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Biomedical subjects

F Vázquez Rueda

Publications and source records attributed to F Vázquez Rueda.

At least 19 recordsLinked to original sources
PubMed2001

[First results with Integra artificial skin in the management of severe tissue defects in children].

In extreme cases of tissue defects, wound coverage after excision may be problematic because of the limited existence of donor sites. An option for temporary wound coverage used in the management after early scar release is a dermal substitute: Integral artificial skin. The biosinthetic material consists of un upper silicone film and a lower layer of porous cross-linked bovine collagen and chondroitin-6-sulfate as a template for dermal regeneration after staged tangencial necrectomy. In the third and fourth weeks following application the silicone layer was easily removed and the newly formed neodermis covered with widely unmeshed thin split thickness autograft. We report 6 patients with tissue defects with open fractures in three cases, one hemorrhagic necrosis of the skin by meningococcemia who requiring amputations of all four extremities and two traumatic necrosis. Other patient has a retractil scar. All were treated with Integral and epidermical autograft. The good results with Integral regarding recovery may affect initial treatment and reconstruction planning after extensive wound injuries with tissue defects to obtain immediate wound closure.

Biocompatible Materials↗
PubMed2001

[Index finger pollicization for congenitally deficient first finger of the hand in children].

Pollicization is a single-stage neurovascular pedicle transfer of the index digit to function as a thumb. The objective of this study is to investigate the results of index finger pollicization for correction of congenital deficiency of the first ray in pediatric hand. We have done 6 pollicizations of index fingers in 6 hands (there were 2 right hands, 2 left hands, and 1 bilaterally) in 5 patients (4 boys and 1 girl) who had absent or nonfunctioning thumbs (type III-V of Blauth's classification). Associated anomalies where numerous and included radial club hand, mirror hand and cardiovascular and urologic anomalies. The average time of Kirschner wire extraction was 32 days (30 to 36 days) and to beginning the hand rehabilitation at 5 degrees to 10 degrees day. The average age at pollicization was 5.5 years (range 2 to 8 years), and follow-up averaged 8 years (5 to 11 years). The cosmetic and functional results were excellent, with manual dexterity of prehension and opposition. Pollicization in children can be performed at least 2 years of age, to due of minor risk of neurovascular lesion but without delayed the cortical representation of the pollicized finger.

Child↗
PubMed2000

[Lymphangioma of the spermatic cord].

We report a new case of spermatic cord lymphangioma in a infant 2 years old. The initial diagnosis was funicular hydrocele. The treatment was the local excision of tumor and the diagnostic was histological. Postoperative course was excellent. Must be explored the transillumination of the mass which would have led us to think other the diagnosis different from that of the cord hydrocele before the operation since it would have given negative. During the operation, must the assured that the cystic anomaly is limited to spermatic cord, to evite recurrences in the postoperative course.

Child, Preschool↗
PubMed2000

[Testicular teratoma and epididymal adrenal choristoma].

We report a case of mature testicular cystic teratoma in a 28-month old boy. Due to the characteristics of the palpation and its partial transillumination, it may be confused with a hydrocele. They emphasize on the rarity and benign nature of the peculiarities and refer to its prognosis, usually benign, when is diagnosed at about 2 years of age, providing that a very careful examination of the histological sections rules out the presence of anaplastic cells. A left inguinal orchiectomy was performed because it was not possible to establish a line of cleavage between the tumor and the normal tissue. The pathologic examination revealed a benign lesion. An adrenal choristoma in the caput epididymis was also observed. Postoperative course was satisfactory.

Adrenal Glands↗
PubMed2000

[Comparative study of different methods of pleural drainage in an experimental model of pneumothorax].

OBJECTIVE: To observe the usefulness of several procedures for draining pneumothorax in an animal model and to identify the best pleural drainage system with minimal impairment of respiratory function. METHOD: Thirty-four New Zealand white rabbits weighting 1687 +/- 78 g and aged a mean 59 days were randomly placed in groups as follows. Unilateral pneumothorax was induced in the first problem group (P1) rabbits (n = 10) by thoracostomy, with pleural drainage. In the second problem group (P2) of rabbits (n = 10), bilateral pneumothorax was similarly induced by thoracostomy with pleural drainage. The control groups underwent unilateral (C1; n = 7) and bilateral (C2; n = 7) thoracostomy and drainage. Every 7 minutes the chest tube was connected successfully in each animal to an underwater seal with a dead-space volume of 35.58 ml (neonatal Bülau unit) or to a 3,940 ml system (chest drainage unit) and to pleural aspirations of -5 and -20 cmH2O. We analyzed mortality, fluctuations of the hydrostatic column of the underwater seal, heart rate (HR), respiratory rate (RR), PaCO2, SaO2, pH and arterial blood gas measures. RESULTS: Intraoperative mortality was significantly higher (particularly in the P2 group) when connection was to a large volume system without aspiration. Recovery after pneumothorax was more satisfactory with aspiration of -5 and -20 cmH2O. CONCLUSIONS: The results suggest that a pleural drainage unit with a large dead space between the pleural cavity and the underwater seal is a frequent cause of respiratory failure or insufficiency. We believe that when an underwater seal without pleural suction is applied, the Bülau unit should be used with the smallest possible volume.

Animals↗
PubMed2000

[Evaluation of perioperative psychological response to short-stay hospital surgery].

AIM: To determine the psychological response in children undergoing short-stay ambulatory surgery. PATIENTS AND METHODS: < psychological responses (CDS, STAIC-E); factor 2: personality (EPQ-J and STAIC-R) and adaptability (TAMAI); factor 3: anxiety and hospital fears (HFRS). Student's paired t-test was used to compare clinical variables. RESULTS: < 8.17 +/- 2.10). The most frequent diagnosis in boys was phymosis and that in girls was inguinal hernia. Forty-one children had previously been hospitalized, of which 29 had undergone surgery. Factorial analysis of the variables explained 46.8% of variance. STAIC-E and STAIC-R scores significantly decreased in the postoperative period. Girls had higher HFRS scores than boys. STAIC-R scores were lower in previously hospitalized children. FILE values in the previous 12 months correlated with increased STAIC-R scores. CONCLUSIONS: Elective ambulatory surgery in children minimizes emotional disruption to the child. In this study no differences were observed in the STIC-R and STAIC-E scores before and after surgery. Girls had higher levels of anxiety and fear of surgery. Previously hospitalized children, with or without surgery, had lower anxiety levels. Family problems during the 12 months prior to surgery increased the children's anxiety and depression.

Adolescent↗
PubMed1998

[Renal hydatid disease in childhood. Report of two cases].

Hydatid disease of the kidney is rare and is responsible for only 1-5% of all hydatid disease. Primary hepatorrenal association with hydatid disease is a 3%. A pre-operative diagnosis is often not considered because of the rarity of the disease and the infrequent occurrence of an isolated disease lesion of the kidney. These diagnosis may be mistaken for hepatic hydatid cyst. The accepted treatment is often the partial or total nephrectomy. We report two patients 4 years-old, of both sexes. On admission, a palpable mass in the right upper quadrant of the abdomen is the only clinical sign. In the first case, the pre-operative diagnosis was renal hydatid cyst and hepatorrenal hydatid disease in the second case. A patient who underwent at cyst enucleation only and total pericystectomy was performed in the other patient. The post-operatives courses were excellent in both patients. Total excision of the cyst and its adventitia with conservation of the renal parenchyma is the most desirable treatment, but it's not always feasible.

Animals↗
PubMed1998

[Clinical and epidemiological analysis of 1,451 pediatric surgery consultations in a third level hospital referred from the primary health care sector].

OBJECTIVE: The aim of this study was to determine the pediatric surgery demands in a third level hospital due to referrals from the primary health care sector in order to better plan the work and continuing education programs. PATIENTS AND METHODS: The total number of patients (1,451) consulting a service of pediatric surgery for the first time and referred from the primary care sector during a twelve month period were studied. RESULTS: A total number of 1,451 children, with a maximum age of 14 years consulted. The assistential pressure was 22.01 consultations/pediatrician/day in one year. Consultations by children older than 7 years of age comprised 31.42% of the total. As for the distribution of these consultations, 61.26% were with a previous appointment, 38.74% were remitted to the second level. The most frequent reasons for consultations were inguinal hernia and hydrocele (30.46% of the cases), followed by phimosis (28.8%), undescended testis (8.2%) and skin neoplasms (5.78%). CONCLUSIONS: The demands of pediatric surgery consultations referred from the primary health care sector is very important. It is necessary to adapt the continuing education programs so that pediatric residents and primary medicine physicians are more aware of the surgical pathologies that are most frequently found in primary care centers and to decrease the assistential pressure of the pediatric surgery consultations in the hospital.

Adolescent↗
PubMed1996

[The hair-thread tourniquet syndrome of the toes and penis].

We present eight cases of the hair-thread tourniquet syndrome which affected the toes in 6 cases and presented strangulation of the penis in two. All patients were infants and the mechanism of injury was the strangulation by hair or thread wrapped around an appendage. Neither lesions were promptly recognized by their physicians and the patients were seen in the emergency room with swelling, erythema and a circumferential scar with the typical distal edema. The lesions had ischemic signs, but without tissue necrosis. All patients were treated by immediate removal of the constricting fibers and sometimes a simple vertical, short and deep incision over the area of strangulation, avoiding injury to tendons and digital nerves and vessels, was performed. The potential risk of amputation and the need for a premature diagnosis and treatment are stressed.

Child, Preschool↗
PubMed1994

[Duplication of the colon: a case report].

We report a new case of intestinal duplication in a child of two years old with acute abdomen. At the laparotomy was found to be due to tubular duplication ascending colon. A resection duplication joined a tract of normal colon where are was performed, with termino-terminal anastomosis. The postoperative course was excellent.

Abdomen, Acute↗
PubMed1993

[Bone lengthening in children].

Since June 1987, were realized 45 limb lengthening (40 lower and 5 upper) in 34 children with between 3-15 years old. A dynamic axial fixator (DAF) system with telescoping capabilities, permits a slow distraction through a osteotomy and callotasis in 36 bones, and chondrodiatasis in 5. Twenty-six unilateral lengthening were realized and 5 alineation-lengthening, 20 congenital and 11 acquired causes. 14 bilateral lengthening were done in 5 patients (4 achondroplastic and one Turner's syndrome). The average increase in length was 5.5 cm. for limb and ranged from 4.3 to 8.0 cm. The healing index was 32.1 days for each centimeter of length gained in the femurs and 5.2 cm. with 28.2 days/cm. in the tibias. The complications were superficial pin tract infection (73%), that were not generally treated with antibiotic, 2 knee valve, 2 knee subluxation and one patella subluxation with knee flexion contracture.

Adolescent↗
PubMed1993

[Treatment of radial club hand with double articulated external fixators].

Congenital absence of the radius is a rare malformation, characterized by radial deviation of the hand to more than 90 degrees. Early treatment with plaster cast use to be enough to correct radial deviation, making easier surgical correction on several years later. We report a case of a newborn with radial club hand absence of the thumb of the right hand, bilateral hydronephrosis and bilateral cryptorchidism. Was treated with a new procedure, permitting wrist centralization, coupled with osteotomy and callostasis of the ulnar diaphysis using external fixation. We obtained an important success with this serial lengthening of the ulna.

Child, Preschool↗