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1.
Emergencias (St. Vicenç dels Horts) ; 28(5): 327-332, oct. 2016. tab
Article in Spanish | IBECS | ID: ibc-156729

ABSTRACT

Objetivo: Estudiar la presencia de un patrón de variabilidad circadiana en la efectividad del tratamiento con angioplastia coronaria transluminal percutánea (ACTPp) del infarto agudo de miocardio con elevación del segmento ST (IAMCEST), así como su relación con la extensión del infarto y la presencia de complicaciones intrahospitalarias. Método: Estudio observacional de cohortes retrospectivo que incluyó a pacientes con IAMCEST tratados con ACTPp en un hospital terciario universitario entre marzo 2003 y agosto 2009. La variable de estudio fue la hora de inicio de los síntomas del IAMCEST, agrupando en periodos de riesgo cronobiológico de 6 horas. La variable de resultado principal fue la efectividad de ACTPp. Las variables de resultado secundarias fueron la extensión del infarto y la presencia de complicaciones intrahospitalarias. Resultados: Se incluyeron 522 pacientes con una edad media de 62,3 (DE 13,6) años, de los cuales 404 (77,4%) fueron hombres. La franja horaria entre las 6-12 h fue la que presentó una mayor frecuencia de IAMCEST tratado con ACTPp (201 casos, 38,5%) (p < 0,001). Del total, 122 casos (23,4%) mostraron una ACTPp no efectiva. La franja horaria de 6-12 h fue un factor independiente de ACTPp no efectiva (OR 1,79; IC95% 1,09-2,94; p = 0,012). Además, se asoció con la extensión del infarto, aunque no con la presencia de complicaciones durante el ingreso hospitalario. Conclusiones: La hora de inicio de infarto de miocardio, en la franja de 6-12 h, es un predictor independiente de ACTPp no efectiva y de una mayor extensión del infarto, pero no de complicaciones intrahospitalarias (AU)


Objectives: To explore circadian variation in the effectiveness of percutaneous transluminal coronary angioplasty (PTCA) to treat ST-elevation myocardial infarction (STEMI) To explore the effects of circardian variation on infarct extension and in-hospital complications. Methods: Observational retrospective cohort study including patients with PTCA-treated STEMI in a tertiary care university hospital between March 2003 and August 2009. The independent variable of interest was the time of onset of STEMI symptoms, grouped in 6-hour time frames. The main outcome variable was PTCA effectiveness. Secondary outcome variables were infarct extension and the presence of in-hospital complications. Results: A total of 522 patients records were studied. The mean (SD) age was 62.3 (13.6) years and 404 (77.4%) were men. The largest proportion of PTCA-treated STEMI cases first experienced symptoms between 6 AM and 12 PM (201 cases, 38.5%) (P<.001). PTCA was ineffective in 122 (23.4%). The 6 AM to 12 PM time frame was an independent predictor of PTCA ineffectiveness (odds ratio, 1.79; 95% CI, 1.09–2.94; P=.012). Onset in this interval was also associated with infarct extension but not with in-hospital complications. Conclusions: A time of onset of STEMI between 6 AM and 12 PM predicts the ineffectiveness of PTCA and greater infarct extension but not in-hospital complications (AU)


Subject(s)
Humans , Myocardial Reperfusion/methods , Myocardial Infarction/epidemiology , Angioplasty, Balloon, Coronary/methods , Circadian Rhythm/physiology , Effectiveness , 25631/statistics & numerical data
2.
Emergencias ; 28(5): 327-332, 2016 10.
Article in Spanish | MEDLINE | ID: mdl-29106103

ABSTRACT

OBJECTIVES: To explore circadian variation in the effectiveness of percutaneous transluminal coronary angioplasty (PTCA) to treat ST-elevation myocardial infarction (STEMI) To explore the effects of circardian variation on infarct extension and in-hospital complications. MATERIAL AND METHODS: Observational retrospective cohort study including patients with PTCA-treated STEMI in a tertiary care university hospital between March 2003 and August 2009. The independent variable of interest was the time of onset of STEMI symptoms, grouped in 6-hour time frames. The main outcome variable was PTCA effectiveness. Secondary outcome variables were infarct extension and the presence of in-hospital complications. RESULTS: A total of 522 patients records were studied. The mean (SD) age was 62.3 (13.6) years and 404 (77.4%) were men. The largest proportion of PTCA-treated STEMI cases first experienced symptoms between 6 AM and 12 PM (201 cases, 38.5%) (P<.001). PTCA was ineffective in 122 (23.4%). The 6 AM to 12 PM time frame was an independent predictor of PTCA ineffectiveness (odds ratio, 1.79; 95% CI, 1.09-2.94; P=.012). Onset in this interval was also associated with infarct extension but not with in-hospital complications. CONCLUSION: A time of onset of STEMI between 6 AM and 12 PM predicts the ineffectiveness of PTCA and greater infarct extension but not in-hospital complications.


OBJETIVO: Estudiar la presencia de un patrón de variabilidad circadiana en la efectividad del tratamiento con angioplastia coronaria transluminal percutánea (ACTPp) del infarto agudo de miocardio con elevación del segmento ST (IAMCEST), así como su relación con la extensión del infarto y la presencia de complicaciones intrahospitalarias. METODO: Estudio observacional de cohortes retrospectivo que incluyó a pacientes con IAMCEST tratados con ACTPp en un hospital terciario universitario entre marzo 2003 y agosto 2009. La variable de estudio fue la hora de inicio de los síntomas del IAMCEST, agrupando en periodos de riesgo cronobiológico de 6 horas. La variable de resultado principal fue la efectividad de ACTPp. Las variables de resultado secundarias fueron la extensión del infarto y la presencia de complicaciones intrahospitalarias. RESULTADOS: Se incluyeron 522 pacientes con una edad media de 62,3 (DE 13,6) años, de los cuales 404 (77,4%) fueron hombres. La franja horaria entre las 6-12 h fue la que presentó una mayor frecuencia de IAMCEST tratado con ACTPp (201 casos, 38,5%) (p < 0,001). Del total, 122 casos (23,4%) mostraron una ACTPp no efectiva. La franja horaria de 6-12 h fue un factor independiente de ACTPp no efectiva (OR 1,79; IC95% 1,09-2,94; p = 0,012). Además, se asoció con la extensión del infarto, aunque no con la presencia de complicaciones durante el ingreso hospitalario. CONCLUSIONES: La hora de inicio de infarto de miocardio, en la franja de 6-12 h, es un predictor independiente de ACTPp no efectiva y de una mayor extensión del infarto, pero no de complicaciones intrahospitalarias.


Subject(s)
Angioplasty, Balloon, Coronary , Circadian Rhythm , ST Elevation Myocardial Infarction/therapy , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Prognosis , Retrospective Studies , ST Elevation Myocardial Infarction/complications , ST Elevation Myocardial Infarction/diagnosis , Time Factors , Treatment Outcome
3.
Med. clín (Ed. impr.) ; 139(12): 515-521, nov. 2012. tab, graf
Article in Spanish | IBECS | ID: ibc-109592

ABSTRACT

Fundamento y objetivo. El objetivo de este estudio es analizar la presencia de ritmo circadiano en la hora de inicio del infarto agudo de miocardio atendido por un sistema de emergencias prehospitalario, y la influencia en dicho ritmo de algunos factores de riesgo cardiovascular modificables y no modificables como posibles moduladores de ese patrón circadiano. Pacientes y método. Análisis retrospectivo de 709 pacientes con diagnóstico clínico confirmado in situ de infarto agudo de miocardio. Se analizan las variables: hora de inicio de los síntomas, edad, sexo, cardiopatía isquémica previa, hipertensión arterial, diabetes mellitus, dislipidemia y tabaquismo. El análisis de ritmo se ha efectuado utilizando un test simple de igualdad de series basado en el análisis cosinor de múltiples sinusoides, eligiendo 3 armónicos (24,12 y 8h) para su ajuste. Resultados. La hora de inicio del infarto muestra ritmo circadiano (p<0,001), con un pico máximo a las 10.39 y un valle a las 4.28, mostrando una curva sinusoidal ajustada de aspecto bimodal, con un pico matinal predominante y otro vespertino de menor amplitud. Todos los subgrupos categorizados por la presencia de las variables analizadas presentaron ritmo circadiano, con una curva sinusoidal similar a la de la población global. Los pacientes fumadores muestran un pico vespertino predominante. Conclusiones. El infarto de miocardio presenta ritmo circadiano. El tabaquismo y la diabetes modifican el patrón de ritmo circadiano habitual del infarto(AU)


Background and objectives. The aim of this study is to analyze the presence of circadian rhythm in the time of onset of symptoms of acute myocardial infarction treated by a prehospital emergency system and the influence of modifiable cardiovascular risk factors and non-modifiable as modulators of that circadian rhythm. Patients and methods. Retrospective analysis of 709 patients clinically diagnosed with acute myocardial infarction on-site in the prehospital setting. The variables were time to onset of symptoms, age, sex, previous ischemic heart disease, hypertension, diabetes mellitus, hyperlipidemia and smoking. We analyzed the rhythm with cosinor multiple sinusoid method, with 3 harmonics (24, 12 and 8h) for the adjustment. Results. The time of onset of pain showed circadian rhythm (P <,001), peaking at 10.39 and a valley at 4.28, showing a sinusoidal curve fitting bimodal aspect with a predominant morning peak and another evening one of lower amplitude. All subgroups categorized by the study variables showed circadian rhythm, with a cosine curve similar to the global infarction. Smokers had a predominantly evening peak. Conclusions. Acute myocardial infarction shows a circadian rhythm. Smoking and diabetes mellitus can modify the standard incidence rate of occurrence of myocardial infarction(AU)


Subject(s)
Humans , Chronobiology Disorders/physiopathology , Myocardial Infarction/physiopathology , Prehospital Care , Risk Factors , Smoking/adverse effects , Diabetes Mellitus/physiopathology , Retrospective Studies
4.
Med Clin (Barc) ; 139(12): 515-21, 2012 Nov 17.
Article in Spanish | MEDLINE | ID: mdl-22206796

ABSTRACT

BACKGROUND AND OBJECTIVES: The aim of this study is to analyze the presence of circadian rhythm in the time of onset of symptoms of acute myocardial infarction treated by a prehospital emergency system and the influence of modifiable cardiovascular risk factors and non-modifiable as modulators of that circadian rhythm. PATIENTS AND METHODS: Retrospective analysis of 709 patients clinically diagnosed with acute myocardial infarction on-site in the prehospital setting. The variables were time to onset of symptoms, age, sex, previous ischemic heart disease, hypertension, diabetes mellitus, hyperlipidemia and smoking. We analyzed the rhythm with cosinor multiple sinusoid method, with 3 harmonics (24, 12 and 8h) for the adjustment. RESULTS: The time of onset of pain showed circadian rhythm (P <,001), peaking at 10.39 and a valley at 4.28, showing a sinusoidal curve fitting bimodal aspect with a predominant morning peak and another evening one of lower amplitude. All subgroups categorized by the study variables showed circadian rhythm, with a cosine curve similar to the global infarction. Smokers had a predominantly evening peak. CONCLUSIONS: Acute myocardial infarction shows a circadian rhythm. Smoking and diabetes mellitus can modify the standard incidence rate of occurrence of myocardial infarction.


Subject(s)
Circadian Rhythm , Emergencies , Emergency Medical Services/statistics & numerical data , Myocardial Infarction/physiopathology , Adult , Aged , Aged, 80 and over , Autonomic Nervous System/physiopathology , Catecholamines/metabolism , Comorbidity , Diabetes Mellitus/epidemiology , Diabetes Mellitus/physiopathology , Female , Humans , Hyperlipidemias/epidemiology , Hypertension/epidemiology , Hypertension/physiopathology , Male , Middle Aged , Myocardial Infarction/epidemiology , Myocardial Ischemia/epidemiology , Retrospective Studies , Risk Factors , Secretory Rate , Smoking/epidemiology , Smoking/physiopathology , Spain/epidemiology
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