Need for Long-term Follow-up in Enterohemorrhagic Escherichia coli—Associated Hemolytic Uremic Syndrome Due to Late-Emerging Sequelae

Background. The aim of this study was to evaluate the long-term prognosis of children with hemolytic uremic syndrome (HUS). Methods. Over a 6-year period, 619 pediatric patients with the clinical diagnosis of HUS were registered in Austria and Germany, and a subset (n = 274) was prospectively follow...

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Veröffentlicht in:Clinical infectious diseases 2012-05, Vol.54 (10), p.1413-1421
Hauptverfasser: Karch, Helga, Rosales, Alejandra, Hofer, Johannes, Zimmerhackl, Lothar-Bernd, Jungraithmayr, Therese C., Riedl, Magdalena, Giner, Thomas, Strasak, Alexander, Orth-Höller, Dorothea, Würzner, Reinhard, Karch, Helge
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container_end_page 1421
container_issue 10
container_start_page 1413
container_title Clinical infectious diseases
container_volume 54
creator Karch, Helga
Rosales, Alejandra
Hofer, Johannes
Zimmerhackl, Lothar-Bernd
Jungraithmayr, Therese C.
Riedl, Magdalena
Giner, Thomas
Strasak, Alexander
Orth-Höller, Dorothea
Würzner, Reinhard
Karch, Helge
description Background. The aim of this study was to evaluate the long-term prognosis of children with hemolytic uremic syndrome (HUS). Methods. Over a 6-year period, 619 pediatric patients with the clinical diagnosis of HUS were registered in Austria and Germany, and a subset (n = 274) was prospectively followed up for 5 years. Results. Infection with enterohemorrhagic Escherichia coli (EHEC) was confirmed in 79% of cases. Five years after diagnosis, 70% of EHEC-infected patients (95% confidence interval [CI], .63—.76) were fully recovered. The remaining 30% had persistent hypertension (9%), neurological symptoms (4%), decreased glomerular filtration rate (7%), and/or proteinuria (18%). Hypertension and proteinuria developed in a total of 18% of patients who had no sequelae 1 year after the acute phase (95% CI, 12—26). Multivariate logistic regression analysis demonstrated an association between the use of plasma therapy during acute phase and poor long-term outcome (odds ratio, 2.9—13; 95% CI, 2.4—33; P < .05), but this treatment was also used more frequently in severe cases. In contrast, the use of antibiotic therapy in the diarrheal phase and other established risk factors for developing HUS, such as Shiga toxin 2 and EHEC serotypes traditionally considered to be "high risk," were not associated with adverse long-term outcome. In particular, there was no difference between O157 and non-O157 EHEC. Conclusions. This study identified an association between the use of plasma treatment and poor long-term outcome and confirms already known risk factors for poor prognosis. Follow-up investigations for at least 5 years are recommended to detect late-emerging sequelae.
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The aim of this study was to evaluate the long-term prognosis of children with hemolytic uremic syndrome (HUS). Methods. Over a 6-year period, 619 pediatric patients with the clinical diagnosis of HUS were registered in Austria and Germany, and a subset (n = 274) was prospectively followed up for 5 years. Results. Infection with enterohemorrhagic Escherichia coli (EHEC) was confirmed in 79% of cases. Five years after diagnosis, 70% of EHEC-infected patients (95% confidence interval [CI], .63—.76) were fully recovered. The remaining 30% had persistent hypertension (9%), neurological symptoms (4%), decreased glomerular filtration rate (7%), and/or proteinuria (18%). Hypertension and proteinuria developed in a total of 18% of patients who had no sequelae 1 year after the acute phase (95% CI, 12—26). Multivariate logistic regression analysis demonstrated an association between the use of plasma therapy during acute phase and poor long-term outcome (odds ratio, 2.9—13; 95% CI, 2.4—33; P &lt; .05), but this treatment was also used more frequently in severe cases. In contrast, the use of antibiotic therapy in the diarrheal phase and other established risk factors for developing HUS, such as Shiga toxin 2 and EHEC serotypes traditionally considered to be "high risk," were not associated with adverse long-term outcome. In particular, there was no difference between O157 and non-O157 EHEC. Conclusions. This study identified an association between the use of plasma treatment and poor long-term outcome and confirms already known risk factors for poor prognosis. Follow-up investigations for at least 5 years are recommended to detect late-emerging sequelae.</description><identifier>ISSN: 1058-4838</identifier><identifier>EISSN: 1537-6591</identifier><identifier>DOI: 10.1093/cid/cis196</identifier><identifier>PMID: 22412065</identifier><identifier>CODEN: CIDIEL</identifier><language>eng</language><publisher>Oxford: Oxford University Press</publisher><subject>Anti-Bacterial Agents - therapeutic use ; ARTICLES AND COMMENTARIES ; Austria - epidemiology ; Bacterial infections ; Biological and medical sciences ; Blood plasma ; Child, Preschool ; Clinical outcomes ; Delayed Diagnosis - statistics &amp; numerical data ; Dialysis ; E coli ; Enterohemorrhagic Escherichia coli - isolation &amp; purification ; Escherichia coli ; Escherichia coli Infections - complications ; Escherichia coli Infections - microbiology ; Escherichia coli Infections - therapy ; Female ; Follow-Up Studies ; Germany - epidemiology ; Hematologic and hematopoietic diseases ; Hemolytic uremic syndrome ; Hemolytic-Uremic Syndrome - diagnosis ; Hemolytic-Uremic Syndrome - epidemiology ; Humans ; Hypertension ; Infant ; Infections ; Infectious diseases ; Male ; Medical disorders ; Medical prognosis ; Medical sciences ; Medical treatment ; Nephrology. Urinary tract diseases ; Nephropathies. Renovascular diseases. 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The aim of this study was to evaluate the long-term prognosis of children with hemolytic uremic syndrome (HUS). Methods. Over a 6-year period, 619 pediatric patients with the clinical diagnosis of HUS were registered in Austria and Germany, and a subset (n = 274) was prospectively followed up for 5 years. Results. Infection with enterohemorrhagic Escherichia coli (EHEC) was confirmed in 79% of cases. Five years after diagnosis, 70% of EHEC-infected patients (95% confidence interval [CI], .63—.76) were fully recovered. The remaining 30% had persistent hypertension (9%), neurological symptoms (4%), decreased glomerular filtration rate (7%), and/or proteinuria (18%). Hypertension and proteinuria developed in a total of 18% of patients who had no sequelae 1 year after the acute phase (95% CI, 12—26). Multivariate logistic regression analysis demonstrated an association between the use of plasma therapy during acute phase and poor long-term outcome (odds ratio, 2.9—13; 95% CI, 2.4—33; P &lt; .05), but this treatment was also used more frequently in severe cases. In contrast, the use of antibiotic therapy in the diarrheal phase and other established risk factors for developing HUS, such as Shiga toxin 2 and EHEC serotypes traditionally considered to be "high risk," were not associated with adverse long-term outcome. In particular, there was no difference between O157 and non-O157 EHEC. Conclusions. This study identified an association between the use of plasma treatment and poor long-term outcome and confirms already known risk factors for poor prognosis. 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The aim of this study was to evaluate the long-term prognosis of children with hemolytic uremic syndrome (HUS). Methods. Over a 6-year period, 619 pediatric patients with the clinical diagnosis of HUS were registered in Austria and Germany, and a subset (n = 274) was prospectively followed up for 5 years. Results. Infection with enterohemorrhagic Escherichia coli (EHEC) was confirmed in 79% of cases. Five years after diagnosis, 70% of EHEC-infected patients (95% confidence interval [CI], .63—.76) were fully recovered. The remaining 30% had persistent hypertension (9%), neurological symptoms (4%), decreased glomerular filtration rate (7%), and/or proteinuria (18%). Hypertension and proteinuria developed in a total of 18% of patients who had no sequelae 1 year after the acute phase (95% CI, 12—26). Multivariate logistic regression analysis demonstrated an association between the use of plasma therapy during acute phase and poor long-term outcome (odds ratio, 2.9—13; 95% CI, 2.4—33; P &lt; .05), but this treatment was also used more frequently in severe cases. In contrast, the use of antibiotic therapy in the diarrheal phase and other established risk factors for developing HUS, such as Shiga toxin 2 and EHEC serotypes traditionally considered to be "high risk," were not associated with adverse long-term outcome. In particular, there was no difference between O157 and non-O157 EHEC. Conclusions. This study identified an association between the use of plasma treatment and poor long-term outcome and confirms already known risk factors for poor prognosis. Follow-up investigations for at least 5 years are recommended to detect late-emerging sequelae.</abstract><cop>Oxford</cop><pub>Oxford University Press</pub><pmid>22412065</pmid><doi>10.1093/cid/cis196</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record>
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subjects Anti-Bacterial Agents - therapeutic use
ARTICLES AND COMMENTARIES
Austria - epidemiology
Bacterial infections
Biological and medical sciences
Blood plasma
Child, Preschool
Clinical outcomes
Delayed Diagnosis - statistics & numerical data
Dialysis
E coli
Enterohemorrhagic Escherichia coli - isolation & purification
Escherichia coli
Escherichia coli Infections - complications
Escherichia coli Infections - microbiology
Escherichia coli Infections - therapy
Female
Follow-Up Studies
Germany - epidemiology
Hematologic and hematopoietic diseases
Hemolytic uremic syndrome
Hemolytic-Uremic Syndrome - diagnosis
Hemolytic-Uremic Syndrome - epidemiology
Humans
Hypertension
Infant
Infections
Infectious diseases
Male
Medical disorders
Medical prognosis
Medical sciences
Medical treatment
Nephrology. Urinary tract diseases
Nephropathies. Renovascular diseases. Renal failure
Neurologic manifestations
Pediatrics
Platelet diseases and coagulopathies
Predisposing factors
Prospective Studies
Proteinuria
Renal failure
Risk factors
Transfusion Reaction
Treatment Outcome
title Need for Long-term Follow-up in Enterohemorrhagic Escherichia coli—Associated Hemolytic Uremic Syndrome Due to Late-Emerging Sequelae
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