Biomedical subjects

E Falces

Publications and source records attributed to E Falces.

11 recordsLinked to original sources

PubMed1987

Magnetic resonance imaging for diagnosis and preoperative planning in agenesis of the distal vagina.

Magnetic resonance imaging is a powerful new tool in the radiological armamentarium. Its advantages over computed tomography include better tissue differentiation, high resolution multiplanar imaging, and absence of ionizing radiation. Its advantage over ultrasound is complete depiction of anatomical detail of areas not ordinarily penetrated by the ultrasound beam, including bone, air, and bowel. We found it very useful in the evaluation of and preoperative planning for a 13-year-old girl with congenital agenesis of the distal vagina.

Adolescent↗

PubMed1987

Aesthetic anatomy of the non-Caucasian nose.

Aesthetic rhinoplasty in the non-Caucasian patient is a challenging operation, even to the experienced rhinoplastic surgeon used to operating on Caucasians. Only by thoroughly understanding the anatomic differences between the Caucasian and non-Caucasian nose can the plastic surgeon effectively manipulate the various structures to obtain an aesthetically gratifying result. The major differences in the internal and external anatomy of the Caucasian versus the non-Caucasian nose are described.

Black People↗

PubMed1986

Non-Caucasian rhinoplasty: a 16-year experience.

Rhinoplasty was performed in 134 non-Caucasians over a 16-year period. The indications and techniques for operative approaches pertinent to achieving facial balance and symmetry in the non-Caucasian are described. Alar flaring is best addressed with alar base resection. Alar base resection does not significantly narrow alar width. Reduction in interalar distance is best performed with interalar reduction. If alar flare and wide interalar distance coexist, one should always consider a secondary or tertiary procedure. Planning a secondary procedure avoids devitalizing tissues and multiple super-imposed incisions and permits minor revisions. A simplified approach to removal of excessive tip fat is discussed. Methods of addressing complications peculiar to non-Caucasian rhinoplasties are described. In order to avoid racial incongruity, one must incorporate an alar narrowing procedure, i.e., interalar reduction or alar sill advancement. The results of this study reemphasize the importance of analyzing the nose with respect to the rest of the face in order to establish guidelines for these often difficult nasal reconstructions.

Adult↗

PubMed1985

Prospective study of side effects associated with the use of silver sulfadiazine in severely burned patients.

We report the results of a prospective study of 45 burn patients in whom serum and urine levels of cream constituents (sulfadiazine and propylene glycol) were determined and correlated with clinical parameters and the presence of an immune response to sulfadiazine. Propylene glycol, measured by gas chromatography, was found in the serum of 53% of study patients. Sulfa, determined by spectroscopy, was found in the serum of all patients, with values as high as 9.1 mg/dl within 24 hours of topical application. Ninety percent of tested patients had circulating sulfadiazine antibodies, predominantly IgG. Fourteen patients died, 11 of whom had interpretable renal biopsies. Five of these biopsies showed positive immunofluorescent linear or granular staining for IgG, IgM, IgA, or C'3; none of these 5 patients had clinical evidence for the nephrotic syndrome. The association between antisulfadiazine antibodies, circulating immune complexes, immunoglobulin disposition on glomerular basement membranes, and topical application of silver sulfadiazine provides evidence for sulfadiazine sensitization in patients with severe burns.

Administration, Topical↗

PubMed1983

Clinical utilization of injectable collagen.

The applications for an injectable, highly purified form of calfhide collagen (Zyderm Collagen Implant) were first described by Knapp et al in 1977. Since that time, the material has undergone evaluation in a nationwide clinical trial in which 728 physicians participated under a cooperative protocol. In these trials--which culminated in marketing clearance by the Food and Drug Administration--over 5,000 patients were treated for a variety of soft-tissue depressions resulting from surgery, atrophy, acne, viral pox, and aging. We participated in the clinical trial and have used injectable collagen in our practices since 1977 when the material was undergoing evaluation in California. We have treated over 400 patients with injectable collagen for a variety of facial cutaneous defects. The material has proved to be an effective tool for correction of certain soft-tissue defects not previously amenable to correction, and a useful surgical adjunct. Simplicity and safety are its major advantages. The persistence of correction afforded by injectable collagen is variable, but the majority of our patients have maintained improvement twelve or more months since the end of treatment. Hence we believe that there is a definite role for injectable collagen but that its long-term persistence must still be confirmed. This paper represents our state-of-the-art assessment of injectable collagen after six years of personal experience.

Acne Vulgaris↗

PubMed1980

Smoke inhalation study.

An aggressive approach to the treatment of patients sustaining combined thermal and inhalation injuries is presented. Early and repeated bronchoscopy for diagnosis and treatment has yielded improved results.

Adolescent↗

PubMed1972