The CHA2DS2-VASc score as a predictor of left atrial thrombus in patients with non-valvular atrial fibrillation.

OBJECTIVE: To investigate whether or not the CHA2DS2-VASc score predicts left atrial (LA) thrombus detected on pre-cardioversion transoesophageal echocardiography (TEE). MATERIALS AND METHODS: The medical records of patients who had undergone TEE were reviewed to assess the presence of LA thrombus prior to direct-current cardioversion for atrial fibrillation (AF). The CHA2DS2-VASc score was calculated for each patient. Clinical TEE reports were reviewed for the presence of LA thrombus. Patients with a valve prosthesis or rheumatic mitral valve disease were excluded from this study. RESULTS: A total of 309 patients were identified. The mean age was 70.1 ± 9.8 years and 151 (49%) patients were males and 158 (51%) were females. LA thrombus was seen in 32 (10.3%) of the 309 patients. Fifty (16.2%) patients had a low CHA2DS2-VASc score (0-1), 230 (74.4%) had an intermediate score (2-4) and 29 (9.4%) had a high score (5-9). The incidence of LA thrombus in the low, intermediate and high CHA2DS2-VASc score groups was 0, 4.4 and 68.7%, respectively. The LA thrombus risk increased with increasing CHA2DS2-VASc scores. On multivariate logistic analysis, the CHA2DS2-VASc score (OR 3.26, 95% CI 2.3-4.65; p = 0.001) and age (OR 0.93, 95% CI 0.88-0.98; p = 0.004) were independent risk factors for LA thrombus in patients with non-valvular AF. CONCLUSION: A high CHA2DS2-VASc score was independently associated with the presence of LA thrombus in patients with non-valvular AF.

Cardiovascular risk scores for coronary atherosclerosis.

OBJECTIVE: The objective of this study was to compare frequently used cardiovascular risk scores in predicting the presence of coronary artery disease (CAD) and 3-vessel disease. METHODS AND RESULTS: In 350 consecutive patients (218 men and 132 women) who underwent coronary angiography, the cardiovascular risk level was determined using the Framingham Risk Score (FRS), the Modified Framingham Risk Score (MFRS), the Prospective Cardiovascular Münster (PROCAM) score, and the Systematic Coronary Risk Evaluation (SCORE). The area under the curve for receiver operating characteristic curves showed that FRS had more predictive value than the other scores for CAD (area under curve, 0.76, P < or = 0.001), but all scores had good specificity and positive predictive value. For 3-vessel disease, the FRS had better predictive value than the other scores (area under curve, 0.74, P < or = 0.001), but all scores had good specificity and negative predictive value. CONCLUSION: The risk scores (FRS, MFRS, PROCAM, and SCORE) may predict the presence and severity of coronary atherosclerosis.The FRS had better predictive value than the other scores.

Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio are prolonged in patients with moderate and severe obstructive sleep apnea.

BACKGROUND: Prolongation of the peak and the end of T wave (Tp-e) has been reported to be associated with ventricular arrhythmias. Tp-e/QT ratio and Tp-e/QTc ratio are used as an index of ventricular arrhythmogenesis. An increased incidence of ventricular arrhythmias has been reported in patients with obstructive sleep apnea (OSA). The aim of this study was to assess ventricular repolarization in patients with OSA by using Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio. METHODS: We have studied 72 patients who underwent overnight polysomnography (PSG) between the years 2010-2011 at our institution. Patients with moderate and severe OSA (23 patients; mean age: 45±10), according to the apnea-hypopnea index, constituted the study group. Patients with normal PSG (23 patients; mean age: 42±11) were used as the control group. In all patients, Tp-e interval, Tp-e/QT ratio, Tp-e/QTc ratio, as well as some other electrocardiogram intervals were measured. Independent samples t-tests were used for comparison of continuous and categorical variables and correlations were calculated by Spearman rank correlation. RESULTS: Although QT and QTc intervals were not different between the groups, mean Tp-e interval (81.6±11.1 msn; 63.9±7.3 msn; respectively; P < 0.001), Tp-e/QT ratio (0.21±0.03; 0.17±0.02; respectively; P < 0.001), and Tp-e/QTc ratio (0.20±0.03; 0.16±0.02; respectively; P < 0.001) were prolonged in the study group compared to the control group. Correlation analysis showed a significant positive correlation between the presence of moderate and severe OSA and Tp-e interval (r = 0.72; P < 0.001), Tpe/QT ratio (r = 0.70; P < 0.001), and Tp-e/QTc ratio (r = 0.70; P < 0.001). CONCLUSIONS: Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio are prolonged in patients with moderate and severe OSA patients. There is a positive correlation between the presence of OSA and Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio.

CA-125 level is associated with right ventricular echocardiographic parameters in patients with COPD.

OBJECTIVE: A few studies have shown that elevated CA-125 levels are associated with chronic obstructive pulmonary disease (COPD). However, there are no data concerning the associaton between serum CA-125 levels and right ventricular (RV) function in COPD patients. This study aimed to evaluate the relationship between CA-125 level and RV echocardiographic parameters in COPD patients. METHODS: Fifty-two patients with COPD (39 male/13 female, mean age 68.9 ± 5.7 years) were studied. The control group consisted of 30 age-sex matched healthy volunteers (23 male/7 female, mean age 64.2 ± 6.3 years). Patients were divided into two subgroups: patients without pulmonary hypertension (group I, n = 25) and with pulmonary hypertension (group II, n = 27). Conventional echocardiographic parameters, tissue Doppler imaging (TDI) and CA-125 level measurements were performed in all subjects. RESULTS: Patients in group II had significantly higher CA-125 levels than those in group I and controls (P < 0.01). CA-125 levels in group I were also higher than control group (P < 0.05). CA-125 levels were correlated with left ventricle E/A ratio, systolic pulmonary artery pressure (sPAP), RV myocardial performance index, and RV fractional area change (r = 0.37, 0.56, 0.34, and -0.42, respectively, all with P < 0.05). There was an independent correlation between CA-125 levels and sPAP values (ß = 0.76, P < 0.001). CONCLUSIONS: Our results show an independent correlation between CA-125 levels and systolic pulmonary artery pressure in COPD patients. The clinical utility of these results at this point in time is unknown and deserves future research.

Coronary pseudoaneurysm and superior vena cava occlusion in a young patient with multicentric Castleman's disease and antiphospholipid antibody positivity.

Castleman disease is a non-malignant proliferative disease of the lymphoid system. It can be unicentric or multicentric. In this report, we present a case of multicentric Castleman disease to which coronary artery pseudoaneurysm, vena cava superior occlusion, and antiphospholipid antibody positivity was accompanying.

Effect of position changes on myocardial velocity in healthy subjects evaluated by tissue Doppler echocardiography.

OBJECTIVES: This study designed to assess the effect of different positions of head of the bed on myocardial velocity by tissue Doppler echocardiography in healthy subjects. METHODS: Thirty-nine healthy subjects (32 males/7 females, mean age 24.7 ± 4.9 years) were studied. Tissue Doppler imaging (TDI) was performed and velocities were recorded during systole (Sm) and early (Em) and late (Am) diastole at the tricuspid annulus, septum, and mitral annulus in the four-chamber view. Measurements were performed from different positions of left lateral decubitus (0°, 30°, and 60°). Repeated-measures general linear models were used to assess the change in myocardial velocities. RESULTS: No significant difference between myocardial velocities was found at the mitral anulus and septal TDI recordings in the different angles of left lateral decubitus positions (P > 0.05). However, there were statistically significant difference among tricuspid anulus myocardial tissue velocities in these positions (P < 0.05). CONCLUSIONS: Tricuspid anulus myocardial tissue velocities may be significantly influenced by changing of position in healthy subjects. Effect of position changes should be considered in the assessment of these velocities.

Elastic characteristics of aorta in patients with epilepsy.

AIM: To investigate elastic characteristics of the aorta in patients with epilepsy. METHODS: Seventy five patients with a diagnosis of epilepsy through clinical and EEG findings and age and sex matched, 50 healthy controls were included. Systolic and diastolic blood pressures plus systolic and diastolic diameter of the aortic root was measured. Aortic strain (AS) and aortic distensibility (AD) and aortic distensibility index (BSI) were calculated. RESULTS: The average age of the epilepsy group was 23.8.8 +/- 8.2 years, and of the control group it was 24.1 +/- 6.2 years (p > 0.05). AS and AD were lower in the epileptic group while the aortic stiffness index was higher (10.4 +/- 4.2 vs 16.9 +/- 0.2, p: 0.001, for AS; 8.7 +/- 4.0 vs 17.2 +/- 0.1, p: 0.001, for AD and 20.1 +/- 0.1 vs 3.5 +/- 1.2, p: 0.001 for BSI). CONCLUSION: Elastic characteristics of the aorta change in epileptic patients, with a decrease of the distensibility of the aorta and an increase of the stiffness. After this preliminary study, new controlled studies are needed.

Association of plasma B-type natriuretic peptide levels with shunt size in young adults with atrial septal defect.

OBJECTIVE: This study was designed to investigate the validity of brain natriuretic peptide (BNP) levels for the estimation of the shunt size in young adults with atrial septal defect (ASD), and to determine the relationship between BNP levels and echocardiographic parameters of right heart chambers. METHODS: Fifty-six patients with ASD (mean age 22.9 ± 2.0 years) were studied. The control group consisted of 31 age-gender matched healthy volunteers (mean age 22.7 ± 1.9 years). Coventional echocardiography, tissue Doppler imaging (TDI) and plasma BNP level measurement was performed in all participants. The ratio of pulmonary to systemic blood flow (Qp/Qs) was measured noninvasively using transthoracic echocardiography. RESULTS: Plasma BNP levels were significantly higher in ASD patients than in controls (42.9 ± 29.4 vs. 8.3 ± 2.6 pg/mL, P < 0.05). Pulmonary artery pressure (PAP) (P = 0.0001), right atrium (RA) volume (P = 0.0001), and right ventricular end-diastolic volume (RVEDV) (P = 0.0001) values were higher in ASD patients. There was a powerful correlation between plasma BNP levels and Qp/Qs ratio (r = 0.71, P < 0.0001). The plasma BNP levels significantly correlated with PAP (r = 0.61, P < 0.0001), RA volume (r = 0.54, P < 0.0001), RVEDV (r = 0.55, P < 0.0001), and right ventricular myocardial performance index (r = 0.50, P < 0.0001). CONCLUSION: This study shows that there is a significant correlation between right heart echocardiographic parameters and concentrations of BNP in the plasma of young adults with ASD. BNP levels may provide a supplemental data to predict of shunt size in these patients.

Advanced Age, Female Gender and Delay in Pacemaker Implantation May Cause TdP in Patients With Complete Atrioventricular Block.

AIM: We aimed to report the clinical features related to torsades de pointes (TdP) in patients with complete AV block (CAVB). METHODS: Patients with CAVB who were admitted to our instituition between January 2007 and January 2010 were retrospectively evaluated in terms of the occurence of TdP. The clinical features were compared in patients with and without TdP using the software of SPSS. RESULTS: Sixty-four patients were determined to have CAVB. Three of them had documented episodes of TdP. All three patients experiencing TdP were females, whereas 48% of the patients with CAVB were females. The mean age of patients with TdP was significantly greater than the mean age of the other patients (85 ±3 vs. 78±7.6, respectively; p<0.05). In our archives, bradycardia exposure time could be determined in only 49 patients without TdP. Among them, just 10 patients had been exposed to bradycardia over 48 hours, whereas all of the 3 patients with TdP had been exposed to bradycardia over 48 hours (p<0.05). Additionally, in two patients with TdP, we demonstrated that QT and QTc prolongation increases as the duration of bradycardia is extended. Furthermore, all patients with TdP had notched T waves in the ECG on the occurrence day of TdP, whereas they did not have any notched T wave in their ECG on the admission day. CONCLUSION: Among the patients with CAVB, elderly females are more susceptible to development of TdP. Delay in institution of physiological heart rate leads to further QT prolongation and thereby to TdP. Besides QT prolongation, the finding of T wave notching on ECG may also have a predictive value for TdP.

ST elevation in the lead aVR during exercise treadmill testing may indicate left main coronary artery disease.

BACKGROUND: exercise treadmill testing (ETT) is the most widely used method for evaluating patients with coronary artery disease. Predicting the left main coronary artery (LMCA) disease before invasive procedures is very important in risk assessment because of its severe clinical outcome. AIM: To examine whether ST elevation in lead aVR during ETT may suggest LMCA disease since the lead aVR is the reciprocal lead of LMCA. METHODS: in this study, 61 patients with positive ETT were included. The study group consisted of 21 patients with ST elevation in lead aVR. Forty patients, also having positive ETT, but without ST elevation in lead aVR comprised the control group. All patients underwent coronary angiography. RESULTS: coronary angiography in the study group revealed significant LMCA stenosis in 16 (76%) patients, whereas LMCA disease was present in only 3 (8%) patients from the control group. There was no significant coronary artery stenosis in 5 patients in the study group and 12 patients in the control group. Of the 16 patients who had LMCA stenosis, 9 had isolated LMCA disease and 7 had additional stenotic lesions in LAD or circumflex coronary arteries. The sensitivity and specificity of ST segment elevation in lead aVR during ETT was 84% and 88%, respectively. The values of positive and negative predictive value of this finding in diagnosing the presence of LMCA were 76% and 93%, respectively. CONCLUSIONS: ST segment elevation in lead aVR during ETT may point to a high probability of the presence of LMCA disease.