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Biomedical subjects

J Cosnes

Publications and source records attributed to J Cosnes.

At least 109 records · Page 6Linked to original sources
PubMed1978

Role of the ileocecal valve and site of intestinal resection in malabsorption after extensive small bowel resection.

Intestinal absorption after extensive small bowel resections, for diseases other than Crohn's disease, was studied in 17 patients. When the ileocecal valve and the right colon were preserved, malabsorption was transient and moderate and had no prejudicial nutritional effect (fecal fat: 8.8 +/- 1.8 g/24 h in resections sparing the 2 distal bowel loops, and 16.2 +/- 4.8 g/24 h in resections including the distal ileum; mean +/- SEM). When colectomy was associated, malabsorption was severe and persistent (fecal fat: 47.4 +/- 12.2 g/24 h; mean +/- SEM). These findings suggest that the most important prognostic factor in extensive small bowel resection is the site of the resection, and particularly the presence or absence of the right colon and ileocecal valve.

Adolescent↗
PubMedDate not supplied

The role of anatomic factors in nutritional autonomy after extensive small bowel resection.

BACKGROUND: It is difficult to predict which patients with a postsurgical short bowel will require long-term parenteral nutrition. METHODS: We performed a retrospective prognostic study for the time to home parenteral nutrition or death from malnutrition (nonautonomy), on the basis of 103 patients with a residual short bowel of 17 to 150 cm. The influence of anatomic variables was summarized through the use of Cox regression model. RESULTS: Of the 103 patients included, 24 lost nutritional autonomy. Three anatomic variables were identified as having independent predictive information; remaining small bowel length (measured on small bowel x-rays; p = .0001), and jejunoileal anastomosis (p = .01) promoted autonomy, whereas end jejunostomy (p = .002) increased the risk of losing nutritional autonomy. CONCLUSIONS: On the basis of these results and on the relative weight of these variables, high-risk patients for loss of nutritional autonomy were defined as those with jejunoileal anastomosis and a remaining small bowel length < 35 cm, patients with jejunocolic anastomosis and remaining small bowel length < 60 cm, and patients with an end jejunostomy and remaining small bowel length < 115 cm. This classification was thereafter validated on a prospective series of 32 patients.

Adolescent↗
PubMedDate not supplied

[Factors associated with hyperhomocysteinemia in Crohn's disease].

AIMS: The incidence of thromboembolic disease is increased in patients with inflammatory bowel disease. Hyperhomocysteinemia is one of the risk factors for thrombosis. The aims were: 1) to assess the prevalence of hyperhomocysteinemia in a large series of patients with Crohn's disease; 2) to search for clinical and biological factors associated with hyperhomocysteinemia. PATIENTS AND METHODS: One hundred seventy-one patients with Crohn's disease (64 males, 107 females), median age 31 years (range: 16-82), were studied. The median duration of the disease was 7 years. The concentrations of homocysteine, folate, cobalamin and C-reactive protein were measured in serum from blood sample of each patient. RESULTS: The mean concentration of seric homocysteine was 14.8 micromol/L (N: 4.4 - 12.4 micromol/L). Hyperhomocysteinemia was observed in 89 patients (52%). It was significantly associated with age, sex, smoking habit, serum cobalamin level and history of ileal surgical resection (P<0.05). In the group of operated patients, there was a statistically significant association between hyperhomocysteinemia and the length of small bowel resected. In multivariate analysis, sex and smoking were associated with hyperhomocysteinemia. CONCLUSION: More than half of the patients with Crohn's disease have hyperhomocysteinemia. This result stresses the need for preventing reversible factors associated with hyperhomocysteinemia, such as smoking and cobalamin deficiency, in order to lower the thrombotic risk of patients with Crohn's disease.

Adolescent↗
PubMedDate not supplied

Improvement in protein absorption with a small-peptide-based diet in patients with high jejunostomy.

We compared urinary and fecal excretions of fluid, electrolytes, and nutrients in six patients with a high jejunostomy during three randomized consecutive 3-day periods of total enteral nutrition with three diets differing only by the degree of hydrolysis of the protein moiety: whole proteins, their hydrolysate (63% nitrogen as small peptides with < 1000 M), and the two mixed together. Daily nitrogen absorption was significantly enhanced with the small-peptide and mixed diets (14.3 +/- 3.4 and 13.1 +/- 2 g, respectively) compared with the whole protein diet (10.9 +/- 2.4 g, p = 0.012). Concomitantly, blood urea nitrogen and urinary urea excretion increased with the small-peptide diet. Apparent absorption of fat and calories, fecal weight, and urinary and fecal excretions of sodium, potassium, calcium, and magnesium remained unchanged. We conclude that a small-peptide-based diet may be beneficial in patients with short-bowel syndrome.

Aged↗
PubMedDate not supplied

[Crohn disease and enteral nutrition: elemental or non-elemental?].

Analysis of controlled trials from the literature shows that enteral nutrition is an effective treatment of active Crohn's disease. Elemental and non-elemental diets are both effective, and studies comparing the two types of mixtures have failed to reveal any significant difference. However, elemental diets appear to act more rapidly and have a more marked effect on the inflammatory syndrome and exudative enteropathy. They should therefore be preferred whenever enteral nutrition is used with the aim of influencing the inherent progression of Crohn's disease.

Crohn Disease↗
PubMedDate not supplied

[Effect of clonidine on oro-cecal transit time in normal man].

The aim of our study was to explore the effect of clonidine on the mouth to caecum transit time in healthy man. Hydrogen-breath test, using lactulose 10 g, was carried out in 10 healthy male volunteers, in double-blind conditions and in random sequences of medications, placebo or clonidine (0.3 mg per os). Clonidine increased the mouth to caecum transit time significantly (p = 0.013): from 85 +/- 12 min. (with placebo) to 139 +/- 16 min. (mean +/- SE). This study suggests that the antidiarrheal action of clonidine is due, at least in part, to effect on motility of the proximal gut.

Adult↗
PubMedDate not supplied

[Continuous enteral feeding of the gastrectomized patient with malnutrition].

The development of nutritional parameters, anthropometric and biologic, under polymeric continuous gastro-intestinal feeding, was followed during 3 to 7 weeks in a group of 10 gastrectomised patients with malnutrition and compared with a group of 10 patients with malnutrition secondary to intake deficiencies and receiving the same treatment. Body weight, mid-arm muscle circumference, triceps skinfold and serum transferrin increased significantly from the beginning to the end of the gastro-intestinal feeding in both groups, and in a comparable fashion. Continuous gastro-intestinal feeding is therefore an effective treatment of malnutrition in the gastrectomised patient. The response obtained, as far as nutrition is concerned, may be compared to that of the patient with malnutrition secondary to intake deficiencies.

Adult↗
PubMedDate not supplied

[Exclusive elemental enteral diet in cortico-resistant and cortico-dependent forms of Crohn's disease].

The aim of this study was to investigate the value of elemental diet in steroid-resistant and steroid-dependent Crohn's disease. Elemental diet (Vivonex HN, 39.4 +/- 9.2 kcal/kg/d) was delivered through a nasogastric tube at a constant rate. Twenty therapeutic periods lasting from 20 to 74 days (median, 32 days) were undertaken in 18 patients. Elemental diet was well tolerated. Mean values of hemoglobin, serum albumin, and serum transferrin increased significantly through the therapeutic period; body weight and anthropometric data did not change significantly. The short-term response to elemental diet was excellent in 11 cases, demonstrated by achievement of clinical remission and steroid withdrawal; six patients had an incomplete remission and remained slightly active or had to be maintained under low dose steroids; three patients did not respond to therapy and had to be operated upon. During the follow-up (6-30 months), 8 patients out of 17 had a relapse. Relapse was controlled by medical therapy in 5 cases and led to surgery in the 3 other cases. We conclude that elemental diet, as total parenteral nutrition, is an effective therapy of steroid-resistant and steroid-dependent Crohn's disease. However, elemental diet does not prevent relapse.

Adolescent↗
PubMedDate not supplied

[Malnutrition in chronic radiation enteritis. Study of 100 patients].

The nutritional condition of 100 patients with radiation chronic enteritis was studied and compared with that of a consecutive series of 80 patients hospitalized for digestive disorders. The parameters which were measured (body weight, muscular measurement, triceps skinfold creatinine/height index, albumin, transferrin, cholesterol, lymphocytosis), were all significantly lower in patients with radiotherapy enteritis. Anthropometric parameters and lymphocytes were the most affected. The severity of the denutrition was unrelated to the duration of the radiotherapy, the presence of an associated post-radiotherapy involvement of the colon or the urinary tract, a neoplastic recurrence, possible past-history of small bowel surgery; on the contrary, it was related to the extension of actinic lesions on the small bowel and to the presence of subocclusive manifestations. The subsequent evolution at 6 months was most often complicated or unfavorable in patients presenting a severe denutrition. Therefore, denutrition is frequent and severe in the course of post-radiotherapy chronic enteritis and is associated with a more guarded prognosis.

Adolescent↗
PubMedDate not supplied

[Value of digestive endoscopic examination in acquired immunodeficiency syndrome (45 cases)].

45 patients with acquired immunodeficiency syndrome (AIDS) were studied with gastrointestinal endoscopy (42 upper endoscopies and 12 colonoscopies). 28 patients had skin or buccal Kaposi's sarcoma with or without opportunistic infections and 17 had opportunistic infections. 12 patients out of 45 (27 per cent) had 1 or several Kaposi's sarcoma macroscopic gastrointestinal localisations, 12 documented by upper endoscopy and 4 by colonoscopy. Endoscopic biopsies confirmed the diagnosis 5 times out of 16 (31 per cent). 16 patients (38 per cent) had candidosis oesophagitis, 1 had ulcerative antritis, 2 had a erythematosus duodenitis, 6 had diffuse inflammatory mucosal colonic changes. The specific abnormalities documented by histology were 1 case of total villous atrophy and 2 cases of cytomegalovirus colitis. The patients with cutaneous Kaposi's sarcoma have more often shown gastrointestinal Kaposi's sarcoma than the patients without Kaposi's sarcoma. The prevalence of tumoral or major (diffuse candidosis oesophagitis, ulcerative antritis, active colitis) endoscopic abnormalities documented by upper endoscopy was 40 per cent (10 cases out of 25) in asymptomatic patients, 43 per cent in diarrheic patients (3 cases out of 7) and 60 per cent (6 cases out of 10) in patients with dysphagia, epigastralgic pain or vomiting and that of documented by colonoscopy was 75 per cent (3 cases out of 4) in patients with mucus or bloody stools and 14 per cent (1 case out of 7) in diarrheic patients. The main result of the endoscopy on AIDS patients has therefore been the diagnosis of visceral localisations of Kaposi's sarcoma. The appearance of the secondary major lesions related to opportunistic infections is unusual, especially in asymptomatic patients. A systematic endoscopy on these patients remains a disputed question.

Acquired Immunodeficiency Syndrome↗
PubMedDate not supplied

[Role of the prevalvular terminal ileum in fecal losses in ileostomized patients].

Fecal losses of water, electrolytes, fat and nitrogen were studied retrospectively in 42 cases (40 patients). To assess the role of the terminal ileum, patients were classified into 2 groups according to the length of resected and/or excluded ileum before the ileocecal junction; group I (n = 17; length less than or equal to 15 cm) and group II (n = 25; length ranging from 15 to 50 cm). In group I, fecal weight and fecal output of sodium, fat and nitrogen were (mean for 24 h) 544 g, 63 mmol, 6.5 g (6.4 p. 100 of ingesta), 2.94 respectively. In group II, fecal outputs were higher; (mean for 24 h) 862 g, 112 mmol, 10.9 g (14.2 p. 100 of ingesta), 4.2 respectively. These differences were statistically significant for fecal weight and fecal output of sodium (p less than 0.001) and for fecal output of fat when expressed as percentage of ingesta (p less than 0.02). These results show that the length of terminal ileum is a major determinant in fecal losses after ileostomy; therefore, it appears to be of major importance to preserve this segment of ileum as much as possible during ileocolic surgery.

Adult↗