Adesão a um protocolo de profilaxia de úlcera de estresse em pacientes críticos: estudo de coorte prospectiva / Adherence to a stress ulcer prophylaxis protocol by critically ill patients: a prospective cohort study

RESUMO Objetivo: Avaliar a adesão ao protocolo de profilaxia de úlcera de estresse em pacientes críticos de um hospital universitário terciário. Métodos: Neste estudo de coorte prospectiva, incluímos todos os pacientes adultos admitidos às unidades de terapia intensiva clínica e cirúrgica de um hospital terciário acadêmico. Nosso único critério de exclusão foi a presença de sangramento gastrointestinal alto quando da admissão à unidade de terapia intensiva. Colhemos as variáveis basais e indicações de profilaxia de úlcera de estresse, segundo o protocolo institucional, assim como o uso de profilaxia. Nosso desfecho primário foi a adesão ao protocolo de profilaxia de úlcera de estresse. Os desfechos secundários foram uso apropriado da profilaxia de úlcera de estresse, incidência de sangramento gastrointestinal superior e fatores associados com o uso apropriado da profilaxia de úlcera de estresse. Resultados: Foram incluídos 234 pacientes no período compreendido entre 2 de julho e 31 de julho de 2018. Os pacientes tinham idade de 52 ± 20 anos, sendo 125 (53%) deles cirúrgicos, e o SAPS 3 médio foi de 52 ± 20. No seguimento longitudinal, foram estudados 1.499 pacientes-dias; 1.069 pacientes-dias tiveram indicação de profilaxia de úlcera de estresse, e 777 pacientes-dias tiveram uso profilático (73% de adesão ao protocolo de profilaxia de úlcera de estresse). Dentre os 430 pacientes-dias sem indicações de profilaxia de úlcera de estresse, 242 envolveram profilaxia (56% de uso impróprio de profilaxia de úlcera de estresse). O total de uso apropriado de profilaxia de úlcera de estresse foi de 64%. Fatores associados com prescrição adequada de profilaxia de úlcera de estresse foram ventilação mecânica, com RC 2,13 (IC95% 1,64 - 2,75), e coagulopatia, com RC 2,77 (IC95% 1,66 - 4,60). A incidência de sangramento do trato gastrointestinal superior foi de 12,8%. Conclusão: A adesão ao protocolo de profilaxia de úlcera de estresse foi baixa, e o uso inadequado de profilaxia de úlcera de estresse foi frequente nesta coorte de pacientes críticos.

ABSTRACT Objective: To evaluate adherence to the stress ulcer prophylaxis protocol in critically ill patients at a tertiary university hospital. Methods: In this prospective cohort study, we included all adult patients admitted to the medical and surgical intensive care units of an academic tertiary hospital. Our sole exclusion criterion was upper gastrointestinal bleeding at intensive care unit admission. We collected baseline variables and stress ulcer prophylaxis indications according to the institutional protocol and use of prophylaxis. Our primary outcome was adherence to the stress ulcer prophylaxis protocol. Secondary outcomes were appropriate use of stress ulcer prophylaxis, upper gastrointestinal bleeding incidence and factors associated with appropriate use of stress ulcer prophylaxis. Results: Two hundred thirty-four patients were enrolled from July 2nd through July 31st, 2018. Patients were 52 ± 20 years old, 125 (53%) were surgical patients, and the mean SAPS 3 was 52 ± 20. In the longitudinal follow-up, 1499 patient-days were studied; 1069 patient-days had stress ulcer prophylaxis indications, and 777 patient-days contained prophylaxis use (73% stress ulcer prophylaxis protocol adherence). Of the 430 patient-days without stress ulcer prophylaxis indications, 242 involved prophylaxis (56% inappropriate stress ulcer prophylaxis use). The overall appropriate use of stress ulcer prophylaxis was 64%. Factors associated with proper stress ulcer prophylaxis prescription were mechanical ventilation OR 2.13 (95%CI 1.64 - 2.75) and coagulopathy OR 2.77 (95%CI 1.66 - 4.60). The upper gastrointestinal bleeding incidence was 12.8%. Conclusion: Adherence to the stress ulcer prophylaxis protocol was low and inappropriate use of stress ulcer prophylaxis was frequent in this cohort of critically ill patients.

Diretrizes da Sociedade Portuguesa de Cuidados Intensivos para profilaxia da úlcera de estresse na unidade de terapia intensiva / Sociedade Portuguesa de Cuidados Intensivos guidelines for stress ulcer prophylaxis in the intensive care unit

RESUMO O paciente crítico corre risco de desenvolver úlceras de estresse do trato gastrintestinal. Antiácidos e antiulcerosos de diferentes classes são frequentemente prescritos para reduzir a incidência de hemorragia gastrintestinal clinicamente significativa associada à úlcera de estresse. No entanto, o uso indiscriminado deste tipo de profilaxia em todos os pacientes admitidos a unidades de terapia intensiva não só não se justifica, como tem potenciais efeitos adversos e implicações de custo. As presentes diretrizes da Sociedade Portuguesa de Cuidados Intensivos resume a evidência atual e fornece seis afirmações clínicas e um algoritmo com o objetivo de fornecer uma política padronizada para prescrição de profilaxia da úlcera estresse em unidades de terapia intensiva.

ABSTRACT Critically ill patients are at risk of developing stress ulcers in the upper digestive tract. Agents that suppress gastric acid are commonly prescribed to reduce the incidence of clinically important stress ulcer-related gastrointestinal bleeding. However, the indiscriminate use of stress ulcer prophylaxis in all patients admitted to the intensive care unit is not warranted and can have potential adverse clinical effects and cost implications. The present guidelines from the Sociedade Portuguesa de Cuidados Intensivos summarizes the current evidence and gives six clinical statements and an algorithm aiming to provide a standardized prescribing policy for the use of stress ulcer prophylaxis in the intensive care unit.

Activity of orbignya phalerata and euterpe edules in the prevention and treatment of peptic ulcer in rats / Atividade de orbignya phalerata e euterpe edules na prevenção e tratamento da úlcera péptica em ratos

ABSTRACT Background: Peptic ulcer is considered a public health problem associated with loss of quality of life. Does not exist optimal therapeutic regimen. The search for alternative treatments using foods or plants that may assist in gastric protection may become marked in this population because of their easy access and low cost. Aim: To study the antiulcerogenic activity of extracts of Orbignya phalerata (babaçu) and Euterpe edules (juçara) in Wistar rats after induction of peptic ulcer, compared with Omeprazole. Method: Forty Wistar rats were distributed into four groups: group I, II, III, IV (10 rats each) subjected to extract of Orbignya phalerata, Euterpe edules, Omeprazole and ethanol, respectively. Each group of 10 rats was divided into subgroups of five for prophylaxis and therapeutic study. Results: The pre-treatment with juçara extract has provided a significant protection against peptic ulcer induced by ethanol. In the prophylactic subgroup, Omeprazole resulted in protection. In addition to protection against peptic ulcer, inflammation and neocapillarization were also variables with a statistical significance in the prophylaxis subgroups using omeprazole and juçara. In the therapeutic subgroup, omeprazole, juçara and babaçu were statistically different as for protection against the presence of inflammation and the healing of ulcers. Conclusion: The extracts of juçara and babaçu behaved as the omeprazole, evidencing the therapeutic activity of these extracts.

RESUMO Racional: A úlcera péptica é considerada problema de saúde pública, associada a perda na qualidade de vida. Não existe esquema terapêutico ideal. A busca de tratamentos alternativos, com uso de alimentos ou plantas que possam ajudar na proteção gástrica, torna-se viável à população, por ser de fácil acesso e baixo custo. Objetivo: Estudar a atividade antiulcerogênica dos extratos de Orbignya phalerata (babaçu) e Euterpe edules (juçara) em ratos Wistar após indução de úlcera péptica e comparar com omeprazol. Método: Quarenta ratos Wistar foram distribuídos em quatro grupos: grupo I, II, III, IV (10 ratos) submetidos ao extrato de Orbignya phalerata, Euterpe edules, omeprazol e álcool etílico, respectivamente. Cada grupo de 10 ratos foi dividido em subgrupos de cinco para estudar a profilaxia e tratamento. Resultados: O pré-tratamento com extrato de juçara forneceu proteção significativa contra a ulceração péptica induzida pelo etanol, assim como o omeprazol. Além da proteção contra úlcera péptica, inflamação e neocaplilarização também foram variáveis com significância estatística nos subgrupos profilaxia do omeprazol e da juçara. No subgrupo terapêutico, o omeprazol, juçara e babaçu teve diferença estatística para proteção contra a presença de inflamação e cicatrização de úlcera. Conclusão: Os extratos de juçara e babaçu se comportaram como omeprazol, evidenciando o poder terapêutico desses extratos.

Evaluation of staff education on ventilator bundle compliance in university Kebangsaan Malaysia medical centre [UKMMC] intensive care unit [ICU]

Ventilator associated pneumonia [VAP] has been associated with high morbidity and mortality rates especially in critically ill patients. Implementing the "ventilator bundle" series of interventions serves a pivotal role in reducing the incidence of VAP. This study was carried out to review compliance of the staff in UKMMC ICU towards ventilator bundle from August 2010 to March 2011. All medical and nursing staffs in ICU were given education by means of lectures, pamphlets, posters, and refresher sessions which were implemented in between two periods of assessment Compliance was assessed on daily basis at random throughout a 140-day course divided into 70 pre-educational days and 70 post-educational days. Pre-educational overall compliance achieved was 38.4%. Compliance of individual component was: [1] head of bed [HOB] > 30 degrees: 43.6%, [2] Peptic ulcer disease [PUD] prophylaxis: 88.6% [3] Deep venous thrombosis [DVT] prophylaxis: 86.7% [4] Sedation vacation: 98.1% [5] Oral care: 96.7%. Post-educational overall compliance achieved was 65.0% with each individual component achieving 67.6%, 97.7%, 89.6%, 97.4%, and 99.0% respectively. There were statistically significant increases [p<0.05] in overall compliance and 3 individual components i.e. HOB elevation, PUD prophylaxis and oral care. Implementation of education had resulted in improved compliance of some, but not all components of the ventilator bundle. Continuous staff education is recommended to ensure further improvement and maintenance in compliance amongst the multidisciplinary team who manage patients in ICU

Helicobacter pylori infection in India from a western perspective.

Helicobacter pylori is a common bacterial infectious disease whose manifestations predominately affect the gastrointestinal tract. India is the prototypical developing country as far as H. pylori infection is concerned and more than 20 million Indians are estimated to suffer from peptic ulcer disease. Considering the high level of medical research and of the pharmaceutical industry, one would expect that India would be the source of much needed information regarding new therapies and approaches that remain effective in the presence of antimicrobial resistance, new methods to reliably prevent reinfection, and the development of therapeutic and preventive vaccines. Here we discuss H. pylori as a problem in India with an emphasis on H. pylori infection as a serious transmissible infectious disease. We discuss the pros and cons of eradication of H. pylori from the entire population and come down on the side of eradication. The available data from India regarding antimicrobial use and resistance as well as the effectiveness of various treatments are discussed. Rigorous ongoing studies to provide current regional antibiotic resistance patterns coupled with data concerning the success rate with different treatment regimens are needed to guide therapy. A systematic approach to identify reliably effective (e.g., 90% or greater treatment success) cost-effective regimens is suggested as well as details of regimens likely to be effective in India. H. pylori is just one of the health care problems faced in India, but one where all the resources are on hand to understand and solve it.

Effect of Zinc Salts on Acid Secretion and Peptic Ulceration in Albino Rats.

The present study was carried out to see the effect of two zinc salts i.e zinc sulphate and zinc chloride on gastric ulcers induced by stress, pylorus ligation and aspirin in albino rats. The rats were divided into two main groups (zinc sulphate 30, 60, 90 mg/kg i.p and zinc chloride 10 and 20mg/kg i.p). They were further sub-divided into three sub-groups dependant on ulcer model i.e stress, pylorus ligation and aspirin induced ulcers. It was found that zinc sulphate and zinc chloride had a dose dependant reduction in ulcer index in all three models of gastric ulceration. Also, both the salts had anti acid secretory effect, raised pH of gastric secretion and reduced total acidity significantly. Thus zinc salts prevent gastric ulceration. Probably this effect is mediated by anti acid secretory action.

Synthesis and pharmacological evaluation of tyrosine and glycine prodrugs of aceclofenac

The gastrointestinal toxicity associated with aceclofenac [AC] can be reduced by synthesis of its prodrugs. It involves condensing the carboxylic acid group of AC with methyl esters of amino acids like tyrosine and glycine to give tyrosine conjugated aceclofenac [3a] and glycine conjugated aceclofenac [3b], respectively. Physicochemical characterization of the prodrugs by various analytical and spectral methods was carried out. In vitro hydrolysis in simulated gastric fluid [SGF], simulated intestinal fluid [SIF] and human plasma showed an encouraging hydrolysis rate in SIF and human plasma than in SGF. This indicated that the prodrugs do not break in stomach but release aceclofenac in SIF and human plasma. The pharmacological evaluations showed a comparable increase in anti-inflammatory activity and marked reduction of ulcer index for the prodrugs. Normal histological findings revealed that the prodrugs are not producing any ulceration in the gastric region. The prodrugs thus possess better pharmacological response than the parent drug

Profilaxia para úlcera de estresse em pacientes internados em UTI pediátrica / Stress ulcer prophylaxis in pediatric intensive care units

OBJETIVO: Avaliar a utilização de profilaxia para úlcera de estresse (UE), em pacientes internados, de cinco unidades de terapia intensiva pediátrica (UTIP) de Porto Alegre (RS). MÉTODOS: Estudo multicêntrico, prospectivo, transversal, observacional. Foram avaliados os prontuários dos pacientes internados em dia definido para visitação, entre abril de 2006 e fevereiro de 2007, excluindo os avaliados em visitas anteriores e aqueles com hemorragia digestiva alta na admissão. Foram avaliados a idade, o gênero, o diagnóstico na admissão, a gravidade da doença, o uso de profilaxia para UE, a sua justificativa e o medicamento profilático utilizado como primeira escolha. As variáveis foram descritas como frequências absoluta e relativa, ou média e desvio padrão/mediana, e intervalo interquartil (IQ). Os testes qui-quadrado de Pearson, de tendência linear, ou exato de Fisher foram utilizados para avaliar as associações. O nível de significância adotado foi de 5 por cento, sendo estatisticamente significativo p < 0,05. RESULTADOS: Foram avaliados 398 pacientes, sendo 57 por cento do gênero masculino. A mediana de idade foi de 16 meses (IQ4-65) e mediana de permanência em UTIP foi de 4 dias (IQ1-9). O principal motivo de internação foi doença respiratória (32,7 por cento). Usaram profilaxia 77,5 por cento dos pacientes, variando de 66 a 91 por cento; a ventilação mecânica (22,3 por cento) foi a justificativa mais prevalente, seguida de rotina informal do serviço (21,4 por cento). Apenas uma das UTIP tinha protocolo assistencial para profilaxia de UE. A ranitidina foi o medicamento mais empregado (84,5 por cento). CONCLUSÕES: O uso de profilaxia para UE foi prática frequente nas UTIP avaliadas, sendo a ranitidina a droga de escolha. Entre as justificativas, a ventilação mecânica e o uso baseado em rotinas institucionais foram as mais prevalentes.

OBJECTIVE: To assess use of stress ulcer prophylaxis in patients admitted to five pediatric intensive care units (PICUs) in Porto Alegre, Brazil. METHODS: This was a multicenter, prospective, cross-sectional observational study. PICUs were visited on randomly defined days between April 2006 and February 2007, and the medical records of admitted patients were reviewed. Patients whose records had been previously assessed were excluded, as were those with upper gastrointestinal bleeding on admission. Data were collected on age, gender, admission diagnosis, severity of illness, administration of stress ulcer prophylaxis, rationale for prophylaxis, and first-line prophylactic agent of choice. Variables were described as absolute and relative frequencies, mean and standard deviation, or median and interquartile range as appropriate. Pearson's chi-square test for linear trend or Fisher's exact test were used to assess possible associations. The level of significance was set at 5 percent (p < 0.05). RESULTS: 398 patients (57 percent male) were assessed [median age, 16 months (IQR 4-65); median length of PICU stay, 4 days (IQR 1-9)]. Respiratory illness was the main reason for admission (32.7 percent). Most patients received stress ulcer prophylaxis (77.5 percent; range, 66-91 percent). Mechanical ventilation (22.3 percent) was the most common rationale provided, followed by informal routine use of prophylaxis (21.4 percent). Only one of the participating PICUs had a specific care protocol for use of stress ulcer prophylaxis. Ranitidine was the most commonly used drug (84.5 percent of cases). Evidence of minor gastrointestinal bleeding was found in 3 percent of patients; none had clinically significant bleeds. CONCLUSIONS: Administration of stress ulcer prophylaxis is a common practice in the participating PICUs, with ranitidine the most commonly used drug. Among the various rationales provided, mechanical ventilation and informal routine use were the most prevalent.

Helicobacter pylori infection in India from a western perspective.

Helicobacter pylori is a common bacterial infectious disease whose manifestations predominately affect the gastrointestinal tract. India is the prototypical developing country as far as H. pylori infection is concerned and more than 20 million Indians are estimated to suffer from peptic ulcer disease. Considering the high level of Medicine and of the pharmaceutical industry, one would expect that India would be the source of much needed information regarding new therapies and approaches that remain effective in the presence of antimicrobial resistance, new methods to reliably prevent reinfection, and the development of therapeutic and preventive vaccines. Here, we discuss H. pylori as an Indian problem with an emphasis on H. pylori infection as a serious transmissible infectious disease. We discuss the pros and cons of eradication of H. pylori from the entire population and come down on the side of eradication. The available data from India regarding antimicrobial use and resistance as well as the effectiveness of various treatments is discussed. Rigorous ongoing studies to provide current regional antibiotic resistance patterns coupled with data concerning the success rate with different treatment regimens are needed to guide therapy. A systematic approach to identify reliably effective (e.g., 90% or greater treatment success) cost-effective regimens is suggested as well as details of regimens likely to be effective in India. H. pylori is just one of the health care problems faced in India, but one where all the resources are on hand to understand and solve it.

[Inhibitory effect of green and black teas ethyl acetate extracts on helicobacter pylori the causative agent of peptic ulcers]

Helicobacter pylori is the etiological agent in peptic ulcers and gastric carcinoma. The growing problem of antibiotic resistance by this organism demands the search for novel compounds from plant based sources. Tea is amongst the most popular beverages in Iran. There is no investigation regarding the inhibitory effects of tea extracts on Helicobacter pylori growth or its urease production and function. This study was conducted to evaluate the inhibitory effects of tea ethyl acetate extracts on Helicobacter pylori growth and its urease. This was an experimental study [2008, Science and Research campus] in which the extraction of samples was performed by Soxhelet extractor in methanol/water [1:1] mixture as a solution followed by final re-extraction with ethyl acetate. The minimum inhibitory concentrations of black and green tea extracts were assessed by broth dilution method and examination of urease function performed by Mc Laren method. The urease production was detected on 12% SDS polyacrylamide gel electrophoresis. Both extracts showed inhibitory effects on H. pylori growth, urease function and its production. Urease production was completely inhibited by both black and green tea extracts at concentrations of 3.5mg/ml and 2.5mg/ml, respectively. Also, the growth of H. pylori was inhibited by black tea extract at concentration of 4.5mg/ml and at 3.5mg/ml of green tea extract. Based on inhibitory effects of tea extracts on H. pylori shown in the present study, it seems that both tea extracts in particular the green tea have the potential to reduce the H. pylori population and possibly prevent from chronic gastritis and peptic ulceration

review of medicinal plants exhibiting potential anti-ulcer activity

Plants have been used for medicinal purposes from the time immemorial. Medicinal plants are an indispensable source of new chemical substances with potential therapeutic effects. Their chemical compounds may serve as lead for the development of new drugs. In the present communication a review of the plants exhibiting antiulcer activity is presented

Effects of saffron and its active constituents, crocin and safranal, on prevention of indomethacin induced gastric ulcers in diabetic and nondiabetic rats

Saffron is the dried stigmata of the flowers of saffron [Crocus sativus L., Iridaceae]. Saffron is well known for the treatment of gastric disorders in traditional medicine. In the search for new potential antiulcer agents, the effects of the ethanol extract of saffron and its active constituents crocin and safranal as compared with omeprazole against gastric ulcer induced by indomethacin in non-diabetic and streptozocin diabetic rats were studied. The effects of pretreatment with saffron extract [25, 100 or 250 mg/kg, p.o.], crocin [2.5, 5 or 10 mg/kg, p.o.] and safranal [0.25, 2, 5 ml/kg, p.o.] and omeprazole [30 mg/kg, p.o.] 30 min before administration of indomethacin [40 mg/kg, p.o. in non-diabetic rats and 15 mg/kg, p.o. in diabetic rats] on gastric lesions, increase of lipid peroxidation and decrease of glutathione levels induced by indomethacin in non-diabetic and diabetic rats were evaluated. Saffron extract, crocin, safranal and omeprazol prevented the gastric lesions, increase of lipid peroxidation and decrease of glutathione levels induced by indomethacin in non-diabetic and diabetic rats as compared with the control group [P < 0.01]. The effects of saffron extract, crocin and safranal on the gastric ulcer index, lipid peroxidation and glutathione levels were comparable to omeprazole. Saffron, crocin and safranal may prevent the gastric mucosa damage due to their antioxidant properties by increasing the gluthatione levels and diminishing the lipid peroxidation in the rat gastric mucosa

Frequency of peptic ulcer in patients having decompensated cirrhosis of liver

Hepatitis B and C are spreading like an endemic disease in developing countries like Pakistan, due to many reasons. The late diagnosis of HCV and HBV infection has resulted in increased number of patients with decompensated liver disease. One of the common complications of cirrhosis is upper GI bleed caused by peptic ulceration in UK. Local data shows peptic ulceration was the second commonest of the lesions causing upper GI bleed after esophageal varices. Present study was conducted to determine the frequency of peptic ulcer in patients having decompensated cirrhosis of liver presenting with upper GI bleed, also to emphasize the importance of primary prophylaxis with proton pump inhibitors for prevention of peptic ulcer in these patients. Descriptive study. MU-III Allied Hospital Faisalabad. Hundred consecutive patients having decompensated cirrhosis of liver were selected according to pre designed proforma and endoscopy was performed to determine the site of bleeding, from Jun to November 2007. This study showed peptic ulcer as the second most important cause of upper GI bleed [34%] after esophegeal varices [57%], also decompensate cirrhotics have increased incidence of peptic ulceration [34%] as compared to general population [8.3%]. Also significant relationship between source of upper GI bleed and serum albumin level in patients having decompensated cirrhosis of liver. [P value = .019] was found. There is definitely an increased frequency of bleeding peptic ulcer in patients having decompensated liver cirrhosis as compared to general population necessitating the need of primary prophylaxis of peptic ulcer with proton pump inhibitor in decompensated cirrhotics

[ recurrence rate of helicobacter pylori infection 2 years after eradication]

Helicobacter pylori [HP] has an important role in the pathogenesis of gastritis, peptic ulcer and gastric cancer. The eradication of HP results in the prevention of the recurrence of peptic ulcer and its complications. In developed countries, the recurrence of infection is unusual and rare after the successful eradication of HP infection, however it is likely in developing countries and the rate is variable in different parts of the world. The aim of this study was to evaluate the recurrence rate of HP infection, at least 2 years after the successful eradication of HP infection. Those patients with documented duodenal ulcer [according to endoscopy] and HP infection [according to rapid urease test] were included in this study. The patients were treated with different HP eradication regimens and the eradication was proved, using the 14C Urea Breathing Test [UBT]. The patients were re-evaluated with 14C UBT at least 2 years after the first negative UBT result [mean duration: 36 months, ranging from 24 to 30 months]. Eighty patients [51 males and 29 females] were included in the study. Mean age was 40.53 +/- 10.99 Although HP eradication was performed successfully, the recurrence rate was significant. This can influence the therapeutic and the following up strategies of the patients

Vacunas en desarrollo: Helicobacter pylori / Vaccines under development: Helicobacter pylori

La infección con Helicobacter pylori es la causa de patologías gastrointestinales como úlcera péptica y cáncer gástrico. Una vacuna contra H. pylori es relevante debido a la alta prevalencia de la infección y a la morbi-mortalidad asociada a ésta en nuestro país. El uso masivo de terapias antimicrobianas actuales no es una estrategia factible, especialmente en países en desarrollo, en parte debido al alto costo, los múltiples efectos adversos, el riesgo de reinfección y la emergencia de resistencia a los antimicrobianos. Numerosos modelos animales han sido utilizados durante años para determinar el curso de la infección por H. pylori y explorar la factibilidad de una vacuna, ya sea para erradicar o prevenir la infección. Dichos modelos, con la posible excepción de los monos, no son suficientes para responder preguntas fundamentales debido a resultados contradictorios. Un modelo humano de infección por H. pylori debe ser desarrollado con el principal propósito de seleccionar vacunas óptimas. El objetivo final es el desarrollo de estudios de campos de vacunas candidatas, pero el estado actual del conocimiento no proporciona una metódica adecuada para seleccionar tales vacunas candidatas promisorias. Dichos estudios pueden ser diseñados para proporcionar información relevante sobre la inmunidad y patogénesis de la infección por H. pylori.

Hemorragia digestiva alta: análisis de 100 casos / Upper gastrointestinal bleeding: report of 100 cases

La hemorragia digestiva (HDA) es relativamente frecuente y su manejo varía de acuerdo a los distintos centros. El objetivo de este trabajo es evaluar nuestra incidencia de HDA comparando factores de riesgo con hallazgos endoscópicos e histopatológicos. A su vez el tratamiento recibido y el seguimiento posterior de los pacientes.

Enfermedad ulcerosa péptica / Peptic ulcerative disease

Se llama Síndrome Ulceroso Péptico Tipico, al conjunto de síntomas y signos, caracterizados por dolor urente o quemante localizado en epigastrio, que puede ser transfictivo a dorso, acompañado de sensación de vacio o hambre dolorosa, que aparece con el ayuno y calma con los alimentos no condimentado y que se presenta más o menos periódicamente (primavera, otoño, tension nerviosa).