Objective. To report the results of ventricular tachycardia (VT) catheter ablation in ischemic heart disease (IHD), and to identify risk factors associated with recurrence in a Mexican center. Materials and methods. We made a retrospective review of the cases of VT ablation performed in our center from 2015 to 2022. We analyzed the characteristics of the patients and those of the procedures separately and we determined factors associated with recurrence. Results. Fifty procedures were performed in 38 patients (84% male; mean age 58.1 years). Acute success rate was 82%, with a 28% of recurrences. Female sex (OR 3.33, IC 95% 1.66–6.68, p=0.006), atrial fibrillation (OR 3.5, IC 95% 2.08–5.9, p=0.012), electrical storm (OR 2.4, IC 95% 1.06–5.41, p=0.045), functional class greater than II (OR 2.86, IC 95% 1.34–6.10, p=0.018) were risk factors for recurrence and the presence of clinica...

Left bundle branch stimulation is a second-line strategy in patients where His bundle stimulation is not optimal. Currently, no cases of left bundle branch stimulation have been reported in patients with diffuse electrical cardiac disease or in the pediatric population.

Objective. To report the results of ventricular tachycardia (VT) catheter ablation in ischemic heart disease (IHD), and to identify risk factors associated with recurrence in a Mexican center. Materials and methods. We made a retrospective review of the cases of VT ablation performed in our center from 2015 to 2022. We analyzed the characteristics of the patients and those of the procedures separately and we determined factors associated with recurrence. Results. Fifty procedures were performed in 38 patients (84% male; mean age 58.1 years). Acute success rate was 82%, with a 28% of recurrences. Female sex (OR 3.33, IC 95% 1.66–6.68, p=0.006), atrial fibrillation (OR 3.5, IC 95% 2.08–5.9, p=0.012), electrical storm (OR 2.4, IC 95% 1.06–5.41, p=0.045), functional class greater than II (OR 2.86, IC 95% 1.34–6.10, p=0.018) were risk factors for recurrence and the presence of clinica...

Left bundle branch stimulation is a second-line strategy in patients where His bundle stimulation is not optimal. Currently, no cases of left bundle branch stimulation have been reported in patients with diffuse electrical cardiac disease or in the pediatric population.

Wolff Parkinson White Syndrome occurs due to the presence of accessory pathways that abnormally communicate the atria with the ventricles. It is one of the main causes of paroxysmal supraventricular tachycardia in young people and adolescents, in whom the ideal management is catheter ablation. This syndrome can also occur in younger patients such as neonates and infants, where the therapeutic options are different. We present the case of a 47-day-old patient who was admitted to a public pediatric hospital in Peru due to vomiting. Upon admission, she showed a heart rate of 250 beats per minute; wide QRS complex tachycardia was documented; later, on the electrocardiogram in sinus rhythm, signs of pre-excitation were evident.

Accelerated idioventricular rhythm has traditionally been recognized as a benign arrhythmia. In the context of an acute myocardial infarction is a marker of successful reperfusion, however the evidence is controversial. Usually, this arrhythmia is transitory and does not cause hemodynamic compromise, however its presence may have prognostic value and not necessarily be a benign marker. The recognition of this arrhythmia is always important as well as its documentation on a 12-lead electrocardiogram. We present the case of an adult male patient with inferior ST-segment elevation myocardial infarction, who presented accelerated idioventricular rhythm without reperfusion therapy.

OBJETIVO: Describir las características clínicas, epidemiológicas y etiológicas de los pacientes con infecciones intrahospitalarias (IIH) por Pseudomona aeruginosa en el Hospitallll José Cayetano Heredia en el año 2014. MATERIALES Y MÉTODOS: Se realizó un estudio descriptivo de tipo transversal y retrospectivo. En el laboratorio de Microbiología se obtuvieron los números de historias clínicas de Jos pacientes con cultivos positivos para P. aeruginosa y además se recopiló la información correspondiente al perfil microbiológico de las bacterias. Se procedió a revisar las historias clínicas correspondientes, se llenó una ficha de recolección de datos por historia. Dicha ficha estuvo validada por un experto. RESULTADOS: Durante el año 2014 se encontraron 69 aislamientos positivos para P. aeruginosa, los cuales pertenecieron a 58 pacientes. De estos últimos, sólo 50 cump...

Wolff Parkinson White Syndrome occurs due to the presence of accessory pathways that abnormally communicate the atria with the ventricles. It is one of the main causes of paroxysmal supraventricular tachycardia in young people and adolescents, in whom the ideal management is catheter ablation. This syndrome can also occur in younger patients such as neonates and infants, where the therapeutic options are different. We present the case of a 47-day-old patient who was admitted to a public pediatric hospital in Peru due to vomiting. Upon admission, she showed a heart rate of 250 beats per minute; wide QRS complex tachycardia was documented; later, on the electrocardiogram in sinus rhythm, signs of pre-excitation were evident.

Accelerated idioventricular rhythm has traditionally been recognized as a benign arrhythmia. In the context of an acute myocardial infarction is a marker of successful reperfusion, however the evidence is controversial. Usually, this arrhythmia is transitory and does not cause hemodynamic compromise, however its presence may have prognostic value and not necessarily be a benign marker. The recognition of this arrhythmia is always important as well as its documentation on a 12-lead electrocardiogram. We present the case of an adult male patient with inferior ST-segment elevation myocardial infarction, who presented accelerated idioventricular rhythm without reperfusion therapy.

The tachycardia-bradycardia syndrome is the most frequent form of presentation of Sick sinus node syndrome and is commonly characterized by episodes of paroxysmal atrial fibrillation followed by significant pauses, especially in older adult patients. Other frequently associated tachyarrhythmias are atrial tachycardia and atrial flutter. The association between orthodromic tachycardia and significant pauses in these patients is an unusual presentation. We present the case of an older adult with bradycardia-tachycardia syndrome and syncope, who presented with a hidden accessory pathway and who, after successful ablation of it, did not present syncope again.

El síndrome taquicardia-bradicardia es la forma de presentación más frecuente del síndrome del nodo sinusal enfermo, y comúnmente se caracteriza por episodios de fibrilación auricular paroxística seguidos de pausas significativas, sobre todo en pacientes adultos mayores; otras taquiarritmias frecuentemente asociadas son la taquicardia auricular y el flutter auricular. La asociación entre una taquicardia ortodrómica y pausas significativas en estos pacientes es una presentación poco habitual. Presentamos el caso de un adulto mayor con síndrome taquicardia-bradicardia asociado a síncope, que presentaba episodios de taquicardia incesante por vía accesoria oculta y que luego de la ablación exitosa de la misma, no volvió a presentar síncope.

El síndrome taquicardia-bradicardia es la forma de presentación más frecuente del síndrome del nodo sinusal enfermo, y comúnmente se caracteriza por episodios de fibrilación auricular paroxística seguidos de pausas significativas, sobre todo en pacientes adultos mayores; otras taquiarritmias frecuentemente asociadas son la taquicardia auricular y el flutter auricular. La asociación entre una taquicardia ortodrómica y pausas significativas en estos pacientes es una presentación poco habitual. Presentamos el caso de un adulto mayor con síndrome taquicardia-bradicardia asociado a síncope, que presentaba episodios de taquicardia incesante por vía accesoria oculta y que luego de la ablación exitosa de la misma, no volvió a presentar síncope.

Background. The Global Registry of Acute Coronary Events (GRACE) prediction model stratifies patients with non-ST-segment elevation myocardial infarction (NSTEMI). Corrected QT interval (QTc) is not considered in this model. Objective. To evaluate the relationship between the QTc interval and the GRACE score in patients with NSTEMI. Materials and methods. An observational, retrospective study was carried between 2016 and 2019. We included patients with diagnosis of NSTEMI, QTc intervals were calculated with Bazett’s formula, and they were classified into 2 groups: a normal QTc interval (<440 ms) and prolonged (≥440 ms). According to the GRACE score they were classified in three ranges: low risk (≤109 points), intermedium (110 - 139 points) and high (≥140 points), we determined if there were a correlation between QTc interval and the GRACE score. Results. A total of 940 patient...

Background. The Global Registry of Acute Coronary Events (GRACE) prediction model stratifies patients with non-ST-segment elevation myocardial infarction (NSTEMI). Corrected QT interval (QTc) is not considered in this model. Objective. To evaluate the relationship between the QTc interval and the GRACE score in patients with NSTEMI. Materials and methods. An observational, retrospective study was carried between 2016 and 2019. We included patients with diagnosis of NSTEMI, QTc intervals were calculated with Bazett’s formula, and they were classified into 2 groups: a normal QTc interval (<440 ms) and prolonged (≥440 ms). According to the GRACE score they were classified in three ranges: low risk (≤109 points), intermedium (110 - 139 points) and high (≥140 points), we determined if there were a correlation between QTc interval and the GRACE score. Results. A total of 940 patient...