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O Iribarren

Publications and source records attributed to O Iribarren.

6 recordsLinked to original sources
PubMed2006

Description of endoscopic ventricular anatomy in myelomeningocele.

OBJECTIVE: The purpose of this work is to present our endoscopic neuroanatomical findings of a series of myelomeningocele and hydrocephalus patients, treated with endoscopic third ventricular cisternostomy (ETVC), in order to describe ventricular configuration abnormalities in this group of patients, in which this neurosurgical procedure has limited performance. METHOD: We checked the videos of 10 endoscopic third ventricular cisternostomies of myelomeningocele patients taken during 24 months as from December 1998. A previous guideline is designed to record anatomic variables in the lateral ventricles, IIIrd ventricle, and basal cisterns. The topic is analyzed in view of the necropsy and imaging background data. RESULTS: The ETVC of lateral ventricles showed: absence of septum (9/10); absence of anteroseptal vein (8/10); absence of choroid plexus and thalamostriate vein (0/10); absence of fornix (1/10): small foramen of Monro (4/10). The ETVC of the IIIrd ventricle showed: impossibility of recognizing any mammillary bodies (4/10); presence of septations (5/10); presence of atypical veins in the floor (6/10); translucent floor (5/10); floor umbilications (5/10); absence of infundibulum (4/10); arachnoid adherences (7/10); and visual contact of basilar artery (4/10). CONCLUSION: There are categorical structural alterations in the ventricular system of myelomeningocele patients that are well correlated with previous necropsy and imaging reports. The ventricular system of dysraphic children presents severe anatomic alterations, which alter the reference points of the classical endoscopic third ventricular cisternostomy.

Cisterna Magna↗
PubMed1996

[Necrotizing fasciitis].

Necrotizing soft tissue infection or necrotizing fasciitis is a rapidly progressive inflammation that leads to necrosis of subcutaneous tissues and fascia with secondary necrosis of skin. It is usually attributed to group AB hemolytic streptococci but may be caused by anaerobic bacteria. It occurs with higher frequency in elders, diabetics, alcoholics and patients with impaired immunity. Report mortality rates range from 14 to 80%. An early and timely surgical debridement with remotion of all necrotic tissue is mandatory. Wounds must be closed with splint skin grafts as soon as the local viability of tissues has been assured and the general conditions of the patients allow the procedure. Antibiotics nutritional and hemodynamic support are also necessary.

Fasciitis, Necrotizing↗
PubMed1991

[Shortened preoperative preparation in diffuse hyperthyroid goiter: experience in 34 patients].

Conventional preparation of goitrous hyperthyroid patients using lugol and propranolol may take 2 weeks. This period may be shortened using sodium iopodate and dexamethasone. We used 500 mg of sodium iopodate and 1 mg dexamethasone for 4 days in 34 hyperthyroid patients. Surgical indication derived from failure to medical treatment (68%), large goiter (27%) or adverse reaction to PTU (6%). Clinical euthyroidism was achieved after 4 days in all patients. T3 levels decreased from 482 +/- 26.2 to 137.6 +/- 3.7 ng/dl and T4 from 20.6 +/- 1.04 to 15.2 +/- 0.5 micrograms/dl (p < 0.005). Surgery was uneventful in 33 patients, one subject developed supraventricular tachycardia responsive to verapamil. Electron microscopy of the removed thyroid tissue revealed marked decrease of superficial villi and large phagosomes. Thus, sodium iopodate and dexamethasone are effective and safe for preoperative preparation of hyperthyroid patients.

Adolescent↗
PubMed1990

[Lymphomas of the parotid region].

Parotid gland lymphomas are very uncommon. Two patients with this condition were treated in the last decade. Surgery should be used only for diagnosis and becomes unnecessary when adenopathy is present, since a lymph node biopsy will establish the diagnosis.

Adolescent↗
PubMed1988

Clinical evaluation of flap viability with a dermal surface fluorometer.

A dermal surface fluorometer was used to monitor vascular perfusion in 22 patients who underwent reconstructive surgical procedures with a variety of flaps (e.g., skin flaps, musculocutaneous flaps, fasciocutaneous flaps, and Z-plasties). Sodium fluorescein (1.5 mg per kilogram of body weight) was administered intravenously at the completion of the operative procedure. Quantitative fluorescence readings were obtained at different points in each flap by means of the surface fluorometer (Fluoroscan). The readings were taken at several time intervals and compared with those of normal skin (control). A perfusion ratio was determined in each case according to the following formula: flap reading/(normal skin control reading X 100). Partial necrosis occurred in 4 patients, correlating with low fluorescein perfusion measurements. From our findings, it appears that a perfusion ratio of 15% or greater 10 minutes following injection will accurately predict tissue viability. No systemic reactions were observed in these patients. We believe that this minimally invasive technique should be of considerable assistance in the postoperative evaluation of flap viability.

Adult↗