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Biomedical subjects

Takeshi Takahashi-Monroy

Publications and source records attributed to Takeshi Takahashi-Monroy.

7 recordsLinked to original sources
PubMed2006

Perinuclear anti-neutrophil cytoplasmic antibodies (p-anca) in chronic ulcerative colitis: experience in a Mexican institution.

AIM: To assess the prevalence and clinical value of p-ANCA in a sample of Mexican ulcerative colitis (UC) patients. METHODS: In a prospective, IRB-approved protocol, p-ANCA was determined in 80 patients with UC (mean age, 32 +/- 12.9 years). The severity and extension of disease were determined by clinical methods, searching a statistical association with p-ANCA status. RESULTS: p-ANCA were detected in 41 (51%) patients. Severity of disease was the only clinical variable statistically associated with their presence (P < 0.0001; OR = 9; CI 95% = 3.2-24.7). CONCLUSION: The prevalence of p-ANCA was similar to that reported in other countries. Their presence was associated to UC severity, but offered no more information than the obtained by clinical methods.

Adult↗
PubMedDate not supplied

[Predictors of colectomy in patients with ulcerative colitis. A cohort analysis of 184 cases].

BACKGROUND: At the present time procto-colectomy is the only potentially curative therapeutic measure for patients with ulcerative colitis (UC). Due to its morbidity and mortality, several prognostic indexes have been proposed to identify subjects in whom surgery could be beneficial. However, they have limited availability or they are very cumbersome for the individual patient. AIM: To analyze demographic, clinical and biochemical variables in a group of 184 Mexican patients with UC in order to identify predicting factors for procto-colectomy. PATIENTS AND METHODS: Subjects were divided into two groups: A. Those in whom a procto-colectomy was performed (n = 52) and B. Patients on medical treatment in = 132). Continuous variables were analyzed by means of the Student's t test and categorical variables by means of chi-square statistic. A multivariate analysis was performed using logistic regression. RESULTS: The main indication for surgery was failure to medical treatment (78%). Procto-colectomy was elective in 28 cases and an emergency procedure in 14 (7 failures to medical treatment, 4 colonic perforations, 2 toxic megacolons and 1 uncontrolled hemorrhage). All operated subjects had pancolitis and showed more bloody bowel movements per day (> 10), fever (> 38.5 degrees C), tachycardia, hipoalbuminemia and hospitalizations. Only hypoalbuminemia in subjects with universal colitis was consistently associated to procto-colectomy. CONCLUSION: Pancolitis, hypoalbuminemia and previous hospitalizations were the strongest predictors of procto-colectomy in our cohort. Thus, serum protein determinations can be useful in patients with universal UC to decide surgical therapy.

Adult↗
PubMedDate not supplied

[Surgical treatment of Crohn's disease].

OBJECTIVE: The experience with the surgical treatment of Crohn's Disease is analyzed in order to determine the indications for surgery, surgical procedures, postoperative complications and associated risk factors, and recurrence rates. MATERIAL AND METHODS: Retrospective analysis of patients operated upon for Crohn's Disease between 1979 and 1997. Risk factors for operative morbidity were searched, and actuarial curves for recurrence of disease were constructed. RESULTS: There were 34 patients with a mean age of 46 years. All patients were operated upon because of complications; the most frequent ones were stenosis and obstruction. The affected patterns were ileocecal in 53%, colitis in 35% and small bowel in 12%. Segmental resections were the most frequent ones, mainly ileo-cecal. Operative morbidity was 32% and mortality 6%. The presence of colonic affection and the necessity of its resection was a higher risk for complications (P< 0.05). Actuarial recurrence was 39% at 107 months. CONCLUSIONS: Surgery for Crohn's disease was mainly indicated in complications, presented high rates of morbidity associated with colonic involvement and resections, and there were high rates of recurrence at long-term.

Adult↗
PubMedDate not supplied

[Single-layer colonic anastomoses using polyglyconate (Maxon) vs. two-layer anastomoses using chromic catgut and silk. Experimental study].

BACKGROUND: The safety of an intestinal anastomosis is usually measured by its complication rate, especially the incidence of anastomotic leakage. A wide variety of methods have been described to reestablish intestinal continuity including single-layer continuous or two-layer interrupted anastomosis. OBJECTIVES: To evaluate if the single-layer continuous anastomosis using polygluconate is safer and reliable than two-layer interrupted anastomosis with chromic catgut and silk. MATERIAL AND METHODS: A prospective, experimental, randomized and comparative analysis was conducted in 20 dogs. They were divided in two groups; group 1 underwent two-layer interrupted anastomosis and group 2 underwent sigle-layer continuous technique. Anastomoses were timed. Both groups were under observation. Anastomotic leakage, and other complications were evaluated. The animals were sacrified and the anastomosis was taken out together with 10 cm of colon on both sides of the anastomosis. Breaking strength, histologic evaluation and hydroxyproline determination were performed. RESULTS: Ten two-layer anastomosis and ten single-layer anastomosis were performed. A median of 25 minutes (range: 20-30 minutes) was required to construct the anastomoses in group 1 versus 20 minutes (range: 12-25 minutes) in group 2. All animals survived and no leakage was observed. Wound infection ocurred in four dogs (20%). Median breaking strength was 230 mm Hg in group 1 and 210 mm Hg in group 2. Hydroxyproline concentration was 8.94 mg/g in group 1 (range: 5.33-16.71) and 9.94 mg/g in group 2 (range: 2.96-21.87). There was no difference among groups about the inflammatory response evaluated by pathology. There was no statistical significance in any variable evaluated. CONCLUIONS: This study demonstrates that a single-layer continuous is similar in terms of safety to the two-layer technique, but because of its facility to perform, the single-layer technique could be superior.

Anastomosis, Surgical↗
PubMedDate not supplied

[Surgical treatment for colonic diverticular disease. Experience in the INCMNSZ].

BACKGROUND: Even though most patients with colonic diverticular disease respond to conservative management, some patients persist with symptoms or develop complications that require surgery. The objective of this study was to identify main surgical indications for colonic diverticular disease, and to evaluate the outcomes of surgical treatment. MATERIALS AND METHODS: A retrospective review of patients that underwent a surgical procedure for colonic diverticular disease from 1979 through 2000, was performed. Surgical indications were acute diverticulitis (54%) (group 1), stenosis (19%), fistula (9.54), recurrent diverticulitis (9.5%) and bleeding (8%) (group 2). Results. Seventy-four patients with a mean age of 56 years were studied. Fifty-eight percent were male. Surgical morbidity and mortality rates of acute diverticulitis were 55%, and 15%, respectively. The surgical procedures of this group were proximal stomas (45%), Hartmann's procedures (38%), and resections with primary anastomosis (17%). Second group morbidity and mortality rates were 35 and 5.8%, respectively. Thirty-six patients underwent two or more surgical procedures with statistical significance between first and second groups (61 vs. 28%; p < 0.05). The mortality of two-stage surgeries was lower than derivative procedures (13 vs. 22%; p = 0.009). A high Hinchey's score was the only factor associated with mortality (28.5 vs. 0%; p = 0.042). CONCLUSIONS: Mortality of surgical procedures for colonic diverticular disease is associated with a high Hinchey score. Primary anastomosis is o safe, procedure in some cases.

Adult↗
PubMedDate not supplied

[Morbi-mortality of Hartmann's reversal procedure].

BACKGROUND: Hartmann's operation is an alternative for emergency colorectal surgeries, but its reversal may be difficult and prone to complications. A longer interval for its reversal has been recommended to decrease complications. METHODS: In order to determine rates of morbi-mortality and to ascertain the association between the time interval for its reversal and presence of complications, we undertook a retrospective analysis of 48 patients with a mean age of 57 +/- 16 years. Nineteen patients (40%) were >65 years, and 21 (44%) had one or more underlying chronic disease. Perioperative factors associated with morbi-mortality were determined by means of the Mann-Whitney U test and Fisher exact test. RESULTS: Acute diverticulitis was the most frequent indication (42%). Mean interval between Hartmann's operation and its reversal was 8 months (range: 1 to 46 months). Mean duration of the reversal operation was 267 min (range: 120 to 540 min). There were complications in 29 patients (60%) including anastomotic leaks in 6 (12%) and operative deaths in 4 (8%). A shorter interval between Hartmann's operation and its reversal was not associated with more complications or longer surgical time. CONCLUSIONS: Hartmann's reversal operation has high rates of morbidity and mortality that are not influenced by the time interval from the original operation.

Adult↗