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Biomedical subjects

C Carranza

Publications and source records attributed to C Carranza.

15 recordsLinked to original sources
PubMed1989

[Mitral valve prolapse and cerebral ischemia].

We report on 10 patients suffering from cerebral ischemic episodes in whom mitral valve prolapse was diagnosed. Neurologic assessment included computerized tomography and angiographic study. In one case, the angiographic study revealed the presence of intracranial vasculitis and one woman was taking the contraceptive pill. The diagnosis of mitral valve prolapse was established on the basis of clinical grounds and electrocardiographic, Doppler study, Holter monitoring and two-dimensional echocardiographic signs. Our findings confirm that mitral valve prolapse is an etiologic factor to be considered in young adults with cerebral ischemia, although mitral valve prolapse does not exclude the possibility of other etiopathogenic conditions occurring.

Adolescent↗
PubMed1985

Acute glomerulonephritis in children. An evolutive morphologic and immunologic study of the glomerular inflammation.

This study deals with 80 children showing a clinically typical acute nephritic syndrome with proteinuria and/or hematuria, edema, and hypertension. Their ages ranged between 2 years 5 months and 16 years; 36 cases were female. In 73 cases a streptococcal infection was demonstrated; the remaining 7 cases did not show morphologic differences with the former. No previous renal disease nor familial history of nephropathies were elicited. In every case a renal biopsy was obtained in the first 60 days of clinical disease; in 46 cases a second renal biopsy was obtained sometime between 6 and 45 months since the beginning of the disease. In 3 cases the renal tissue was considered to be normal by light microscopy, immunofluorescence and electron microscopy in both the first and second biopsies. These 3 patients were not considered as cases of morphologic acute glomerulonephritis in spite of showing a typical clinical picture and they are not included in the evaluation of the glomerular inflammatory evolution. In all the remaining 77 cases C3 granular and segmentary intramembranous and mesangial dense deposits were found in the first biopsy. The second biopsy showed morphologic and immunologic normalization in 27% of the cases, slight lesions in 56% and an increase in severity in 17% of the cases.

Acute Disease↗
PubMed1984

Clinical and morphological recovery between two episodes of acute glomerulonephritis: a light and electron microscopic study with immunofluorescence.

A 4 year-old girl presented with 2 episodes of acute glomerulonephritis with clinical and morphological recovery between them. Both episodes were preceded by impetigo. The first and third renal biopsies showed glomerulitis with diffuse dense deposits in the mesangium, segmentary intramembranous dense deposits, atypical "humps" and granular C3. The second biopsy, taken between episodes, was considered to be normal. Two years and 5 months after the second episode the clinical evaluation and laboratory tests were normal.

Acute Disease↗
PubMedDate not supplied

[Renal function in normal and malnourished children given different doses of vasopressin in continuous infusion].

The effects of vasopressin administered by continuous infusion (0.75 and 0.5 mU/m2/minutes) was studied in two groups of three normal and two groups of 5 and 8 malnourished children given 0.5 and 0.3 mU/m2/minute. The following parameters were analyzed: urine volume, osmolality, water reabsorption, PAH, urea and inulin clearances, Na and K urinary excretion. Malnourished children had a urine volume 3 to 5 times higher than the normal groups. Vasopressin increased urine volume initially, but a mild antidiuretic effect followed in the normal groups. In malnourished children with a high CH2O, antidiuresis showed quite important figures with vasopressin. A transient fall in PAH and inulin clearances was observed with vasopressin in both malnourished groups with a mild drop in the normal group. Natriuresis with a higher % of the filtered sodium excretion was observed in the malnourished groups and in normal children with 0.5 mU of vasopressin. These results show that vasopressin had similar effects, but at a different level in the normal and malnourished children that we studied.

Diuresis↗