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1.
J Appl Microbiol ; 112(4): 782-92, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22292528

RESUMEN

AIMS: The early molecular events underlying the elicitation of plant defence reactions by Gram-positive bacteria are relatively unknown. In plants, calcium and reactive oxygen species are commonly involved as cellular messengers of a wide range of biotic stimuli from pathogenic to symbiotic bacteria. In the present work, we checked whether nonpathogenic Streptomyces sp. strains could induce early signalling events leading to defence responses in BY2 tobacco cell suspensions. METHODS AND RESULTS: We have demonstrated that nonpathogenic Streptomyces sp. OE7 strain induced a cytosolic Ca(2+) increase and a biphasic oxidative burst in the upstream signalling events, leading to defence responses in BY2 tobacco cell suspensions. Streptomyces sp. OE7 also elicited delayed intracellular free scopoletin production and programmed cell death. In agreement with scopoletin production, OE7 induced accumulation of PAL transcripts and increased accumulation of transcripts of EREBP1 and AOX genes that are known to be regulated by the jasmonate/ethylene pathway. Transcript levels of PR1b and NIMIN2α, both salicylic acid pathway-linked genes, were not modified. Moreover, Streptomyces sp. OE7 culture filtrates could reduce Pectobacterium carotovorum- and Pectobacterium atrosepticum-induced death of BY2 cells and soft rot on potato slices. CONCLUSIONS: New insights are thus provided into the interaction mechanisms between Streptomyces sp. and plants; Streptomyces sp. could be sensed by plant cells, and through cytosolic Ca(2+) changes and the generation of reactive oxygen species, defence responses were induced. SIGNIFICANCE AND IMPACT OF THE STUDY: These induced defence responses appeared to participate in attenuating Pectobacterium-induced diseases in plants. Thus, Streptomyces sp. OE7 could be a biocontrol agent against Pectobacterium sp.


Asunto(s)
Calcio/metabolismo , Nicotiana/metabolismo , Nicotiana/microbiología , Especies Reactivas de Oxígeno/metabolismo , Apoptosis , Pectobacterium/metabolismo , Pectobacterium carotovorum/metabolismo , Células Vegetales/inmunología , Células Vegetales/metabolismo , Células Vegetales/microbiología , Escopoletina/metabolismo , Transducción de Señal , Solanum tuberosum/metabolismo , Streptomyces/metabolismo , Streptomyces/patogenicidad , Nicotiana/citología , Nicotiana/inmunología
2.
Int J Cardiovasc Imaging ; 38(8): 1795-1805, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37726523

RESUMEN

Tako-tsubo cardiomyopathy (TTC) is characterized by left ventricular (LV) systolic dysfunction with transient wall motion abnormalities (WMA). However, whether systolic performance fully recovers is unclear. Non-invasive myocardial work (MW) is a new tool to assess the LV performance, never described in this setting. To assess MW in apical TTC. Fifty patients with the apical variant TTC (77 ± 10 years, 47 women) were enrolled and underwent a transthoracic echocardiography within 24 h of admission and a median of 36 days at follow-up (FU). Constructive work (CW), wasted work (WW), MW index (MWI) and efficiency (MWE) were derived from a strain- pressure loop obtained from non-invasive brachial blood pressure and 2D strain. Hospital complications (HC) were defined as heart failure, LV apical thrombus, and ventricular arrhythmia. A control group of 24 matched-subjects was used. Myocardial work improved significantly between the acute phase and follow-up (global, and all apical and middle segments for all indices, all, p < 0.01; and some basal segments for MWI and CW, all p < 0.05). The degree of impairment of MW followed an apical-basal gradient (worse in apical segments), which inverted at follow-up. Furthermore, in TTC, global CW and MWI were significantly impaired in patients with HC (n = 10, all p < 0.05). At follow-up, global and regional MW remained significantly reduced by comparison to the control group (CW, MWI, MWE, WW, all p < 0.01), despite similar hemodynamics, LVEF and 2D-strain (all, p = NS). Myocardial work is transiently altered in apical TTC and significantly associated to HC. Despite total recovery of WMA, subtle dysfunction of myocardial performance persists at FU.


Asunto(s)
Insuficiencia Cardíaca , Cardiomiopatía de Takotsubo , Humanos , Femenino , Cardiomiopatía de Takotsubo/diagnóstico por imagen , Valor Predictivo de las Pruebas , Miocardio , Ecocardiografía
3.
Ann Cardiol Angeiol (Paris) ; 70(6): 461-470, 2021 Dec.
Artículo en Francés | MEDLINE | ID: mdl-34629172

RESUMEN

We have to distinguish between non-modifiable risk factors such as age, gender, heredity, (we cannot fight against these enemies), and modifiable risk factors (avoidable) such as hypertension, smoking, diabetes, and dyslipidemia. Environmental factors, bad diet, sedentary lifestyle, and smoking are the basis of these risk factors. Cardiovascular disease due to these risk factors is clinically silent during a given period, then symptoms occur which can eventually lead to death. Nine risk factors explain the occurrence of 90 % of myocardial infarctions (MI), their correction avoid 80 % of MI. Despite the presence of several studies proving that secondary prevention reduces coronary mortality, the management of cardiovascular risk factors is not optimal.


Asunto(s)
Dislipidemias , Hipertensión , Infarto del Miocardio , Dislipidemias/epidemiología , Humanos , Hipertensión/epidemiología , Infarto del Miocardio/epidemiología , Factores de Riesgo , Prevención Secundaria
4.
Ann Cardiol Angeiol (Paris) ; 69(6): 424-429, 2020 Dec.
Artículo en Francés | MEDLINE | ID: mdl-33092786

RESUMEN

Patients undergoing cardiac surgery are older, have complex pathologies and several comorbidities, but need to leave the hospital quickly! Therefore, the mission of cardiac rehabilitation centres has substantially changed. Indeed, if 15 to 25% of patients undergoing cardiac surgery will have a postoperative complication requiring a hospital management (infectious, pericardial, rhythmic, neurologic, pulmonary, digestive, etc.), more than 2/3 of these acute events could be managed by cardiac rehabilitation centres for a lower cost. Therefore, the quickest the patient is transferred to a cardiac rehabilitation centre, the easier the cardiac surgery centre could manage his beds. Infectious complications are the most dreadful, particularly mediastinitis.


Asunto(s)
Instituciones Cardiológicas , Procedimientos Quirúrgicos Cardíacos/efectos adversos , Taponamiento Cardíaco , Complicaciones Posoperatorias/terapia , Anciano , Taponamiento Cardíaco/diagnóstico por imagen , Taponamiento Cardíaco/etiología , Taponamiento Cardíaco/terapia , Cicatriz/complicaciones , Cicatriz/terapia , Humanos , Mediastinitis/etiología , Mediastinitis/microbiología , Mediastinitis/terapia , Transferencia de Pacientes , Complicaciones Posoperatorias/etiología , Factores de Tiempo
5.
Int J Cardiovasc Imaging ; 36(2): 299-307, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31673849

RESUMEN

Tako-tsubo cardiomyopathy (TTC) is characterized by the presence of transient left ventricular (LV) dysfunction. Whether left atrial (LA) function is also impaired in this setting is unclear. To assess prospectively LA peak systolic longitudinal strain (LAS) by two-dimensional strain at the acute phase of TTC and after recovery and its association with in-hospital complications. 40 patients with typical TTC (mean age 79.5 ± 10 years) underwent transthoracic-Doppler echocardiography at the acute phase and at follow-up (32 ± 18 days later), including the measurement of the LAS (mean of maximal strain from the 4-2 chamber views). A control group of 15 patients (75 ± 7 years, 13 women) without overt cardiovascular disease served as a comparative group. In-hospital complication was a composite of death, heart failure, cardiogenic shock, LV thrombus, and sustained ventricular arrhythmia. In the TTC group, LAS improved significantly between the two examinations from 15 ± 5.5% to 27 ± 8% (p < 0.01) whereas LA volume did not change (p = NS). In the control group LAS was 30 ± 4% (p < 0.01 vs. TTC acute phase, p = NS vs. TTC follow-up). In TTC, at the acute phase LAS was independently correlated to LV global longitudinal strain (LVGLS), and after recovery to E/e', and the change of LAS was independently correlated to the change of the LVGLS (all, p < 0.01). Furthermore LAS was independently correlated to in-hospital complications (p < 0.01). LA function (reservoir) is transiently impaired in TTC and associated to in-hospital complications. Furthermore, the improvement of LAS parallel the dynamic improvement of LVGLS suggests that TTC induces a transient global left heart dysfunction.


Asunto(s)
Función del Atrio Izquierdo , Ecocardiografía Doppler , Atrios Cardíacos/diagnóstico por imagen , Cardiomiopatía de Takotsubo/diagnóstico por imagen , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Progresión de la Enfermedad , Femenino , Atrios Cardíacos/fisiopatología , Mortalidad Hospitalaria , Hospitalización , Humanos , Masculino , Valor Predictivo de las Pruebas , Estudios Prospectivos , Cardiomiopatía de Takotsubo/complicaciones , Cardiomiopatía de Takotsubo/mortalidad , Cardiomiopatía de Takotsubo/fisiopatología , Función Ventricular Izquierda
6.
J Exp Bot ; 59(15): 4259-70, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-19015217

RESUMEN

The pathogenicity of various Streptomyces scabies isolates involved in potato scab disease was correlated with the production of thaxtomin A. Since calcium is known as an essential second messenger associated with pathogen-induced plant responses and cell death, it was investigated whether thaxtomin A could induce a Ca2+ influx related to cell death and to other putative plant responses using Arabidopsis thaliana suspension cells, which is a convenient model to study plant-microbe interactions. A. thaliana cells were treated with micromolar concentrations of thaxtomin A. Cell death was quantified and ion flux variations were analysed from electrophysiological measurements with the apoaequorin Ca2+ reporter protein and by external pH measurement. Involvement of anion and calcium channels in signal transduction leading to programmed cell death was determined by using specific inhibitors. These data suggest that this toxin induces a rapid Ca2+ influx and cell death in A. thaliana cell suspensions. Moreover, these data provide strong evidence that the Ca2+ influx induced by thaxtomin A is necessary to achieve this cell death and is a prerequisite to early thaxtomin A-induced responses: anion current increase, alkalization of the external medium, and the expression of PAL1 coding for a key enzyme of the phenylpropanoid pathway.


Asunto(s)
Arabidopsis/efectos de los fármacos , Arabidopsis/fisiología , Calcio/metabolismo , Indoles/farmacología , Piperazinas/farmacología , Arabidopsis/genética , Transporte Biológico , Muerte Celular/efectos de los fármacos , Membrana Celular/efectos de los fármacos , Membrana Celular/genética , Membrana Celular/metabolismo , Canales Iónicos/genética , Canales Iónicos/metabolismo , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Transducción de Señal/efectos de los fármacos , Streptomyces/química , Streptomyces/metabolismo
7.
Ann Cardiol Angeiol (Paris) ; 67(6): 493-501, 2018 Dec.
Artículo en Francés | MEDLINE | ID: mdl-30342832

RESUMEN

According to "OMS" we are old at age 65. Because of the ageing population (life expectancy has increased in Europe) and medical progress, more and more old patients are addressed to cardiac rehabilitation centers. Ageing is a physiological process which varies between individuals, and in the same person organ ageing also differs. Old patient has usually several pathological diseases. Because old patient has restricted functional reserve, acute illness could get him closer to the decompensation area. Complications are more frequent in ageing people, and often need a specific initial treatment which delays rehabilitation. Rehabilitation program of old non-disabled patient is not different from that addressed to youngers. The main objective for dependent people is to restore the ability to perform activities of daily living. Correction of vascular risk factors and therapeutic education are also valuable in elderly. For patients with difficulty to remember or to understand instructions, family help is valuable when possible. The benefit of the rehabilitation in the elderly is demonstrated by several studies.


Asunto(s)
Envejecimiento/fisiología , Rehabilitación Cardiaca , Enfermedades Cardiovasculares/fisiopatología , Enfermedades Cardiovasculares/terapia , Anciano , Causas de Muerte , Ejercicio Físico/fisiología , Humanos , Esperanza de Vida
8.
Int J Cardiovasc Imaging ; 33(7): 999-1007, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27752796

RESUMEN

To test the usefulness of non-invasive coronary flow reserve (CFR) by transthoracic Doppler echocardiography by comparison to invasive fractional flow reserve (FFR) and instantaneous wave-free ratio (IFR), a new vasodilator-free index of coronary stenosis severity, in patients with left anterior descending artery (LAD) stenosis of intermediate severity (IS) and stable coronary artery disease. 94 consecutive patients (mean age 68 ± 10 years) with angiographic LAD stenosis of IS (50-70 % diameter stenosis), were prospectively studied. IFR was calculated as a trans-lesion pressure ratio during the wave-free period in diastole; FFR as distal pressure divided by mean aortic pressure during maximal hyperemia (using 180 µg intracoronary adenosine); and CFR as hyperemic peak LAD flow velocity divided by baseline flow velocity using intravenous adenosine (140 µg/kg/min over 2 min). The mean values of IFR, FFR, and CFR were 0.88 ± 0.07, 0.81 ± 0.09, and 2.4 ± 0.6 respectively. A significant correlation was found between CFR and FFR (r = 0. 68), FFR and IFR (r = 0.6), and between CFR and IFR (r = 0.5) (all, p < 0.01). Using a ROC curve analysis, the best cut-off to detect a significant lesion based on FFR assessment (FFR ≤ 0.8, n = 31) was IFR ≤ 0.88 with a sensitivity (Se) of 74 %, specificity (Sp) of 73 %, AUC 0.81 ± 0.04, accuracy 72 %; and CFR ≤ 2 with a Se = 77 %, Sp = 89 %, AUC 0.88 ± 0.04, accuracy 85 % (all, p < 0.001). In stable patients with LAD stenosis of IS, non-invasive CFR is a useful tool to detect a significant lesion based on FFR. Furthermore, there was a better correlation between CFR and FFR than between CFR and IFR, and a trend to a better diagnostic performance for CFR versus IFR.


Asunto(s)
Cateterismo Cardíaco , Estenosis Coronaria/diagnóstico por imagen , Vasos Coronarios/diagnóstico por imagen , Ecocardiografía Doppler , Reserva del Flujo Fraccional Miocárdico , Anciano , Área Bajo la Curva , Velocidad del Flujo Sanguíneo , Estenosis Coronaria/fisiopatología , Vasos Coronarios/fisiopatología , Femenino , Humanos , Hiperemia/fisiopatología , Interpretación de Imagen Asistida por Computador , Masculino , Persona de Mediana Edad , Variaciones Dependientes del Observador , Valor Predictivo de las Pruebas , Pronóstico , Estudios Prospectivos , Curva ROC , Reproducibilidad de los Resultados , Índice de Severidad de la Enfermedad , Procesamiento de Señales Asistido por Computador
9.
Ann Cardiol Angeiol (Paris) ; 65(5): 363-365, 2016 Nov.
Artículo en Francés | MEDLINE | ID: mdl-27427466

RESUMEN

Paradoxical embolism is rarely demonstrated, often suggested, and the diagnosis has been largely presumptive in most cases. The patent foramen ovale (PFO) is an important predisposing anatomic factor for such a complication. We describe a case where a voluminous thrombus straddling the PFO was diagnosed by echocardiography including the 3D modality, in the setting of acute massive pulmonary embolism. The treatment is not codified in this setting, and the thrombus was successfully removed by surgery, associated with PFO closure, and anticoagulation.


Asunto(s)
Ecocardiografía Tridimensional , Ecocardiografía Transesofágica , Embolia Paradójica/diagnóstico por imagen , Embolia Paradójica/cirugía , Foramen Oval Permeable/diagnóstico por imagen , Foramen Oval Permeable/cirugía , Embolia Pulmonar/diagnóstico por imagen , Embolia Pulmonar/cirugía , Trombosis/diagnóstico por imagen , Trombosis/cirugía , Anticoagulantes/administración & dosificación , Terapia Combinada , Femenino , Humanos , Persona de Mediana Edad , Factores de Riesgo
10.
Ann Cardiol Angeiol (Paris) ; 65(6): 462-467, 2016 Dec.
Artículo en Francés | MEDLINE | ID: mdl-27817849

RESUMEN

Coronary artery disease (CAD) occurs later in life in women when compared to men (10 years later). The FAST-MI study has shown that the profile of women with CAD has changed in the past 15 years, they are younger, more obese, and usually smokers. Whatever the age at which CAD occurs in women, the prognosis tends to be worse than in men, despite a higher frequency of acute coronary syndrome (ACS) with angiographically normal coronary arteries in women. In women without significant lesion at coronary angiography, the WISE study has shown abnormalities of the coronary vasomotricy. Despite its beneficial effect on morbidity and mortality, cardiac rehabilitation is underused particularly in women. Indeed, several factors do not encourage a woman to follow a cardiac rehabilitation program, even after an ACS. These factors may be cultural, domestic, familial, orthopedic, or even the fear of exercising. Therefore, physicians have to be particularly convincing in women, in order to have them participating in rehabilitation programs. Physical capacity is lower in women when compared to men. However, the weaker the physical capacity, the better the benefit of cardiac rehabilitation. Physical endurance training continuously or in interval, associated to muscle strengthening can improve the physical capacity in women. Vascular risk factors correction is also an important step for the management of women with CAD. Therapeutic education and several available workshops help women to better understand their disease and to improve their self-management when they return home. Anxiety, depression, and sexual dysfunction frequently deteriorate the quality of life of our patients. Therefore, psychological management is also essential in our departments.


Asunto(s)
Rehabilitación Cardiaca/métodos , Enfermedad de la Arteria Coronaria/rehabilitación , Síndrome Coronario Agudo/diagnóstico , Síndrome Coronario Agudo/rehabilitación , Angiografía Coronaria , Enfermedad de la Arteria Coronaria/diagnóstico , Femenino , Humanos , Masculino , Infarto del Miocardio/diagnóstico , Infarto del Miocardio/rehabilitación , Educación del Paciente como Asunto , Pronóstico , Factores de Riesgo , Factores Sexuales , Resultado del Tratamiento
11.
Ann Cardiol Angeiol (Paris) ; 65(5): 381, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27968775

RESUMEN

BACKGROUND: It is unclear whether apical rotation (Ar), which in normal setting represents the dominant contributions to LV twist by comparison to basal rotation (Br), predicts viability in acute anterior myocardial infarction (AMI). Our objective was to test the usefulness of Ar as a simple index to predict LV recovery after AMI. METHODS: Fourty-five consecutive patients (mean age 60±14 years, mean LVEF 44±7%) with first AMI treated successfully by primary angioplasty underwent prospectively a comprehensive transthoracic-Doppler echocardiography including analysis of Ar, Br, and LV twist by 2-dimensional speckle tracking, using a basal and apical short axis-views, within 24h after angioplasty and 3-6months later. Recovery was defined as: - the normalization of the wall motion of more than 50% of initial abnormal segments (R1) and; - absolute improvement of LVEF≥10% (R2). RESULTS: A better correlation was found between Ar and LV twist at each stage of the disease than between Br and LV twist (acute phase, R=0.77 vs. R=0.35; follow-up, R=0.9 vs. R=0.3 [all, P<0.001 for Ar, and all, P≤0.05 for Br]). Furthermore, a better correlation was found between Ar and follow-up LVEF (R=0.57), wall motion score index (R=0.44), and global longitudinal strain (R=0.54) (all, P<0.001) than between LV twist and the same parameters (R=0.39; R=0.32; R=0.32 respectively, all P<0.05). (For Br, all, P=NS). Ar as well as LV twist were significantly associated with recovery (all, P<0.01) with an area under the curve (AUC) higher for the former than for the latter (R1, N=18: AUC-Ar=0.81 and AUC-LV twist=0.69, P=0.05; R2, N=19: AUC-Ar=0.82, AUC-LV twist=0.75, P=0.1). In multivariate analysis, Ar remained an independent predictor of recovery R1 and R2 instead of LV twist (all, P≤0.01). Using a ROC curve analysis, the best cut-off of Ar to predict recovery R2 was 6.5°, with Se=77% Sp=85%, P<0.001. CONCLUSION: Apical rotation is an independent predictor of segmental and global LV recovery after anterior acute anterior myocardial infarction treated successfully by primary angioplasty.

12.
Ann Cardiol Angeiol (Paris) ; 65(5): 380-381, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27968774

RESUMEN

Assessment of the functional significance of left anterior descending coronary artery (LAD) stenosis of intermediate severity is challenging and often based on fractional flow reserve (FFR). The instantaneous wave-free ratio (IFR), a new vasodilator-free index of coronary stenosis severity, and non-invasive coronary flow reserve (CFR) by transthoracic Doppler echocardiography are also potentially useful. A direct comparison of FFR, IFR, and non-invasive CFR has never been performed. Our objective was to test the usefulness of non-invasive CFR by comparison to invasive FFR and IFR in patients with LAD stenosis of angiographic intermediate severity and stable coronary artery disease. METHODS: Ninety-four stable consecutive patients (mean age, 68±10years; 19 women) with angiographic proximal or mid LAD stenosis of intermediate severity (40-70% diameter stenosis on quantitative coronary angiography), were prospectively studied. They underwent IFR that was calculated as a trans-lesion pressure ratio during a specific period of baseline diastole, FFR with intracoronary bolus adenosine (180µg), and CFR using intravenous adenosine (140µg/kg/min over 2min) in the distal part of the LAD, the same day. CFR was defined as hyperemic peak diastolic LAD flow velocity divided by baseline flow velocity and FFR as distal pressure divided by mean aortic pressure during maximal hyperemia. RESULTS: The mean values of IFR, FFR, and CFR were 0.88±0.07, 0.81±0.09, and 2.4±0.6 respectively. A significant correlation was found between CFR and FFR (R=0.63, curvilinear relationship), FFR and IFR (R=0.6, linear relationship), and between CFR and IFR (R=0.5) (all, P<0.01). Using a ROC curve analysis, the best cut-off to detect a significant lesion based on FFR assessment (FFR≤0.8, N=31) was IFR≤0.88 with a sensitivity (Se) of 74%, specificity (Sp) of 73%, AUC 0.81±0.04; and CFR≤2 with a Se=77%, Sp=89%, AUC 0.88±0.04, (all, P<0.001). Based on these cut-offs, discordant results between CFR and FFR were observed in 14 cases (agreement 85%), between CFR and IFR in 26 cases (agreement 72%), and between IFR and FFR in 26 cases (agreement 72%). CONCLUSION: In stable patients with LAD stenosis of intermediate severity, non-invasive CFR is a useful tool to detect a significant lesion based on FFR. Furthermore, there was a better correlation and agreement between CFR and FFR than with IFR.

13.
Circulation ; 104(12 Suppl 1): I8-11, 2001 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-11568021

RESUMEN

BACKGROUND: Mitral valve repair is considered the gold standard in surgery of degenerative mitral valve insufficiency (MVI), but the long-term results (>20 years) are unknown. METHODS AND RESULTS: We reviewed the first 162 consecutive patients who underwent mitral valve repair between 1970 and 1984 for MVI due to nonrheumatic disease. The cause of MVI was degenerative in 146 patients (90%) and bacterial endocarditis in 16 patients (10%). MVI was isolated or, in 18 cases, associated with tricuspid insufficiency. The mean age of the 162 patients (104 men and 58 women) was 56+/-10 years (age range 22 to 77 years). New York Heart Association functional class was I, II, III, and IV in 2%, 39%, 52%, and 7% of patients, respectively. The mean cardiothoracic ratio was 0.58+/-0.07 (0.4 to 0.8), and 72 (45%) patients had atrial fibrillation. Valve analysis showed that the main mechanism of MVI was type II Carpentier's functional classification in 152 patients. The leaflet prolapse involved the posterior leaflet in 93 patients, the anterior leaflet in 28 patients, and both leaflets in 31 patients. Surgical technique included a Carpentier's ring annuloplasty in all cases, a valve resection in 126 patients, and shortening or transposition of chordae in 49 patients. During the first postoperative month, there were 3 deaths (1.9%) and 3 reoperations (2 valve replacements and 1 repeat repair [1.9%]). Six patients were lost to follow-up. The remaining 151 patients with mitral valve repair were followed during a median of 17 years (range 1 to 29 years; 2273 patient-years). The 20-year Kaplan-Meier survival rate was 48% (95% CI 40% to 57%), which is similar to the survival rate for a normal population with the same age structure. The 20-year rates were 19.3% (95% CI 11% to 27%) for cardiac death and 26% (95% CI 17% to 35%) for cardiac morbidity/mortality (including death from a cardiac cause, stroke, and reoperation). During the 20 years of follow-up, 7 patients were underwent surgery at 3, 7, 7, 8, 8, 10, or 12 years after the initial operation. Valve replacement was carried out in 5 patients, and repeat repair was carried out in 2 patients. At the end of the study, 65 patients remained alive (median follow-up 19 years). Their median age was 76 years (age range 41 to 95 years). All except 1 were in New York Heart Association functional class I/II. CONCLUSIONS: Mitral valve repair using Carpentier's technique in patients with nonrheumatic MVI provides excellent long-term results with a mortality rate similar to that of the general population and a very low incidence of reoperation.


Asunto(s)
Procedimientos Quirúrgicos Cardíacos/estadística & datos numéricos , Enfermedades de las Válvulas Cardíacas/cirugía , Válvula Mitral/cirugía , Adulto , Anciano , Procedimientos Quirúrgicos Cardíacos/efectos adversos , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Francia/epidemiología , Implantación de Prótesis de Válvulas Cardíacas/estadística & datos numéricos , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Insuficiencia de la Válvula Mitral/cirugía , Complicaciones Posoperatorias/epidemiología , Reoperación/estadística & datos numéricos , Estudios Retrospectivos , Tasa de Supervivencia , Tiempo
15.
Arch Mal Coeur Vaiss ; 98 Spec No 3: 29-34, 2005 Jun.
Artículo en Francés | MEDLINE | ID: mdl-16007830

RESUMEN

The measurement of coronary reserve flow by transthoracic echocardiography of the left anterior descending and the posterior interventricular artery is a new non-invasive reproducible and attractive method which can be performed at the bedside with the proviso of a specific learning curve. The potential value is great: detection of significant (> 70%) coronary stenosis, coronary occlusion, post-angioplasty follow-up, evaluation of intermediate stenoses, coupling with stress echo, reperfusion studies, no reflow detection, post-infarction viability, coronary bypass patency and studies of microcirculation.


Asunto(s)
Circulación Coronaria , Vasos Coronarios/diagnóstico por imagen , Puente de Arteria Coronaria , Estenosis Coronaria/diagnóstico por imagen , Ecocardiografía , Humanos , Infarto del Miocardio/diagnóstico por imagen
16.
Ann Cardiol Angeiol (Paris) ; 64(5): 385-9, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26482629

RESUMEN

We present a case which developed a typical tako-tsubo-like cardiomyopathy (TTC) during dobutamine stress echocardiography (DSE). Its originality is related to several findings, which have never been described simultaneously in the same patient. This 63-year-old woman with normal coronary angiography and no evidence of coronary vasospasm had a biphasic response to DSE, a finding which usually occurs in coronary artery disease. Moreover, the symmetric extensive wall motion abnormalities (WMA) occurred simultaneously with the development of a systolic anterior motion of the mitral valve (SAM) and left ventricular obstruction, and was clinically asymptomatic. Although in TTC the stunning usually occurs for several days, WMA and SAM resolved within few minutes after cessation of dobutamine and administration of a beta-blocker. And finally, exercise echo performed at the same target heart rate few days later did not induce neither a SAM nor WMA, which suggests that left ventricular obstruction could have played a role in the pathogenesis of this case by supply-demand mismatch. Concomitant coronary microvascular dysfunction was also demonstrated by a reduction of the non-invasive coronary flow reserve in the distal part of the left anterior descending artery.


Asunto(s)
Válvula Mitral/fisiopatología , Cardiomiopatía de Takotsubo/fisiopatología , Ecocardiografía de Estrés , Femenino , Humanos , Persona de Mediana Edad , Válvula Mitral/diagnóstico por imagen , Sístole , Cardiomiopatía de Takotsubo/diagnóstico por imagen
17.
Arch Mal Coeur Vaiss ; 94(2): 103-7, 2001 Feb.
Artículo en Francés | MEDLINE | ID: mdl-11265547

RESUMEN

Aortic stenosis is known to modify initial upstroke time (IUT) of velocity in peripheral arteries and carotid velocities. The authors conducted a prospective study in 30 patients scheduled for aortic valve replacement for aortic stenosis. The goal was to establish postoperative correction of carotid flow disorders. In the preoperative period, a positive correlation (p < 0.01) was observed between IUT and mean pressure gradient, and a negative correlation (p < 0.02) between IUT and aortic valve area. Post-operatively, the authors observed a large decrease (p < 0.0001) of IUT, and higher (p < 0.05) systolic peaks of velocity (PSV) in all studied arteries. In this article, the authors confirmed the few previous studies which described preoperative velocity modifications in aortic stenosis population, but they also described for the first time their postoperative correction. Therefore, identifying these patterns of peripheral circulatory alterations is important and underestimation of carotid stenosis, currently estimated preoperatively, must be avoided.


Asunto(s)
Estenosis de la Válvula Aórtica/fisiopatología , Estenosis de la Válvula Aórtica/cirugía , Válvula Aórtica , Arteria Carótida Común/fisiopatología , Implantación de Prótesis de Válvulas Cardíacas , Adulto , Anciano , Anciano de 80 o más Años , Velocidad del Flujo Sanguíneo , Arteria Carótida Común/diagnóstico por imagen , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Flujo Sanguíneo Regional , Análisis de Regresión , Sístole , Resultado del Tratamiento , Ultrasonografía
18.
Arch Mal Coeur Vaiss ; 93(7): 849-55, 2000 Jul.
Artículo en Francés | MEDLINE | ID: mdl-10975037

RESUMEN

Aortomyoplasty is a surgical technique of constructing a neo-ventricle on the ascending or descending aorta with the latissimus dorsi muscle. This is electrically stimulated to contract during diastole, thereby creating a system of chronic, haemo-compatible aortic pumping. Long-term experimental studies have shown increases in cardiac output (from 3.6 to 5.5 l/min), decreases in peripheral resistances (from 1574 to 1134 dyne.sec.cm-5) and increases in indices of subendocardial viability (DPTI/TTI: 1.1 to 1.4). These experimental studies have been confirmed by the initial clinical results. To date, world experience includes thirty-six patients. With cardiomyoplasty, aortomyoplasty is a new arm in the therapeutic arsenal against severe cardiac failure by providing a new system of chronic circulatory assistance which is implantable and biocompatible.


Asunto(s)
Aorta Torácica/cirugía , Circulación Asistida/métodos , Insuficiencia Cardíaca/cirugía , Ventrículos Cardíacos/cirugía , Estimulación Eléctrica , Corazón Auxiliar , Humanos , Músculo Esquelético/patología , Músculo Esquelético/cirugía , Contracción Miocárdica
19.
Arch Mal Coeur Vaiss ; 94(12): 1419-22, 2001 Dec.
Artículo en Francés | MEDLINE | ID: mdl-11828929

RESUMEN

Lyme's disease is a multi-system condition due to infection with a spirochete (Borrelia Burgdorferi), transmitted by a tick. Cardiac involvement, which is not systematic, usually presents with transient atrioventricular block of varying degree. The authors describe an unusual presentation of the cardiac involvement of Lyme's disease with chest pain resembling an acute coronary syndrome in a 32 year old man. The characteristic skin lesion (erythema migrans), the positivity of IgM serology, the myocardial scintigraphic results and the negativity of the work-up of other causes of this pain led to a diagnosis of myocarditis, the outcome of which was favourable with treatment by amoxycillin (3 g/day, orally).


Asunto(s)
Dolor en el Pecho/etiología , Enfermedad de Lyme/complicaciones , Enfermedad de Lyme/diagnóstico , Infarto del Miocardio/diagnóstico , Miocarditis/etiología , Adulto , Amoxicilina/uso terapéutico , Diagnóstico Diferencial , Humanos , Masculino , Miocarditis/tratamiento farmacológico , Miocarditis/microbiología , Penicilinas/uso terapéutico , Resultado del Tratamiento
20.
Arch Mal Coeur Vaiss ; 94(4): 291-4, 2001 Apr.
Artículo en Francés | MEDLINE | ID: mdl-11387936

RESUMEN

The authors report sequential association during the same general anaesthetic of coronary bypass surgery on the beating heart and surgery of an abdominal aortic aneurysm. Two aorto-coronary bypass grafts were carried out without cardiopulmonary bypass using the two pediculated internal mammary arteries (without manipulation of the ascending aorta), followed, after closure of the chest and monitoring in the operating theatre for one hour, by reinstallation of the patient for treatment of an infra-renal abdominal aortic aneurysm by classical prosthetic implantation. The postoperative course was uncomplicated. Sequential management of coronary revascularisation without cardiopulmonary bypass and aortic aneurysmal lesions during the same anaesthetic provides an alternative to classical two-stage surgery in selected patients.


Asunto(s)
Aneurisma de la Aorta Abdominal/cirugía , Puente de Arteria Coronaria/métodos , Anciano , Anestesia General , Aneurisma de la Aorta Abdominal/diagnóstico por imagen , Angiografía Coronaria , Humanos , Masculino , Arterias Mamarias/trasplante , Factores de Tiempo , Resultado del Tratamiento
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