Prevalence, predictors, and outcomes of patient prosthesis mismatch in women undergoing TAVI for severe aortic stenosis: Insights from the WIN-TAVI registry.

OBJECTIVE: To evaluate the incidence, predictors and outcomes of female patients with patient-prosthesis mismatch (PPM) following transcatheter aortic valve intervention (TAVI) for severe aortic stenosis (AS). BACKGROUND: Female AS TAVI recipients have a significantly lower mortality than surgical aortic valve replacement (SAVR) recipients, which could be attributed to the potentially lower PPM rates. TAVI has been associated with lower rates of PPM compared to SAVR. PPM in females post TAVI has not been investigated to date. METHODS: The WIN-TAVI (Women's INternational Transcatheter Aortic Valve Implantation) registry is a multicenter registry of women undergoing TAVR for severe symptomatic AS. Two hundred and fifty patients with detailed periprocedural and follow-up echocardiographic investigations were included in the WIN-TAVI echocardiographic sub-study. PPM was defined as per European guidelines stratified by the presence of obesity. RESULTS: The incidence of PPM in our population was 32.8%. Patients with PPM had significantly higher BMI (27.4 ± 6.1 vs. 25.2 ± 5.0, p = .002), smaller sized valves implanted (percentage of TAVI ≤23 mm 61% vs. 29.2%, PPM vs. no PPM, p < .001) and were more often treated with balloon expandable valves (48.3 vs. 32.5%, p < .001) rather than self expanding ones (26.3 vs. 52.8%, <.001). BMI (OR = 1.08; 95%CI 1.02-1.14, p = .011) and valve size ≤23 mm (OR = 3.00 95%CI 1.14-7.94, p = .027) were the only independent predictors of PPM. There was no significant interaction between valve size and valve type (p = .203). No significant differences were observed in 1-year mortality or major adverse cardiovascular events. CONCLUSIONS: PPM in females undergoing TAVI occurs in one third of patients. BMI and valve size ≤23 mm are independent predictors. Larger registries are required to determine the impact of PPM on future clinical outcomes.

Incidence, predictors and clinical impact of permanent pacemaker insertion in women following transcatheter aortic valve implantation: Insights from a prospective multinational registry.

OBJECTIVES: To describe the incidence, predictors, and clinical impact of permanent pacemaker insertion (PPI) following transcatheter aortic valve replacement (TAVR) in women. BACKGROUND: Data on pacemaker insertion complicating TAVR in women are scarce. METHODS: The Women's International Transcatheter Aortic Valve implantation (WIN-TAVI) is a prospective registry evaluating the safety and efficacy of TAVR in women. We included patients without preprocedural pacemakers and divided them into two groups: (1) PPI and (2) no-PPI. We identified PPI predictors using logistic regression and studied its clinical impact on the Valve Academic Research Consortium (VARC)-2 efficacy and safety endpoints. RESULTS: Out of 1019 patients, 922 were included in the analysis. Post-TAVR PPI occurred in 132 (14.3%) patients. Clinical and procedural characteristics were similar in both groups. Pre-existing right bundle branch block (RBBB) was associated with a high risk of post-TAVR PPI (OR 3.62, 95% CI 1.85-7.06, p < 0.001), while implantation of balloon-expandable prosthesis was associated with a lower risk (OR 0.47, 95% CI 0.30-0.74, p < 0.001). Post-TAVR PPI prolonged in-hospital stay by a median of 2 days (11 [9-16] days in PPI vs. 9 [7-14] days in no-PPI, p = 0.005), yet risks of VARC-2 efficacy and safety endpoints at 1 year were similar in both groups (adj HR 0.95, 95% CI 0.60-1.52, p = 0.84 and adj HR 1.22, 95% CI 0.83-1.79, p = 0.31, respectively). CONCLUSION: Pacemaker implantation following TAVR is frequent among women and is associated with pre-existing RBBB and valve type. PPI prolongs hospital stay, albeit without any significant impact on 1-year outcomes.

Preprocedural anemia in females undergoing transcatheter aortic valve implantation: Insights from the WIN-TAVI registry.

OBJECTIVES: To assess the impact of anemia on clinical outcomes in female patients enrolled in the Women's InterNational transcatheter aortic valve implantation (WIN-TAVI) registry. BACKGROUND: Anemia is highly prevalent among females who constitute half of TAVI candidates, yet, its clinical significance remains poorly investigated. METHODS: Patients were divided into three groups according to preprocedural hemoglobin (Hb) level: (1) no anemia (Hb ≥12 g/dl), (2) mild-to-moderate anemia (10 ≤ Hb <12 g/dl), and (3) severe anemia (Hb <10 g/dl). The primary outcome was the occurrence of Valve Academic Research Consortium (VARC)-2 efficacy endpoint, a composite of mortality, stroke, myocardial infarction (MI), hospitalization for valve-related symptoms or heart failure or valve-related dysfunction at 1-year follow-up. RESULTS: Hemoglobin level was available in 877 (86.1%) patients: 412 (47.0%) had no anemia, 363 (41.4%) had mild-to-moderate anemia, and 102 (11.6%) had severe anemia. The latter group had a higher prevalence of cardiovascular risk factors. Compared with patients without anemia, severe anemia was associated with a greater risk of VARC-2 efficacy endpoint (adj HR 1.71, 95% CI: 1.02-2.87, p = .04), all-cause death (adj HR 2.36, 95% CI: 1.31-4.26, p = .004) and a composite of death, MI or stroke (adj HR 1.88, 95% CI: 1.10-3.22, p = .02) at 1 year. Moreover, an increased risk of late mortality (adj HR 1.15, 95% CI: 1.02-1.30, p = .03) was observed with every 1 g/dl decrease in hemoglobin level. CONCLUSION: Severe anemia in females undergoing TAVI was independently associated with increased rates of VARC-2 efficacy endpoint and mortality at 1 year.

Prognostic Impact of Prefrailty and Frailty in Women Undergoing TAVR: Insights From the WIN-TAVI Registry.

BACKGROUND: The risks of prefrail and frail women undergoing transcatheter aortic valve replacement (TAVR) have not been fully examined. The aim of the analysis was to assess the prognostic impact of prefrailty and frailty in women undergoing TAVR. METHODS: Women at intermediate or high surgical risk with severe aortic stenosis undergoing TAVR from the prospective multicentre WIN-TAVI (Women's International Transcatheter Aortic Valve Implantation) registry were stratified based on the number of Fried frailty criteria (weight loss, exhaustion, low physical activity, slow gait, weakness) met: nonfrail (no criteria), prefrail (1 or 2 criteria), or frail (3 or more criteria). The primary outcome at 1 year was the Valve Academic Research Consortium 2 (VARC-2) efficacy end point, a composite of mortality, stroke, myocardial infarction, hospitalisation for valve-related symptoms or heart failure, and valve-related dysfunction; secondary outcomes included the composite of VARC-2 life-threatening or major bleeding. RESULTS: Out of 1019 women, 297 (29.1%) met at least 1 frailty criterion: 264 (25.9%) had prefrailty and 33 (3.2%) frailty. The 1-year risk of the primary outcome was significantly higher in prefrail and frail (20.2%) than in nonfrail (14.9%) women (adjusted hazard ratio [aHR] 1.51, 95% confidence interval [CI] 1.07-2.12). The risk of VARC-2 life-threatening or major bleeding was higher in prefrail or frail (19.9%) than in nonfrail (10.0%) women (aHR 2.06, 95% CI 1.42-2.97). These risks were consistently increased in the prefrail and frail groups assessed separately. CONCLUSIONS: In women undergoing TAVR, the presence of prefrailty or frailty conferred an increased risk of the VARC-2 efficacy end point and of VARC-2 life-threatening or major bleeding.

Outcomes in Patients With Early Menopause Who Underwent Transcatheter Aortic Valve Implantation.

Early menopause is associated with an increased risk of cardiovascular diseases, including aortic stenosis (AS). We sought to investigate the prevalence and impact of early menopause on clinical outcomes in patients who underwent transcatheter aortic valve implantation (TAVI) for severe symptomatic AS. Women's International TAVI is a multinational, prospective, observational registry of women who underwent TAVI for severe symptomatic AS (n = 1,019). Patients were divided into 2 groups based on age of menopause: early menopause (age ≤45 years) and regular menopause (age >45 years). The primary outcome of interest was Valve Academic Research Consortium 2 efficacy end point, a composite of mortality, stroke, myocardial infarction, hospitalization for valve-related symptoms, or heart failure or valve-related dysfunction at 1-year follow-up. Of 732 patients with available data on menopause age, 173 (23.6%) were classified as having early menopause. These patients presented for TAVI at a younger age (81.6 ± 6.9 vs 82.7 ± 5.9, p = 0.05) and had a significantly lower Society of Thoracic Surgeons score (6.6 ± 4.8 vs 8.2 ± 7.1, p = 0.03) than those with regular menopause. However, the total valve calcium volume was smaller among patients with early versus regular menopause (731.8 ± 850.9 mm3 vs 807.6 ± 633.8 mm3, p = 0.002). Other co-morbidities were similar between the 2 groups. At 1-year follow-up, there were no significant differences in clinical outcomes between patients with early versus regular menopause (hazard ratio 1.00, 95% confidence interval 0.61 to 1.63, p = 1.00). In conclusion, despite presenting for TAVI at a younger age, patients with early menopause had a similar risk of adverse events as patients with regular menopause at 1 year after TAVI.

Pre-procedural oral anticoagulant use is associated with cardiovascular events in women after transcatheter aortic valve replacement: An analysis from the WIN-TAVI cohort.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) has become an accepted treatment for patients with severe aortic stenosis (AS). Predicting which patients are at risk for adverse clinical outcomes after TAVI remains difficult, especially in women. AIM: To identify predictors of adverse events in the WIN-TAVI cohort. METHODS: The WIN-TAVI study is an observational registry of 1019 women undergoing TAVI for severe symptomatic AS. Follow-up was 1 year. The primary outcome was defined according to VARC-2: a composite of mortality, stroke, myocardial infarction or hospitalization for valve-related symptoms or heart failure. The secondary outcome was a composite of cardiovascular mortality or hospitalization for valve-related symptoms or heart failure. RESULTS: We included 1019 women with severe AS (mean age of 82.5 ± 6.3 years). At 1 year, 16.4% of the patients experienced the primary endpoint and 12.6% the secondary endpoint. The use of oral anticoagulants (OAC) was the strongest independent predictor of the primary outcome (adjusted hazard ratio [aHR] 1.51, 95% confidence interval [CI] 1.079-2.106, p = 0.016). Independent predictors of the secondary endpoint were age (aHR 1.04 per year, 95% CI 1.01-1.074, p = 0.016) and use of OAC (aHR: 1.79, 95% CI 1.24-2.60, p = 0.002). OAC use was not associated with higher bleeding risk. CONCLUSION: Pre-procedural use of OAC was the strongest predictor of adverse outcomes during 1-year follow-up, likely reflecting a combination of high-risk factors and comorbidities, but was not related to increased bleeding risk.

Coronary Obstruction After Transcatheter Aortic Valve Replacement: Insights From the Spanish TAVI Registry.

BACKGROUND: Coronary obstruction (CO) following transcatheter aortic valve replacement (TAVR) is a life-threatening complication, scarcely studied. OBJECTIVES: The authors analyzed the incidence of CO after TAVR, presentation, management, and in-hospital and 1-year clinical outcomes in a large series of patients undergoing TAVR. METHODS: Patients from the Spanish TAVI (Transcatheter Aortic Valve Implantation) registry who presented with CO in the procedure, during hospitalization or at follow-up were included. Computed tomography (CT) risk factors were assessed. In-hospital, 30-day, and 1-year all-cause mortality rates were analyzed and compared with patients without CO using logistic regression models in the overall cohort and in a propensity score-matched cohort. RESULTS: Of 13,675 patients undergoing TAVR, 115 (0.80%) presented with a CO, mainly during the procedure (83.5%). The incidence of CO was stable throughout the study period (2009-2021), with a median annual rate of 0.8% (range 0.3%-1.3%). Preimplantation CT scans were available in 105 patients (91.3%). A combination of at least 2 CT-based risk factors was less frequent in native than in valve-in-valve patients (31.7% vs 78.3%; P < 0.01). Percutaneous coronary intervention was the treatment of choice in 100 patients (86.9%), with a technical success of 78.0%. In-hospital, 30-day, and 1-year mortality rates were higher in CO patients than in those without CO (37.4% vs 4.1%, 38.3% vs 4.3%, and 39.1% vs 9.1%, respectively; P < 0.001). CONCLUSIONS: In this large, nationwide TAVR registry, CO was a rare, but often fatal, complication that did not decrease over time. The lack of identifiable predisposing factors in a subset of patients and the frequently challenging treatment when established may partly explain these findings.

Impact of diabetes mellitus on female subjects undergoing transcatheter aortic valve implantation: Insights from the WIN-TAVI international registry.

BACKGROUND: Female subjects constitute half of all transcatheter aortic valve implantation (TAVI) candidates, but the association between important comorbidities such as diabetes mellitus (DM) and clinical outcomes after TAVI remains unclear in this group. METHOD: WIN-TAVI is a real-world international registry of exclusively female subjects undergoing TAVI. The study population was stratified into those with (DM) and those without DM (NDM). Valve Academic Research Consortium (VARC)-2 efficacy (composite of all-cause death, stroke, myocardial infarction, hospitalization for valve-related symptoms or worsening congestive heart failure, or valve-related dysfunction) was the primary endpoint for this analysis. RESULTS: Of the 1012 subjects included in this study, 264 (26.1%) had DM at baseline. DM patients were younger but had a higher burden of comorbidities. There were no differences in VARC-2 efficacy events between DM and NDM patients at 30 days or 1 year. Conversely, patients with DM had a lower risk of VARC-2 life threatening bleeding at 30 days and 1 year after TAVI compared to NDM patients, which remained significant even after multivariable adjustment (HR, 0.34, 95% CI, 0.12-0.99; p = .047). In the subgroup analysis, insulin-dependent DM was not associated with an increased risk of adverse outcomes. CONCLUSIONS: Among female patients undergoing TAVI, more than one-fourth of the subjects presented with DM. At 1-year follow-up, DM was associated with lower bleeding complications and no increase in the risk of other adverse events, including mortality, after TAVI.

[Acute reperfusion therapy in elderly women with acute myocardial infarction with ST-segment elevation: efficacy in the reduction of their mortality]. / Tratamiento de revascularización en fase aguda del infarto de miocardio con elevación del segmento ST en mujeres ancianas: eficacia en la reducción de su mortalidad.

BACKGROUND AND OBJECTIVE: Elderly patients with acute coronary syndromes, particularly elderly women, suffer higher mortality and more morbidity than their younger counterparts. We try to document the outcome, treatment received and prognostic factors in this group. PATIENTS AND METHOD: All data for ST-segment elevation myocardial infarction in women aged >/= 75 admitted to our hospital from 2002 to 2007 were retrospectively collected, including epidemiological and clinical variables, vascular complications, in-hospital outcome and middle-term follow-up. These data were analysed and compared depending on reperfusion therapy or not on admission. We determined the causes of not receiving this therapy and the causes of mortality. RESULTS: A total of 195 females were identified. Mean age was 82.7, diabetics 33% and 41% had anterior wall myocardial infarction. Killip III-IV was found in 26.2%. 25.6% of patients underwent reperfusion therapy. In-hospital mortality was 28.7% and 6-months mortality was 39.8%. During one-year follow-up, the major cardiac events rate in these patients was 45.7%. Age, left bundle-branch block o pacemaker rhythm in the electrocardiogram, delayed admission and medical decision were associated with lower reperfusion therapy rates. Death rate was clearly lower (2.7 times) in treated patients although relative risk of bleeding complications was higher. The absence of reperfusion therapy, high Killip on admission and low left ventricular ejection fraction were independently associated with higher mortality. CONCLUSIONS: Acute myocardial infarction in elderly women remains a high morbidity and mortality pathology. This group is less likely to receive acute reperfusion therapies, which have apparently been proven to improve outcome and decrease the mortality rate.

[Myocardial infarction with ST segment elevation and angiographically normal coronary arteries: epidemiology and mid-term follow-up]. / Infarto de miocardio con elevación del segmento ST y arterias coronarias angiográficamente normales: epidemiología y evolución a medio plazo.

BACKGROUND AND OBJECTIVE: The myocardial infarction (MI) with ST elevation and angiographically normal coronary arteries isn't frequent. The aim of this study is to describe clinical characteristic and mid-term follow-up of those patients. PATIENTS AND METHOD: Between January 1997 and December 2004 we identified 75 patients with MI and normal coronary arteries in a coronary angiography performed within one month of the AMI. All had criteria of MI and their coronary arteries were smooth and without obstructive lesions. RESULTS: The incidence was 3%, and mean age (standard deviation): 49 (11) years; 63% of patients were males and 47% were smokers, 33% had hypertension, 24% dislipemia and 9% diabetes. No patient had previous angina. MI location was anterior in 43%, inferior in 40% and lateral in 17%. The peak of creatine phosphokinase was 700 U/dl (range: 431-1,115) and the ejection fraction was 65% (14%). After a medium follow up of 30 months (range: 12-84) the events were: one death and 2 new MI. CONCLUSIONS: MI with normal coronary arteries is rare, is associated with a relative low rate of coronary risk factors, and with a good initial outcome, low rate of recurrent events and preservation of left ventricular function.

[Acetylsalicylic acid desensitization in the new era of percutaneous coronary intervention]. / Desensibilización al ácido acetil salicílico en la nueva era del intervencionismo coronario percutáneo.

Dual antiplatelet therapy is essential in patients undergoing percutaneous coronary intervention with stent implantation. Hypersensitivity to acetylsalicylic acid (ASA) limits treatment options. Desensitization to ASA has classically been studied in patients with respiratory tract disease. Over the last years, many protocols have been described about ASA desensitization in patients with ischemic heart disease, including acute coronary syndrome and the need for coronary stent implantation. It is important to know the efficacy and safety of ASA desensitization in these patients.

Independent origin of all three coronary arteries from the right coronary sinus.

We present a case of a patient who underwent coronary angiography in a setting of acute myocardial infarction, which showed an independent origin of all three coronary arteries from the right coronary sinus. This has rarely been described in the medical literature.

Stent dislodgement during Szabo technique.

The implantation of a stent in ostial lesions with Szabo technique is a simple, ingenious and useful way of treating these complex lesions. But in some circumstances the manipulation of the stent added to a calcified vessel could finish with complications. We present a case of stent dislodgement during Szabo technique in an ostial lesion placed in left anterior descending artery.

Desensibilización al ácido acetil salicílico en la nueva era del intervencionismo coronario percutáneo / Acetylsalicylic acid desensitization in the new era of percutaneous coronary intervention

El tratamiento con doble antiagregación plaquetaria es imprescindible en los pacientes que van a ser sometidos a un intervencionismo coronario percutáneo con implante de stent. La hipersensibilidad al ácido acetil salicílico (AAS) limita las posibilidades terapéuticas. La desensibilización al AAS ha sido clásicamente estudiada en pacientes con enfermedad del tracto respiratorio. En los últimos años se han descrito varios protocolos de desensibilización en pacientes con cardiopatía isquémica, incluyendo el síndrome coronario agudo y la necesidad de implante de stent coronario. Es importante conocer la eficacia y seguridad de la desensibilización al AAS en estos pacientes (AU)

Dual antiplatelet therapy is essential in patients undergoing percutaneous coronary intervention with stent implantation. Hypersensitivity to acetylsalicylic acid (ASA) limits treatment options. Desensitization to ASA has classically been studied in patients with respiratory tract disease. Over the last years, many protocols have been described about ASA desensitization in patients with ischemic heart disease, including acute coronary syndrome and the need for coronary stent implantation. It is important to know the efficacy and safety of ASA desensitization in these patients (AU)

Tratamiento de revascularización en fase aguda del infarto de miocardio con elevación del segmento ST en mujeres ancianas: eficacia en la reducción de su mortalidad / Acute reperfusion therapy in elderly women with acute myocardial infarction with ST-segment elevation: efficacy in the reduction of their mortality

Fundamento y objetivo: Los ancianos que presentan un síndrome coronario agudo, y especialmente las mujeres, constituyen un subgrupo con elevadísima morbimortalidad. Intentamos conocer su evolución, tratamiento recibido y factores que determinan su pronóstico. Pacientes y método: Se recogieron retrospectivamente datos de las mujeres de 75 años o más ingresadas en nuestro hospital por infarto de miocardio (IAM) transmural (años 2002-2007), y se incluyeron variables epidemiológicas, las complicaciones vasculares y la incidencia de episodios hospitalarios y a medio plazo. Los datos se analizaron según hubiesen recibido o no tratamiento de repercusión al ingreso. Se investigaron los factores asociados a la ausencia de tratamiento revascularizador y a la mortalidad. Resultados: Se incluyeron 195 mujeres, con una edad media de 82,7 años. Un 33% eran diabéticas, el 41% presentó IAM de localización anterior y un 26,2% mostraba grados Killip III-IV al ingreso. Se realizó tratamiento de revascularización en fase aguda al 25,6%. La mortalidad intrahospitalaria fue del 28,7% y la mortalidad a los 6 meses fue del 39,8%. La incidencia de eventos cardíacos mayores adversos al año fue del 45,7%.Resultados: La edad, la presencia de bloqueo de rama izquierda o ritmo de marcapasos en el electrocardiograma inicial, el retraso en la demanda de atención médica y el retraso diagnóstico dificultaban la administración de tratamiento en fase aguda. La mortalidad fue 2,7 veces menor en el grupo tratado, a pesar del mayor riesgo de complicaciones hemorrágicas. La ausencia de tratamiento revascularizador, el grado Killip elevado y la baja fracción de eyección fueron predictores independientes de mortalidad. Conclusiones: El IAM en ancianas continua siendo una patología con elevada morbimortalidad. Estas pacientes reciben escaso tratamiento revascularizador en fase aguda a pesar de su aparente beneficio en la reducción de la mortalidad (AU)

Background and objective: Elderly patients with acute coronary syndromes, particularly elderly women, suffer higher mortality and more morbidity than their younger counterparts. We try to document the outcome, treatment received and prognostic factors in this group. Patients and method: All data for ST-segment elevation myocardial infarction in women aged ¡Ý 75 admitted to our hospital from 2002 to 2007 were retrospectively collected, including epidemiological and clinical variables, vascular complications, in-hospital outcome and middle-term follow-up. These data were analysed and compared depending on reperfusion therapy or not on admission. We determined the causes of not receiving this therapy and the causes of mortality. Results: A total of 195 females were identified. Mean age was 82.7, diabetics 33% and 41% had anterior wall myocardial infarction. Killip III-IV was found in 26.2%. 25.6% of patients underwent reperfusion therapy. In-hospital mortality was 28.7% and 6-months mortality was 39.8%. During one-year follow-up, the major cardiac events rate in these patients was 45.7%.Results: Age, left bundle-branch block o pacemaker rhythm in the electrocardiogram, delayed admission and medical decision were associated with lower reperfusion therapy rates. Death rate was clearly lower (2.7 times) in treated patients although relative risk of bleeding complications was higher. The absence of reperfusion therapy, high Killip on admission and low left ventricular ejection fraction were independently associated with higher mortality. Conclusions: Acute myocardial infarction in elderly women remains a high morbidity and mortality pathology. This group is less likely to receive acute reperfusion therapies, which have apparently been proven to improve outcome and decrease the mortality rate (AU)

Infarto de miocardio con elevación del segmento ST y arterias coronarias angiográficamente normales: epidemiología y evolución a medio plazo / Myocardial infarction with ST segment elevation and angiographycally normal coronary arteries: epidemiology and mid-term follow-up

Fundamento y objetivo: El infarto de miocardio (IM) con elevación del segmento ST y arterias coronarias angiográficamente normales es poco frecuente. El objetivo de este estudio ha sido describir las características clínicas y evolución en nuestro medio. Pacientes y método: Entre 1997 y 2004 identificamos a 75 pacientes con IM con elevación del ST y coronariografía normal (coronarias lisas y sin lesiones obstructivas) en el primer mes del IM. Resultados: La incidencia fue del 3%, con una edad media (desviación estándar) de 49 (11) años. Un 63% eran varones y un 47% fumadores; el 33% presentaba hipertensión, el 24% dislipemia y el 9% diabetes; ninguno refería cardiopatía isquémica previa. La localización del IM fue anterior en el 43% de los casos, inferior en el 40% y lateral en el 17%. La media del pico de creatincinasa fue de 700 U/dl (extremos: 431-1.115) y la fracción de eyección media del 65% (14%). La media de seguimiento fue de 30 meses (extremos: 12-84). La fracción de eyección no se deterioró en este período. Los eventos fueron una muerte y 2 nuevos IM. Conclusiones: El IM con arterias coronarias normales es poco frecuente, se asocia a relativamente pocos factores de riesgo y tiene buen pronóstico inicial, con una tasa de eventos baja y preservación de la función ventricular

Background and objective: The myocardial infarction (MI) with ST elevation and angiographically normal coronary arteries isn't frecuent. The aim of this study is to describe clinical characteristic and mid-term follow-up of those patients. Patients and method: Between January 1997 and December 2004 we identified 75 patients with MI and normal coronary arteries in a coronary angiography performed within one month of the AMI. All had criteria of MI and their coronary arteries were smooth and without obstructive lesions. Results: The incidence was 3%, and mean age (standard deviation): 49 (11) years; 63% of patients were males and 47% were smokers, 33% had hypertension, 24% dislipemia and 9% diabetes. No patient had previous angina. MI location was anterior in 43%, inferior in 40% and lateral in 17%. The peak of creatine phosphokinase was 700 U/dl (range: 431-1,115) and the ejection fraction was 65% (14%). After a medium follow up of 30 months (range: 12-84) the events were: one death and 2 new MI. Conclusions: MI with normal coronary arteries is rare, is associated with a relative low rate of coronary risk factors, and with a good initial outcome, low rate of recurrent events and preservation of left ventricular function