Caracterização radiográfica das manifestações esofagogastrointestinais da doença de Chagas

Figueirêdo, Sizenildo da Silva; Carvalho, Tarcísio Nunes; Nóbrega, Bruno Barcelos da; Ribeiro, Fernanda; Teixeira, Kim-Ir-Sen Santos; Ximenes, Carlos Alberto

doi:10.1590/s0100-39842002000500009

Cited by 4 publications

(9 citation statements)

References 3 publications

(7 reference statements)

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“…[ 16 , 17 ] It is not rare to see a patient complaining of dysphagia in whom a normal esophageal diameter is found at esophagogram. [ 6 , 8 , 9 , 18 ] This has been explained by a destruction of the nerve plexuses capable of causing physiological impairment before any gross morphological alteration can be detected. Once started the organ dilatation, progresses until a clear esophageal enlargement can easily be seen, [ 16 , 17 ] what may occur many years after the primary infection.…”

Section: Introductionmentioning

confidence: 99%

“…The use of barium swallow with fluoroscopy is more precise than the ordinary static barium swallow to evaluate the functional activity of the esophagus especially in patients with myoenteric neural plexus destruction but with small or no esophageal dilatation. [ 9 , 10 , 13 , 14 , 15 , 18 ]…”

Section: Introductionmentioning

confidence: 99%

“…The classification of chagasic megaesophagus according to the severity of organ dilatation, graded from I to IV, was proposed by Rezende in 1959 and 1960. [ 8 , 9 , 10 , 19 ] This classification resembles the one proposed for idiopathic achalasia [ 12 ] and is well known and used all over Brazil. However, it classifies the megaesophagus taking into account only the static picture of a barium swallow study, without functional correlations.…”

Section: Introductionmentioning

confidence: 99%

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Esophageal transit time in patients with chagasic megaesophagus

Martins

Ferreira²,

Cunha-Melo

2018

Medicine

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The aim of this study was to determine the esophageal transit time in control individuals and in chagasic patients with or without megaesophagus.A total of 148 patients were allocated in 6 groups according to serological diagnostic of Chagas disease and the degree of esophageal dilatation: A, control healthy individuals (n = 34, 22.9%); B, indeterminate form (n = 23, 15.5%); C, megaesophagus I (n = 37, 25.0%); D, megaesophagus II (n = 19, 12.8%); E, megaesophagus III (n = 21, 14.2%); and F, megaesophagus IV (n = 14, 9.5%). After 8-hour fasting, patients were asked to swallow 75 mL of barium sulfate solution. x-Rays were obtained after 8, 30, 60, and 90 seconds, 5, 10, 30, 60, and 90 minutes, 2, 6, 12, 24 hours, and at every 12 hours until no more contrast was seen in the esophagus. This was the transit time.The transit time varied from 8 seconds to 36 hours (median = 90 seconds). A linear correlation was observed between transit time and megaesophagus grade: 8 seconds in groups A and B, 5 minutes in C, 30 minutes in D, 2 hours in E, and 9:15 hours in F. Dysphagia was not reported by 60 of 114 (52.6%) patients with positive serological tests for Chagas disease (37/91—40.7%—of patients with megaesophagus I–IV grades). The esophageal transit time increased with the grade of megaesophagus.The esophageal transit time has a direct correlation with the grade of megaesophagus; dysphagia complaint correlates with the grade of megaesophagus. However, many patients with megaesophagus do not report dysphagia.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Esophageal transit time in patients with chagasic megaesophagus

Martins

Ferreira²,

Cunha-Melo

2018

Medicine

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“…There is still no definitive treatment for it, and therapeutic alternatives only relieve symptoms. Surgical treatment, indicated for not advanced cases, do not correct the functional disorder of the organ and the main symptoms are recurrent 11 .…”

Section: Introductionmentioning

confidence: 99%

“…From Equation (10) and (11), is given: y � � � � ; y � � � � � � � � � � ; y � � � � ; y � � � � ; y � � �� ; y � � �� (14) The normal form of the dynamic (9) is given asr:…”

mentioning

confidence: 99%

Análise do deslocamento do bolo alimentar: comparação entre o esôfago saudável e modelo de megaesôfago chagásico

et al. 2017

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Objective: to study the dynamics of the human esophagus behavior when affected by Chagas disease. Methods: a mass-spring-damper model was proposed to model the food through the esophagus during peristaltic action. After that, parameters were recalculated to simulate a chagasic megaesophagus. Results: the velocity and displacement curves from both models were analyzed and the dynamic differences between the healthy organ and the ill one, identified. According to the results obtained, the food displacement in a chagasic megaesophagus type II (3 centimeters dilated) is just 11.84% of the displacement in a healthy esophagus. Conclusion: Chagas disease generates a velocity close to zero and a high dampering in the downwards curve of the bolus whose displacement cannot return to its initial state, due to aperistalses, which proves the food bolus retention. With the introduction of the proposed organic control system, an approximation of the curves that remained with dynamic behavior close to the model of the healthy organ was obtained, minimizing the retention of the food. Keywords: Esophageal Achalasia; Chagas Disease; Esophagus RESUMO Objetivo: estudar a dinâmica do comportamento do esôfago humano quando afetado por doença de Chagas e propor um controlador orgânico para auxiliar no aperistaltismo do órgão. Métodos: um modelo de massa, mola e amortecedor foi proposto para modelar o deslocamento do bolo alimentar no esôfago durante a ação peristáltica. Foram utilizados parâmetros da literatura para simular o megaesôfago chagásico e o saudável. Resultados: foram analisadas as curvas de velocidade e deslocamento de ambos os modelos e identificou-se as diferenças dinâmicas entre o órgão saudável e um doente. O deslocamento de alimentos em um tipo de Chagas megaesófago II (3 centímetros de dilatação) é apenas 11,84% do deslocamento num esófago saudável. Conclusão: a doença de chagas gera uma velocidade próxima de zero e um alto amortecimento na curva de descida do alimento que devido ao peristaltismo o deslocamento que não pode retornar ao seu estado inicial, o que comprova a retenção do bolo alimentar. Com o sistema de controle orgânico proposto obteve-se uma aproximação das curvas a um comportamento dinâmico próximo do modelo do órgão saudável, minimizando a retenção do alimento.

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High resolution manometric findings in patients with Chagas' disease esophagopathy

Silva

Vicentine

Herbella

2012

Asian Pacific Journal of Tropical Medicine

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Our results show that LES was hypotensive or normotensive in the majority of the patients. Impaired relaxation was found in a minority of our patients. Aperistalsis was seen in 100% of patients. UES had impaired relaxation in a significant number of patients. Further clinical study is needed to investigate whether manometric features can predict outcomes following the studies of idiopathic achalasia.

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Caracterização radiográfica das manifestações esofagogastrointestinais da doença de Chagas

Cited by 4 publications

References 3 publications

Esophageal transit time in patients with chagasic megaesophagus

Esophageal transit time in patients with chagasic megaesophagus

Análise do deslocamento do bolo alimentar: comparação entre o esôfago saudável e modelo de megaesôfago chagásico

High resolution manometric findings in patients with Chagas' disease esophagopathy

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