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Amniotic band syndrome in fetal lambs I: Fetoscopic release and morphometric outcome
A fetal lamb model of amniotic band syndrome (ABS) was developed to study the pathophysiology of banded extremities and evaluate the possibility of in utero treatment with the potential for functional recovery. Eight fetal lambs underwent banding of their extremities with umbilical tape at 100 days&...
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Published in: | Journal of pediatric surgery 1995-07, Vol.30 (7), p.974-978 |
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creator | Crombleholme, Timothy M Dirkes, Kathryn Whitney, Timothy M Alman, Benjamin Garmel, Sara Connelly, Raymond J |
description | A fetal lamb model of amniotic band syndrome (ABS) was developed to study the pathophysiology of banded extremities and evaluate the possibility of in utero treatment with the potential for functional recovery. Eight fetal lambs underwent banding of their extremities with umbilical tape at 100 days' gestation. Two lambs aborted after the open fetal surgery. The limbs of two unoperated newborn lambs served as controls in addition to five sham-operated control limbs that had no bands applied. Nine limbs were banded without reducing blood flow assessed by laser doppler (group 1), and 6 limbs were similarly banded and released fetoscopically at 125 days' gestation. Four limbs were banded, with a mean reduction in blood flow to the limb of 18.7% (group 2) by laser doppler flowmeter. Shortly after birth the lambs were killed, and segmental limb length, circumference, joint range of motion, and histology were evaluated. At birth, banded limbs showed marked brawny edema and absence of wool distal to the band. Segmental limb measurements showed shorter distal forelimbs in banded limbs compared with controls (10.97 ± 0.95 versus 12.98 ± 0.69,
P < .05). Banded limbs were associated with progressive increase in hoof circumference (
P < .03) and a decrease in joint range of motion (
P < .003). In sharp contrast, there were no differences between fetoscopically released limbs and control limbs in any of the parameters measured. Histology of banded extremities showed edema, venous and lymphatic congestion, and fibrosis compared with controls. This model of ABS in fetal lambs is simple, reproducible, and replicates all the clinical features of extremity ABS. The data suggest that fetoscopic release of bands allows the extremity to recover and may prevent severe limb deformity caused by amniotic bands. |
doi_str_mv | 10.1016/0022-3468(95)90324-0 |
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P < .05). Banded limbs were associated with progressive increase in hoof circumference (
P < .03) and a decrease in joint range of motion (
P < .003). In sharp contrast, there were no differences between fetoscopically released limbs and control limbs in any of the parameters measured. Histology of banded extremities showed edema, venous and lymphatic congestion, and fibrosis compared with controls. This model of ABS in fetal lambs is simple, reproducible, and replicates all the clinical features of extremity ABS. The data suggest that fetoscopic release of bands allows the extremity to recover and may prevent severe limb deformity caused by amniotic bands.</description><identifier>ISSN: 0022-3468</identifier><identifier>EISSN: 1531-5037</identifier><identifier>DOI: 10.1016/0022-3468(95)90324-0</identifier><identifier>PMID: 7472956</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Amniotic Band Syndrome - pathology ; Amniotic Band Syndrome - physiopathology ; Amniotic Band Syndrome - surgery ; Animals ; Disease Models, Animal ; Edema - pathology ; Endoscopy ; Extremities - blood supply ; Extremities - pathology ; Extremities - surgery ; Female ; Fetal Diseases - pathology ; Fetal Diseases - physiopathology ; Fetal Diseases - surgery ; Fetoscopy ; Forelimb - abnormalities ; Forelimb - blood supply ; Forelimb - pathology ; Forelimb - surgery ; Gestational Age ; Hoof and Claw - pathology ; Humans ; Infant, Newborn ; Laser-Doppler Flowmetry ; Limb Deformities, Congenital ; Pregnancy ; Range of Motion, Articular ; Regional Blood Flow ; Sheep ; Treatment Outcome ; Wool</subject><ispartof>Journal of pediatric surgery, 1995-07, Vol.30 (7), p.974-978</ispartof><rights>1995</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c338t-e77b898843163262c55978132753164c96c22bc8fe9f12ca3705f1b73acf10403</citedby><cites>FETCH-LOGICAL-c338t-e77b898843163262c55978132753164c96c22bc8fe9f12ca3705f1b73acf10403</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/7472956$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Crombleholme, Timothy M</creatorcontrib><creatorcontrib>Dirkes, Kathryn</creatorcontrib><creatorcontrib>Whitney, Timothy M</creatorcontrib><creatorcontrib>Alman, Benjamin</creatorcontrib><creatorcontrib>Garmel, Sara</creatorcontrib><creatorcontrib>Connelly, Raymond J</creatorcontrib><title>Amniotic band syndrome in fetal lambs I: Fetoscopic release and morphometric outcome</title><title>Journal of pediatric surgery</title><addtitle>J Pediatr Surg</addtitle><description>A fetal lamb model of amniotic band syndrome (ABS) was developed to study the pathophysiology of banded extremities and evaluate the possibility of in utero treatment with the potential for functional recovery. Eight fetal lambs underwent banding of their extremities with umbilical tape at 100 days' gestation. Two lambs aborted after the open fetal surgery. The limbs of two unoperated newborn lambs served as controls in addition to five sham-operated control limbs that had no bands applied. Nine limbs were banded without reducing blood flow assessed by laser doppler (group 1), and 6 limbs were similarly banded and released fetoscopically at 125 days' gestation. Four limbs were banded, with a mean reduction in blood flow to the limb of 18.7% (group 2) by laser doppler flowmeter. Shortly after birth the lambs were killed, and segmental limb length, circumference, joint range of motion, and histology were evaluated. At birth, banded limbs showed marked brawny edema and absence of wool distal to the band. Segmental limb measurements showed shorter distal forelimbs in banded limbs compared with controls (10.97 ± 0.95 versus 12.98 ± 0.69,
P < .05). Banded limbs were associated with progressive increase in hoof circumference (
P < .03) and a decrease in joint range of motion (
P < .003). In sharp contrast, there were no differences between fetoscopically released limbs and control limbs in any of the parameters measured. Histology of banded extremities showed edema, venous and lymphatic congestion, and fibrosis compared with controls. This model of ABS in fetal lambs is simple, reproducible, and replicates all the clinical features of extremity ABS. The data suggest that fetoscopic release of bands allows the extremity to recover and may prevent severe limb deformity caused by amniotic bands.</description><subject>Amniotic Band Syndrome - pathology</subject><subject>Amniotic Band Syndrome - physiopathology</subject><subject>Amniotic Band Syndrome - surgery</subject><subject>Animals</subject><subject>Disease Models, Animal</subject><subject>Edema - pathology</subject><subject>Endoscopy</subject><subject>Extremities - blood supply</subject><subject>Extremities - pathology</subject><subject>Extremities - surgery</subject><subject>Female</subject><subject>Fetal Diseases - pathology</subject><subject>Fetal Diseases - physiopathology</subject><subject>Fetal Diseases - surgery</subject><subject>Fetoscopy</subject><subject>Forelimb - abnormalities</subject><subject>Forelimb - blood supply</subject><subject>Forelimb - pathology</subject><subject>Forelimb - surgery</subject><subject>Gestational Age</subject><subject>Hoof and Claw - pathology</subject><subject>Humans</subject><subject>Infant, Newborn</subject><subject>Laser-Doppler Flowmetry</subject><subject>Limb Deformities, Congenital</subject><subject>Pregnancy</subject><subject>Range of Motion, Articular</subject><subject>Regional Blood Flow</subject><subject>Sheep</subject><subject>Treatment Outcome</subject><subject>Wool</subject><issn>0022-3468</issn><issn>1531-5037</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNp9kMtKxDAUhoMoOl7eQKEr0UU1lyZpXAgiXgYG3IzrkKanGGmbMckI8_amzuDSVUL-y8n5EDon-IZgIm4xprRklaivFL9WmNGqxHtoRjgjJcdM7qPZn-UIHcf4iXF-xuQQHcpKUsXFDC0fhtH55GzRmLEt4mZsgx-gcGPRQTJ90ZuhicX8rniG5KP1q2wN0IOJUEyJwYfVR06kkAW_TjbfT9FBZ_oIZ7vzBL0_Py0fX8vF28v88WFRWsbqVIKUTa3qumJEMCqo5VzJmjAq8wqiskpYShtbd6A6Qq3Jf-cdaSQztiO4wuwEXW57V8F_rSEmPbhooe_NCH4dtZRCKMppNlZbow0-xgCdXgU3mLDRBOsJpp5I6YmUVlz_wtRT_8Wuf90M0P6FdvSyfr_VIS_57SDoaB2MFloXwCbdevf_gB_5kYIM</recordid><startdate>199507</startdate><enddate>199507</enddate><creator>Crombleholme, Timothy M</creator><creator>Dirkes, Kathryn</creator><creator>Whitney, Timothy M</creator><creator>Alman, Benjamin</creator><creator>Garmel, Sara</creator><creator>Connelly, Raymond J</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>199507</creationdate><title>Amniotic band syndrome in fetal lambs I: Fetoscopic release and morphometric outcome</title><author>Crombleholme, Timothy M ; Dirkes, Kathryn ; Whitney, Timothy M ; Alman, Benjamin ; Garmel, Sara ; Connelly, Raymond J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c338t-e77b898843163262c55978132753164c96c22bc8fe9f12ca3705f1b73acf10403</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1995</creationdate><topic>Amniotic Band Syndrome - pathology</topic><topic>Amniotic Band Syndrome - physiopathology</topic><topic>Amniotic Band Syndrome - surgery</topic><topic>Animals</topic><topic>Disease Models, Animal</topic><topic>Edema - pathology</topic><topic>Endoscopy</topic><topic>Extremities - blood supply</topic><topic>Extremities - pathology</topic><topic>Extremities - surgery</topic><topic>Female</topic><topic>Fetal Diseases - pathology</topic><topic>Fetal Diseases - physiopathology</topic><topic>Fetal Diseases - surgery</topic><topic>Fetoscopy</topic><topic>Forelimb - abnormalities</topic><topic>Forelimb - blood supply</topic><topic>Forelimb - pathology</topic><topic>Forelimb - surgery</topic><topic>Gestational Age</topic><topic>Hoof and Claw - pathology</topic><topic>Humans</topic><topic>Infant, Newborn</topic><topic>Laser-Doppler Flowmetry</topic><topic>Limb Deformities, Congenital</topic><topic>Pregnancy</topic><topic>Range of Motion, Articular</topic><topic>Regional Blood Flow</topic><topic>Sheep</topic><topic>Treatment Outcome</topic><topic>Wool</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Crombleholme, Timothy M</creatorcontrib><creatorcontrib>Dirkes, Kathryn</creatorcontrib><creatorcontrib>Whitney, Timothy M</creatorcontrib><creatorcontrib>Alman, Benjamin</creatorcontrib><creatorcontrib>Garmel, Sara</creatorcontrib><creatorcontrib>Connelly, Raymond J</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of pediatric surgery</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Crombleholme, Timothy M</au><au>Dirkes, Kathryn</au><au>Whitney, Timothy M</au><au>Alman, Benjamin</au><au>Garmel, Sara</au><au>Connelly, Raymond J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Amniotic band syndrome in fetal lambs I: Fetoscopic release and morphometric outcome</atitle><jtitle>Journal of pediatric surgery</jtitle><addtitle>J Pediatr Surg</addtitle><date>1995-07</date><risdate>1995</risdate><volume>30</volume><issue>7</issue><spage>974</spage><epage>978</epage><pages>974-978</pages><issn>0022-3468</issn><eissn>1531-5037</eissn><abstract>A fetal lamb model of amniotic band syndrome (ABS) was developed to study the pathophysiology of banded extremities and evaluate the possibility of in utero treatment with the potential for functional recovery. Eight fetal lambs underwent banding of their extremities with umbilical tape at 100 days' gestation. Two lambs aborted after the open fetal surgery. The limbs of two unoperated newborn lambs served as controls in addition to five sham-operated control limbs that had no bands applied. Nine limbs were banded without reducing blood flow assessed by laser doppler (group 1), and 6 limbs were similarly banded and released fetoscopically at 125 days' gestation. Four limbs were banded, with a mean reduction in blood flow to the limb of 18.7% (group 2) by laser doppler flowmeter. Shortly after birth the lambs were killed, and segmental limb length, circumference, joint range of motion, and histology were evaluated. At birth, banded limbs showed marked brawny edema and absence of wool distal to the band. Segmental limb measurements showed shorter distal forelimbs in banded limbs compared with controls (10.97 ± 0.95 versus 12.98 ± 0.69,
P < .05). Banded limbs were associated with progressive increase in hoof circumference (
P < .03) and a decrease in joint range of motion (
P < .003). In sharp contrast, there were no differences between fetoscopically released limbs and control limbs in any of the parameters measured. Histology of banded extremities showed edema, venous and lymphatic congestion, and fibrosis compared with controls. This model of ABS in fetal lambs is simple, reproducible, and replicates all the clinical features of extremity ABS. The data suggest that fetoscopic release of bands allows the extremity to recover and may prevent severe limb deformity caused by amniotic bands.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>7472956</pmid><doi>10.1016/0022-3468(95)90324-0</doi><tpages>5</tpages></addata></record> |
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subjects | Amniotic Band Syndrome - pathology Amniotic Band Syndrome - physiopathology Amniotic Band Syndrome - surgery Animals Disease Models, Animal Edema - pathology Endoscopy Extremities - blood supply Extremities - pathology Extremities - surgery Female Fetal Diseases - pathology Fetal Diseases - physiopathology Fetal Diseases - surgery Fetoscopy Forelimb - abnormalities Forelimb - blood supply Forelimb - pathology Forelimb - surgery Gestational Age Hoof and Claw - pathology Humans Infant, Newborn Laser-Doppler Flowmetry Limb Deformities, Congenital Pregnancy Range of Motion, Articular Regional Blood Flow Sheep Treatment Outcome Wool |
title | Amniotic band syndrome in fetal lambs I: Fetoscopic release and morphometric outcome |
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