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Biomedical subjects

G Ortiz

Publications and source records attributed to G Ortiz.

At least 55 records · Page 3Linked to original sources
PubMed1991

T-plasty modification of the Bankart procedure for multidirectional instability of the anterior and inferior types.

Forty patients who had a diagnosis of multidirectional instability of forty-two shoulders had a modified Bankart operation in which a T-shaped incision was made in the anterior portion of the capsule, with advancement of the inferior flap superiorly and of the superior flap medially. All of the patients had been injured during athletic activities. Some degree of anterior labral injury was present in thirty-eight of the forty-two shoulders. Half of the patients had generalized ligamentous laxity. The patients were followed for an average of three years (range, two to seven years). Four patients had episodes of instability after the operation. Three had a single episode of posterior subluxation during throwing, one had recurrent posterior subluxation that subsequently was treated by posterior stabilization, and one had anterior subluxation while he was diving from a high board. The average loss of external rotation after the operation was 5 degrees with the arm at the side and 4 degrees with the arm abducted 90 degrees. Satisfaction of the patient was rated excellent for forty (95 per cent) of the shoulders, good for one shoulder, and fair for one shoulder. However, throwing athletes found that they were unable to throw a ball with as much speed as before the operation.

Adolescent↗
PubMed1990

Arthroscopic acromioplasty. Technique and results.

Of forty-four patients who were treated by arthroscopic acromioplasty from July 1984 through August 1986, forty were available for analysis. The average age was 43.2 years, and 86 per cent of them had participated regularly in sports but were disabled due to symptoms of impingement. All patients had had a minimum of six months of non-operative therapy. The final diagnoses, which were based on the findings at arthroscopy and on clinical examination, plain radiographs, and arthrograms, were Stage-II impingement in twenty-four patients, a partial-thickness tear of the rotator cuff in six, and a full-thickness tear of the rotator cuff in ten. The shoulders were scored before the operation and again at follow-up. Preoperatively, thirty-six shoulders were rated as poor and four, as fair. After a minimum follow-up of twelve months (average, seventeen months), the scores had increased in all but one patient. The result was rated good or excellent in twenty-nine (73 per cent) of the forty patients: twenty of the twenty-four who had Stage-II impingement, four of the six who had a partial-thickness tear, and six of the ten who had a full-thickness tear. The over-all average time to return to work was nine days, and the average time to return to sports was 2.4 months. Of the thirty-three patients who had participated in sports, twenty-five (76 per cent) had returned to sports activity at the time of the most recent follow-up. The average time until full recovery was 3.8 months. There were no complications, and, over-all, thirty-eight (92 per cent) of the forty patients were satisfied with the result. In four patients, the result was a failure, and three of the four had a reoperation that relieved the symptoms.

Acromioclavicular Joint↗
PubMed1989

[Hypertrophic osteopathy and acropachy associated with noncirrhotic alcoholic liver disease. Apropos a case].

Hypertrophic osteoarthropathy (HOA) may be an idiopathic condition or may be secondary to other diseases, the most common of which is bronchogenic carcinoma. Among non neoplastic etiologies, it is commonly associated with chronic liver disease, usually cirrhosis and chronic active hepatitis. The concomitant occurrence of HOA and hepatic steatosis is another association that has recently been reported. We report here a 70-year-old male with periostitis, clubbing of the fingers and alcoholic hepatitis stenosis. We emphasize the need to perform observational studies to validate this association.

Aged↗
PubMed1988

Thyrotroph function assessed by sensitive measurement of thyrotropin with three immunoradiometric assay kits: analytical evaluation and comparison with the thyroliberin stimulation test.

We evaluated the analytical and clinical performance of three "sensitive" immunoradiometric assay (IRMA) kits (Tandem-R TSH HS, Hybritech, Inc.; EchoClonal TSH, Bio-Rad; Coat-A-Count TSH IRMA, Diagnostic Products Corp.) for measurement of thyrotropin (TSH) and compared their performance against a "regular" IRMA (ARIA-HT, Becton-Dickinson) to determine whether these assays might eliminate the need to perform the thyroliberin (TRF) stimulation test. We concluded that the Tandem and EchoClonal kits may obviate the need to perform TRF stimulation tests in some patients. Using only the basal TSH concentration to predict the TSH response to TRF, we found all three sensitive TSH assays to be useful for detecting abnormal thyrotroph function. Dose-response, linearity, analytical recovery, and specificity were acceptable for all kits, but intra-assay precision at very low TSH concentrations and analytical sensitivity differed considerably among the kits. Using the EchoClonal assay, we established a normal reference interval for TSH of 0.4-4.6 milli-int. units/L.

Adult↗
PubMed1979

New revenue and improved services in handling ambulatory radiology patients.

In 1978, the Pharmacy Department at the University of California, Irvine, Medical Center succeeded in establishing a procedure whereby all drugs used for outpatient radiology procedures were dispensed from the pharmacy and were no longer handed out by radiology clerks. Additional revenue was generated for the medical center because the pharmacy started to charge patients for the drugs, which had not been done previously. This was accomplished with no increase in personnel. The procedures have been operating successfully for six months.

Appointments and Schedules↗
PubMedDate not supplied

Depression scores following migraine treatment in patients attending a specialized center for headache and neurology.

OBJECTIVE: To determine the changes in clinical characteristics and depression levels among patients following treatment for migraine. BACKGROUND: Epidemiologic studies have provided consistent evidence regarding an association between migraine and depression. In Puerto Rico, however, migraine has not yet been systematically investigated. METHODS: A chart review of 144 Puerto Rican patients who presented with migraine, diagnosed according to the International Headache Society criteria, and depression over a 2-year period was performed. The level of depression, before and after migraine treatment, was evaluated using the Zung Self-rating Depression Scale. RESULTS: The mean age of patients was 37.0 +/- 14.4 years; 77.1% were women. More than half (52.8%) reported severe headache and 56.9% reported a monthly frequency of five attacks or more. Nearly 9% were using antidepressant therapy and 8% were under psychiatric treatment. The mean Zung index score at baseline was 50.6 +/- 10.9. Following treatment with triptans, the intensity and frequency of migraine and the Zung index score decreased significantly (P<.00001). A trend for a greater reduction in Zung index scores among patients receiving triptan medications for more than a year was demonstrated (P =.07). CONCLUSIONS: These results indicate that migraine treatment with triptans appears to be effective in decreasing the headache frequency and intensity, and depression levels, independent of antidepressant medication use or psychiatric treatment.

Adult↗
PubMedDate not supplied

Arthroscopic labral debridement. A three-year follow-up study.

UNLABELLED: This is a retrospective review of 40 patients who underwent arthroscopic labral debridement of the shoulder. All patients were active participants in sports involving use of the shoulder. All patients presented with shoulder pain. Only 40% were found to have distinct glenohumeral instability on examination. At surgery, all patients had labral injury. Ten patients had anterosuperior labral tears, 20 had anteroinferior labral tears or detachments, and 10 had posteroinferior labral tears or detachments. Outcome was assessed at a minimum of 2 years (average, 43 months) postoperatively. Overall, only 7% of the patients had significant symptomatic relief at followup. However, 72% noted relief of symptoms during the 1st year after surgery, but there was deterioration over time. CONCLUSION: Arthroscopic labral debridement is not an effective long-term solution for symptomatic relief in the overhead athlete.

Adolescent↗
PubMedDate not supplied

GGRGDSPCA peptide: a new antiscarring agent on glaucoma filtration surgery.

BACKGROUND AND OBJECTIVE: GGRGDSPCA synthetic peptide competes for integrin receptor in scar formation after glaucoma filtering surgery in a rabbit model. The purpose of this study was to evaluate the use of this peptide and compare it with mitomycin on glaucoma filtering surgery. MATERIALS AND METHODS: Posterior sclerectomy was performed in both eyes of 17 rabbits. The right eye received GGRGDSPCA (p605) at 0, 4, 8, 12, and 16 days after. Nine left eyes received saline as a control; the remaining 8 eyes received mitomycin C at 0.5 mg/mL intraoperative. Intraocular pressures and biomicroscopy were evaluated as well as bleb function. RESULTS: Intraocular pressure decreased significantly in both the peptide and mitomycin treated eyes in comparison with the saline group (P = 0.0003). Pressure was similar in both groups. The blebs showed filtrating function in a functional analysis at day 21 and 41 in the mitomycin cases as well as in the peptide group. Histologic analysis performed in both peptide and mitomycin groups showed inhibitory effect in fibrocellular and collagen organization with bleb formation. CONCLUSIONS: The p605 peptide showed to be similar to mitomycin C in controlling and improving glaucoma filtering surgery in rabbits. This alternative may potentially be useful for similar purposes in humans for the control of glaucoma and improvement of filtering surgery.

Animals↗