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1.
Cleft Palate Craniofac J ; 60(4): 413-420, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-34904896

RESUMO

The aim of this study was to examine internal responsiveness and estimate minimally important differences (MIDs) for CLEFT-Q scales.In this prospective cohort study, participants completed the CLEFT-Q appearance and health-related quality of life (HRQL) scales before and six months after cleft-related surgery.Seven cleft centres in Canada, USA and UK participated.Patients were ages 8-29 years with CL/P.Patients underwent rhinoplasty, orthognathic or cleft lip scar revision surgery.Internal responsiveness was examined using Cohen's d effect sizes (ESs) based on the following interpretation: 0.20-0.49 small, 0.50-0.79 moderate and ≥ 0.80 large. MIDs were estimated using two distribution-based approaches.Participants had a rhinoplasty (n = 31), orthognathic (n = 21) or cleft lip scar revision (n = 18) surgery. Most participants were males (56%) and aged 8-11 years (41%). Following rhinoplasty, ESs were larger for the nose (0.92, p = 0.001) and nostrils (0.94, p < 0.001) scales than for the face scale (0.51, p = 0.003). MIDs ranged between 6.2-10.4. For orthognathic surgery, larger ES was observed for the jaws scale (1.80, p < 0.001) compared with the teeth (1.16, p < 0.001), face (1.15, p = 0.001) and lips (0.94, p < 0.001) scales. MIDs ranged between 5.9-14.4. In the cleft lip scar revision sample, the largest ES was observed for the nose scale (0.76, p = 0.03), followed by lips (0.58, p = 0.009) and cleft lip scar (0.50, p = 0.043) scales. MIDs ranged between 6.4-12.3.CLEFT-Q detected change in key outcomes for three cleft-specific surgeries, providing evidence of its responsiveness. Estimated MIDs will aid in interpreting this PROM.


Assuntos
Fenda Labial , Masculino , Humanos , Feminino , Fenda Labial/cirurgia , Estudos Prospectivos , Qualidade de Vida , Cicatriz , Lábio
2.
Int J Oral Maxillofac Surg ; 51(10): 1296-1304, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35125269

RESUMO

The aim of this systematic review was to review the literature on hearing impairment and ear anomalies in patients with craniofacial microsomia and to determine their prevalence. Sixty-two records including 5122 patients were included. Ear anomalies were present in 52-100% of patients. The most reported external ear malformations were microtia, pre-auricular tags, and atresia of the external auditory canal. Ossicular anomalies were the most reported middle ear malformations, whereas the most reported inner ear malformations included oval window anomalies, cochlear anomalies, and anomalies of the semicircular canals. Hearing loss in general was reported in 29-100% of patients, which comprised conductive hearing loss, mixed hearing loss, and sensorineural hearing loss. Between 21% and 51% of patients used hearing aids, and 58% underwent a surgical intervention to improve hearing. The relationship between different phenotypes of craniofacial microsomia and the type and severity of hearing loss is mostly unclear. In conclusion, the high prevalence of ear and hearing anomalies in patients with craniofacial microsomia underlines the importance of audiological screening in order to facilitate individual treatment.


Assuntos
Síndrome de Goldenhar , Perda Auditiva Neurossensorial , Perda Auditiva , Síndrome de Goldenhar/epidemiologia , Perda Auditiva Condutiva/epidemiologia , Perda Auditiva Neurossensorial/diagnóstico , Humanos , Fenótipo , Estudos Retrospectivos
3.
Int J Oral Maxillofac Surg ; 50(10): 1303-1311, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33752938

RESUMO

The aim of this multicentre retrospective cohort study was to describe and categorize the types of ocular and adnexal anomalies seen in patients with craniofacial microsomia (CFM) and to determine their prevalence. In addition, the relationship between the OMENS-Plus and Pruzansky-Kaban classification for each patient and the presence of ocular anomalies was investigated. A total of 881 patients with CFM from four different craniofacial centres were included. Data on ocular anomalies were gathered from the patient charts. Ocular anomalies were present in 33.9% of patients. Four subgroups of ocular and adnexal anomalies were identified. Type I ocular anomalies were present in 22.2%, type II in 19.0%, type III in 18.4%, and type IV in 14.5%. Several potentially preventable and treatable ocular anomalies were identified. Higher OMENS-Plus classification orbit and soft tissue scores and Pruzansky-Kaban classification mandible scores were associated with an increased risk of ocular anomalies. Based on these results and the clinical implications ocular anomalies may have, we underline the importance of targeted ophthalmological screening in CFM. Healthcare professionals should be aware of the possibility of ocular anomalies in these patients, especially during the critical period for visual development.


Assuntos
Síndrome de Goldenhar , Estudos de Coortes , Síndrome de Goldenhar/epidemiologia , Humanos , Mandíbula , Prevalência , Estudos Retrospectivos
4.
Int J Oral Maxillofac Surg ; 49(9): 1107-1114, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32217034

RESUMO

Ocular anomalies may occur in craniofacial microsomia (CFM). The aim of this systematic review was to review the literature on ocular anomalies and their incidence, in order to estimate the need for ophthalmological screening in CFM patients. Online databases were searched, and data on the number of patients, type and incidence of ocular anomalies, and visual acuity were extracted. Four subgroups of ocular and adnexal anomalies were identified, to provide an overview of the different anomalies. Twenty-five papers analysing 1419 patients in total were included. Ocular anomalies were documented in 6.7-100% of patients. The most reported type I ocular anomalies were eyelid coloboma, lipodermoids, and orbital dystopia. The most reported type II ocular anomalies were epibulbar dermoid, microphthalmia, and anophthalmia. Ptosis and strabismus were the most reported type III anomalies, and irregular astigmatism was the most reported type IV ocular anomaly. Visual impairment in general was reported in 8-71.4% of patients, with severe visual impairment in 11.1-71.4% and amblyopia in 16.3%. This study provides a detailed overview of ocular anomalies in CFM and their prevalence. Furthermore, we propose a new classification to organize ocular anomalies into four clinically relevant subtypes. Finally, the high prevalence of ocular anomalies and visual impairment in this study suggests that CFM patients should undergo ophthalmological screening at least once during the sensitive period.


Assuntos
Coloboma , Síndrome de Goldenhar , Estrabismo , Face , Humanos , Prevalência
5.
Int J Oral Maxillofac Surg ; 48(9): 1169-1176, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30878275

RESUMO

Craniofacial microsomia (CFM) is characterized by unilateral or bilateral underdevelopment of the facial structures arising from the first and second pharyngeal arches, but extracraniofacial anomalies may also be present. This retrospective study provides an overview of the prevalence, types, and characteristics of extracraniofacial anomalies in patients with CFM. All patients diagnosed with CFM seen at four craniofacial centres were included. The patient charts were reviewed and data on patient characteristics and extracraniofacial anomalies were extracted. Of the 991 patients included, 462 (47%) had extracraniofacial anomalies. The prevalence of extracraniofacial anomalies in the various tracts was as follows: vertebral 28%, central nervous system 11%, circulatory system 21%, respiratory tract 3%, gastrointestinal tract 9%, and urogenital tract 11%. Compared to patients without extracraniofacial anomalies, those with an extracraniofacial anomaly were at higher risk of having additional extracraniofacial anomalies in other tracts. The prevalence of extracraniofacial anomalies was greater in patients with bilateral CFM, a more severe mandibular deformity, or facial nerve or soft tissue deformity. Patients with CFM should be screened for extracraniofacial anomalies by physical examination with specific attention to the circulatory, renal, and neurological tracts. Diagnostically, electrocardiography, echocardiography, spine radiography, and renal ultrasound should be performed for patients at risk of extracraniofacial anomalies.


Assuntos
Síndrome de Goldenhar , Face , Humanos , Mandíbula , Estudos Retrospectivos , Coluna Vertebral
6.
Int J Oral Maxillofac Surg ; 47(1): 27-34, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28736116

RESUMO

Extracraniofacial anomalies, including central nervous system (CNS) anomalies, may occur in craniofacial microsomia (CFM). This systematic review was performed to provide an overview of the literature on the prevalence and types of CNS anomalies and developmental disorders in CFM, in order to improve the recognition and possible treatment of these anomalies. A systematic search was conducted and data on the number of patients, patient characteristics, type and prevalence of CNS anomalies or developmental delay, and correlations between CFM and CNS anomalies were extracted. Sixteen papers were included; 11 of these described developmental disorders. The most common reported anomalies were neural tube defects, corpus callosum agenesis or hypoplasia, intracranial lipoma, Arnold-Chiari malformations, hydrocephaly, ventriculomegaly, and cerebral hypoplasia. The prevalence of CNS anomalies in CFM varied from 2% to 69%. The prevalence of developmental disorders, such as intellectual disability, language or speech developmental delay, and neuropsychomotor delay, varied from 8% to 73%. This study suggests that CNS anomalies and developmental disorders are seen in a substantial proportion of patients with CFM. Further research should focus on determining which features of CFM are correlated with CNS anomalies to allow adequate screening and timely care.


Assuntos
Deficiências do Desenvolvimento/epidemiologia , Síndrome de Goldenhar/epidemiologia , Malformações do Sistema Nervoso/epidemiologia , Anormalidades Múltiplas , Criança , Pré-Escolar , Humanos , Lactente , Recém-Nascido , Prevalência
7.
Int J Oral Maxillofac Surg ; 47(11): 1365-1372, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30722936

RESUMO

Craniofacial microsomia (CFM) is characterized by an underdevelopment of the facial structures arising from the first and second branchial arches, but extracraniofacial anomalies such as vertebral anomalies may be present. This retrospective study was performed to determine the prevalence and types of vertebral anomalies and the association with other extracraniofacial anomalies in patients with CFM. The charts of all patients diagnosed with CFM seen in four craniofacial centres were reviewed for the presence of vertebral anomalies, symptoms, extracraniofacial anomalies, and the OMENS classification including the Pruzansky-Kaban type of mandibular deformity. A total of 991 patients were included and 28% of the patients had vertebral anomalies. The most common vertebral anomalies included scoliosis, block vertebrae, and hemivertebrae. Only 44% of the patients with vertebral anomalies had clinical symptoms; torticollis, back or neck pain, and limited neck movement were the most frequently seen. The prevalence of vertebral anomalies was greater in patients with bilateral CFM and in patients with a more severe mandibular deformity, and/or orbit, facial nerve, and/or soft tissue involvement. Patients with vertebral anomalies had significantly more extracraniofacial anomalies than patients without vertebral anomalies. Therefore, patients with vertebral anomalies should undergo cardiac, renal, and neurological evaluation.


Assuntos
Síndrome de Goldenhar/complicações , Doenças da Coluna Vertebral/complicações , Coluna Vertebral/anormalidades , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Síndrome de Goldenhar/classificação , Síndrome de Goldenhar/epidemiologia , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Retrospectivos , Doenças da Coluna Vertebral/classificação , Doenças da Coluna Vertebral/epidemiologia
8.
Int J Oral Maxillofac Surg ; 46(10): 1319-1329, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28669484

RESUMO

Craniofacial microsomia (CFM) is characterized by a heterogeneous underdevelopment of the facial structures arising from the first and second branchial arches, but extracraniofacial malformations such as vertebral anomalies also occur. This systematic review provides an overview of the literature on the types and prevalence of vertebral anomalies found in patients with CFM. A systematic search was conducted. Data on the number of patients, patient characteristics, types and prevalence of vertebral anomalies, and other associations between CFM and vertebral anomalies were extracted from the articles identified. Thirty-one articles were included. Seventeen articles described both the prevalence and types of vertebral anomalies in CFM, five articles described solely the types of vertebral anomalies in CFM, and nine articles reported solely the prevalence of vertebral anomalies in CFM. The vertebral anomalies most often reported in CFM are hemivertebrae, block vertebrae, scoliosis/kyphoscoliosis, and spina bifida. These anomalies are mostly present in the cervical and thoracic spine and ribs. The reported prevalence of vertebral anomalies in CFM varies from 8% to 79%. To diagnose vertebral anomalies early in patients with CFM, further research should focus on determining which patients with CFM are at risk of vertebral anomalies.


Assuntos
Síndrome de Goldenhar/complicações , Coluna Vertebral/anormalidades , Anormalidades Múltiplas , Humanos
9.
J Plast Reconstr Aesthet Surg ; 69(3): 402-8, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26638831

RESUMO

INTRODUCTION: Treacher Collins syndrome is a rare disorder characterized by several orofacial findings including malar deficiency and hypoplastic mandibles. These patients often require a combined orthodontic-orthognathic approach to correct their malocclusion. This is most often characterized by a short posterior vertical height and an anterior open bite. Orthognathic correction often requires Le Fort I and bilateral sagittal split osteotomies. No long-term stability results have been reported after bimaxillary surgery in Treacher Collins patients. METHODS: A retrospective review of all Treacher Collins patients evaluated for orthognathic surgery by a single surgeon from 1993 to 2007 was performed. Patients were divided into groups who required surgery and those who did not. Part I analyzed the cephalometric differences between the surgical (S) and nonsurgical (NS) groups. Part II of the study assessed the preorthodontic treatment (T1), preoperative (T2), immediate postoperative (T3), and 1-year postoperative (T4) cephalometric measurement variables to determine the net surgical movement (T3 - T2) and relapse (T4 - T3). RESULTS: Twenty-two patients met the inclusion criteria, of which 11 had occlusal relationships requiring orthognathic surgery. Nine out of 11 chose to have surgery. At baseline, surgical patients exhibited a statistically significant retruded maxilla as measured by SNA and midface length compared to the NS group. In addition, the S group also had an increased gonial angle. There were significant movements in all maxillary and mandibular measurements. There was a significant relapse in the palatal plane angle when the maxilla was anteriorly impacted, with a 2.8-mm average relapse of the advancement. Relapse of the counterrotation movement of the mandible was identified, but this was not significant. Relapse did not affect the final occlusal result, which may have been compensated with postsurgical orthodontic treatment. CONCLUSION: Bimaxillary orthognathic surgery in the Treacher Collins patients may be performed safely with long-term dental and skeletal stability.


Assuntos
Mandíbula/cirurgia , Disostose Mandibulofacial/cirurgia , Maxila/cirurgia , Procedimentos Cirúrgicos Ortognáticos/métodos , Adolescente , Cefalometria/métodos , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Seguimentos , Hospitais Pediátricos , Humanos , Anormalidades Maxilomandibulares/diagnóstico por imagem , Anormalidades Maxilomandibulares/cirurgia , Masculino , Mandíbula/diagnóstico por imagem , Disostose Mandibulofacial/diagnóstico por imagem , Maxila/diagnóstico por imagem , Procedimentos Cirúrgicos Ortognáticos/efeitos adversos , Radiografia , Estudos Retrospectivos , Medição de Risco , Índice de Gravidade de Doença , Fatores de Tempo , Resultado do Tratamento
10.
J Plast Reconstr Aesthet Surg ; 66(10): 1346-55, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23829958

RESUMO

Craniofacial fibrous dysplasia is a benign developmental anomaly in which normal bone is replaced by fibro-osseous tissue. The aim of this study was to audit the patient population at a tertiary paediatric centre and report our treatment protocols. A retrospective chart review of all patients with craniofacial fibrous dysplasia treated at the Hospital for Sick Children between 1999 and 2010 was performed. The treatment algorithm used by our centre is presented. A total of 55 patient records were reviewed; 37 patients had sufficient documentation for study; 27 (16 male, 11 female) patients underwent surgery at our institution, of these patients, 26 had post-operative follow up of greater than one year (mean 41 months; median 24 months). Mean age at presentation was 9.9 years (median 10 years) and mean age of surgery was 13 years. Ten patients underwent surgery on the fronto-orbital region, 7 of the calvarium, 2 the skull base and 8 upon tooth-bearing bones. Fourteen cases underwent debulking surgery as their primary therapy whereas 13 patients had complete resection. Nine patients experienced recurrence and all but one case of these occurred in patients that underwent debulking therapy. When age of surgery is considered, total resection and reconstruction or debulking surgery after skeletal maturity has a lower recurrence rate (1/7 cases) than earlier surgery (8/16). Complete resection at any age and debulking surgery once skeletal maturity has been reached may be associated with lower recurrence rates than incomplete resections at an earlier age. Patients with McCune-Albright syndrome may benefit from repeated debulking procedures rather than complex resections and reconstructions.


Assuntos
Ossos Faciais/cirurgia , Displasia Fibrosa Óssea/cirurgia , Padrões de Prática Médica , Crânio/cirurgia , Adolescente , Algoritmos , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Recidiva , Estudos Retrospectivos , Resultado do Tratamento
11.
Cleft Palate Craniofac J ; 48(5): 532-7, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21091369

RESUMO

OBJECTIVE: To investigate the use of intravenous ketorolac and iliac crest bupivacaine infusion in the management of iliac crest donor-site pain in the pediatric cleft population. The null hypothesis was there is no difference with respect to pain scores between ketorolac and iliac crest bupivacaine infusion as analgesic adjuncts to intravenous opioids. METHODS: A total of 54 children and adolescents (27 boys, 27 girls) undergoing alveolar cleft repair or Le Fort I osteotomy were assigned randomly in a prospective, single-blinded fashion to one of three groups: intravenous ketorolac plus iliac crest normal saline infusion, intravenous ketorolac plus iliac crest bupivacaine infusion, or iliac crest bupivacaine infusion alone. Iliac crest infusions and ketorolac were administered for 48 hours or until discharge, whichever occurred first. All patients received morphine via a patient-controlled analgesia device. MAIN OUTCOME MEASURE(S): Primary outcome was pain score, and secondary outcomes were morphine consumption and satisfaction scores. RESULTS: Pain scores, morphine consumption, and satisfaction scores were not significantly different among groups. Estimated costs were significantly higher for bupivacaine infusion than intravenous ketorolac. CONCLUSIONS: Iliac crest donor-site pain is well managed in this patient population. Intravenous ketorolac and iliac crest bupivacaine infusion provide comparable analgesia for iliac crest bone graft donor-site pain in children and adolescents.


Assuntos
Anestésicos Locais/uso terapêutico , Anti-Inflamatórios não Esteroides/uso terapêutico , Transplante Ósseo , Bupivacaína/uso terapêutico , Fissura Palatina/cirurgia , Ílio/transplante , Cetorolaco/uso terapêutico , Dor Pós-Operatória/prevenção & controle , Adolescente , Analgésicos Opioides/administração & dosagem , Analgésicos Opioides/uso terapêutico , Anestésicos Locais/administração & dosagem , Anti-Inflamatórios não Esteroides/administração & dosagem , Bupivacaína/administração & dosagem , Criança , Feminino , Humanos , Infusões Intravenosas , Cetorolaco/administração & dosagem , Masculino , Morfina/administração & dosagem , Morfina/uso terapêutico , Osteotomia de Le Fort , Medição da Dor , Satisfação do Paciente , Estudos Prospectivos , Método Simples-Cego , Resultado do Tratamento
12.
J Craniomaxillofac Surg ; 30(6): 361-6, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12425991

RESUMO

INTRODUCTION: Tuberous sclerosis is a hamartoneoplastic syndrome, which may involve multiple organ systems. Oral hard tissue manifestations of the syndrome have been described in the literature only as recently as 1955. Patients who presented with clinical manifestations of tuberous sclerosis did not routinely undergo oral surveys to rule out 'lesions', and consequently data on 'lesions' in the maxillofacial complex is scant. Ten cases have been found in the English language literature, which describe maxillofacial 'lesions', which may be tumours, new growths, neoplasms or overgrowths occurring in patients diagnosed with tuberous sclerosis. PURPOSE: To review the literature for all maxillofacial lesions associated with tuberous sclerosis and to present an eleventh case of a patient with a maxillofacial lesion diagnosed as having tuberous sclerosis. RESULTS: Eleven cases were found with maxillofacial fibroblastic lesions associated with tuberous sclerosis. These lesions were all fibrous benign neoplasms found in the maxillofacial bony complex. CONCLUSIONS: Maxillofacial fibroblastic lesions in tuberous sclerosis have various histopathological presentations, some of which may be difficult to differentiate. Consequently, close microscopic examination of these lesions is necessary so that adequate surgical treatment is provided.


Assuntos
Doenças Mandibulares/congênito , Esclerose Tuberosa/congênito , Pré-Escolar , Diagnóstico Diferencial , Dermatoses Faciais/congênito , Neoplasias Faciais/congênito , Feminino , Hemangioma/congênito , Humanos , Neoplasias Mandibulares/congênito , Nevo/congênito
13.
J Craniofac Surg ; 12(6): 519-24; discussion 525-6, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11711817

RESUMO

The objective of the study was to identify the proportions closest to normal and those indicating mild-to-moderate and severe degrees of disproportion. Eight proportion indices were analyzed in five craniofacial regions of 125 Down's syndrome patients, based on a total of 985 data points. More than two thirds of the patients fell within the normal range, although more than one quarter were abnormal (disproportionate). All statistical summaries were based on z-scores (adjusting for age and sex differences), converted into descriptive anthropometric categories to yield a simplified frequency distribution for each proportion index. Normal proportions were harmonious in 55.9% of patients. Disproportions were mild to moderate in 66.4%, severe in 33.6%. The highest frequency of harmony was found in the head (70.2%), the lowest in the orbits (40.8%). The highest percentage of mild-moderate disproportion was found in the face (79.3%). The highest percentage of severe disproportions was recorded in the intercanthal index of the orbits (44.7%) and the smallest frequency in the face (20.7%). In the five craniofacial regions among the normal proportions, harmonies were more frequent than disharmonies. Among the disproportions, the percentage of mild-moderate ones was greater than those of severe degree.


Assuntos
Síndrome de Down/patologia , Face , Adolescente , Adulto , Fatores Etários , Antropometria , Cefalometria , Criança , Pré-Escolar , Orelha Externa/patologia , Feminino , Cabeça/patologia , Humanos , Lactente , Masculino , Mandíbula/patologia , Maxila/patologia , Nariz/patologia , Órbita/patologia , Fatores Sexuais , Crânio/patologia , Estatística como Assunto , Dimensão Vertical
14.
J Craniofac Surg ; 12(6): 533-43, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11711819

RESUMO

Craniofacial deformities caused by therapeutic radiation-induced bone growth inhibition can occur in up to 100% of survivors of childhood head and neck cancers. The mechanism of radiation-induced craniofacial bone growth inhibition is poorly understood. The objective of this study is to establish a model of radiation-induced craniofacial bone growth inhibition to study the pathophysiology of radiation on growing membranous bone. Seven-week-old male New Zealand white rabbits were randomized into 4 groups (n = 10/group) and received a single dose of orthovoltage radiation (0, 15, 25, or 35 Gy) to the right orbital-zygomatic complex. Serial radiographs and computed tomography scans were performed for cephalometric analysis, bone volume, and bone density measurements until skeletal maturity at 21 weeks. Statistically significant ( P < 0.05) reductions in orbital-zygomatic complex linear bone growth, bone volume, and bone density were found after radiation with 25 or 35 Gy compared with nonirradiated control animals. A significant ( P < 0.05) decrease in orbital-zygomatic complex volume was noted after 15-Gy radiation but there were no significant effects on linear bone growth as assessed by cephalometric analysis at this dose. This study establishes the rabbit orbital-zygomatic complex as a suitable model for the study of radiation-induced craniofacial bone growth inhibition and will permit investigation into the underlying cellular and molecular basis of this injury.


Assuntos
Órbita/efeitos da radiação , Zigoma/efeitos da radiação , Análise de Variância , Animais , Densidade Óssea/efeitos da radiação , Cefalometria , Modelos Animais de Doenças , Relação Dose-Resposta à Radiação , Processamento de Imagem Assistida por Computador , Masculino , Mandíbula/diagnóstico por imagem , Mandíbula/crescimento & desenvolvimento , Mandíbula/efeitos da radiação , Osso Occipital/diagnóstico por imagem , Osso Occipital/crescimento & desenvolvimento , Osso Occipital/efeitos da radiação , Órbita/diagnóstico por imagem , Órbita/crescimento & desenvolvimento , Palato/diagnóstico por imagem , Palato/crescimento & desenvolvimento , Palato/efeitos da radiação , Coelhos , Doses de Radiação , Lesões Experimentais por Radiação/fisiopatologia , Distribuição Aleatória , Crânio/diagnóstico por imagem , Crânio/crescimento & desenvolvimento , Crânio/efeitos da radiação , Base do Crânio/diagnóstico por imagem , Base do Crânio/crescimento & desenvolvimento , Base do Crânio/efeitos da radiação , Estatística como Assunto , Tomografia Computadorizada por Raios X , Zigoma/diagnóstico por imagem , Zigoma/crescimento & desenvolvimento
15.
Am J Physiol Regul Integr Comp Physiol ; 281(4): R1097-104, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11557615

RESUMO

Our objective was to test the hypothesis that acute exposure of human skin vasculature to nicotine may have deleterious effects on endothelial function. Vasoconstriction and vasorelaxation in isolated perfused human skin flaps (approximately 8 x 18 cm) derived from dermolipectomy specimens were assessed by studying changes in skin perfusion pressure measured by a pressure transducer, and skin perfusion was assessed by a dermofluorometry technique (n = 4 or 5). It was observed that nicotine (10(-7) M) amplified (P < 0.05) the norepinephrine (NE)-induced concentration-dependent (10(-7)-10(-5) M) increase in skin vasoconstriction compared with the control. This amplification effect of nicotine in NE-induced skin vasoconstriction was not blocked by the nicotine-receptor antagonist hexamethonium (10(-6) M) or the cyclooxygenase inhibitor indomethacin (10(-5) M). It was also observed that ACh and nitroglycerin (NTG) elicited a concentration-dependent (10(-8)-10(-5) M) vasorelaxation in skin flaps preconstricted with 8 x 10(-7) M of NE. The vasorelaxation induced by ACh was attenuated (P < 0.05) in the presence of nicotine (10(-7) M) compared with the control. However, skin vasorelaxation induced by NTG was not affected by nicotine (10(-7) M). ACh and NTG are known to induce endothelium-dependent and -independent vasorelaxation, respectively. The present findings were interpreted to indicate that acute exposure of human skin vasculature to nicotine was associated with 1) amplification of NE-induced skin vasoconstriction and 2) impairment of endothelium-dependent skin vasorelaxation. Cyclooxygenase products and nicotine receptors blocked by hexamethonium were not involved in the amplification of NE-induced skin vasoconstriction by nicotine. These findings may provide further insight into the pathogenesis of skin vasospasm in skin flap surgery and skin ischemic disease associated with cigarette smoking or use of smokeless tobacco.


Assuntos
Vasos Sanguíneos/efeitos dos fármacos , Nicotina/farmacologia , Agonistas Nicotínicos/farmacologia , Pele/irrigação sanguínea , Sistema Vasomotor/efeitos dos fármacos , Acetilcolina/farmacologia , Adulto , Idoso , Inibidores de Ciclo-Oxigenase/farmacologia , Relação Dose-Resposta a Droga , Feminino , Fluorometria , Humanos , Técnicas In Vitro , Pessoa de Meia-Idade , Nitroglicerina/farmacologia , Norepinefrina/farmacologia , Perfusão , Receptores Nicotínicos/metabolismo , Retalhos Cirúrgicos , Vasoconstritores/farmacologia , Vasodilatadores/farmacologia , Sistema Vasomotor/fisiologia
16.
J Reconstr Microsurg ; 17(5): 335-40, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11499467

RESUMO

The reverse-flow radial forearm flap provides excellent coverage for distal upper-limb defects. It is simply raised and does not require microsurgical skills. However, since its vascular pedicle is reversed, its venous outflow can be significantly diminished because of the venous valves. The authors present the case of a 16-year-old patient with a sagittal amputation of the radial aspect of the right thumb, who manifested at the time of surgery marked venous engorgement of a reverse-flow radial forearm flap. This was successfully relieved by the placement of a mechanical leech consisting of a Silastic rubber catheter--of the kind used to gain central vascular access in newborns--introduced in the lumen of the reversed vein at the extremity of the flap. This permitted intermittent evacuation of blood from the flap postoperatively, contributing to the success of this procedure. The technique used is detailed and pertinent literature is reviewed.


Assuntos
Amputação Traumática/cirurgia , Antebraço/irrigação sanguínea , Antebraço/cirurgia , Aplicação de Sanguessugas/métodos , Procedimentos de Cirurgia Plástica/métodos , Retalhos Cirúrgicos/irrigação sanguínea , Polegar/lesões , Polegar/cirurgia , Adolescente , Amputação Traumática/fisiopatologia , Antebraço/fisiopatologia , Humanos , Masculino , Transplante de Pele/métodos , Transplante de Pele/fisiologia , Retalhos Cirúrgicos/fisiologia , Polegar/irrigação sanguínea , Veias/fisiopatologia , Veias/cirurgia
17.
J Craniofac Surg ; 12(4): 362-8, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11482621

RESUMO

The rate of, and possible risk factors for, postoperative craniofacial infection is unclear. To investigate this problem, we reviewed 349 cases of craniofacial skeletal procedures performed from 1996 to 1999 at our institution. Infection rate was determined and correlated with the use of implants, operative site, and cause of deformity. The inclusion criteria consisted of all procedures requiring autologous or prosthetic implantation in craniofacial skeletal sites, as well as all procedures involving bone or cartilage resection, osteotomies, debridement, reduction and/or fixation. Procedures that did not involve bone or cartilage surgery were excluded. The criteria for diagnosis of infection included clinical confirmation and one or more of 1) intravenous or oral antibiotic treatment outside of the prophylactic surgical regimen; 2) surgical intervention for drainage, irrigation, and or debridement; and 3) microbiological confirmation. Among the 280 surgical cases that fit the inclusion criteria and had complete records, there were 23 cases of postoperative infection (8.2%). The most common site for postoperative infection was the mandible (infection rate = 16.7%). Multiple logistic regression analysis revealed gunshot wound to be the most significant predictor of postoperative infection. Additionally, porous polyethylene implantation through a transoral route was correlated with a significant risk of postoperative infection.


Assuntos
Craniotomia/efeitos adversos , Procedimentos de Cirurgia Plástica/efeitos adversos , Infecções Relacionadas à Prótese/epidemiologia , Infecção da Ferida Cirúrgica/epidemiologia , Adulto , Distribuição de Qui-Quadrado , Traumatismos Craniocerebrais/cirurgia , Anormalidades Craniofaciais/cirurgia , Feminino , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Modelos Logísticos , Masculino , Traumatismos Maxilofaciais/cirurgia , Ontário/epidemiologia , Polietilenos/efeitos adversos , Infecções Relacionadas à Prótese/etiologia , Estudos Retrospectivos , Fatores de Risco , Infecção da Ferida Cirúrgica/etiologia , Ferimentos por Arma de Fogo/cirurgia
18.
J Craniofac Surg ; 12(4): 373-9; discussion 380, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11482623

RESUMO

Measurements (23 projective linear, 2 angular) taken in the 6 craniofacial regions of 127 patients with Down's syndrome showed that 63.1% (1,836 of 2,908) were within normal limits and 36.9% (1,072) were outside them. Abnormal measurements were subnormal in 90.8% (973) and supernormal in 9.2% (99). All statistical summaries were based on z scores (adjusting for age and sex differences) classified into a small number of ranges to yield a simplified frequency distribution for each measurement. The purpose of the study was to identify the measurements closest to normal and those indicating the most severe degrees of sub- or supernormality. Approximately a quarter of normal measurements were classified as optimal, and half the subnormal or supernormal measurements were classified as severe. Intercanthal width had the highest frequency of optimal measurements (93.7%, 119 of 127), head circumference the smallest (28.6%, 36 of 126). Knowledge of the frequency of extreme abnormalities in the craniofacial regions will help during visual examination of patients with Down's syndrome. This study found the highest percentage of severely subnormal measurements in the orbital region (57.8%, 74 of 128) and the smallest in the labio-oral region (32.7%, 16 of 49). The measurement with the highest proportion of severely subnormal to all subnormal values was the palpebral fissure length (68%, 51 of 75), and the nose width had the smallest proportion (14.3%, 1 of 7).


Assuntos
Cefalometria/estatística & dados numéricos , Síndrome de Down/patologia , Face/patologia , Adolescente , Adulto , Criança , Pré-Escolar , Orelha Externa/patologia , Humanos , Lactente , Valores de Referência , Crânio/patologia
19.
Facial Plast Surg Clin North Am ; 9(3): 475-87, 2001 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11457709

RESUMO

Excellence in mandibular fracture repair requires anatomic restoration of the displaced bone segments, maintenance of the reduction until bone union has been confirmed, and minimization of surgical stigmata. Repairs should ideally be cost-effective, reproducible, adaptable, and expeditiously executed. Fractures of two subregions of the mandible, the condylar neck and the symphysis, can benefit from minimally invasive surgical techniques. The use of these techniques in the mandible is reviewed.


Assuntos
Endoscopia , Fraturas Mandibulares/cirurgia , Humanos , Côndilo Mandibular/lesões , Fraturas Mandibulares/diagnóstico por imagem , Procedimentos Cirúrgicos Minimamente Invasivos , Radiografia
20.
Am J Med Genet ; 101(3): 279-82, 2001 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-11424146

RESUMO

We report on a patient with a unique constellation of anomalies comprising trigonomicrocephaly, asymmetric severe micrognathia, large ears, atrioventricular septal defect, vertebral anomalies, bilateral cutaneous syndactyly of fingers and toes, unilateral cryptorchidism and multiple café-au-lait spots. The mother of the propositus has multiple café-au-lait spots. Search of POSSUM and the London Dysmorphology Database (LDDB) uncovered no similar case. We think that this patient represents a new acrocraniofacial dysostosis syndrome.


Assuntos
Anormalidades Múltiplas/patologia , Orelha/anormalidades , Microcefalia/patologia , Micrognatismo/patologia , Anormalidades Múltiplas/genética , Acrocefalossindactilia/patologia , Manchas Café com Leite/genética , Manchas Café com Leite/patologia , Disostose Craniofacial/patologia , Saúde da Família , Defeitos dos Septos Cardíacos/patologia , Humanos , Lactente , Deformidades Congênitas dos Membros/patologia , Masculino , Sindactilia/patologia , Síndrome
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