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Biomedical subjects

F Quintana

Publications and source records attributed to F Quintana.

At least 37 records · Page 2Linked to original sources
PubMed1982

Occipitoatlantal instability and vertebrobasilar ischemia: case report.

A 37-year-old woman had occipitoatlantal instability due to hypoplasia of the occipital condyles. Neck pain and transient ischemic attacks in the vertebrobasilar territory occurred with extension of the neck, which also caused convergence spasm. Angiography demonstrated that these manifestations were due to compression of the vertebral arteries during neck extension. Immobilization of the neck in a Minerva cast resulted in complete relief of symptoms.

Adult↗
PubMed1978

Angiographic changes in a case of herpes simplex encephalitis.

A case of herpes encephalitis predominating in the right temporal lobe with unusual angiographic changes is reported. Carotid angiography revealed a right temporal mass with vascular blush and early venous filling through irregular veins. Early venous filling and vascular blush have been known for a long time with cerebral inflammatory disease, but venous drainage through irregular veins is unusual.

Aged↗
PubMed1978

Intracranial aneurysms in early childhood.

A case of an aneurysm of the middle cerebral artery in a 17-month-old child has been presented and the literature on the problem reviewed. A total of 27 aneurysms in young children (under two years of age) has been found. The characteristics that define this group of patients are: a greater proportion of aneurysms of the middle cerebral artery and its branches and of the vertebrobasilar system; greater size of the aneurysms; and frequent pseudotumor syndromes. The surgical prognosis in this group of patients is excellent. The physical and pathophysiological characteristics of these aneurysms appearing in early childhood are described.

Cerebral Angiography↗
PubMedDate not supplied

CT findings in spinocerebellar degeneration.

Thirty-five CT scans were studied from patients with several forms of spinocerebellar degeneration. Atrophy was determined by objective measurements of the number and width of cerebellar sulci, transverse diameter and surface area of the fourth ventricle, brainstem ratio, cerebellopontine angle cistern, and Evans' index. Two-thirds of the patients with Friedreich's ataxia showed moderate cerebellar atrophy and an increase in the surface area of the fourth ventricle. Severe cerebellar atrophy and enlargement of the cerebellopontine angle cistern was seen in patients with olivopontocerebellar (OPC) atrophy and idiopathic cortical cerebellar atrophy. In the OPC atrophy group there was also prominent atrophy of the brainstem and an increase in the fourth ventricle parameters. Alcoholic cerebellar degeneration showed a specific pattern of cerebellar atrophy most prominent in the superior vermis, together with a slight increase in the fourth ventricle surface, a reduction in the size of the brainstem, and an enlargement of the cerebellopontine angle cistern. Supratentorial atrophy was present only in the OPC and alcoholic atrophy groups. In one patient with spastic ataxia, CT was normal but MR imaging revealed prominent atrophy of the spinal cord. These CT patterns appear to be distinctive enough to permit the diagnosis and classification of the various forms of spinocerebellar degeneration.

Adolescent↗
PubMedDate not supplied

[Elaboration and evaluation of a fast detection system of mortality using Fourier analysis. Study of a value with maximal deviation].

BACKGROUND: To calculate all causes weekly baseline mortality and an alarm threshold using Fourier analysis. To analyse the largest outlier detected in our series. METHODS: Madrid Undertaker database from October 1988 to September 1993, was used in the analysis. Orthogonal components were detected using Fourier analysis. Expected deaths and confidence limits were fitted using Serfling method. Alarm threshold was placed at a distance of 1.96 standard deviations above baseline. RESULTS: orthogonal frequencies with significant amplitudes corresponding to periods 26, 52, 104 and 156 weeks were detected. The second was the fundamental and its multiples were harmonics. In the time domain, baseline mortality showed a winter peak, declined to a summer plateau and presented its lowest level at the end of August. 21 weeks exceeded the alarm threshold. Of these 17 were related to influenza epidemics. The largest outlier corresponded to a heat wave in July 1991. CONCLUSIONS: A procedure similar to that proposed by R. E. Serfling (1963) to calculate baseline mortality, an alarm threshold and short term extrapolation using Madrid Undertaker database (C. Borrell, 1991) is presented. Madrid Undertaker database provide accurate and timely information about all causes mortality excess in Madrid.

Disease Outbreaks↗
PubMedDate not supplied

Etiologic study of stroke in 95 young adults.

The aim of this prospective study was to determine the etiologic factors leading to stroke in a group of young adults. We studied 95 patients aged 50 years or under who were admitted with the diagnosis of stroke over a 2-year period. These patients underwent complete clinical and laboratory assessment for stroke. The etiology was established in 73 (76.8%) out of 95 cases. Arterial hypertension, embolism and atherosclerosis were found to be the most frequent causes in patients with ischemic stroke, whereas hypertension and aneurysm rupture were the most prevailing etiologies in patients with hemorrhagic stroke. Miscellaneous causes represented one fourth of all cases of the series. Coagulation abnormalities occurred in some patients, but in these cases there were also other well established causes. Paradoxical embolism was not observed. This study corroborates the importance of thorough diagnostic evaluation to establish an accurate diagnosis.

Adult↗
PubMedDate not supplied

[The CHIVA cure of varices of the lower extremities. La Cure Conservatrice et Hemodynamique de l'Insuffisance Veineuse en Ambulatoire].

Presentation of the characteristics of this technique described by the French physician C. Franceschi, in 1988. Our Department began to apply this method on may 1991 and we are the first team in Spain to carry out and systematize this cure. Up to date, 85 patients have been treated with a residual vein percentage of 18%. Morbidity is low and slight. There is no mortality. This method is considered interesting as it does not require hospitalization, conserves the vein capital of the patient, and has low labour and health care costs.

Bandages↗
PubMedDate not supplied

[Use of embolization in the treatment of pulsatile tinnitus secondary to dural arteriovenous fistula].

Three cases of dural arteriovenous fistula (DAVF) in patients who consulted for pulsatile tinnitus are reported. All were treated successfully by embolization. If DAVF is suspected, angiography of the carotid and vertebral arteries should be performed to confirm its presence and to identify sources of blood flow and venous drainage. If treatment is needed, embolization, surgery, or radiotherapy may be indicated either separately or in combination therapy. The numerous branches and site of the fistula make therapeutic embolization the procedure of choice for many cases.

Carotid Artery, Internal↗