, the creation of the Organ Transplantation League, the implementation of a day to spread conception of the donation-transplant process (with the elaboration of a Web page on the subject), and the release of a book on the subject written by students and professors. DISCUSSION AND CONCLUSION: Health care professionals' education is a central point in donation and transplant process. This is because they become, inevitably, educators, and this brings a long-term consequence, consisting of enhanced logistics skills on brain-death diagnosis and further transfer of information to the population (hopefully reducing denial by families at the time of the donation). We conclude that this is a project to be followed by other medical schools so that, effectively, the number of donors increases and, consequently, the transplantation of organs and tissues as well.

Purpura fulminans during meningococcal sepsis treated with Drotrecogin alpha. A clinical case.

A male patient, 29 years old, was admitted to our unit with purpura fulminans, coagulation deficiency, renal failure and subsequent septic shock accompanied by respiratory insufficiency in the absence of meningeal signs. The serum levels of endogenous protein C, ATIII and calcium were well below the norm. The bacteriological examination revealed the presence of gram-negative diplococci. The onset of adult respiratory distress syndrome (ARDS) revealed aa early complication of the meningococcal sepsis. Forty-eight hours after being admitted, the recombinant protein C infusion was started at a dose of 24 microg/kg/h for the duration of 96 h. The skin lesions regressed, starting from the ecchymosis and the edema of the face, trunk and auricular pavilions. A week after the onset of the symptomatology the chest X-ray appeared clear, the renal function had normalised, and the signs of shock had disappeared.

[Variability in the management of patients with bladder catheterization in the ULSS 18 of Rovigo]. / La variabilità della gestione dei pazienti con catetere vescicale nell'Azienda ULSS 18 di Rovigo.

A survey on the practices related to the management of patients with indwelling urinary catheter was organised in two hospitals and health districts, with the aim of identifying problems or incorrect habits. Thirty-five nurses were interviewed with a questionnaire exploring different practices and procedures related to the catheter care. While practices were overall satisfactory and homogeneous across wards, few problems were identified: the ill defined practice of bladder training before catheter removal; the difficulties in maintaining a closed system; an improper use of sterile sacs. The data were presented and discussed during two meetings attended by 186 nurses where the emerging problems and the practicability of changes in habits and ward protocols were thoroughly discussed.

Molecular epidemiology of TT virus in Italy and phylogenesis of viral isolates from subjects at different risk for parenteral exposure.

The prevalence and genotype distribution of human TT virus (TTV) in Italy were analysed in 593 subjects at different risk of parenteral infection who included blood donors, patients with chronic type C hepatitis (HCV), thalassemic patients, patients on haemodialysis, human immunodeficiency virus type 1 (HIV-1)-negative intravenous drug users (IVDUs), and HIV-1-infected subjects (IVDUs, heterosexual contacts and homosexual males). Plasma TTV-DNA was detected using nested PCR with primers deduced from the N22 region of the open reading frame 1 (ORF-1) and from the untranslated region (UTR) of the viral genome. Phylogenetic analysis of the sequences obtained from ORF-1 was also undertaken. A high prevalence of plasma TTV-DNA was observed using the UTR primers, with rates varying from 83-100% in the study groups. Using the N22 primers, HIV-1 positive IVDUs and homosexual males, haemodialysed patients and thalassemic patients had a significantly higher TTV prevalence (range: 23.0-86.1%) than blood donors, who displayed a high frequency of positivity (10.6%). Sequence analysis of 127 N22-positive isolates revealed that 42.5% were of type 1, 53.5% of type 2, 2.4% of type 3, and that two isolates (1.6%) were closely related to genotypes 1-2 but distinct from the other major genotypes. TTV-2 was significantly more prevalent in patients at high risk for parenteral infection and in HIV-1 positive homosexuals. In sequential samples from 15 TTV-infected subjects, N22 sequences were detectable persistently in 12 (80.0%) and UTR sequences persisted in all 15 patients over a mean period of 29.6 months. This data indicates that TTV is widespread in Italy in parenterally exposed subjects, and that the infection frequently persists.

An Italian national multicenter study for the definition of reference ranges for normal values of peripheral blood lymphocyte subsets in healthy adults.

BACKGROUND AND OBJECTIVE: Reference ranges are necessary in clinical chemistry and hematology to compare an observed value and to provide meaningful information. The aim of this multicenter study was the definition of reference ranges of the relative and absolute numbers of lymphocyte subsets by evaluating a large cohort of healthy adults and by using a standard protocol to reduce the variability in both sample preparation methodology and flow cytometer operation. Other aims of this study were the evaluation of the influence of sex, age, obesity, smoking, sport and some methodological variables on lymphocyte subsets and the comparison of differential white blood cell values obtained by flow cytometry and those obtained by hematology counters. DESIGN AND METHODS: Blood samples from 1311 healthy adults (blood donors and volunteers chosen according to the Italian law for donor selection) were analyzed to study, by flow cytometry, the immunophenotype of lymphocyte subsets and their distribution in terms of percentages and absolute values. Pre-analytical and analytical phases were performed according to the guidelines of the International Federation of Clinical Chemistry (IFCC) and the Italian Group of Cytometry (GIC). T cells were defined by the expression of CD3; T subpopulations by the coexpression of CD4 or CD8 or HLA-DR; B-lymphocytes were identified by the expression of CD19 while natural killer lymphocytes were identified by positivity of CD16 and/or CD56 without CD3. We calculated, for each laboratory and for all data collected, the frequency distribution percent values and absolute values of each lymphocyte subset. The influence of age, sex, smoking, obesity and sport was calculated by the t-test. The influence of some methodological variables was calculated by the t-test and multiple regression test. RESULTS: Fifty-three flow cytometry laboratories at different institutions in Italy participated in this study. Data was obtained from 1311 healthy adults aged from 18 to 70; 968 phenotype analyses (74%) were considered eligible for statistical analysis. Significant results were found as regards sex, smoking and some methodological variables (quantity of sample, washing procedures, brand of monoclonal antibodies and kind of instruments used). The comparison between hematology counters and cytometers showed no difference for any of the parameters considered. INTERPRETATION AND CONCLUSIONS: The large number of cases, the different kinds of laboratories and their distribution throughout the country make our sample representative of the Italian adult population. The standardization criteria of pre-analytical and analytical phases (the most important issues in evaluating reference values for an indicator) assured good reproducibility among laboratories so that the obtained reference ranges may be useful for interlaboratory comparison of results. Instruments and the brand of monoclonal antibodies may represent an inevitable cause of variability.

Physiological inhibitors of blood coagulation and prothrombin fragment F 1 + 2 in type 2 diabetic patients with normoalbuminuria and incipient nephropathy.

Microalbuminuria and haemostasis derangements have been considered as independent risk factors for cardiovascular death in type 2 (non-insulin-dependent) diabetic patients. Few studies have assessed coagulation inhibitors in type 2 diabetic patients with normoalbuminuria and microalbuminuria. Therefore, 32 type 2 diabetic patients with normoalbuminuria (albumin excretion rate, AER < 20 mg/min, mean 7 +/- 1) and 28 type 2 diabetic patients with microalbuminuria (AER 20-200 mg/min, mean 84 +/- 11) were studied. The patients were matched for age, sex, disease duration and treatment, body mass index (BMI), blood pressure and glycohaemoglobin. Protein C and S activity, antithrombin III, thrombomodulin and prothrombin fragments 1 + 2 (F 1 + 2) were assessed together with fibrinogen, triglycerides, total and high density lipoprotein (HDL)-cholesterol concentrations. Fibrinogen, total and low density lipoprotein (LDL) concentrations were similar in the two groups, while a significant difference was observed for triglycerides (normoalbuminuric group: 128 +/- 10 mg/dl, microalbuminuric group: 184.1 +/- 17 mg/dl; P < 0.007) and HDL-cholesterol (normoalbuminuric group: 45 +/- 2 mg/dl, microalbuminuric group: 39 +/- 2 mg/dl; P < 0.05). The coagulation parameters were as follows: normoalbuminuric group: protein C activity 109% +/- 5%, protein S 95.4% +/- 5%, thrombomodulin 49.3 +/- 3 ng/ml, antithrombin III 93.3% +/- 3%, F 1 + 2 1.05 +/- 0.04 nmol/l; microalbuminuric group: protein C activity 107% +/- 4%, protein S 98.4% +/- 4%, thrombomodulin 64.4 +/- 4 ng/ml, antithrombin III 93.3% +/- 3%, F 1 + 2 1.03 +/- 0.05 nmol/l. The difference was significant for thrombomodulin (P < 0.007). A significant direct correlation was observed in the microalbuminuric group between AER and thrombomodulin (r = 0.38, P < 0.05). In conclusion, our data do not support the hypothesis that a reduction in the activity of anticoagulant physiological inhibitors (protein C, protein S, antithrombin III) could contribute to explain the higher cardiovascular risk in type 2 diabetic patients with microalbuminuria. The elevation of plasma thrombomodulin concentration in type 2 diabetic patients could be the consequence of widespread vascular damage in diabetic patients with incipient nephropathy.

Morphological comparison of mitral and aortic bioprostheses explanted from the same patient for primary tissue failure.

Host factors might influence the fate of tissue prostheses. We have analyzed the tissue failure phenomenon in mitral and aortic porcine bioprostheses explanted from the same patient so as to avoid the bias of host factors. The 50 bioprostheses of this study were explanted from 25 patients reoperated on because of malfunctioning due to primary tissue failure. Bioprostheses explanted were photographed, radiographed and observed in polarizing light. All lesions analyzed received a score on the basis of morphological criteria. No difference was observed in the occurrence of pannus, tears or cells infiltrates. Calcifications occurred more extensively in mitral position (p=0.0031). Creep of the stent was significantly greater in mitral position (p=0.0324). Since the model of our study removed other individual factors, we may conclude that there is evidence for an earlier and more extensive calcific degeneration in the mitral than in the aortic position.

HTLV infection in ELISA-negative blood donors.

Human T lymphotropic viruses (HTLVs) have a limited spread in the general populations of Western countries. Consequently, the transfusional risk for HTLV is consider to be low in Italy and the screening for anti-HTLV-I/II antibodies has not yet been introduced. In 1992, 1087 blood donors attending a transfusional center in northern Italy underwent anti-HTLV-I/II screening carried out by means of two different ELISA tests. Eleven individuals who were negative at the first test were borderline at the second, eight of them showing reactivity to Western blot (WB). Polymerase chain reaction (PCR) for the detection of HTLV DNA, subsequently performed on the peripheral blood mononuclear cells of these 11 subjects, was positive in the same 8 WB-reactive donors. Five of them were infected by HTLV-II, and three by HTLV-1. Our results confirm that the sensitivity of the ELISA tests actually used for the detection of HTLV-I/II antibodies is low, and that HTLV-infected blood donors may be frequently undetected. Moreover, in our study population, the prevalence of HTLV infection (0.73%) was greater than that which might be expected from the existing seroepidemiological data in Italy.

Anticoagulant protein C activity in non-insulin-dependent diabetic patients with normoalbuminuria and microalbuminuria.

Microalbuminuria in diabetic patients is associated with an increased cardiovascular risk which is not completely explained by an excess of conventional cardiovascular risk factors. A depression of physiologic inhibitors of blood coagulation could contribute to a thrombophilic state and to cardiovascular complications: data on protein C in diabetic patients are controversial, and no information exists about protein C activity in non-insulin-dependent diabetic patients or its relation to the microalbuminuric state. The aim of this study was to assess protein C activity in non-insulin-dependent diabetic patients with and without microalbuminuria. Protein C activity was determined (Protein C Reagent, Boehringer Mannheim, Germany) in 29 non-insulin-dependent diabetic patients with microalbuminuria (group A, > 20 micrograms/min), 33 non-insulin-dependent diabetic patients with normoalbuminuria (group B), and in 36 non-diabetic healthy blood donors as a control group (group C). The groups were matched for sex, and no difference in age, body mass index, blood pressure, glycated haemoglobin or known duration of diabetes was observed between groups A and B. Protein C activity was similar in the three groups (mean +/- SD): group A, 106.9% +/- 25.2%; group B, 109.3% +/- 27.6%; group C, 103.1% +/- 18.9%; F value 0.58, NS. Protein C activity did not correlate significantly with body mass index, glycated haemoglobin, known duration of diabetes, age or albumin excretion rate in any of the groups or in the diabetic patients as a whole. No significant difference in protein C activity was observed in patients taking other therapy (diet, oral agents, insulin).(ABSTRACT TRUNCATED AT 250 WORDS)

[Clinical usefulness of the immunophenotypic study of circulating lymphocytes in leukemic lymphoproliferative diseases]. / Considerazioni sulla utilità clinica dello studio immunofenotipico dei linfociti circolanti nelle malattie linfoproliferative leucemizzate.

The immunophenotypes (IF) on peripheral lymphocytes of 24 B-CLL in different stage, 2 PLL and 14 leukemic B-non Hodgkin lymphomas were investigated. As regard to B-CLL and PLL, the results are similar to those reported so far. In stage A and B of B-CLL the IF appear less variable than in advanced stages where a decrease of CD21+ and an increase of both CD25+ and CD38+ lymphocytes were observed. In the lymphocytic, small cleaved cell lymphomas and splenic lymphomas, the peripheral IF correspond to the theoretical ones of respective lymphoma tissues. On the contrary they disagree in three cases of large cells, mixed small and cleaved cell, immunoblastic lymphomas. These features are discussed.

The discriminating analysis in the differential diagnosis of monoclonal gammopathies.

The clinical diagnosis is not always easy in monoclonal gammopathies. Therefore we used discriminating analysis to obtain diagnosis statistically sure. The parameters considered were kappa-lambda ratio, marrow plasma cells percentage and labeling index, CD3, CD4, CD8 lymphocytic absolute values. The plasma cells percentage and their labeling index make the differential diagnosis between MM and MGUS or SMM and MGUS feasible and quite correct. Additional immunological parameters should be used for the diagnosis between SMM and MM.

[Antibiotic prophylaxis in cardiovascular surgery: comparison of sulbactam-ampicillin and cefuroxime]. / Profilassi antibiotica in chirurgia cardiovascolare: confronto fra sulbactam/ampicillina e cefuroxima.

A total of 200 patients (131 males and 69 females), scheduled for cardiovascular surgery were randomly assigned to receive either sulbactam/ampicillin 1 g IV of cefuroxime 2 g IV before the surgical incision and then, postoperatively, 8-hourly x 3 days. There were five failure of prophylaxis (all in the cefuroxime group): 3 sternal incision abscesses (1 Pseudomonas aeruginosa and 2 Staphylococcus epidermidis), one urinary tract infection (Staphylococcus aureus) and one Micrococcus pneumoniae. Tolerance to both antibiotics was excellent. In our sample of patients, the efficacy and safety of sulbactam/ampicillin were not different from those of cefuroxime in prophylaxis in cardiovascular surgery.

The De Vega tricuspid annuloplasty. Perioperative mortality and long term follow-up.

One hundred and fifty-three patients undergoing De Vega tricuspid annuloplasty, with or without other associated cardiac procedures between January, 1979, and June, 1987, were evaluated. There were 136 hospital survivors. The follow-up was 98.1% complete for a mean of 3.7 years/patient. Operative mortality was 11.1%; preoperative NYHA class and length of CPB were significant risk factors of perioperative mortality. The actuarial survival of operative survivors at 9 years was 73.5 +/- 11.8%. There were 7 late cardiac deaths among a total of 12 late deaths. Eleven patients required reoperation (2.1 +/- 0.6% patient-year). In seven patients it was necessary for recurrence of tricuspid regurgitation; six of these had also a mitral prosthesis malfunction or a periprosthetic leak. Residual tricuspid regurgitation was judged as mild, moderate or severe in 29.9%, 11.9% and 4.3% of the patients respectively. De Vega tricuspid annuloplasty is the method of choice for mild and moderate tricuspid insufficiency; in selected cases, with a more severe degree of regurgitation, better results could be achieved with a different surgical approach.

Kappa/lambda ratio on peripheral blood lymphocytes and bone marrow plasma cell labeling index in monoclonal gammopathies.

Bone marrow plasma cell labeling index (L.I.), kappa/lambda ratio, CD4+ and CD8+ subpopulations were studied in patients with smoldering multiple myeloma (SMM), active myeloma (MM) and monoclonal gammopathy of undetermined significance (MGUS). The loss of the light chain isotype suppression (LCIS) and a high labeling index (L.I.) allowed us to distinguish all MM patients from SMM patients. On the contrary, a low L.I. and a normal kappa/lambda ratio were found in most kappa and lambda MGUS. A significant difference in the kappa/lambda ratio was noted between MGUS and K-SMM. A significant decrease in CD4+ and a significant increase in CD8+ were not observed in patients with LCIS. The kappa/lambda ratio together with the plasma cell L.I. could be useful parameters for distinguishing active MM from SMM, especially in the cases with a border line L.I.