Effect of insomnia and excessive daytime sleepiness on cardiac functions in older adults.

BACKGROUND: We investigated the potential harmful effect in older adults of insomnia and excessive daytime sleepiness (EDS) on myocardial functions and electrophysiologic changes of the heart in terms of heart rate and QT intervals corrected for heart rate (QTc). METHODS: The study included 32 insomnia patients and 30 control subjects. An Insomnia Severity Index score of ≥15 indicated insomnia, while a score of <8 was accepted as the control group. The Epworth Sleepiness Scale was used to assess EDS, with a score of ≥11/24 points indicating EDS. Diastolic and systolic functions were evaluated in each patient by transthoracic two-dimensional, conventional and tissue Doppler echocardiography. Heart rate and QTc were calculated for electrophysiologic changes. RESULTS: The mean age was 73.2 ± 7.9 years, with 59.7% being female. Biventricular systolic and diastolic functions were impaired in the insomnia patients. The E' value for diastolic function was lower in the patients with insomnia than the controls (5.99 ± 1.59 vs. 6.88 ± 0.97, P = 0.053). Furthermore, values for the systolic function parameters Lateral-S (7.41 ± 1.92 vs. 9.37 ± 1.83, P < 0.001), Septal-S (6.69 ± 1.40 vs. 8.10 ± 1.30, P = 0.001), and Tricuspid-S (12.25 ± 2.00 vs. 14.37 ± 3.13, P = 0.004) were lower for insomnia patients than for controls. In the case of EDS coexistence, the heart rate and QTc values were higher than the controls (76.47 ± 7.18 vs. 71.03 ± 10.95, P = 0.001, and 413.72 ± 28.24 vs. 394.67 ± 24.47, P = 0.015, respectively). CONCLUSION: Insomnia is associated with impaired systolic-diastolic functions, independent of EDS. The co-existence of insomnia and EDS may lead to electrophysiological changes in older adults, including increased heart rate and longer QTc.

Multiple Anterior Mitral Valve Perforation After Deep Transfemoral Aortic Valve Implantation

Abstract Transcatheter aortic valve implantation (TAVI) is an alternative for high-risk aortic valve replacement. There are limited data related to the late complications of TAVI. Deep aortic prosthetic valve implantation can cause direct erosive perforation of anterior mitral leaflet or erosive endothelial lesion which predisposes the tissue to infective endocarditis. Our report emphasizes anterior mitral leaflet perforation after TAVI, which may be seen especially in patients exposed to sepsis.

Multiple Anterior Mitral Valve Perforation After Deep Transfemoral Aortic Valve Implantation.

Transcatheter aortic valve implantation (TAVI) is an alternative for high-risk aortic valve replacement. There are limited data related to the late complications of TAVI. Deep aortic prosthetic valve implantation can cause direct erosive perforation of anterior mitral leaflet or erosive endothelial lesion which predisposes the tissue to infective endocarditis. Our report emphasizes anterior mitral leaflet perforation after TAVI, which may be seen especially in patients exposed to sepsis.

Nonalcoholic fatty liver disease as a multi-systemic disease.

Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease. NAFLD includes a wide spectrum of liver conditions ranging from simple steatosis to nonalcoholic steatohepatitis and advanced hepatic fibrosis. NAFLD has been recognized as a hepatic manifestation of metabolic syndrome linked with insulin resistance. NAFLD should be considered not only a liver specific disease but also an early mediator of systemic diseases. Therefore, NAFLD is usually associated with cardiovascular disease, chronic kidney disease, type 2 diabetes, obesity, and dyslipidemia. NAFLD is highly prevalent in the general population and is associated with increased cardiovascular morbidity and mortality. The underlying mechanisms and pathogenesis of NAFLD with regard to other medical disorders are not yet fully understood. This review focuses on pathogenesis of NAFLD and its relation with other systemic diseases.

False Lumen Catheterization in a Patient Who Has Type A Aortic Dissection That Mimics Acute Inferior Myocardial Infarction: A Case Report.

We report a 61-year-old patient who suffered from a type A aortic dissection that mimicked an acute inferior myocardial infarction. During a routine cardiac catheterization procedure, diagnostic catheters can be inserted accidentally into the false lumen. Invasive cardiologists should keep this complication in mind.

The effect of myocardial fibrosis on left ventricular torsion and twist in patients with non-ischemic dilated cardiomyopathy.

BACKGROUND: Left ventricular (LV) rotation, twist, and torsion are important aspects of the cardiac performance. Myocardial fibrosis can be identified as the late gadolinium enhancement (LGE) in cardiac magnetic resonance (CMR). In this study, we investigated the association between myocardial fibrosis and LV rotational parameters in patients with nonischemic dilated cardiomyopathy (NDC). METHODS: Twenty-two NDC patients were enrolled. LV dimensions, volumes and ejection fraction (EF) were measured, conventional tissue Doppler imaging data was acquired. Speckle tracking imaging was performed to measure LV deformation, LV rotational parameters. Blood samples were obtained for NT-proBNP. Late gadolinium enhanced cardiac magnetic resonance (LGE-CMR) was used to assess cardiac fibrosis index. RESULTS: Myocardial deformation was similar between LGE+ and LGE- groups. LGE+patients have significantly higher basal and lower apical systolic rotation, lower twist and torsion when compared to LGE- patients. However, untwisting rate was similar between the groups. Torsion was significantly correlated with LVEF and MR-index. Patients with reversed apical systolic rotation had significantly greater NT-proBNP values, basal systolic rotation and significantly lower apical systolic rotation, torsion, and MR-index. CONCLUSIONS: Cardiac fibrosis index is closely related with myocardial torsion and LV systolic function and may be used for the evaluation of cardiac condition. Reversed apical systolicrotation indicated more extensive cardiac fibrosis as it may reflect severe LV dyssynchrony andpoor LV performance.

Relation of the severity of contrast induced nephropathy to SYNTAX score and long term prognosis in patients treated with primary percutaneous coronary intervention.

BACKGROUND: SYNTAX score (SXscore) has been developed to assess the severity and complexity of coronary artery disease. The aim of this study was to evaluate whether baseline SXscore was associated with contrast induced nephropathy (CIN) after primary percutaneous coronary intervention (p-PCI) in patients with ST-elevation myocardial infarction (STEMI). Secondarily we aimed to investigate the relation of the severity of CIN to long term prognosis. METHODS: We retrospectively enrolled 1893 patients with STEMI treated by p-PCI. We prospectively followed up the patients for a mean duration of 45 months. The patients were grouped according to the development of no nephropathy (grade 0, n: 1634), mild nephropathy (grade 1, n: 153) or severe nephropathy (grade 2, n: 106). RESULTS: SXscore was significantly higher (19.4±5.9 vs 15.6±4.8, p<0.001) in patients with CIN (grades 1 and 2) compared to those without CIN. SXscore was higher in patients with grade 2 CIN compared to those with grade 1 CIN (18.5±5.7 vs 20.7±5.9, p<0.001). In the multivariate analysis, SXscore was identified as an independent predictor of CIN (for one unit increment, OR: 1.06, 95% CI: 1.01-1.14, p=0.006). At long-term follow-up, death (p<0.001), stroke (p=0.006), reinfarction (p=0.024) and permanent HD requirement (p<0.001) were most frequent in grade 2 nephropathy group. HD was associated with very high in-hospital (60%) and long-term (83.3%) mortality rates. CONCLUSIONS: SXscore is an independent predictor of development and severity of CIN after p-PCI. CIN is associated with poor prognosis during both early and late postinfarction period.

The prognostic value of very low admission LDL-cholesterol levels in ST-segment elevation myocardial infarction compared in statin-pretreated and statin-naive patients undergoing primary percutaneous coronary intervention.

BACKGROUND: Some recent trials reported that, low admission low-density lipoprotein-cholesterol (LDL-C) levels were associated with increased mortality in patients with acute coronary syndromes. We aimed to compare the effect of very low admission LDL-C levels on prognosis in statin-pretreated and statin-naive patients with acute ST-segment elevation myocardial infarction (STEMI) undergoing primary angioplasty. METHODS: The study population consisted of 1808 patients with acute STEMIs who underwent primary angioplasty. The patients were categorized into four groups as: statin-pretreated/LDL-C<70 mg/dl (n=128), statin-pretreated/LDL-C ≥ 70 mg/dl (n=290), statin-naive/LDL-C <70 mg/dl (n=146), statin-naive/LDL-C ≥ 70 mg/dl (n=1244). The median follow-up was 40 months. RESULTS: The incidences of diabetes mellitus, hypertension, renal insufficiency, anemia, cardiogenic shock on presentation and the mean age were significantly higher in the statin-naive/LDL-C < 70 mg/dl group. In-hospital (2.3% vs 2.4% vs 12.3% vs 3.9%, respectively p<0.001) and long-term mortalities (6.3% vs 7.3% vs 25.9% vs 11.3% respectively, p<0.001) were significantly lower in the "statin-pretreated/LDL-C<70" group. Statin pretreatment was independently predicting lower long-term mortality irrespective of LDL-C level [for the subgroup with LDL-C < 70 mg/dl, Hazard Ratio (HR) 0.24, 95% CI 0.10-0.59, p=0.013; for the subgroup with LDL-C ≥ 70 mg/dl, HR 0.31, 95% CI 0.14-0.83, p=0.022]. LDL-C levels on admission had no independent predictive role on long-term mortality. CONCLUSIONS: Statin induced low LDL-C levels on admission are associated with better short- and long-term outcomes in patients with STEMI and independently predict lower long-term mortality. However, spontaneously low admission LDL-C levels were associated with increased short- and long-term mortalities.

[A late coronary aneurysm after sirolimus stent implantation which was treated with coronary graft stent]. / Sirolimus salinimli stent implantasyonu sonrasinda geç dönemde gelisen koroner arter anevrizmasinin greft stent ile tedavisi.

Drug eluting stents are being used frequently because of their less restenotic properties. However, their effect on preventing neo-intimal hyperplasia may cause many adverse effects such as coronary artery aneurysm (CAA). We report a case that presented with a CAA which was the latest developed CAA after the implantation of drug eluting stents in literature so far. A 57-year-old male presented with dyspnea and typical angina on effort. Coronary angiography was performed. A large CAA was detected at the site of a drug eluting stent which was implanted in the LAD artery 5.5 years ago. It was treated with a coronary stent graft successfully.

No harmful effect of dialysis-induced hypotension on the myocardium in patients who have normal ejection fraction and a negative exercise test.

BACKGROUND: We investigated the effects of dialysis-induced hypotension (DIH) on the myocardium of patients who have a normal ejection fraction and normal treadmill stress tests. METHODS: This study included 26 end-stage renal disease (ESRD) patients with DIH, 30 ESRD patients without DIH (non-DIH), and 30 control subjects. Mitral-myocardial systolic velocity (MSV), the mitral E'/A' ratio, the left ventricle filling pressure index (E/E' ratio), tricuspid-MSV, and the tricuspid E'/A' ratio were calculated. RESULTS: Biventricular systolic and diastolic functions were impaired in dialysis patients. The mitral and tricuspid MSV were similar between DIH and non-DIH patients (8.03 ± 0.90 cm/s vs. 8.31 ± 1.68 cm/s, p = 0.896, and 13.27 ± 2.97 cm/s vs. 13.15 ± 2.37 cm/s, p = 0.980). Mitral and tricuspid E'/A' were similar between DIH and non-DIH patients. (1.30 ± 0.53 vs. 1.16 ± 0.56, p = 0.695, and 0.70 ± 0.24 vs. 0.68 ± 0.33, p = 0.976). Likewise, the E/E' ratio was similar between DIH and non-DIH patients (8.20 ± 2.83 vs. 8.28 ± 2.53, p = 0.990). CONCLUSION: Although biventricular systolic and diastolic function is impaired in dialysis patients compared to controls, DIH episodes did not have an adverse effect on the myocardial functions.

Coronary calcium score, albuminuria and inflammatory markers in type 2 diabetic patients: associations and prognostic implications.

AIMS: To investigate the relationship of coronary artery calcium (CAC) scores with common carotid artery intima media thickness (CCA-IMT), albuminuria and inflammatory factors in type 2 diabetes. METHODS AND RESULTS: 128 asymptomatic type 2 diabetic patients, with at least one cardiovascular risk factor in addition to diabetes, were included in the study. CAC scores, carotid arteries plaque formation and CCA-IMT were assessed. The patients were followed for a mean period of 36.6 ± 3.3 months. Linear regression analysis identified the logarithmically transformed (Ln) albuminuria (ß=0.32, P=0.007), age (ß=0.04, P=0.001) and the uric acid (ß=0.13, P=0.04) as independent determinants of the CAC score. During follow-up period, cardiovascular events occurred in 18 out of 46 patients with CAC score ≥100 compared with 5 out of 82 patients with CAC score <100 (log rank, P<0.0001). Multivariate Cox proportional hazards analysis identified LnCAC score (P<0.0001), LnAlbuminuria (P=0.01) and uric acid (P=0.03) as independent predictors for cardiovascular events. CONCLUSIONS: There was a significant relationship between CAC score, albuminuria and inflammation in patients with type 2 diabetes. LnCAC score together with LnAlbuminuria and uric acid were identified as independent predictors of cardiovascular events in these patients.

Attenuated cardiovascular response to sympathetic system activation during exercise in patients with dialysis-induced hypotension.

BACKGROUND: We wished to investigate potential causes of dialysis-induced hypotension (DIH), including the attenuated cardiovascular response to sympathetic system activation during exercise and myocardial dysfunction. METHODS: This study included 26 end-stage renal disease (ESRD) patients with DIH, 30 ESRD patients without DIH (Non-DIH), and 30 control subjects. Each patient was evaluated with echocardiography and a symptom-limited treadmill stress test. The chronotropic index (CRI), heart rate recovery (HRR), systolic blood pressure response to exercise (SBP response), and tissue Doppler systolic myocardial velocities were calculated. RESULTS: The HRR and velocities were reduced in dialysis patients compared to controls; however, they were similar in patients with and without DIH. Patients with DIH had the lowest CRI compared to the Non-DIH group (0.62 ± 0.15 vs. 0.73 ± 0.17, p = 0.020) and controls (0.62 ± 0.15 vs. 0.86 ± 0.11, p < 0.001). Similarly, patients with DIH had the lowest SBP response values compared to the Non-DIH (34.88 ± 15.01 vs. 55.67 ± 25.42, p = 0.002) and controls (34.88 ± 15.01 vs. 59.70 ± 23.04, p < 0.001). CONCLUSION: Patients with DIH have inadequate sympathetic activity of the cardiovascular system during exercise and impaired left ventricular systolic function. Both factors could contribute to the development of hypotension during hemodialysis.

Impairment of the left ventricular systolic and diastolic function in patients with non-alcoholic fatty liver disease.

BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is considered the liver component of the metabolic syndrome. We investigated the diastolic and systolic functional parameters of patients with NAFLD and the impact of metabolic syndrome on these parameters. METHODS: Thirty-five non-diabetic, normotensive NAFLD patients, and 30 controls, were included in this study. Each patient underwent transthoracic conventional and tissue Doppler echocardiography (TDI) for the assessment of left ventricular (LV) diastolic and systolic function. Study patients were also evaluated with 24-hour ambulatory blood pressure monitoring. RESULTS: NAFLD patients had higher blood pressures, increased body mass indices, and more insulin resistance than controls. TDI early diastolic velocity (E' on TDI) values were lower in NAFLD patients than the controls (11.1 ± 2.1 vs 15.3 ± 2.7; p < 0.001). TDI systolic velocity (S' on TDI) values were lower in NAFLD patients than the controls (9.34 ± 1.79 vs 10.6 ± 1.52; p = 0.004). E' on TDI and S' on TDI values were moderately correlated with night-systolic blood pressure, night-diastolic blood pressure, and night-mean blood pressure in NAFLD patients. CONCLUSIONS: Patients with NAFLD have impaired LV systolic and diastolic function even in the absence of morbid obesity, hypertension, or diabetes.

Grading functional mitral regurgitation by tissue Doppler-derived isovolumic acceleration parameters in patients with nonischemic dilated cardiomyopathy.

Functional mitral regurgitation (FMR) is relatively common in heart failure and it is associated with adverse prognosis. The severity of FMR is usually assessed by echocardiography. Tissue Doppler echocardiography is used to acquire signals to determine the myocardial systolic functional parameters, including systolic ejection velocity and the systolic isovolumic acceleration (IVAs) rate. We investigated the utility of isovolumic acceleration parameters to grade the severity of FMR in nonischemic dilated cardiomyopathy (DC) patients. We analyzed the left ventricular systolic IVA rate, systolic isovolumic contraction (IVCs) velocity, and IVA duration (IVAd) values in 73 patients with DC. Patients were subgrouped according to FMR grade (Group I = mitral regurgitation mild and moderate; Group II = mitral regurgitation severe). IVAs was similar between two groups; however IVCs and IVAd were significantly higher in Group II than Group I. The IVCs cutoff value to predict severe FMR was 1.2 cm/sec (sensitivity 75% and specificity 70%). The IVAd cutoff value to predict severe FMR was 33 ms (sensitivity 77% and specificity 77%). Patients with IVCs ≥ 1.2 cm/sec and IVAd ≥ 33 ms had significantly higher FMR volume than the other subgroups. IVCs and IVAd values are useful to determine FMR severity in patients with DC.

Aortic elastic properties in nonalcoholic fatty liver disease.

BACKGROUND: Recent studies have shown that patients with nonalcoholic fatty liver disease (NAFLD) have an increased risk of developing cardiovascular disease. Aortic stiffness, an early marker of arteriosclerosis, is associated with cardiovascular mortality. In this study, the aortic elastic properties of nondiabetic, normotensive NAFLD patients were evaluated. METHODS: Thirty-five patients with NAFLD and 30 age-matched and sex-matched healthy controls were enrolled. Aortic distensibility, aortic strain, aortic stiffness index (ASI), left ventricular mass index (LVMI), homeostasis model assessment of insulin resistance (HOMA-IR) and fasting lipid parameters were assessed in both the groups. RESULTS: ASI was higher in NAFLD patients (7.1+/-2.0) than in the control group (3.8+/-1.0) (P<0.01). Aortic distensibility and aortic strain were also significantly decreased in NAFLD patients as compared with the control group (2.9+/-0.7 cm/dyn vs. 6.3+/-2.4 cm/dyn, P<0.0001 and 7.1+/-1.7 vs. 14.5+/-4.0, P<0.0001, respectively). Although ASI was significantly correlated with age, HOMA-IR, waist circumference, body mass index and LVMI, a stepwise multiple linear regression analysis showed that HOMA-IR and LVMI were the only variables associated with ASI index [(standardized beta coefficient= 0.41, P=0.004, overall R=0.17) and (standardized beta coefficient=0.31, P=0.02, overall R=0.10), respectively]. CONCLUSION: Our data suggest that aortic elasticity is significantly impaired and is also associated with insulin resistance and LVMI in NAFLD patients, which may contribute to the relationship between NAFLD and the increased risk of cardiovascular disease among these patients.

A promising new inotrope: levosimendan.

Intravenous positive inotropic agents are commonly used to treat the patients with acute decompensated heart failure due to left ventricular systolic dysfunction. Although these agents seem to be beneficial for improving symptoms of heart failure in the short-term; it has been reported that they are associated with increased mortality and morbidity. Levosimendan is a new calcium sensitizer and K-ATP channel opener, has emerged as an alternative option of pharmacologic inotropic support in patients with decompensated heart failure. Recent reports on levosimendan's use in severe heart failure demonstrated that this agent is more favorable drug compared with conventional inotropic agents, though its better profile in terms of myocardial efficiency has not been completely understood. This review summarizes the evidence from current scientific literature including our recent trials regarding the mechanism of action, efficiency and the use of levosimendan.

Utilidad de la aceleración isovolumétrica y los parámetros de ecocardiografía Doppler tisular en la predicción de la recuperación funcional postoperatoria tras cirugía valvular cardiaca / Usefulness of isovolumic acceleration and tissue doppler echocardiographic parameters for predicting postoperative functional recovery after heart valve surgery

Introducción y objetivos. La disfunción sistólica ventricular derecha (VD) postoperatoria se asocia a la isquemia miocárdica perioperatoria, la parada cardiaca hipotérmica, el bypass cardiopulmonar y la lesión pericárdica. La aceleración miocárdica durante la contracción isovolumétrica (AIV) y la velocidad miocárdica de contracción isovolumétrica (VIV) se ven menos afectadas por las condiciones de carga; en consecuencia, estos parámetros predicen las funciones miocárdicas mejor que los métodos convencionales. Hemos estudiado la utilidad de estos parámetros para predecir la función sistólica ventricular derecha postoperatoria tras la cirugía valvular cardiaca aislada. Métodos. Un total de 63 pacientes a los que se practicaron intervenciones de cirugía valvular cardiaca aislada fueron evaluados mediante ecocardiografía Doppler tisular antes de la operación, en el periodo postoperatorio inmediato y a los 6 meses de seguimiento postoperatorio. Resultados. En el seguimiento realizado a los 6 meses, se observó una mejoría significativa de la clase funcional de la New York Heart Association de los pacientes (p < 0,026). Hubo una recuperación funcional en 38 de los 63 pacientes en ese momento de valoración. El análisis de regresión logística puso de manifiesto que la AIV VD (odds ratio [OR] = 3,1; intervalo de confianza [IC] del 95%, 1,01-9,64; p = 0,047) y la presión arterial pulmonar sistólica (PAP) (OR = 1,07; IC del 95%, 0,99-1,15; p = 0,07) predecían de manera independiente la recuperación funcional a los 6 meses de la operación. Un total de 39 pacientes había recuperado los valores de AIV VD en el seguimiento realizado a los 6 meses. Se observó una correlación positiva entre la recuperación funcional y la recuperación de la AIV (correlación de Spearman, r = 0,499; p < 0,001). La recuperación de la AIV VD se observó en todos los grupos de pacientes con independencia del tipo de intervención quirúrgica y del ritmo auricular. Conclusiones. Los valores preoperatorios de AIV VD y PAP predicen de manera independiente la recuperación funcional a los 6 meses tras la cirugía valvular cardiaca aislada. La mejora de estos parámetros durante el periodo postoperatorio y su asociación con la recuperación funcional pueden ser útiles para la evaluación clínica de los pacientes tras la cirugía valvular cardiaca (AU)

Introduction and objectives. Postoperative right ventricular (RV) systolic dysfunction is associated with perioperative myocardial ischemia, hypothermic cardiac arrest, cardiopulmonary bypass and pericardial injury. As myocardial acceleration during isovolumic contraction (IVA) and myocardial velocity during isovolumic contraction (IVV) are little affected by loading conditions, they can predict myocardial function better than conventional parameters. We investigated the usefulness of these parameters for predicting postoperative RV systolic function after isolated heart valve surgery. Methods. Overall, 63 patients who underwent isolated heart valve surgery were evaluated by tissue Doppler echocardiography preoperatively, and immediately and 6 months postoperatively. Results. By the 6-month follow-up, patients’ New York Heart Association functional class had improved significantly (P < .026). At that time, functional recovery was observed in 38 of the 63 patients. Logistic regression analysis demonstrated that RV IVA (odds ratio [OR]=3.1; 95% confidence interval [CI], 1.01-9.64; P=.047) and pulmonary artery systolic pressure (OR=1.07; 95% CI, 0.99-1.15; P=.07) were independent predictors of functional recovery 6 months postoperatively. The RV IVA value had recovered by the 6-month follow-up in 39 patients. A positive correlation was observed between functional recovery and IVA recovery (Spearman’s correlation, r=0.499; P < .001). The RV IVA was observed to recover in all patient groups regardless of surgical method or atrial rhythm. Conclusions. Preoperative RV IVA and pulmonary artery systolic pressure were independent predictors of functional recovery 6 months after isolated heart valve surgery. Given its association with functional recovery, postoperative improvement in these parameters may be a useful clinical indicator after heart valve surgery (AU)

[Usefulness of isovolumic acceleration and tissue Doppler echocardiographic parameters for predicting postoperative functional recovery after heart valve surgery]. / Utilidad de la aceleración isovolumétrica y los parámetros de ecocardiografía Doppler tisular en la predicción de la recuperación funcional postoperatoria tras cirugía valvular cardiaca.

INTRODUCTION AND OBJECTIVES: Postoperative right ventricular (RV) systolic dysfunction is associated with perioperative myocardial ischemia, hypothermic cardiac arrest, cardiopulmonary bypass and pericardial injury. As myocardial acceleration during isovolumic contraction (IVA) and myocardial velocity during isovolumic contraction (IVV) are little affected by loading conditions, they can predict myocardial function better than conventional parameters. We investigated the usefulness of these parameters for predicting postoperative RV systolic function after isolated heart valve surgery. METHODS: Overall, 63 patients who underwent isolated heart valve surgery were evaluated by tissue Doppler echocardiography preoperatively, and immediately and 6 months postoperatively. RESULTS: By the 6-month follow-up, patients' New York Heart Association functional class had improved significantly (P< .026). At that time, functional recovery was observed in 38 of the 63 patients. Logistic regression analysis demonstrated that RV IVA (odds ratio [OR]=3.1; 95% confidence interval [CI], 1.01-9.64; P=.047) and pulmonary artery systolic pressure (OR=1.07; 95% CI, 0.99-1.15; P=.07) were independent predictors of functional recovery 6 months postoperatively. The RV IVA value had recovered by the 6-month follow-up in 39 patients. A positive correlation was observed between functional recovery and IVA recovery (Spearman's correlation, r=0.499; P< .001). The RV IVA was observed to recover in all patient groups regardless of surgical method or atrial rhythm. CONCLUSIONS: Preoperative RV IVA and pulmonary artery systolic pressure were independent predictors of functional recovery 6 months after isolated heart valve surgery. Given its association with functional recovery, postoperative improvement in these parameters may be a useful clinical indicator after heart valve surgery.

The influence of dipper and nondipper blood pressure patterns on left ventricular functions in hypertensive patients: a tissue Doppler study.

OBJECTIVES: We investigated the effect of dipper and non-dipper blood pressure patterns on left ventricular diastolic filling parameters in hypertensive patients. STUDY DESIGN: Fifty-five hypertensive patients (37 women, 18 men; mean age 55+/-10 years) were evaluated with echocardiography and ambulatory 24-hour blood pressure monitoring. All the patients received antihypertensive drug therapy for at least three months prior to the evaluations. Tissue Doppler-derived systolic and diastolic parameters were compared. RESULTS: Dipper and nondipper blood pressure patterns were found in 22 patients (40%) and 33 patients (60%), respectively. Both groups had similar left ventricular systolic and diastolic diameters. Dipper patients had significantly lower values for left atrial diameter (p<0.0001), interventricular septum (p=0.001) and posterior wall (p=0.012) thickness, left ventricular mass (p=0.017) and mass index (p=0.021). Both groups had similar mitral E and A waves, E/A ratio, E-wave deceleration time, isovolumetric relaxation time, and tissue Doppler-derived A' wave. Dipper patients had a significantly lower E/E' ratio (10.8+/-3.4 vs. 14.1+/-3.6; p=0.002) and significantly higher systolic (S') (p=0.05) and early diastolic (E') (p=0.027) tissue velocities. Based on the E/E' ratios being <15 or = or >15, the frequency of dipper hypertension was significantly higher in patients with E/E' <15 (48.8% vs. 9.1%; p=0.019). The frequency of dippers was also higher among patients having an E/E' ratio of <8, compared to those having an E/E' ratio of = or >8 to <15 (90% vs. 35.3%; p=0.019). CONCLUSION: Nondipper blood pressure pattern may be associated with increased left ventricular mass, impaired left ventricular systolic and diastolic dysfunction, and higher left ventricular filling pressures.