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Biomedical subjects

R Morillas

Publications and source records attributed to R Morillas.

16 recordsLinked to original sources
PubMed2005

[Gasometric alterations in hospitalized cirrhotic patients].

BACKGROUND AND OBJECTIVES: Gas exchange alterations have been described in cirrhotic patients; but by the moment, a few prospective studies have focused in them. The aim of this study was to describe the frequency and severity of gasometric alterations in hospitalized cirrhotic patients, a their correlation with hepatocellular disfunction. PATIENTS AND METHODS: 50 consecutive cirrhotic patients (41 males) admitted for liver decompensation (ascites, liver encephalopathy, alcoholic hepatitis and upper gastrointestinal bleeding) without acute or chronic cardiopulmonary disfunction were included in the study. Patients were classified according with Child-Pugh score (A, n = 13; B, n = 21; C, n = 16). Severe alcoholic hepatitis (SAH) was confirmed in 7 patients. Arterial gasometry was performed in all patients before discharge. Contrast echocardiography was performed in any case of suspicion of hepatopulmonary syndrome (HPS). RESULTS: Light hypoxemia was observed (80.9 mmHg), without differences with Child-Pugh. Hypocapnia was significantly more evident in Child C than in A and B (31.2 +/- 3.1 vs. 38.1 +/- 4.3 y 36.3 +/- 5 mmHg; p < 0,05), respectively. Cirrhotic patients with SAH showed a significantly higher hypocapnia by comparison with others (31.2 +/- 3.1 vs. a 36.3+/-5 mmHg; p < 0.05). In multivariate analysis, independent prognostic variables for hypocapnica were plasmatic levels of protrombin time, albumin and sodium. HPS was confirmed in 8 patients (16%). CONCLUSIONS: The most prevalent gas exchange abnormality in cirrhosis was the alteration of alveolar-arterial oxygen tension gradient, directly correlated with hepatocellur disfunction. Hypocapnia could be a compensatory mechanism or the result of the activation of central respiratory centres by non-depurated substances by the liver.

Adaptation, Physiological↗
PubMed2000

Pre-treatment with prednisolone does not improve the efficacy of subsequent alpha interferon therapy in chronic hepatitis C.

BACKGROUND/AIMS: Alpha interferon administration is quite disappointing as a single therapy in chronic hepatitis C. A brief course of corticosteroid therapy might increase the effectiveness of subsequent alpha interferon administration, but data on this issue are controversial. METHODS: One hundred and fifty-six consecutive patients with chronic hepatitis C were randomly assigned to be treated blind with tapering doses of oral prednisolone or placebo for 4 weeks. Two weeks after cessation of therapy, patients received alpha interferon (3 MU t.i.w.) for 48 weeks and were followed for 24 additional weeks. Response was defined by the presence of normal alanine aminotransferase (ALT) and negative HCV-RNA in serum. RESULTS: ALT activity decreased during prednisolone administration and rebounded upon withdrawal in 38% of the patients treated with this drug. Significant changes in serum bilirubin were not observed. HCV-RNA serum concentration tended to increase during prednisolone administration and to decrease upon withdrawal. ALT and HCV-RNA did not change during administration of placebo. At the end of interferon administration, 33% of patients treated with prednisolone and 25% of those treated with placebo presented biochemical and virological response. At the end of post-treatment follow-up, response was maintained in 12% and 13% of patients treated with prednisolone or placebo respectively. Response was not related to ALT or HCV-RNA changes observed during the pre-interferon phase of the study. No adverse events related to prednisolone administration were observed. CONCLUSIONS: Prednisolone administration and withdrawal induced a rebound in ALT activity and a decrease in HCV-RNA serum concentration in about one third of the patients with chronic hepatitis C. However, these changes did not enhance the effectiveness of subsequent alpha interferon therapy.

Adult↗
PubMed1996

Low dose alpha interferon therapy can be effective in chronic active hepatitis C. Results of a multicentre, randomised trial.

BACKGROUND: There is some controversy concerning the efficacy of low dose alpha interferon therapy in chronic hepatitis C. AIMS: To evaluate the effectiveness of treatment with low doses of alpha interferon in chronic hepatitis C. PATIENTS: One hundred and forty one patients with anti-HCV positive chronic active hepatitis C from six hospitals were enrolled in the study. METHODS: Patients were randomised to treatment with 5 MU (group A) or 1.5 MU (group B) injections. The dose was reduced in responders from group A or increased in non-responders from group B to maintain treatment with the minimal effective dose. Patients were treated for 48 weeks and followed up for 24 additional weeks with no treatment. Normalisation of alanine aminotransferase (ALT) was used to evaluate response. RESULTS: A sustained response was seen in eight patients from group A (12%) and in 15 (21%) from group B. This difference was not statistically significant. Increasing the dose of interferon led to sustained response in only five of 58 patients (9%) from group B who did not respond to 1.5 MU injections. In contrast, 15 of 21 patients (71%) in whom ALT remained normal with 1.5 MU injections developed a sustained response. By multivariate analysis sustained response seemed associated with young age and was more frequent in patients with genotype 3 HCV infection. Sustained response was preceded by a rapid normalisation of ALT and was inversely related to the amount of alpha interferon necessary to maintain ALT at low values during treatment. CONCLUSIONS: Some patients with chronic hepatitis C are very sensitive to alpha interferon and can be successfully treated with low doses. Treatment with higher doses may be effective in a minority of patients who do not respond to low doses.

Alanine Transaminase↗
PubMed1993

Clinical and nutritional factors predictive of plasma lipid unsaturation deficiency in advanced liver cirrhosis: a logistic regression analysis.

AIM: To identify those clinical and nutritional factors associated with plasma lipid unsaturation deficiency in cirrhosis. METHODS: Fatty acid profiles of plasma phospholipids (PL) and cholesteryl esters (CE) were measured in 101 inpatients with advanced cirrhosis and in 44 age- and sex-matched healthy controls. Double-bond index (DBI) was calculated for each fraction and binarily categorized in each patient using the 5th percentile of the control group as the cut-off limit. The association of 12 routine clinical, biological, and nutritional variables with derangement of each DBI was multivariately assessed by means of stepwise logistic regression analysis. RESULTS: The DBI of PL and CE were below the 5th percentile of the control group in 60 and 68 of 101 cirrhotic patients, respectively. After multivariate analyses, the variables found to be independent predictors of impaired unsaturation were: 1) The presence of moderate/severe malnutrition (odds ratio: 1.3-8.0 (95% CI); p < 0.05) and serum tau-GT > 1 mukat/L (odds ratio: 0.2-1.0; NS) for plasma PL, and 2) the presence of moderate/severe malnutrition (odds ratio: 1.8-17.4; p < 0.05), serum bilirubin > 50 mumol/L (odds ratio 1.7-14.5; p < 0.05) and serum tau-GT > 1 mukat/L (odds ratio 0.1-1.1; NS) for CE. CONCLUSION: Malnutrition appears to be a major factor for impaired lipid unsaturation in advanced cirrhosis. Thus, the possibility of improving plasma lipid unsaturation in these patients by means of nutritional support should be further investigated.

Adult↗
PubMed1993

Short-term prognosis of cirrhotics with spontaneous bacterial peritonitis: multivariate study.

In order to identify the predictive factors of hospital mortality in cirrhotics with spontaneous bacterial peritonitis (SBP), we studied 64 patients who fulfilled the accepted diagnostic criteria. All cases were treated with cefotaxime up to 2 days after the infection was considered cured (7.7 +/- 2.9 days). Eleven patients (17%) died while in hospital, six of them before SBP was cured. After uni- and multivariate analyses, only seven routine clinical, biological, and bacteriological variables studied were independently associated with hospital mortality. These were: the presence of upper gastrointestinal bleeding at admission (beta = 2.01), the absence of abdominal pain as presenting symptom (beta = -1.29), the polymorphonuclear count (%) in the ascites (beta = 0.48), prothrombin rate (beta = -0.22), and serum Na (beta = -0.64), creatinine (beta = 0.50), and cholesterol (beta = -0.68). When the equation obtained was computed in a randomly selected sample of the patients studied, it correctly predicted the outcome in 92.3% of the cases. We conclude that short-term outcome of SBP patients depends on the existence of recent gastrointestinal bleeding, the severity of SBP, and the degree of liver and renal failure. The prognostic value of this model needs prospective validation in a new series of patients.

Bacterial Infections↗
PubMed1992

Prognostic factors of hepatic encephalopathy after portacaval anastomosis: a multivariate analysis in 50 patients.

Portacaval anastomosis has proved to be effective in avoiding active and recurrent hemorrhage from gastroesophageal varices in liver cirrhosis. However, hepatic encephalopathy is the most common and serious complication of this procedure. The aim of this study was to investigate by multivariate analysis the predictive factors of development of hepatic encephalopathy in 50 Child's A and B cirrhotic patients whose variceal bleeding was treated with emergency (n = 17) or elective (n = 33) portacaval anastomosis. The etiology of the cirrhosis was alcoholic in 74% of cases. The mean follow-up was 22.7 +/- 16.6 months (range 1-60 months). The 2-yr probability of suffering from at least one episode of hepatic encephalopathy in the overall group was 43%. The multivariate analyses (Cox's regression method) of 37 variables based upon clinical history, physical examination, and laboratory data disclosed that only five of these variables had independent predictive value: need for diuretic treatment in the days prior to surgery, absence of hepatomegaly, and serum levels of total bilirubin, gamma-globulin, and hemoglobin. According to the contribution of each one of these factors to the final model, a prognostic index was obtained which allowed the division of patients in two different groups of risk for developing hepatic encephalopathy (20% and 74%, respectively, after 2 yr of surgery; p = 0.0002). This index may help to better choose those candidates for portacaval anastomosis.

Adult↗
PubMed1991

Paracentesis with intravenous infusion of albumin as compared with peritoneovenous shunting in cirrhosis with refractory ascites.

BACKGROUND: There is no satisfactory treatment for refractory ascites in patients with cirrhosis. Both peritoneovenous shunts and paracentesis have been used, but there is uncertainty about their relative merits. METHODS: We studied 89 patients with cirrhosis and refractory ascites who were randomly assigned to receive either repeated large-volume paracentesis plus intravenous albumin or a LeVeen peritoneovenous shunt. Patients in the paracentesis group in whom recurrent tense ascites developed during follow-up were treated with paracentesis, and those in the peritoneovenous-shunt group with diuretic agents or by the insertion of a new shunt if there was shunt obstruction. RESULTS: During the first hospitalization, ascites was removed in all 41 patients in the paracentesis group and in 44 of the 48 patients in the peritoneovenous-shunt group. The mean (+/- SD) duration of hospitalization in the two groups was 11 +/- 5 and 19 +/- 9 days, respectively (P less than 0.01). There were no significant differences in the number of patients who had complications or died. During follow-up, 37 patients in each group were hospitalized again. In the paracentesis group, the number of rehospitalizations for any reason (174 vs. 97 in the peritoneovenous-shunt group) or for ascites (125 vs. 38) was significantly higher, and the median time to a first readmission for any reason (1 +/- 1 vs. 2 +/- 2 months) or for ascites (2 +/- 2 vs. 8 +/- 17 months) was significantly shorter than in the peritoneovenous-shunt group. The total times in the hospital during follow-up, however, were similar in the two groups (48 +/- 49 and 44 +/- 39 days, respectively). Three patients had obstructions of their peritoneovenous shunts during their first hospitalizations, and 15 patients had a total of 20 obstructions during follow-up. Survival was similar in both groups. CONCLUSIONS: The LeVeen shunt and paracentesis are equally effective in relieving refractory ascites. The former may provide better long-term control of ascites, but shunt occlusion is common and survival is not improved.

Albumins↗
PubMed1991

[Prophylactic sclerosis of esophageal varices. Results of a controlled prospective study].

BACKGROUND: Endoscopic sclerosis of esophageal varices is effective both to treat active hemorrhage and to prevent recurrences. By contrast, its usefulness for the prophylaxis of the first episode of hemorrhage is not well established, the available data being contradictory. METHODS: Overall 46 patients with cirrhosis and esophageal varices of type B or higher, without previous upper gastrointestinal hemorrhage, were randomized to be treated with prophylactic sclerosis or not (n = 22 and 24, respectively). Both groups were comparable in age, sex, etiology of cirrhosis (mainly alcoholic), Child's degree of hepatic failure, coagulation studies, laboratory data and endoscopic findings. RESULTS: In a mean follow up of 16 months, the patients treated with sclerosis had a higher frequency of hemorrhage from gastroesophageal varices (27%) than those in the control group (8%) (n.s.). However, this difference reached significance (p = 0.02) when only patients from Child's classes A and B were considered (31% in the sclerosis group vs 5% in the control group). The mortality rate was similar in both groups, with a probability of one year survival of 80 and 76% in the sclerosis and control groups, respectively. CONCLUSIONS: The results indicate that prophylactic sclerotherapy does not improve short-term survival or reduce the risk of a first hemorrhage due to gastroesophageal varices of type B or higher in hepatic cirrhosis. It may even facilitate the development of this severe complication in Child's A and B class patients.

Endoscopy, Digestive System↗
PubMed1991

Portacaval shunt versus endoscopic sclerotherapy in the elective treatment of variceal hemorrhage.

Eighty-two consecutive Child-Campbell class A and B cirrhotic patients were included in a prospective controlled trial to assess the efficacy and safety of portacaval anastomosis vs. endoscopic sclerotherapy as elective treatment of variceal hemorrhage. Forty-one patients were randomized to portacaval anastomosis and 41 to sclerotherapy. After excluding dropouts, 34 patients were treated with portacaval anastomosis and 35 with sclerotherapy. The incidence of variceal rebleeding during follow-up (mean +/- SD, 20.6 +/- 14.2 months) was significantly higher in the sclerotherapy than in the portacaval groups, either considering the overall treated group or only patients completing sclerotherapy (40% and 25% vs. 2.9%; P = 0.0002 and P = 0.01, respectively). The 2-year probability of suffering from at least one episode of hepatic encephalopathy was significantly higher in patients submitted to portacaval anastomosis than in those treated with endoscopic sclerotherapy (40% vs. 12%; P = 0.04). However, disabling encephalopathy only appeared in 3 of 34 patients who underwent surgery (8.8%). Early and long-term mortality did not differ between the therapeutic groups; 2-year survival rates were 83% for portacaval anastomosis and 79% for sclerotherapy. It is concluded that portacaval anastomosis is more effective than endoscopic sclerotherapy in preventing variceal rebleeding in spite of the greater incidence of hepatic encephalopathy. The role of portacaval anastomosis in the elective treatment of variceal rebleeding should be reassessed.

Adult↗
PubMed1991

[Impact on the energetic-proteic nutritional status of total paracentesis combined with infusion of albumin or dextran-70 in the therapy of tension ascites in liver cirrhosis].

The aim of this study was to investigate the effect of total paracentesis plus albumin or dextran-70 infusion on the nutritional status in cirrhotics with tense ascites. Seventeen patients were studied. Eight patients (group I) were treated with total paracentesis and albumin infusion, and in 9 cases (group II) dextran-70 infusion was associated to total paracentesis. The nutritional status was assessed before and two days after the procedure by measuring triceps skinfold thickness, mid-arm muscle circumference and serum albumin. No changes in anthropometric parameters were observed in either group. Patients in group I showed a significant increase in serum albumin levels (from 26.6 +/- 1.4 to 28.9 +/- 1.3 g/l; p = 0.007), whereas this parameter decreased in group II (from 25.5 +/- 1.3 to 23.1 +/- 1.4 g/l; p = 0.005). However, serum albumin levels returned to initial values in both groups one month after total paracentesis. There were no differences between both groups regarding the appearance of complications and mortality rate during admission. These results suggest that total paracentesis plus either i.v. albumin or dextran-70 has no long-term effect on the protein-energy nutritional status.

Abdomen↗
PubMed1991

Sequential esophageal motility studies after endoscopic injection sclerotherapy: a prospective investigation.

To assess prospectively the effects of endoscopic intravariceal sclerosis (EIS) on esophageal function, we performed esophageal manometry on 13 cirrhotic patients before EIS, 24 h after the second session and 4 wk after the fourth session. EIS had no impact on lower esophageal sphincter pressure. However, a significant decrease in the amplitude of peristaltic waves was observed immediately post-EIS in the lower two-thirds of the esophagus. There was no modification of duration or velocity of progression of peristaltic waves. A four-fold increase in simultaneous contractions was observed early after EIS. These changes were reversible, as assessed by late esophageal testing after EIS. No correlations were demonstrated between esophageal motor parameters and doses of sclerosant. We conclude that sclerosant injection into the esophageal wall acutely impairs esophageal motility, but motor function is partially restored 4 wk after completion of EIS, suggesting that dysmotility is reversible.

Aged↗
PubMed1989

[Usefulness of microscopic study of the duodenal bile in the diagnosis of pancreatitis of unknown cause].

In spite of the numerous causes of acute pancreatitis reported, among which the most frequent are biliary lithiasis and alcoholism, the etiology remains obscure in many patients, being termed idiopathic in these cases. The presence of microcalculi in the bile juice has been described as a cause of some pancreatitis initially labeled as of unknown cause. We studied the duodenal bile juice of 22 patients who were admitted on various occasions for acute pancreatitis, in whom the etiology could not be clarified in spite of the anamnesis and explorations. Microscopic study of the bile juice showed the presence of microlithiasis in 36.3% of cases. We conclude that microscopic study of the bile juice is a risk-free technique that should be included systematically in the investigation of the etiology of idiopathic pancreatitis.

Acute Disease↗