Ildefonso Mas - Academia.edu (original) (raw)
Papers by Ildefonso Mas
Journal of the American College of Cardiology, Apr 1, 2024
Texas Heart Institute Journal, 1988
Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachyc... more Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachycardia. Electrocardiograms obtained during sinus rhythm rarely serve to identify the mechanism of paroxysmal supraventricular tachycardia. We report two cases of dual atrioventricular nodal reentry in which electrocardiograms recorded during sinus rhythm disclosed two separate PR intervals that suggested dual atrioventricular nodal pathways.
Texas Heart Institute Journal, Dec 1, 1987
The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent ... more The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent sustained ventricular tachycardia (VT) who were treated with amiodarone as the sole antiarrhythmic agent. At control PVS, sustained VT was induced in 11 patients and nonsustained VT was induced in one patient, as compared with late PVS (mean, 8.6 weeks) when sustained VT was induced in six patients and nonsustained VT was induced in five. Amiodarone significantly prolonged the patients' RR, PR, QRS, and QTc intervals, VT cycle length, and right ventricular effective refractory period. During a mean follow-up of 16+13.6 months, two patients had recurrent clinical VT. In the patients in whom amiodarone therapy failed (1) sustained VT was induced during late PVS, (2) VT cycle length and symptoms during late PVS and during recurrent clinical VT were similar, and (3) the QTc failed to be prolonged significantly (32.5 + 1.6 ms in amiodarone failure vs. 84.1 + 27.1 ms in amiodarone success, P<0.05). It is concluded that (1) amiodarone in high-risk patients is clinically effective (88.3%), (2) patients with noninducible VT or nonsustained VT during late PVS did not have recurrent clinical VT, (3) late PVS isprobably predictive of electrophysiologic and hemodynamic consequences in patients with recurrent spontaneous VT, and (4) failure of the QTc interval to be prolonged substantially is probably predictive of clinical recurrence of VT.
Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital, 1988
Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachyc... more Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachycardia. Electrocardiograms obtained during sinus rhythm rarely serve to identify the mechanism of paroxysmal supraventricular tachycardia. We report two cases of dual atrioventricular nodal reentry in which electrocardiograms recorded during sinus rhythm disclosed two separate PR intervals that suggested dual atrioventricular nodal pathways.
The Journal of invasive cardiology, 2014
Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable sa... more Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable safety, could result in greater patient satisfaction and potential cost savings. Comparative analyses reporting the safety outcomes of same-day discharge vs overnight stay after elective PCI are lacking. Data of same-day discharge and overnight-stay patients undergoing elective PCI in a high-volume center were compared. We specifically evaluated the incidence of net adverse cardiovascular events (NACE; i.e., death, myocardial infarction, stroke, target vessel revascularization, vascular complication, and major bleeding) within 48 hours post index procedure among both groups and at 30 days. A total of 188 cases were evaluated, with 93 discharged the same day and 95 after overnight stay following elective PCI. Baseline characteristics were similar, except for older age (73.0 ± 7 years vs. 64.0 ± 12 years; P<.001), more prior PCI (49.5% vs. 34.7%; P<.001), and prior coronary artery bypa...
American Journal of Cardiology, Apr 1, 1985
Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myo... more Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myocardial infarction (AMI). We found published reports describing 5 patients with AMI who by angiography during the first day of presentation had total occlusion of the LM coronary artery. 1–3 . All 5, each of whom had presented with cardiogenic shock, had early intracoronary thrombolytic therapy with opening of the lumen of the LM coronary artery and all survived. Additionally, another reported patient with AMI had total occlusion of the LM coronary artery by angiogram at day 15—but no coronary angiogram or thrombolytic therapy earlier—and this patient was alive 1 year later. 4 The present report was prompted by study at necropsy of a patient who survived 54 hours after onset of AMI and who had total occlusion of the LM coronary artery by clot superimposed on atherosclerotic plaque.
The American Journal of Cardiology, 1985
Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myo... more Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myocardial infarction (AMI). We found published reports describing 5 patients with AMI who by angiography during the first day of presentation had total occlusion of the LM coronary artery. 1–3 . All 5, each of whom had presented with cardiogenic shock, had early intracoronary thrombolytic therapy with opening of the lumen of the LM coronary artery and all survived. Additionally, another reported patient with AMI had total occlusion of the LM coronary artery by angiogram at day 15—but no coronary angiogram or thrombolytic therapy earlier—and this patient was alive 1 year later. 4 The present report was prompted by study at necropsy of a patient who survived 54 hours after onset of AMI and who had total occlusion of the LM coronary artery by clot superimposed on atherosclerotic plaque.
Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital, 1987
The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent ... more The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent sustained ventricular tachycardia (VT) who were treated with amiodarone as the sole antiarrhythmic agent. At control PVS, sustained VT was induced in 11 patients and nonsustained VT was induced in one patient, as compared with late PVS (mean, 8.6 weeks) when sustained VT was induced in six patients and nonsustained VT was induced in five. Amiodarone significantly prolonged the patients' RR, PR, QRS, and QTc intervals, VT cycle length, and right ventricular effective refractory period. During a mean follow-up of 16 +/- 13.6 months, two patients had recurrent clinical VT. In the patients in whom amiodarone therapy failed (1) sustained VT was induced during late PVS, (2) VT cycle length and symptoms during late PVS and during recurrent clinical VT were similar, and (3) the QTc failed to be prolonged significantly (32.5 +/- 1.6 ms in amiodarone failure vs. 84.1 +/- 27.1 ms in amiodarone ...
The Journal of Invasive Cardiology, May 1, 2014
Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable sa... more Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable safety, could result in greater patient satisfaction and potential cost savings. Comparative analyses reporting the safety outcomes of same-day discharge vs overnight stay after elective PCI are lacking. Data of same-day discharge and overnight-stay patients undergoing elective PCI in a high-volume center were compared. We specifically evaluated the incidence of net adverse cardiovascular events (NACE; i.e., death, myocardial infarction, stroke, target vessel revascularization, vascular complication, and major bleeding) within 48 hours post index procedure among both groups and at 30 days. A total of 188 cases were evaluated, with 93 discharged the same day and 95 after overnight stay following elective PCI. Baseline characteristics were similar, except for older age (73.0 ± 7 years vs. 64.0 ± 12 years; P&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;.001), more prior PCI (49.5% vs. 34.7%; P&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;.001), and prior coronary artery bypass graft surgery (16.1% vs. 11.6%; P=.01) in the same-day discharge group. Procedural characteristics were similar in both groups. No significant difference in the NACE rate was found between the groups at 48 hours (0 [0%] vs. 2 [2.1%]; P=.25) or at 30 days (3 [3.2%] vs. 6 [6.3%]; P=.26). In the population studied, same-day discharge after PCI is safe and feasible. Adequately powered randomized prospective studies are necessary to confirm these results.
Journal of the American College of Cardiology, Apr 1, 2024
Texas Heart Institute Journal, 1988
Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachyc... more Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachycardia. Electrocardiograms obtained during sinus rhythm rarely serve to identify the mechanism of paroxysmal supraventricular tachycardia. We report two cases of dual atrioventricular nodal reentry in which electrocardiograms recorded during sinus rhythm disclosed two separate PR intervals that suggested dual atrioventricular nodal pathways.
Texas Heart Institute Journal, Dec 1, 1987
The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent ... more The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent sustained ventricular tachycardia (VT) who were treated with amiodarone as the sole antiarrhythmic agent. At control PVS, sustained VT was induced in 11 patients and nonsustained VT was induced in one patient, as compared with late PVS (mean, 8.6 weeks) when sustained VT was induced in six patients and nonsustained VT was induced in five. Amiodarone significantly prolonged the patients' RR, PR, QRS, and QTc intervals, VT cycle length, and right ventricular effective refractory period. During a mean follow-up of 16+13.6 months, two patients had recurrent clinical VT. In the patients in whom amiodarone therapy failed (1) sustained VT was induced during late PVS, (2) VT cycle length and symptoms during late PVS and during recurrent clinical VT were similar, and (3) the QTc failed to be prolonged significantly (32.5 + 1.6 ms in amiodarone failure vs. 84.1 + 27.1 ms in amiodarone success, P<0.05). It is concluded that (1) amiodarone in high-risk patients is clinically effective (88.3%), (2) patients with noninducible VT or nonsustained VT during late PVS did not have recurrent clinical VT, (3) late PVS isprobably predictive of electrophysiologic and hemodynamic consequences in patients with recurrent spontaneous VT, and (4) failure of the QTc interval to be prolonged substantially is probably predictive of clinical recurrence of VT.
Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital, 1988
Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachyc... more Atrioventricular nodal reentry is the most common mechanism of paroxysmal supraventricular tachycardia. Electrocardiograms obtained during sinus rhythm rarely serve to identify the mechanism of paroxysmal supraventricular tachycardia. We report two cases of dual atrioventricular nodal reentry in which electrocardiograms recorded during sinus rhythm disclosed two separate PR intervals that suggested dual atrioventricular nodal pathways.
The Journal of invasive cardiology, 2014
Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable sa... more Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable safety, could result in greater patient satisfaction and potential cost savings. Comparative analyses reporting the safety outcomes of same-day discharge vs overnight stay after elective PCI are lacking. Data of same-day discharge and overnight-stay patients undergoing elective PCI in a high-volume center were compared. We specifically evaluated the incidence of net adverse cardiovascular events (NACE; i.e., death, myocardial infarction, stroke, target vessel revascularization, vascular complication, and major bleeding) within 48 hours post index procedure among both groups and at 30 days. A total of 188 cases were evaluated, with 93 discharged the same day and 95 after overnight stay following elective PCI. Baseline characteristics were similar, except for older age (73.0 ± 7 years vs. 64.0 ± 12 years; P<.001), more prior PCI (49.5% vs. 34.7%; P<.001), and prior coronary artery bypa...
American Journal of Cardiology, Apr 1, 1985
Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myo... more Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myocardial infarction (AMI). We found published reports describing 5 patients with AMI who by angiography during the first day of presentation had total occlusion of the LM coronary artery. 1–3 . All 5, each of whom had presented with cardiogenic shock, had early intracoronary thrombolytic therapy with opening of the lumen of the LM coronary artery and all survived. Additionally, another reported patient with AMI had total occlusion of the LM coronary artery by angiogram at day 15—but no coronary angiogram or thrombolytic therapy earlier—and this patient was alive 1 year later. 4 The present report was prompted by study at necropsy of a patient who survived 54 hours after onset of AMI and who had total occlusion of the LM coronary artery by clot superimposed on atherosclerotic plaque.
The American Journal of Cardiology, 1985
Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myo... more Abstract Total occlusion of the left main (LM) coronary artery is rare in patients with acute myocardial infarction (AMI). We found published reports describing 5 patients with AMI who by angiography during the first day of presentation had total occlusion of the LM coronary artery. 1–3 . All 5, each of whom had presented with cardiogenic shock, had early intracoronary thrombolytic therapy with opening of the lumen of the LM coronary artery and all survived. Additionally, another reported patient with AMI had total occlusion of the LM coronary artery by angiogram at day 15—but no coronary angiogram or thrombolytic therapy earlier—and this patient was alive 1 year later. 4 The present report was prompted by study at necropsy of a patient who survived 54 hours after onset of AMI and who had total occlusion of the LM coronary artery by clot superimposed on atherosclerotic plaque.
Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital, 1987
The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent ... more The role of programmed ventricular stimulation (PVS) was evaluated in 12 patients with recurrent sustained ventricular tachycardia (VT) who were treated with amiodarone as the sole antiarrhythmic agent. At control PVS, sustained VT was induced in 11 patients and nonsustained VT was induced in one patient, as compared with late PVS (mean, 8.6 weeks) when sustained VT was induced in six patients and nonsustained VT was induced in five. Amiodarone significantly prolonged the patients' RR, PR, QRS, and QTc intervals, VT cycle length, and right ventricular effective refractory period. During a mean follow-up of 16 +/- 13.6 months, two patients had recurrent clinical VT. In the patients in whom amiodarone therapy failed (1) sustained VT was induced during late PVS, (2) VT cycle length and symptoms during late PVS and during recurrent clinical VT were similar, and (3) the QTc failed to be prolonged significantly (32.5 +/- 1.6 ms in amiodarone failure vs. 84.1 +/- 27.1 ms in amiodarone ...
The Journal of Invasive Cardiology, May 1, 2014
Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable sa... more Same-day discharge after percutaneous coronary intervention (PCI), if achieved with acceptable safety, could result in greater patient satisfaction and potential cost savings. Comparative analyses reporting the safety outcomes of same-day discharge vs overnight stay after elective PCI are lacking. Data of same-day discharge and overnight-stay patients undergoing elective PCI in a high-volume center were compared. We specifically evaluated the incidence of net adverse cardiovascular events (NACE; i.e., death, myocardial infarction, stroke, target vessel revascularization, vascular complication, and major bleeding) within 48 hours post index procedure among both groups and at 30 days. A total of 188 cases were evaluated, with 93 discharged the same day and 95 after overnight stay following elective PCI. Baseline characteristics were similar, except for older age (73.0 ± 7 years vs. 64.0 ± 12 years; P&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;.001), more prior PCI (49.5% vs. 34.7%; P&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;.001), and prior coronary artery bypass graft surgery (16.1% vs. 11.6%; P=.01) in the same-day discharge group. Procedural characteristics were similar in both groups. No significant difference in the NACE rate was found between the groups at 48 hours (0 [0%] vs. 2 [2.1%]; P=.25) or at 30 days (3 [3.2%] vs. 6 [6.3%]; P=.26). In the population studied, same-day discharge after PCI is safe and feasible. Adequately powered randomized prospective studies are necessary to confirm these results.