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A Ruiz de León

Publications and source records attributed to A Ruiz de León.

13 recordsLinked to original sources
PubMed2002

Restoration of peristalsis in the esophagus of a patient diagnosed of achalasia.

We report the case of a patient with dysphagia in whom a clinical and manometric follow-up was carried out. We initially observed a motor disorder of the esophageal spasm type. During manometric follow-up a progression to vigorous achalasia was observed. The patient was treated with pneumatic dilation, which obtained a good response to treatment. In manometries performed after treatment we observed a return of peristalsis in the distal esophageal body. Early treatment and short evolution of disease may allow peristalsis to recover in these cases. Peristalsis recovery casts new doubts on achalasia etiology.

Adult↗
PubMed2001

Reproducibility of ambulatory cutaneous electrogastrography in healthy volunteers.

OBJECTIVE: Cutaneous electrogastrography (cEGG) is a technique used for recording gastric electrical activity through electrodes placed on the abdominal skin. Given its increasing use for different pathologies, we decided to study its reliability (or reproducibility), that had never been appropriately assessed before. METHODS: Ambulatory cutaneous electrogastrogram was recorded after US location of the gastric antrum in 26 healthy volunteers with ages ranging from 20 to 60 years. cEGG was recorded during 60 minutes in fasting state and 60 minutes after a standard meal and it was repeated in a different day but under the same conditions. RESULTS: ANOVA analysis showed significant individual differences regarding dominant frequency (DF) (p = 0.19) and power ratio (PR) (p = 0.11), and before and after the meal, except for DF (p = 0.12), dominant power (DP) (p = 0.59) and bradygastria (p = 0.09). No significant differences were found related to the day of the recording. The intra-observer agreement index showed a good agreement in the DF and the percentage of normogastria (0.91). CONCLUSIONS: Currently, DF and normogastria percentage are the most reliable variables for the non-invasive study of gastric electric activity.

Adult↗
PubMed2000

[Diagnosis of hemochromatosis with magnetic resonance].

Hemochromatosis is a disorder of parenchymal iron overload. The diagnosis is based upon clinical manifestations, laboratory findings and iron concentration in liver. Magnetic resonance imaging (MRI) shows a decrease in liver signal intensity. Its role has not been already defined. Nonetheless, ratio of liver to muscle proton density (LMPD) shows a significant correlation with hepatic iron. One patient with a long-standing cirrhosis with data of hemochromatosis whose coagulation study did not allow to perform a liver biopsy was diagnosed with this method. Hepatic iron concentration was calculated based upon: microgram/g of hepatic iron = (-5.174* LMPD) + 9.932. MRI can be useful in the evaluation of hemochromatosis among patients who refuse or have contraindication to liver biopsy.

Aged↗
PubMed1998

Manometry and 24-hour ambulatory pH monitoring at two levels of the esophagus in patients with and without esophagitis.

OBJECTIVE: To define the relationship between esophageal dysmotility and severity of gastroesophageal reflux (GER) at the distal and proximal levels. METHODS: Two-level, 24-hour ambulatory pH monitoring and manometry of the esophagus were performed in 40 patients with abnormal distal acid exposure and in 20 healthy controls. Twenty patients with normal endoscopy or endoscopic evidence of grade I esophagitis were assigned to group 1 and 20 with grade II-III esophagitis were assigned to group 2. We used a dual-site pH probe with antimony electrodes spaced 15 cm apart. RESULTS: Patients had greater acid exposure than controls at both levels. The percentage of distal reflux episodes reaching proximal esophagus was significantly greater in group 1 than in the control group. The most marked reductions in the percentage of time of the pH remaining under 4 were detected in the patients with the most severe distal acid reflux and esophagitis (group 2). The mean lower esophageal sphincter pressure was significantly lower in group 2 than in group 1. The percentage of tertiary waves or nonperistaltic contractions was significantly higher in group 2 than in group 1 and the control group. Patients with milder distal reflux had significantly lower distal and middle esophageal wave amplitudes than controls. There were no significant differences between controls and patients with severe esophagitis in terms of the esophageal peristaltic wave amplitude in the middle third of the esophagus. CONCLUSIONS: No correlation was observed between episodes of distal reflux and proximal reflux in GER patients. Esophageal motor activity appears to be an important determinant of the severity and extension of GER in the proximal esophagus.

Adolescent↗
PubMed1994

[Physiological reflux in proximal esophagus (assessment with simultaneous pH monitoring in proximal and distal esophagus in healthy subjects].

Two-level pH monitoring was performed for 24 hours in 20 healthy subjects to document the presence of reflux episodes and to obtain reference values for reflux studies. The pH probes were placed 5 and 20 centimetres above the LES by means of a manometric technique. Significant differences were found at these two levels. At the proximal esophageal level 18 of the 20 subjects had reflux episodes. Five centrimetres above the lower esphageal sphincter the total reflux time was 1.35%, 2.05% in the upright and 0.15% in the supine positions. At 20 centimetres level it was significantly lower: 0.5% the total percent time with pH below 4, 0.8% and 0% in the upright and supine positions respectively. The mean reflux time was about 40% of the distal value, but the same pattern of reflux was observed at two levels of the esophagus. This technique is useful in documenting the cephalad extend of GER and allows to identify normal GER patterns at different levels of the esophagus.

Adolescent↗
PubMed1982

Anal sphincteric pressure in fissure-in-ano before and after lateral internal sphincterotomy.

Resting anal canal pressure was measured in 15 patients with anal fissure before and after lateral internal sphincterotomy. This pressure was found to be significantly higher in these subjects (mean 95 +/- 23.08 mm HG) than in the control group (mean 66.10 +/- 14.28 mm Hg) before surgery (P less than 0.005). After surgery, a normal anal canal pressure was produced. The authors maintain that anal canal spasm is responsible for chronicity of anal fissures.

Adolescent↗