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1.
Eur J Vasc Endovasc Surg ; 66(6): 775-782, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37201718

RESUMEN

OBJECTIVE: To describe the trends in management and outcomes of patients with acute type B aortic dissection in the International Registry of Acute Aortic Dissection. METHODS: From 1996 - 2022, 3 908 patients were divided into similar sized quartiles (T1, T2, T3, and T4). In hospital outcomes were analysed for each quartile. Survival rates following admission were compared using Kaplan-Meier analyses with Mantel-Cox Log rank tests. RESULTS: Endovascular treatment increased from 19.1% in T1 to 37.2% in T4 (ptrend < .001). Correspondingly, medical therapy decreased from 65.7% in T1 to 54.0% in T4 (ptrend < .001), and open surgery from 14.8% in T1 to 7.0% in T4 (ptrend < .001). In hospital mortality decreased in the overall cohort from 10.7% in T1 to 6.1% in T4 (ptrend < .001), as well as in medically, endovascularly and surgically treated patients (ptrend = .017, .033, and .011, respectively). Overall post-admission survival at three years increased (T1: 74.8% vs. T4: 77.3%; p = .006). CONCLUSION: Considerable changes in the management of acute type B aortic dissection were observed over time, with a significant increase in the use of endovascular treatment and a corresponding reduction in open surgery and medical management. These changes were associated with a decreased overall in hospital and three year post-admission mortality rate among quartiles.

2.
J Card Surg ; 35(12): 3467-3473, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32939836

RESUMEN

BACKGROUND: Type A acute aortic dissection (TAAAD) represents a surgical emergency requiring intervention regardless of time of day. Whether such a "evening effect" exists regarding outcomes for TAAAD has not been previously studied using a large registry data. METHODS: Patients with TAAAD were identified from the International Registry of Acute Aortic Dissections (1996-2019). Outcomes were compared between patients undergoing operative repair during the daytime (D), defined as 8 am-5 pm, versus the evening (N), defined as 5 pm-8 am. RESULTS: Four thousand one-hundrd and ninety-seven surgically treated patients with TAAAD were identified, with 1824 patients undergoing daytime surgery (43.5%) and 2373 patients undergoing evening surgery (56.5%). Daytime patients were more likely to have undergone prior cardiac surgery (13.2% vs. 9.5%; p < .001) and have had a prior aortic dissection (4.8% vs. 3.4%; p = .04). Evening patients were more likely to have been transferred from a referring hospital (70.8% vs. 75.0%; p = .003). Daytime patients were more likely to undergo aortic valve sparing root procedures (23.3% vs. 19.2%; p = .035); however, total arch replacement was performed with equal frequency (19.4% vs. 18.8%; p = .751). In-hospital mortality (D: 17.3% vs. N. 16.2%; p = .325) was similar between both groups. Subgroup analysis examining the effect of weekend presentation revealed no significant mortality difference. CONCLUSIONS: A majority of TAAAD patients underwent surgical repair at night. There were higher rates of postoperative tamponade in evening patients; however, mortality was similar. The expertise of cardiac-dedicated operative and critical care teams regardless of time of day as well as training paradigms may explain similar mortality outcomes in this high risk population.


Asunto(s)
Aneurisma de la Aorta Torácica , Disección Aórtica , Implantación de Prótesis Vascular , Enfermedad Aguda , Disección Aórtica/cirugía , Aorta/cirugía , Aneurisma de la Aorta Torácica/cirugía , Mortalidad Hospitalaria , Humanos , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/cirugía , Estudios Retrospectivos , Factores de Riesgo , Resultado del Tratamiento
3.
Ann Vasc Surg ; 42: 143-149, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28390915

RESUMEN

BACKGROUND: We aimed to identify predictors of stable aortic dimensions in medically managed type B aortic dissections (TBAD). METHODS: Medically managed TBAD patients from the International Registry of Acute Aortic Dissection with available aortic measurements at up to 24 months were included. Growth rate was calculated by dividing the largest descending diameter at the latest end point not influenced by intervention minus initial descending diameter, by the recorded time interval. Patients were split into 2 groups: without aortic growth (<0.0 mm/year, group I) and with aortic growth (>0.0 mm/year, group II). RESULTS: 219 patients had available data for our inclusion criteria and comprised group I (n = 89, 40.6%) and group II (n = 130, 59.4%). Mean expansion rate of the total cohort was 0.19 ± 0.81 cm, mean expansion rate in group I was -0.47 ± 0.54 cm, and in group II, it was +0.63 ± 0.64 cm. Patients in group I were more frequently of Asian descent (15.9% vs. 3.1%, P = 0.001), showed more often intramural hematoma on imaging (57.3% vs. 30.0%, P < 0.001) and demonstrated complete false lumen thrombosis more frequently (25.0% vs. 9.9%, P = 0.009). Group II patients were more Caucasian (77.3% vs. 92.2%, P = 0.002), presented more with posterior chest pain (57.8% vs. 74.7%, P = 0.025), back pain (68.2% vs. 80.2%, P = 0.046), a visible double lumen (50.6% vs. 63.8%, P = 0.050), dissection originating from the left subclavian artery (51.2% vs. 68.5%, P = 0.011), and a completely patent false lumen (37.5% vs. 62.4%, P = 0.002). Mortality rates between groups were similar (2.2% vs. 1.5%, P = 0.708). Complete false lumen thrombosis was an independent predictor of no growth (hazard ratio [HR]: 3.640, P = 0.011), while a larger sinotubular junction (STJ) (HR: 0.304, P = 0.004) and female gender (HR: 0.325, P = 0.030) were negative predictors of no growth. CONCLUSIONS: Complete false lumen thrombosis was a predictor of no growth, while a large STJ and female gender were predictors of aortic growth. This study might help predict which medically treated TBAD patients might show a stable clinical course during follow-up.


Asunto(s)
Aneurisma de la Aorta/terapia , Disección Aórtica/terapia , Enfermedad Aguda , Anciano , Disección Aórtica/diagnóstico por imagen , Disección Aórtica/mortalidad , Aneurisma de la Aorta/diagnóstico por imagen , Aneurisma de la Aorta/mortalidad , Progresión de la Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Sistema de Registros , Factores de Riesgo , Factores Sexuales , Trombosis/diagnóstico por imagen , Factores de Tiempo , Resultado del Tratamiento
4.
Am Heart J ; 176: 93-9, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-27264225

RESUMEN

AIMS: Shock is among the most dreaded and common complications of type A acute aortic dissection (TAAAD). However, clinical correlates, management, and short- and long-term outcomes of TAAAD patients presenting with shock in real-world clinical practice are not known. METHODS AND RESULTS: We evaluated 2,704 patients with TAAAD enrolled in the International Registry of Acute Aortic Dissection between January 1, 1996, and August 18, 2012. On admission, 407 (15.1%) TAAAD patients presented with shock. Most in-hospital complications (coma, myocardial or mesenteric ischemia or infarction, and cardiac tamponade) were more frequent in shock patients. In-hospital mortality was significantly higher in TAAAD patients with than without shock (30.2% vs 23.9%, P=.007), regardless of surgical or medical treatment. Most shock patients underwent surgical repair, with medically managed patients demonstrating older age and more complications at presentation. Estimates using Kaplan-Meier survival analysis indicated that most (89%) TAAAD patients with shock discharged alive from the hospital survived 5years, a rate similar to that of TAAAD patients without shock (82%, P=.609). CONCLUSIONS: Shock occurred in 1 of 7 TAAAD patients and was associated with higher rates of in-hospital adverse events and mortality. However, TAAAD survivors with or without shock showed similar long-term mortality. Successful early and aggressive management of shock in TAAAD patients has the potential for improving long-term survival in this patient population.


Asunto(s)
Aneurisma de la Aorta Torácica , Disección Aórtica , Choque , Procedimientos Quirúrgicos Vasculares , Adulto , Anciano , Disección Aórtica/complicaciones , Disección Aórtica/epidemiología , Aneurisma de la Aorta Torácica/complicaciones , Aneurisma de la Aorta Torácica/epidemiología , Manejo de la Enfermedad , Femenino , Salud Global/estadística & datos numéricos , Mortalidad Hospitalaria , Hospitalización/estadística & datos numéricos , Humanos , Estimación de Kaplan-Meier , Masculino , Evaluación de Procesos y Resultados en Atención de Salud , Sistema de Registros , Factores de Riesgo , Choque/etiología , Choque/mortalidad , Choque/fisiopatología , Choque/terapia , Procedimientos Quirúrgicos Vasculares/métodos , Procedimientos Quirúrgicos Vasculares/estadística & datos numéricos
5.
Circulation ; 128(11 Suppl 1): S180-5, 2013 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-24030404

RESUMEN

BACKGROUND: Prior cardiac surgery (PCS) can complicate the presentation and management of patients with type A acute aortic dissection (TAAAD). This report from the International Registry of Acute Aortic Dissection examines this hypothesis. METHODS AND RESULTS: A total of 352 of 2196 patients with TAAAD (16%) enrolled in the International Registry of Acute Aortic Dissection had cardiac surgery before dissection, including coronary artery bypass grafting (34%), aortic or mitral valve surgery (36%), aortic surgery (42%), and other cardiac surgery (16%). Those with PCS were older, had a higher frequency of diabetes mellitus, hypertension, and atherosclerosis, and presented later from symptom onset to hospital presentation and diagnosis (all P<0.05). In-hospital mortality was significantly higher for PCS patients (34% versus 23%; P<0.001). Five-year mortality was independently predicted by PCS (hazard ratio [HR], 2.04; 95% confidence interval [CI], 1.05-3.95), age >70 years (HR, 2.65; 95% CI, 1.40-5.05), medical management (HR, 5.10; 95% CI, 2.43-10.71), distal communication (HR, 2.64; 95% CI, 1.35-5.14), and coma (HR, 9.50; 95% CI, 2.05-44.05). Among patients with PCS, in-hospital (43% medical versus 30% surgical; P=0.033) and intermediate-term mortality was higher in patients with medical versus surgical management. Propensity-matched analysis revealed significant increase in mortality with medical management, but not with PCS. CONCLUSIONS: PCS delays presentation, diagnosis, and treatment of TAAAD and is an important adverse risk factor for early and intermediate-term mortality. This effect may be because of increased medical management in this patient population.


Asunto(s)
Aneurisma de la Aorta/mortalidad , Disección Aórtica/mortalidad , Procedimientos Quirúrgicos Cardíacos/mortalidad , Internacionalidad , Complicaciones Posoperatorias/mortalidad , Sistema de Registros , Enfermedad Aguda , Anciano , Disección Aórtica/diagnóstico , Aneurisma de la Aorta/diagnóstico , Procedimientos Quirúrgicos Cardíacos/tendencias , Estudios de Cohortes , Diagnóstico Diferencial , Femenino , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/diagnóstico , Estudios Prospectivos , Estudios Retrospectivos , Tasa de Supervivencia/tendencias , Resultado del Tratamiento
6.
Circulation ; 128(11 Suppl 1): S175-9, 2013 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-24030403

RESUMEN

BACKGROUND: Stroke is a highly dreaded complication of type A acute aortic dissection (TAAAD). However, little data exist on its incidence and association with prognosis. METHODS AND RESULTS: We evaluated 2202 patients with TAAAD (mean age 62 ± 14 years, 1487 [67.5%] men) from the International Registry of Acute Aortic Dissection to determine the incidence and prognostic impact of stroke in TAAAD. Stroke was present at arrival in 132 (6.0%) patients with TAAAD. These patients were older (65 ± 12 versus 62 ± 15 years; P=0.002) and more likely to have hypertension (86% versus 71%; P=0.001) or atherosclerosis (29% versus 22%; P=0.04) than patients without stroke. Chest pain at arrival was less common in patients with stroke (70% versus 82%; P<0.001), and patients with stroke presented more often with syncope (44% versus 15%; P<0.001), shock (14% versus 7%; P=0.005), or pulse deficit (51% versus 29%; P ≤ 0.001). Arch vessel involvement was more frequent among patients with stroke (68% versus 37%; P<0.001). They had less surgical management (74% versus 85%; P<0.001). Hospital stay was significantly longer in patients with stroke (median 17.9 versus 13.3 days; P<0.001). In-hospital complications, such as hypotension, coma, and malperfusion syndromes, and in-hospital mortality (adjusted odds ratio, 1.62; 95% confidence interval, 0.99-2.65) were higher among patients with stroke. Among hospital survivors, follow-up mortality was similar between groups (adjusted hazard ratio, 1.15; 95% confidence interval, 0.46-2.89). CONCLUSIONS: Stroke occurred in >1 of 20 patients with TAAAD and was associated with increased in-hospital morbidity but not long-term mortality. Whether aggressive early invasive interventions will reduce negative outcomes remains to be evaluated in future studies.


Asunto(s)
Aneurisma de la Aorta/mortalidad , Disección Aórtica/mortalidad , Mortalidad Hospitalaria/tendencias , Accidente Cerebrovascular/mortalidad , Enfermedad Aguda , Anciano , Disección Aórtica/clasificación , Disección Aórtica/terapia , Aneurisma de la Aorta/clasificación , Aneurisma de la Aorta/terapia , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Estudios Retrospectivos , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/terapia , Resultado del Tratamiento
7.
Circ Cardiovasc Qual Outcomes ; 17(9): e010673, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39145396

RESUMEN

BACKGROUND: Over the past 25 years, diagnosis and therapy for acute aortic dissection (AAD) have evolved. We aimed to study the effects of these iterative changes in care. METHODS: Patients with nontraumatic AAD enrolled in the International Registry of Acute Aortic Dissection (61 centers; 15 countries) were divided into time-based tertiles (groups) from 1996 to 2022. The impact of changes in diagnostics, therapeutic care, and in-hospital and 3-year mortality was assessed. Cochran-Armitage trend and Jonckheere-Terpstra tests were conducted to test for any temporal trend. RESULTS: Each group consisted of 3785 patients (mean age, ≈62 years old; ≈65.5% males); nearly two-thirds had type A AAD. Over time, the rates of hypertension increased from 77.8% to 80.4% (P=0.002), while smoking (34.1% to 30.6%, P=0.033) and atherosclerosis decreased (25.6%-16.6%; P<0.001). Across groups, the percentage of surgical repair of type A AAD increased from 89.1% to 92.5% (P<0.001) and was associated with decreased hospital mortality (from 24.1% in group 1 to 16.7% in group 3; P<0.001). There was no difference in 3-year survival (P=0.296). For type B AAD, stent graft therapy (thoracic endovascular aortic repair) was used more frequently (22.3%-35.9%; P<0.001), with a corresponding decrease in open surgery. Endovascular in-hospital mortality decreased from 9.9% to 6.2% (P=0.003). As seen with the type A AAD cohort, overall 3-year mortality for patients with type B AAD was consistent over time (P=0.084). CONCLUSIONS: Over 25 years, substantial improvements in-hospital survival were associated with a more aggressive surgical approach for patients with type A AAD. Open surgery has been partially supplanted by thoracic endovascular aortic repair for complicated type B AAD, and in-hospital mortality has decreased over the time period studied. Postdischarge survival for up to 3 years was similar over time.


Asunto(s)
Aneurisma de la Aorta , Disección Aórtica , Procedimientos Endovasculares , Mortalidad Hospitalaria , Sistema de Registros , Humanos , Disección Aórtica/mortalidad , Disección Aórtica/cirugía , Disección Aórtica/terapia , Disección Aórtica/diagnóstico , Masculino , Femenino , Persona de Mediana Edad , Factores de Tiempo , Factores de Riesgo , Resultado del Tratamiento , Enfermedad Aguda , Anciano , Aneurisma de la Aorta/mortalidad , Aneurisma de la Aorta/terapia , Aneurisma de la Aorta/cirugía , Aneurisma de la Aorta/diagnóstico , Aneurisma de la Aorta/diagnóstico por imagen , Procedimientos Endovasculares/mortalidad , Procedimientos Endovasculares/efectos adversos , Medición de Riesgo , Implantación de Prótesis Vascular/mortalidad , Implantación de Prótesis Vascular/efectos adversos
8.
Circulation ; 126(11 Suppl 1): S91-6, 2012 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-22965999

RESUMEN

BACKGROUND: Acute aortic intramural hematoma (IMH) is an important subgroup of aortic dissection, and controversy surrounds appropriate management. METHODS AND RESULTS: Patients with acute aortic syndromes in the International Registry of Acute Aortic Dissection (1996-2011) were evaluated to examine differences between patients (based on the initial imaging test) with IMH or classic dissection (AD). Of 2830 patients, 178 had IMH (64 type A [42%], 90 type B [58%], and 24 arch). Patients with IMH were older and presented with similar symptoms, such as severe pain. Patients with type A IMH were less likely to present with aortic regurgitation or pulse deficits and were more likely to have periaortic hematoma and pericardial effusion. Although type A IMH and AD were managed medically infrequently, type B IMH were more frequently treated medically. Overall in-hospital mortality was not statistically different for type A IMH compared to AD (26.6% versus 26.5%; P=0.998); type A IMH managed medically had significant mortality (40.0%), although less than classic AD (61.8%; P=0.195). Patients with type B IMH had a hospital mortality that was less but did not differ significantly (4.4% versus 11.1%; P=0.062) from classic AD. One-year mortality was not significantly different between AD and IMH. CONCLUSIONS: Acute IMH has similar presentation to classic AD but is more frequently complicated with pericardial effusions and periaortic hematoma. Patients with IMH have a mortality that does not differ statistically from those with classic AD. A small subgroup of type A IMH patients are managed medically and have a significant in-hospital mortality.


Asunto(s)
Aneurisma de la Aorta/epidemiología , Disección Aórtica/epidemiología , Hematoma/epidemiología , Enfermedad Aguda , Factores de Edad , Anciano , Anciano de 80 o más Años , Disección Aórtica/clasificación , Disección Aórtica/complicaciones , Disección Aórtica/tratamiento farmacológico , Disección Aórtica/cirugía , Aneurisma de la Aorta/clasificación , Aneurisma de la Aorta/complicaciones , Aneurisma de la Aorta/tratamiento farmacológico , Aneurisma de la Aorta/cirugía , Insuficiencia de la Válvula Aórtica/epidemiología , Comorbilidad , Manejo de la Enfermedad , Femenino , Salud Global , Hematoma/etiología , Mortalidad Hospitalaria , Humanos , Masculino , Persona de Mediana Edad , Dolor/etiología , Derrame Pericárdico/epidemiología , Derrame Pericárdico/etiología , Pronóstico , Pulso Arterial , Sistema de Registros , Estudios Retrospectivos , Resultado del Tratamiento
9.
Ann Vasc Surg ; 27(4): 537-45, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23535525

RESUMEN

BACKGROUND: Beta-blockers (BB) and statins (S) independently have been shown to reduce perioperative mortality and myocardial infarction (MI) in patients undergoing vascular surgery. In this study we evaluated the benefits of adding aspirin (A) to BB and S (ABBS), with/without angiotensin-converting enzyme inhibitor (ACE-I) on postoperative outcome in high-risk patients undergoing major vascular surgery. METHODS: Analysis of consecutive patients undergoing elective vascular surgery at the University of Michigan Cardiovascular Center was performed. Univariate and multivariate analyses were done using cardiac risk index [Revised Cardiac Risk Index (RCRI), coronary artery disease (CAD), insulin-dependent diabetes mellitus (IDDM), cerebral vascular disease, renal dysfunction, congestive heart failure, and major surgery]; pulmonary disease; and A, BB, S (ABBS)±ACE-I use. Baseline clinical characteristics and medication were adjusted using propensity scores. Endpoints were bleeding, 30-day MI, stroke, and 12-month mortality. RESULTS: Between 2003 and 2010, 4,149 arterial procedures were performed, 819 of which were risk stratified as RCRI≥3. The incidence of MI was 3-fold lower (2.5% vs. 7.8%, OR 0.31, 95% CI 0.15-0.61, P=0.001) in ABBS±ACE-I (n=513) as compared with non-ABBS±ACE-I (n=306). The 12-month mortality was 8-fold lower in ABBS±ACE-I as compared non-ABBS±ACE-I (5.9% vs. 37.5%, HR 0.13, 95% CI 0.08-0.20, P<0.0001). After adjustment for the propensity to use various therapies, A (HR 0.35, 95% CI 0.24-0.53, P<0.0001), BB (HR 0.65, 95% CI 0.43-1.0, P=0.05), and S (HR 0.36, 95% CI 0.25-0.53, P<0.0001) remained associated with improved 12-month survival. ACE-I use (HR 0.80, 95% CI 0.54-1.19, P=0.27) was not predictive. Aspirin did not predict severe/moderate bleeding. CONCLUSIONS: In high-risk patients undergoing major vascular surgery, ABBS therapy has superior 30-day and 12-month risk reduction benefits for MI, stroke, and mortality as compared with A, BB, or S independently. ACE-I did not demonstrate additional risk-reduction benefits.


Asunto(s)
Antagonistas Adrenérgicos beta/administración & dosificación , Aspirina/administración & dosificación , Inhibidores de Hidroximetilglutaril-CoA Reductasas/administración & dosificación , Complicaciones Posoperatorias/prevención & control , Cuidados Preoperatorios/métodos , Enfermedades Vasculares/cirugía , Procedimientos Quirúrgicos Vasculares/métodos , Anciano , Relación Dosis-Respuesta a Droga , Quimioterapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Masculino , Michigan/epidemiología , Inhibidores de Agregación Plaquetaria/administración & dosificación , Complicaciones Posoperatorias/epidemiología , Pronóstico , Estudios Retrospectivos , Medición de Riesgo/métodos , Factores de Riesgo , Tasa de Supervivencia/tendencias
10.
Circulation ; 124(18): 1911-8, 2011 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-21969019

RESUMEN

BACKGROUND: In acute aortic dissection, delays exist between presentation and diagnosis and, once diagnosed, definitive treatment. This study aimed to define the variables associated with these delays. METHODS AND RESULTS: Acute aortic dissection patients enrolled in the International Registry of Acute Aortic Dissection (IRAD) between 1996 and January 2007 were evaluated for factors contributing to delays in presentation to diagnosis and in diagnosis to surgery. Multiple linear regression was performed to determine relative delay time ratios (DTRs) for individual correlates. The median time from arrival at the emergency department to diagnosis was 4.3 hours (quartile 1-3, 1.5-24 hours; n=894 patients) and from diagnosis to surgery was 4.3 hours (quartile 1-3, 2.4-24 hours; n=751). Delays in acute aortic dissection diagnosis occurred in female patients; those with atypical symptoms that were not abrupt or did not include chest, back, or any pain; patients with an absence of pulse deficit or hypotension; or those who initially presented to a nontertiary care hospital (all P<0.05). The largest relative DTRs were for fever (DTR=5.11; P<0.001) and transfer from nontertiary hospital (DTR=3.34; P<0.001). Delay in time from diagnosis to surgery was associated with a history of previous cardiac surgery, presentation without abrupt or any pain, and initial presentation to a nontertiary care hospital (all P<0.001). The strongest factors associated with operative delay were prolonged time from presentation to diagnosis (DTR=1.35; P<0.001), race other than white (DTR=2.25; P<0.001), and history of coronary artery bypass surgery (DTR=2.81; P<0.001). CONCLUSIONS: Improved physician awareness of atypical presentations and prompt transport of acute aortic dissection patients could reduce crucial time variables.


Asunto(s)
Aneurisma de la Aorta/diagnóstico , Aneurisma de la Aorta/cirugía , Disección Aórtica/diagnóstico , Disección Aórtica/cirugía , Diagnóstico Tardío/estadística & datos numéricos , Sistema de Registros/estadística & datos numéricos , Enfermedad Aguda , Anciano , Enfermedad Crítica , Diagnóstico Diferencial , Servicios Médicos de Urgencia/estadística & datos numéricos , Femenino , Cardiopatías/diagnóstico , Humanos , Modelos Lineales , Masculino , Persona de Mediana Edad
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