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Biomedical subjects

E Ruiz

Publications and source records attributed to E Ruiz.

At least 181 records · Page 10Linked to original sources
PubMed1975

[Study of interventricular septal defects with equal aortic and pulmonary artery pressures. Classification by clinical and computer methods of 70 cases].

Application of various methods of classification to a group of 70 cases of ventricular septal defect with high pulmonary artery hypertension allowed a comparative study between the various methods aiming at distinguishing the forms with low from high pulmonary artery resistance. The reference clinical classification provides supplementary informations derived from the natural or post-operative course and eventually from the microscopic examination. The first automatic classification relies on the study of a single criterion: the pulmonary arteriolar resistance and the systemic resistance ratio. A second classification is based on the attribution of points to some clinical or haemodynamic signs resulting in a score orienting the classification of every individual. Multifactorial analysis methods deal with all the available informations for the overall group, and suppose the use of a computer. The informatic methods make it possible to study the classifying value of every sign. Correlations were established between these various techniques and the medical classification.

Adolescent↗
PubMedDate not supplied

Blood group, red cell, and serum protein variation in the Cabecar and Huetar, two Chibchan Amerindian tribes of Costa Rica.

Genetic variation, using blood groups and red cell and serum proteins, was surveyed in the Cabecar of Chirripo and the Huetar of Quitirrisi, Costa Rica. Thirty-nine loci were screened in a sample of 91 Cabecars and 40 loci in 45 Huetars. Twenty-seven loci were monomorphic in the Cabecar and 30 in the Huetar. The proportions of polymorphic loci (P), out of 34 studied by electrophoresis, were 0.235 and 0.177, respectively. Estimated gene diversities (H) of the polymorphic loci were 0.050 in the Cabecar and 0.053 in the Huetar. Two polymorphisms, reported until now in Costa Rican and Panamanian Chibchan groups only, occurred at very high frequencies: TF*DGUA = 0.357 in the Cabecar, the highest frequency ever reported, and 0.033 in the Huetar; and PEPA*F, which reached 0.26 in the Cabecar and 0.29 in the Huetar. Nei's genetic distances and trees (two methods) were used to compare them to seven other Chibchan tribes of Costa Rica. The results placed both the Cabecar of Chirripo and the Huetar closer to the Talamancan Tribes (Bribri and Cabecar). This was an unexpected result for the Huetar, since linguistic studies suggested a closer relationship to the Guatuso. GST, DST, RST, and Dm for three Cabecar subpopulations (Atlantic, Chirripo, and Pacific) doubled their values compared to estimates based on comparison of only two subpopulations: Atlantic and Pacific. Total genetic diversity considering just the three Cabecar subpopulations resembled that obtained including them plus six other Chibchan populations of Costa Rica.

ABO Blood-Group System↗
PubMedDate not supplied

Effects of depot testosterone administration on serum levels of testosterone, FSH, LH and prolactin.

The effects of the administration of testosterone on plasma testosterone (T), estradiol (E), FSH, LH and prolactin (PRL) were tested in a group of men, aged over sixty. Blood samples were collected on the 2nd, 4th, 7th and 15th day afterr the administration of testosterone propionate (TP) (n = 28 men) and testosterone propionate with testosterone enantate (TP + TE) (n = 21 men). After the administration of TP + TE plasma T increased on days 2-4, returned to the normal basal level on the 7th day, and rose again on the 15th day. With the TP preparation the levels of testosterone remained elevated during the first seven days and returned to the basal values by the 15th day. The FSH and LH were suppressed during the first seven days after the injection of both TP and TP + TE preparations. On the 15th day gonadotropins were suppressed only by the administration of TP. The plasma concentration of E behaved like that of T. We found a significant increase in the PRL levels on the 4th day after treatment with 100 mg of the two preparations. Moreover, we found that PRL basal values were significantly higher in those subjects whose T basal values were low.

Aged↗
PubMedDate not supplied

Cricothyrotomy in the emergency department revisited.

Thirty-nine emergency cricothyrotomies were reviewed from the emergency department of Hennepin County Medical Center during the 4-year period ending December 1985. Due to technical changes in airway management and a desire to assess their impact, this experience was compared with a previously reported series of 38 emergency cricothyrotomies from the same department. Technical changes include the use of paralyzing agents, transtracheal needle ventilation, and the use of only vertical skin incisions and #4 Shiley tubes when cricothyrotomy is performed. The presenting problem, indications for cricothyrotomy and complications of the procedure were compared between the two series. Fewer cricothyrotomies were done as a fraction of total surgical and nonsurgical tracheal intubations in the present series (1.7%) compared to the previous series (2.7%). The complication rate decreased from 40% in the previous series to 23% in the present series. Incorrect site of tube placement (10%) and hemorrhage (8%) remain the two leading complications. However, the tube was in the trachea in all cases, and acceptable ventilation was achieved. No patient developed a clinically significant hematoma or hemorrhage from cricothyrotomy. It is concluded that our technical changes in airway management have helped to decrease both the relative frequency of cricothyrotomy and the complication rate.

Airway Obstruction↗
PubMedDate not supplied

Equipment organization in the emergency department adult resuscitation area.

It is important to design the resuscitation area in the emergency department to avoid restrictions to movement of personnel around the patient and to enable rapid and efficient access to equipment. The delivery of monitors and gases from above will reduce interference to flow by mechanical components. Preassembled airway equipment and the organization of equipment using an intuitive system, such as anatomic arrangement, aids in the rapid location of needed equipment.

Adult↗
PubMedDate not supplied

[Health intervention in an Albanian-Kosovar refugees camp].

This paper focuses on the health intervention developed in a camp of Albanian-Kosovar refugees, displaced as a consequence of the Balcans war in Kosova. Between May and June 1999, the camp of Kavajë in Albania, received 1,700 refugees, with an average age of 24 years old. During this period, 1904 cases were registered at the primary health care centre settled in the camp. The most frequent causes of consultation were respiratory infections (22%), external causes (21%), skin infections and intestinal diseases (12%). A part of the psychological damage, the population attended didn't present with relevant health problems. Most of the visits to the doctor, related to the difficulties suffered on their way to the camp and to the conditions they were living on.

Adolescent↗
PubMedDate not supplied

Mouth-to-mouth ventilation of cardiac arrested humans using a barrier mask.

INTRODUCTION: Concern for possible disease transmission during mouth-to-mouth resuscitation has decreased the incidence of bystander cardiopulmonary resuscitation (CPR). Barrier masks have become available that may be effective in CPR as well as protective against cross-contamination. HYPOTHESIS: A silicone rubber barrier mask incorporating a one-way-valved airway (Kiss of Life [KOL]) designed to prevent contamination of the rescuer, permits satisfactory mouth-to-mouth ventilation of victims of cardiopulmonary arrest. METHODS: Ten adult patients who did not survive non-traumatic cardiac arrest were ventilated with exhaled room air using a KOL barrier mask while external cardiac massage continued. Arterial blood gases were obtained every two minutes for a maximum of 10 minutes. The operator was blinded to the results of these blood tests. RESULTS: Eight men and two women with ages from 55 to 99 years were studied. Four patients were edentulous and two of these had marked mandibular atrophy. The two patients with mandibular atrophy were poorly ventilated with the barrier mask. One other patient was not ventilated successfully. This patient had undergone multiple attempts at endotracheal intubation and had transtracheal needle ventilation performed prior to use of the barrier mask. One patient had elevated PaCO2 despite being well-ventilated clinically. Six patients were ventilated well clinically and had satisfactory PaCO2 and PaO2 values. CONCLUSION: The barrier mask studied appears to be an effective aid to ventilation in CPR. Patients without facial support, as in edentulous patients with mandibular atrophy, are not ventilated well with this device.

Aged↗