PubMed Health⌕ Search

Biomedical subjects

J Rosado

Publications and source records attributed to J Rosado.

11 recordsLinked to original sources
PubMed1999

[Antibodies against Trichinella spiralis in the rural population of the Province of Cordillera, Bolivia].

A seroepidemiological study was conducted to determine the prevalence of antibodies to Trichinella spiralis among rural residents of Cordillera province, Santa Cruz Department, Bolivia. Using the enzyme-linked immunosorbent assay (ELISA), 234 serum samples were examined, and antibodies were detected in seven of the samples (3%). The results document for the first time the presence of human infestation with Trichinella in Bolivia and suggest the need to strengthen trichinelosis surveillance in the municipal slaughterhouses, to prevent the clandestine slaughter of animals, and particularly to ensure that residents and meat producers in the area become aware of the dangers of this zoonosis.

Abattoirs↗
PubMed1999

Nutrition of Honduran mothers/caretakers.

In 1996, the Honduran Ministry of Health conducted a national micronutrient survey of children 12-71 months old, which also included an assessment of the nutrition status of their mothers/caretakers. The 1,126 mothers/caretakers who participated in the survey tended to be short and plump. About 15% of them were at obstetric risk by virtue of their short stature and/or low body weight. About 9% had chronic energy deficiency (CED), but 27% were at least 20% overweight. CED was associated with socioeconomic indicators of poverty. Risk factors for being at least 20% overweight included being over 30 years old, not breast-feeding, having attended no higher than grade 4, 5, or 6 of primary school, coming from a wealthier household, and living in San Pedro Sula or medium-sized cities. Among the women surveyed, 26% of nonpregnant and 32% of pregnant mothers/caretakers were anemic. The likely principal cause of anemia was the low intake of bioavailable iron from food and, in some cases, excessive iron loss associated with intestinal parasites, especially hookworm. Only 50% of the mothers/caretakers participating in this study had received iron during their last pregnancy, and just 13% had received postpartum vitamin A. The results highlight the need to develop and implement an effective program to control iron deficiency anemia in women of reproductive age, including by fortifying such widely consumed foods as processed wheat and maize flour and by routinely administering iron supplements to high-risk groups. Postpartum vitamin A supplementation should be encouraged to protect both the mother and newborn infant against vitamin A deficiency.

Adult↗
PubMed1997

Can trasmitral Doppler E-waves differentiate hypertensive hearts from normal?

Physiological models of transmitral flow predict E-wave contour alteration in response to variation of model parameters (stiffness, relaxation, mass) reflecting the physiology of hypertension. Accordingly, analysis of only the E-wave (rather than the E-to-A ratio) should be able to differentiate between hypertensive subjects and control subjects. Conventional versus model-based image processing methods have never been compared in their ability to differentiate E-waves of hypertensive subjects with respect to age-matched control subjects. Digitally acquired transmitral Doppler flow images were analyzed by an automated model-based image processing method. Model-derived indexes were compared with conventional E-wave indexes in 22 subjects: 11 with hypertension and echocardiographically verified ventricular hypertrophy and 11 age-matched nonhypertensive control subjects. Conventional E-wave indexes included peak E, E, and acceleration and deceleration times. Model-based image processing-derived indexes included acceleration and deceleration times, potential energy index, and damping and kinematic constants. Intergroup comparison yielded lower probability values for model-based compared with conventional indexes. In the subjects studied, Doppler E-wave images analyzed by this automated method (which eliminates the need for hand-digitizing contours or the manual placement of cursors) demonstrate diastolic function alteration secondary to hypertension made discernible by model-based indexes. The method uses the entire E-wave contour, quantitatively differentiates between hypertensive subjects and control subjects, and has potential for automated noninvasive diastolic function evaluation in large patient populations, such as hypertension and other transmitral flow velocity-altering pathophysiological states.

Aged↗
PubMed1993

[Emphysematous pyelonephritis].

A case of emphysematous pyelonephritis to E. coli, in a 63-year-old female diabetic patient is presented herein. Imaging techniques (plain abdomen X-Ray, ultra-sonography and computed tomography) allowed the authors to make the diagnosis. Percutaneous nephrostomy, combined with medical therapeutics, contributed to a favourable clinical evolution of the patient.

Diabetes Complications↗
PubMedDate not supplied

[Electrophysiologic effect of intravenous propafenone in supraventricular tachycardia].

The electrophysiologic effects of intravenous propafenone were studied in twenty six patients with supraventricular tachycardias. Ten patients (38%) with intranodal reentrance tachycardia common type, and sixteen patients (62%) atrioventricular orthodromic reentrance tachycardia. Propafenone (2 mg/kg intravenously) given over ten minutes period caused termination of the intranodal reentrance tachycardia in 60% of the cases and 50% to the patients with atrioventricular reentrance tachycardia. The antiarrhythmic effects observed are related to the slowing of the conduction velocity and to the prolongation of the refractoriness in the AV node and accessory pathways preventing the reentrance mechanism. The reinduction of the tachycardia was possible in 46% of the patients. This effects was more significative in the group with accessory pathways (50%), and 40% of the patients with intranodal reentrance. The supraventricular tachycardia was inducible by programmed electrical stimulation in 46% of the patients. None of the patients developed side effects to the administration of the propafenone.

Adolescent↗
PubMedDate not supplied

[Exercise test in patients with permanent pacemakers].

From June 1988 to June 1990 we studied fifty patients who had implantation of a pacemaker. (31 females and 19 males). All of them underwent stress test with Bruce's protocol. Patients were divided in two groups; pacemaker-independent (PI) and pacemaker-dependent (PD). Over 50% of the patients inhibited the pacemaker with their own rhythm, most of them had sinus dysfunction. Complete A-V block was predominant in PD. The group of PI achieved more mets and had more oxygen consumption. Blood pressure response was similar in both groups.

Adult↗
PubMedDate not supplied

[Positive exercise test in hypertensive patients correlated with coronary angiography].

With the purpose of evaluate the state of the coronary arteries in hypertensive patients with positive exercise test, 82 patients were selected, 50 male and 32 female with mean age of 56.9 +/- 13.2 years. Angiography was normal in 25 patients thirteen patients had a single coronary arteries narrow of less than 50% and 44 cases with significant coronary arteries lesions of more than 50%. The parameters obtained in the exercise test are not significant for statistic purposes. Systolic hypertension or flat response was more frequent in the group with advanced coronary lesions with a predicted positive value in coronary obstructions of 66 and 75%. We conclude that 70% of hypertensive patients have obstructive coronary lesions of some degree.

Arterial Occlusive Diseases↗
PubMedDate not supplied

[Disorders of the rhythm and conduction in patients operated on for a total correction of tetralogy of Fallot].

The purpose of this paper is to analyze the incidence of arrhythmias and conduction disturbances in 81 patients after total surgical repair of tetralogy of Fallot. The study was done at the National Institute of Cardiology "Ignacio Chávez" from 1974 to 1989. Sixty five patients (78.9%) developed a pattern of right bundle block and ten patients (12.3%) had additional left anterior hemiblock following surgery. Two patients had complete heart block so pacemaker was implanted. The incidence of serious ventricular arrhythmias was found in 11 patients often polymorphic ventricular premature complexes. One case sustained monomorphic ventricular tachycardia. Electrophysiological study demonstrated that it source was the scar of the right ventricle outflow tract. This tachycardia is now under control with specific antiarrhythmic therapy.

Arrhythmias, Cardiac↗
PubMedDate not supplied

[Electrofulguration of refractory supraventricular paroxysmal tachycardias. (Experiences of the "Ignacio Cháves" National Institute of Cardiology].

The purpose of this paper is to report our experience with endocardial catheter ablation in the recurrent episodes of paroxysmal supraventricular tachycardia in ten patients. All cases were referred because previous drug trials had failed to control arrhythmia. In four patients with Wolff Parkinson White syndrome, the ablation was used in the accessory pathway, in five patients in the his bundle region, and one patient in the AV perinodal region. The follow-up ranges from 4 to 15 months. We had a complete success rate of 40% and a partial success in other 40%. We did not have any complications during the procedures.

Adolescent↗