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L A Muñoz

Publications and source records attributed to L A Muñoz.

6 recordsLinked to original sources
PubMed2000

Influence of refraction on tonometric readings after photorefractive keratectomy and laser assisted in situ keratomileusis.

PURPOSE: To determine the decrease of Goldmann tonometry after photorefractive keratectomy (PRK) and laser assisted in situ keratomileusis (LASIK) according to refraction prior to surgery. METHODS: Prospective simultaneous comparative case series of 53 myopic eyes (53 patients) that underwent PRK and 50 (50 patients) that underwent LASIK using the Summit Excimed SVS plus (Summit Technology, Inc., Walthan, MA, U.S.A.). PRK and LASIK were subdivided by refractive error into two subgroups of more than or less than -5 diopters (D). Central tonometric readings were taken prior to surgery and 12 months after surgery. RESULTS: In LASIK and PRK subgroups of more than -5 D, 85.7% (24) and 69.6% (24), respectively, gave lower readings than those taken before surgery. In LASIK and PRK subgroups of less than -5 D, 77.3% (17) and 53.3% (16), respectively, gave lower readings. The difference between the two is significant (p < 0.001). Average tonometry falls by 2.8 mmHG in the LASIK subgroup of more than -5 D (p < 0.001) and by 2.8 mmHG in the LASIK subgroup of less than -5 D (p < 0.001) and by 1.7 mmHG in the PRK subgroup of more than -5 D (p < 0.010). In PRK subgroup of less than -5 D, the tonometric changes are not significant (p = 0.971). CONCLUSIONS: High previous refraction (in PRK) and technique used determines lower final tonometric readings, bringing about more frequent and significant decreases in LASIK than in PRK for errors of more than and less than -5 D.

Adolescent↗
PubMedDate not supplied

[Prospective analysis in nursing: a methodology to be disseminated].

This paper intends to motivate the nurses in the evaluation of any teaching or health institutions. The authors propose the prospective analysis in nursing as a new methodological option to be used in that evaluation. The conceptual bases, as well as the methods and instruments, of the research are presented.

Education, Nursing↗
PubMedDate not supplied

Crystals occurring in pulmonary cytology specimens. Association with Aspergillus infection.

Birefringent needlelike crystals in rosette or wheat-sheaf-like arrangements were found in pulmonary cytology specimens from 11 of 65 patients who had either sputum cultures positive for Aspergillus or histologically confirmed pulmonary aspergilloma. No crystals were found in specimens from 60 control patients with and without known fungal disease. The crystals were most often associated with A. niger infection (45.4%), followed by A. flavus (16%). Crystals were also observed in one case of A. fumigatus infection and in one case in which the species was not determined. In two cases, crystals were found more than one year before sputum cultures became positive; in one of these patients, a fungus ball was not identified by X ray until five years after the first appearance of the crystals in the sputum. Sixty-four percent of the patients with crystals also showed moderate to severe cytologic atypia. The crystals are thought to be calcium oxalate. We conclude that the presence of birefringent needlelike crystals with rosette or wheat-sheaf-like arrangements in pulmonary cytology specimens is a reliable marker for the presence of Aspergillus infection, which may be detected before cultures are positive or a fungus ball is evident on X ray.

Aged↗