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Assef RJ, Eisenhardt PRM, Stern D, Tsai CW, Wu J, Wylezalek D, Blain AW, Bridge CR, Donoso E, Gonzales A, Griffith RL, Jarrett TH. HALF OF THE MOST LUMINOUS QUASARS MAY BE OBSCURED: INVESTIGATING THE NATURE OFWISE-SELECTED HOT DUST-OBSCURED GALAXIES. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/804/1/27] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Villavicencio M, Larrain E, Rivera F, Melo J, Hurtado M, Mena P, Donoso E, Gajardo F. Lung Transplantation in a Developing Country: Experience, Lessons Learned, and Obstacles in 81 Consecutives Cases. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Villavicencio M, Larrain E, Larrea R, Peralta J, Rossel V, Sung J, Rojo P, Hurtado M, Donoso E, Gajardo F. Heart Transplantation With Generic Immunosuppression: A Developing Country Experience. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Villavicencio M, Rossel V, Larrea R, Peralta J, Larrain E, Lim J, Donoso E, Gajardo F, Hurtado M. Medium-Term Circulatory Support for Cardiogenic Shock in a Developing Country: Do We Need a Long-Term Device? J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Villavicencio M, Rossel V, Larrea R, Peralta J, Larrain E, Lim J, Rojo P, Donoso E, Gajardo F, Hurtado M. Thoratec Centrimag VAD for cardiogenic shock – a developing country experience. J Cardiothorac Surg 2013. [PMCID: PMC3844583 DOI: 10.1186/1749-8090-8-s1-o156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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6
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Villavicencio M, Rossel V, Larrea R, Peralta J, Lim J, Rojo P, Larrain E, Donoso E, Gajardo F, Hurtado M. Heart transplantation with generic immunosuppression – a developing country experience. J Cardiothorac Surg 2013. [PMCID: PMC3844460 DOI: 10.1186/1749-8090-8-s1-o157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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7
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Cornejo S, Pokniak J, González E, Donoso E, Robinson DW. Cambios en las concentraciones de DNA, RNA y proteína en hígado y músculos de polios broiler durante su vida productive normal. ACTA ACUST UNITED AC 2010. [DOI: 10.1111/j.1439-0442.1980.tb01874.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Diánez MJ, Criado JM, Blanes JM, Donoso E, Varschavsky A. Study of the mechanism of Cu-Zn mechanical alloying by X-ray powder diffraction. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305086496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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9
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Linossier A, Carvajal P, Donoso E, Orrego M. [Dental fluorosis: quantification of Streptococcus mutans in school children from Mamiña, Chile. A longitudinal study]. Rev Med Chil 1999; 127:1462-8. [PMID: 10835753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
BACKGROUND High fluorine concentrations in drinking water are associated with a decrease in the amount of salivary S mutants. Taking into account that clinical dental fluorosis can appear with 1.5 ppm of fluorine in the drinking water, fluorine concentrations in Mamiña is 2.4 ppm. AIM To quantify salivary S mutans in school age children from Mamiña, a zone with a high fluorine content in the drinking water, during one year. MATERIAL AND METHODS During 1997 and 1998, dental health was assessed and salivary samples were obtained from 51 children (27 male) aged 10 +/- 2 years to quantify S mutans. RESULTS Most children studied had more than 10(5) salivary S mutans colony forming units. No changes in the rates of infection or dental health characteristics were observed during the observation year. CONCLUSIONS High fluorine content in the drinking water did not have an effect on salivary S mutans infection in this population.
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Affiliation(s)
- A Linossier
- Departamento de Patología, Facultad de Odontología, Urgencia Hospital Clínico Universidad de Chile.
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10
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Villagrán E, Linossier A, Donoso E. [Count of salivary Streptococci mutans in pregnant women of the metropolitan region of Chile: cross-sectional study]. Rev Med Chil 1999; 127:165-70. [PMID: 10436696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
BACKGROUND Salivary Streptococci mutans contamination is considered the main microbiological risk factor for the initiation of caries. AIM To assess the oral health of pregnant women, counting Salivary Streptococci mutants. PATIENTS AND METHODS One hundred seventy four pregnant women, in the first, second and third trimester of pregnancy, aged 27 +/- 5 years old, consulting at a public primary health center, were studied. Puerperal women that had their delivery two months before, were studied as a control group. Salivary samples were obtained and Streptococci mutans colonies were counted using quantitative and semiquantitative methods. RESULTS There was a good concordance between both counting methods. No differences in Streptococci mutans counts were observed among the three groups of pregnant women, but the latter as a group had higher counts than puerperal women. Women with more than 5 caries had also higher counts. CONCLUSIONS Semiquantitative Streptococci mutans counts are easy, rapid and non invasive and have a good concordance with quantitative counts in saliva.
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Affiliation(s)
- E Villagrán
- Area de Odontología Socio-Preventiva, Universidad de San Carlos de Guatemala
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11
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Oyarzún E, Gómez R, Rioseco A, González P, Gutiérrez P, Donoso E, Montiel F. Antibiotic treatment in preterm labor and intact membranes: a randomized, double-blinded, placebo-controlled trial. J Matern Fetal Med 1998; 7:105-10. [PMID: 9642605 DOI: 10.1002/(sici)1520-6661(199805/06)7:3<105::aid-mfm1>3.0.co;2-o] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Although an association between microbial invasion of amniotic cavity and preterm birth has been extensively demonstrated, there is conflicting evidence regarding the benefits of antibiotic therapy in patients with preterm labor and intact membranes. We attempted to assess the efficacy of amoxicillin and erythromycin on pregnancy outcome in those patients. A randomized, double-blinded, placebo-controlled trial was designed and implemented. A total of 196 patients with singleton pregnancies and preterm labor with intact membranes (22-36 weeks) were randomly allocated to receive either antibiotics or placebo, plus adjunctive parenteral tocolysis, and 173 patients (antibiotics group n = 83 vs. placebo group n = 90) completed the treatment. The overall prevalence of microbial invasion of the amniotic cavity was 5.2% (9/173). No significant difference between both groups was found in maternal outcomes, including duration of randomization-to-delivery interval, frequency of preterm delivery, and frequency of clinical chorioamnionitis and endometritis. Rate of cesarean section was significantly higher in the placebo group (28% vs. 12%). Regarding neonatal outcome, no significant difference was detected between both groups in neonatal death, respiratory distress syndrome, proven sepsis, and birthweight. Suspected sepsis was significantly more frequent in the placebo group (6/90 vs. 0/78). The results of this trial indicate that amoxicillin and erythromycin do not prolong pregnancy in patients with preterm labor and intact membranes. A significant reduction in the rate of cesarean section was observed in patients receiving antibiotics. A significant reduction in the rate of neonatal suspected sepsis was also demonstrated.
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Affiliation(s)
- E Oyarzún
- Department of Obstetrics and Gynecology, Pontificia Universidad Católica de Chile School of Medicine, Santiago, Chile
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12
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Winter A, Juez G, Lucero E, Donoso E. [Intrauterine growth in full-term twins without risk factors]. Rev Chil Obstet Ginecol 1994; 59:123-127. [PMID: 7659796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Twins are analysed according to the intrauterine growth curve constructed for single fetus. The relationship of twins with length, weight, head circumference and the weight length-index is studied. Twins over 36 weeks gestation age, without maternal or fetal pathologies were selected. It is concluded the twins pregnancy "per se" constitutes on its own, a risk factor regarding the intrauterine growth curve, particularly in relation with the weight curve.
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Affiliation(s)
- A Winter
- Departamento de Pediatría Unidad de Neonatología, Facultad de Medicina, Pontificia Universidad Católica de Chile
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13
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Salas SP, Rosso P, Espinoza R, Robert JA, Valdés G, Donoso E. Maternal plasma volume expansion and hormonal changes in women with idiopathic fetal growth retardation. Obstet Gynecol 1993; 81:1029-33. [PMID: 8497346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
OBJECTIVE To explore the mechanisms underlying the reduced maternal plasma volume associated with idiopathic fetal growth retardation (FGR). METHODS In 30 normotensive women with growth-retarded fetuses and 26 with normal-size fetuses, plasma volume was measured with a modified Evan's blue method. Plasma levels of atrial natriuretic peptide, plasma renin activity, aldosterone, estradiol, and progesterone, and urinary excretion of kallikrein, prostacyclin, and thromboxane A2 were measured at 34-40 weeks' gestation. RESULTS Compared with controls, gravidas with growth-retarded fetuses had a reduced plasma volume expansion (P < .01), similar atrial natriuretic peptide and plasma renin activity levels, and lower serum aldosterone (P < .001) and placental steroids (P < .03). These women also had decreased urinary kallikrein activity and prostaglandin excretion (P < .05). When both groups were combined, maternal plasma volume correlated significantly with birth weight (r = 0.53) and placental weight (r = 0.66). CONCLUSION Normotensive women with idiopathic FGR have reduced plasma volume expansion. Although the exact mechanisms of this change are unknown, we postulate that the lower maternal aldosterone levels and reduced levels of vasodilator substances, such as prostacyclin and kallikrein, may have a causal role.
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Affiliation(s)
- S P Salas
- Center for Medical Research, School of Medicine, Catholic University of Chile, Santiago
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Rosso P, Donoso E, Braun S, Espinoza R, Fernández C, Salas SP. Maternal hemodynamic adjustments in idiopathic fetal growth retardation. Gynecol Obstet Invest 1993; 35:162-5. [PMID: 8505008 DOI: 10.1159/000292690] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The hemodynamic characteristics of 11 normotensive gravidas with idiopathic fetal growth retardation (FGR), were compared with 11 controls of similar age, parity and body size. At weeks 36-38 of gestation, plasma volume was 3,161 +/- 121 ml in controls and 2,624 +/- 95 ml in the FGR group (p < 0.003); cardiac output (CO) was 6,191 +/- 132 ml/min in controls and 5,483 +/- 186 ml/min in the FGR group (p < 0.01). Total peripheral vascular resistance (TPVR) was lower in controls than in FGR (1,031 +/- 33 vs. 1,306 +/- 62 dyn/s/cm5; p < 0.001). Birth weight was correlated with both plasma volume (r = 0.61; p < 0.01) and CO (r = 0.53; p < 0.02) and inversely correlated with TPVR (r = -0.69; p < 0.001). These results are in line with the hypothesis that a reduced plasma volume leads to a lower CO and, secondarily, to reduced uterine blood flow and FGR.
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Affiliation(s)
- P Rosso
- Department of Pediatrics, School of Medicine, Pontificia Universidad Católica de Chile, Santiago
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Rosso P, Donoso E, Braun S, Espinoza R, Salas SP. Hemodynamic changes in underweight pregnant women. Obstet Gynecol 1992; 79:908-12. [PMID: 1579311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Twelve normal-weight and 12 underweight women were compared to test whether fetal growth retardation in underweight gravidas is related to inadequate maternal hemodynamic adjustments. Plasma volume (+/- standard error) was 3227 +/- 103 mL in normal-weight and 2731 +/- 84 mL in underweight women (P less than .002). Cardiac output was 6340 +/- 167 mL/minute in controls and 5689 +/- 213 mL/minute in underweight women (P less than .03). Total peripheral vascular resistance was lower in controls than in underweight subjects (1025 +/- 31 versus 1198 +/- 58 dyne/second/cm5). Mean birth weight was 2837 +/- 125 g in underweight women and 3362 +/- 106 g in controls (P less than .005). Similarly, placental weight was reduced in the underweight group. All infants delivered by control mothers had a normal birth weight, whereas six infants from underweight gravidas were growth-retarded. In all cases combined, maternal plasma volume correlated significantly with both birth weight (r = 0.6, P less than .002) and placental weight (r = 0.56, P less than .01); total peripheral vascular resistance also correlated significantly and inversely with newborn weight and placental weight. Cardiac output correlated only with placental weight (r = 0.54, P less than .02). These results are consistent with the hypothesis that underweight mothers are at higher risk of fetal growth retardation because of a smaller plasma volume and lower cardiac output.
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Affiliation(s)
- P Rosso
- Department of Pediatrics, School of Medicine, Pontificia Universidad Católica de Chile, Santiago
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Orden B, Navarro C, Donoso E, Franco A. [Streptococcus pyogenes not producing beta hemolysis during aerobiosis]. Enferm Infecc Microbiol Clin 1991; 9:516-7. [PMID: 1805963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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17
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Gutiérrez JH, Donoso E, Villena F, Jofré A. Diffusion of medicaments within root canal dentin. A scanning electron microscopic study. Oral Surg Oral Med Oral Pathol 1991; 72:351-8. [PMID: 1923426 DOI: 10.1016/0030-4220(91)90232-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Root canals of 21 maxillary human teeth were enlarged with reamers and flushed alternatively with sodium hypochlorite and hydrogen peroxide. After its mechanical preparation, root canals were dressed with camphorated paramonochloropherol and/or formocresol delivered by paper points. All three medicaments crystallize both on dentin walls and inside dentinal tubules. The clinical implications of these findings are discussed.
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Affiliation(s)
- J H Gutiérrez
- Division of Endodontics, Faculty of Dentistry, University of Concepción, Chile
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18
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Tilton Z, Hodgson MI, Donoso E, Arteaga A, Rosso P. Complications and outcome of pregnancy in obese women. Nutrition 1989; 5:95-9. [PMID: 2520281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
To examine the influence of obesity on obstetric performance, pregnancy outcome, and lactational performance, 163 mostly moderately obese gravidas were compared with age and parity-matched normal weight subjects. Significantly increased incidences of gestational hypertension, inadequate pregnancy weight gain, cesarean section, postpartum infections, and large-for-gestational age infants were observed in the study group. No significant increase in the incidence of diabetes, toxemia, breech presentation, postpartum hemorrhage, infant morbidity or lactational failure was noted in obese women. The mean birth weight of the infants of obese women was 163g greater than that of the control subjects; no difference was observed in infant length or gestational age. These results, while confirming that obesity is an important risk factor, suggest that methodological aspects of the previous studies may have contributed to magnify the severity of the problem.
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Affiliation(s)
- Z Tilton
- Department of Pediatrics, School of Medicine, Pontifical Catholic University of Chile, Santiago
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19
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Guerrero J, Donoso E, Dubournais F. [Purulent meningitis]. Rev Chil Pediatr 1988; 59:170-3. [PMID: 3251312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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Gómez R, Sandoval S, Donoso E. [Evaluation of the precision and accuracy of clinical laboratories in determinations of clinical chemistry]. Rev Med Chil 1986; 114:336-42. [PMID: 3809806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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21
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Vial P, Torres-Pereyra J, Stagno S, González F, Donoso E, Alford CA, Hirsch T, Rodríguez L. [Serological study of cytomegalovirus, herpes simplex and rubella virus, hepatitis B and Toxoplasma gondii in 2 populations of pregnant women in Santiago, Chile]. Bol Oficina Sanit Panam 1985; 99:528-38. [PMID: 3006719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Muñoz A, Lavandero S, Donoso E, Puente J, Sapag-Hagar M. A role for adrenaline and calmodulin in modulating cyclic AMP levels during the lactogenic cycle. FEBS Lett 1985; 187:173-6. [PMID: 2991006 DOI: 10.1016/0014-5793(85)81236-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The effect on lactose production of several external modulators of intracellular cyclic AMP was studied in rat mammary gland tissue slices and explants. Adrenaline, a beta-adrenergic receptor effector, forskolin, a direct adenylate cyclase activator and fluphenazine, a calmodulin inhibitor, all produced an increase in the intracellular level of cyclic AMP and a concomitant inhibition of lactose production. These results suggest a role for adrenaline and calmodulin in modulating cyclic AMP levels in mammary tissue during the lactogenic cycle.
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Sapag-Hagar M, Puente J, Muñoz A, Piedad Valdivieso M, Diaz S, Donoso E, Pizarro M. [Hormonal action and second messengers in lactogenesis]. Rev Med Chil 1984; 112:171-7. [PMID: 6330832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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25
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Herskovic P, Toso A, Beca JP, Donoso E. [Etiology of neonatal bacterial infections]. Rev Chil Pediatr 1979; 50:42-6. [PMID: 395579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Abstract
The syndrome of mitral valve prolapse with associated auscultatory-electrocardiographic findings is now well documented. Two representative cases of repetitive tachyarrhythmias in patients with mitral valve prolapse are discussed as well as an analysis of the 589 cases in the English literature of arrhythmias in patients with mitral valve prolapse. The average age of the patients was 38 years; 70 per cent of them were women. Symptoms were variable, but palpitations occurred in 44 per cent, lightheadedness in 12 per cent and syncope in 4 per cent. Premature atrial and/or ventricular contractions were found in 55 per cent, premature ventricular contractions in 45 per cent, supraventricular tachycardia in 6.1 per cent and ventricular tachycardia in 6.3 per cent. Sudden death was noted in 1.4 per cent. A discussion of the pathogenesis of arrhythmias and therapy concludes this review.
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Beca JP, Filippa R, Donoso E. [Bacterial infection in the low birth weight infant: bacterial colonization, personnel and environmental]. Rev Chil Pediatr 1977; 48:34-40. [PMID: 616934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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28
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Prado V, Banfi A, Donoso E, Inostroza B. [The effect of cotrimexazole on enteral infections due to Salmonellae in infants (author's transl)]. Rev Med Chil 1976; 104:812-4. [PMID: 1021843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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29
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Abstract
Holter electrocardiographic monitoring in 55 symptomatic patients with syncope, palpitations or dizziness uncovered significant arrhythmias in 30 patients (55 percent). By providing an observation period of at least 24 hours including a period of sleep, the procedure aided detection and diagnosis in both symptomatic and asymptomatic patients of transient arrhythmias or conduction abnormalities not documented by routine electrocardiograms. Bradyarrhythmias accounted for the majority of arrhythmias recorded in 21 or 30 symptomatic patients (70 percent); 15 had sinus bradycardia (35 to 55 beats/min) alone and 6 also had long episodes of sinus arrest of up to 5 seconds. Two had sinus bradycardia with periods of atrioventricular block with Wenckebach phenomenon. Five patients had a tachycardia-bradycardia syndrome; three had other episodic arrhythmias and one had pacemaker failure. In 15 (60 percent) of the 25 patients without arrhythmias, monitoring did not document the cause of symptoms. Holter monitoring is of considerable value in assessing the efficacy and adequacy of drug treatment, especially in patients with known heart disease, and in detecting pacemaker malfunction. However, very long periods of monitoring may be needed to make a diagnosis in those with only sporadic symptoms.
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Abstract
Sixty-one patients were selected from 100 consecutive patients under-going aortocoronary artery bypass. The number of vessels diseased as defined by coronary arteriography and the number of bypass grafts were recorded. Review of the preoperative electrocardiograms showed an infarct pattern in 26 of the 61 patients and analysis of the postoperative electrocardiograms revealed loss of abnormal Q waves in 3 of the 26. The pre- and postoperative clinical course of these three patients is analyzed and the extent of their coronary artery disease and number of bypass grafts compared with those of the 23 patients who had persistence of the infarction pattern and the 17 patients who manifested new Q waves. Possible explanations for the disappearance of abnormal Q waves are discussed.
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Conde CA, Meller J, Pantazopoulos H, Donoso E, Dack S. Reticulum-cell sarcoma with intracardiac metastases. Case with angiocardiographic improvement after chemotherapy. Am J Cardiol 1975; 36:357-62. [PMID: 52297 DOI: 10.1016/0002-9149(75)90490-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Abstract
A case is presented of bacterial endocarditis with a ruptured sinus of Valsalva and formation of an aorticocardiac fistula from the right coronary sinus into the right atrium and right ventricle. The pathologic, clinical and surgical aspects of bacterial endocarditis complicated by a ruptured sinus of Valsalva and an aorticocardiac fistula are analyzed. This complication of bacterial endocarditis is still uncommon, but alertness to its diagnosis makes possible early and successful surgical treatment.
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Abstract
Transient abnormal Q waves were seen in two patients with Prinzmetal's angina during episodes of chest pain. The Q waves appeared recurrently while the patients had chest pain and disappeared when it subsided, indicating that Q waves suggestive of myocardial infarction can be seen with severe myocardial ischemia without actual necrosis. We describe these two patients, the various conditions in which transient abnormal Q waves have been reported and the theories offered to explain this electrophysiologic finding.
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Meller J, Conde CA, Deppisch LM, Donoso E, Dack S. Myocardial infarction due to coronary atherosclerosis in three young adults with systemic lupus erythematosus. Am J Cardiol 1975; 35:309-14. [PMID: 1119392 DOI: 10.1016/0002-9149(75)90019-3] [Citation(s) in RCA: 83] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Three patients, 24, 24 and 25 years of age, with systemic lupus erythematosus had signs of myocardial infarction. Two had serial electrocardiographic changes indicative of infarction without any cardiac symptoms. The third patient had clinical evidence of an acute massive myocardial infarction, which was proved at autopsy to be due to coronary atherosclerosis. This case is presented in detail and the association between systemic lupus erythematosus and myocardial infarction is reviewed. It is postulated that the relation between lupus erythematosus and coronary atherosclerosis is more than coincidental.
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35
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Prado V, Banfi A, Donoso E, Ramírez B. [Clinico-bacteriological evaluation of the use of Cotrimexazole in the treatment of shigellosis in newborn infants]. Rev Chil Pediatr 1975; 46:25-9. [PMID: 1178946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Lynch B, Valenzuela MC, Donoso E, Cofre J, Vilches A, Aguero ME. [Sensitivity of enterobacteriaceae to sulfamethoxazole (SMZ), trimethoprim (TMP) and cotrimexazole (SMZ plus TMP)]. Rev Chil Pediatr 1975; 46:17-9. [PMID: 1178944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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37
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Ledermann GW, Donoso E, Cordova M. [Septicemia caused by Salmonella bareilly]. Rev Chil Pediatr 1975; 46:9-12. [PMID: 1178954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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38
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Banfi A, Roizen J, Lynch MB, Amenabar E, Donoso E, Inostroza B. [Use of cotrimexazole in the treatment of septicemia caused by Salmonella]. Rev Chil Pediatr 1975; 46:21-3. [PMID: 1178945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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41
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Friedman HS, Lipski J, Pantazopoulos J, Genkins G, Donoso E. Bundle of His electrograms in congenital corrected transposition of the great arteries. A study of two adult cases. Br Heart J 1973; 35:1307-14. [PMID: 4759929 PMCID: PMC458799 DOI: 10.1136/hrt.35.12.1307] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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46
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Stimmel B, Katz AM, Donoso E. Q-wave development in acute subendocardial infarction. Arch Intern Med 1973; 131:676-8. [PMID: 4701377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Stimmel B, Stein E, Katz AM, Litwak RS, Donoso E. Phonocardiographic manifestations of heterograft valve dysfunction in the mitral area. Br Heart J 1972; 34:936-41. [PMID: 4672680 PMCID: PMC487025 DOI: 10.1136/hrt.34.9.936] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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50
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