scholarly journals Effect of Coronary Slow Flow on Intrinsicoid Deflection of QRS Complex

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Sabri Seyis
Keyword(s):  
Wave Dispersion ◽  
Left Ventricular ◽  
P Wave ◽  
Control Group ◽  
Slow Flow ◽  
Pathophysiological Mechanism ◽  
P Wave Dispersion ◽  
Benign Condition ◽  
Coronary Syndrome ◽  
Coronary Slow Flow

Coronary slow flow is a rare, clinically important entity observed in acute coronary syndrome. The pathophysiological mechanism is not fully elucidated. We investigated patients with chest pain who had angiographic features consistent with the coronary slow flow. One hundred ten patients were included. Electrocardiography, echocardiography, and angiography results were retrospectively noted. The mean age was 56.4. Fifty-eight were male, and fifty-two were female. The control group consisted of patients with normal angiography. Patients had higher diastolic blood pressure, lower mean ejection fraction, higher average left ventricular end-diastolic diameter, and higher mean left atrial size than the control group (p=0.009,p=0.017,p=0.041,andp<0.001, resp.). Patients had higher average V1 ID, V6 ID, P wave dispersion, TFC LAD, TFC Cx, TFC RCA, and TFC levels than the control group. A significant linear positive relationship was found between the V1 ID and the TFC LAD, TFC Cx, TFC RCA, and TFC; also between the V6 ID and the TFC LAD, TFC Cx, TFC RCA, and TFC. Angiographic and electrocardiographic features are suggestive and diagnostic for the coronary slow flow syndrome. Although when regarded as a benign condition, coronary slow flow should be diagnosed, followed up, and treated as many of laboratory features suggest ischemic events.

scholarly journals P-Wave Duration and Dispersion in Patients with Mitral Stenosis

2021 ◽  
Author(s):  
Wenxia Fu ◽  
Jiawei Le ◽  
Xijin Wei ◽  
lixiu chen ◽  
Wenzhao Li ◽  
...  
Keyword(s):  
Mitral Stenosis ◽  
Test Group ◽  
Wave Dispersion ◽  
Left Ventricular ◽  
P Wave ◽  
Control Group ◽  
P Wave Dispersion ◽  
Wave Duration ◽  
P Wave Duration ◽  
Increased Risk

Abstract Background: Mitral stenosis (MS) is related to prolonged inter- and intra-atrial electromechanical delays and increased P-wave dispersion. The objective of the current study was to investigate the correlation between the P-wave duration, P-wave dispersion (PWD), mitral stenosis (MS) and to explore the cut-off values for predicting the MS in the patients.Methods: We enrolled 62 patients with MS and sinus rhythm as test group, and 62 healthy subjects matched in age- and sex- were selected as control group. We conducted the 12-lead electrocardiogram and echocardiography for all the subjects. The maximum and the minimum P-wave duration and PWD were calculated. Univariate and multivariate logistic regression analyses were performed to demonstrate the correlation between P-wave duration and PWD and MS. The receiver operating characteristic (ROC) curve was drawn to detect the threshold of P-wave duration and PWD for predicting the MS.Results: There were significant differences in the left atrial diameter (45.00±5.78 vs. 32.31±4.24 cm2), pulmonary artery pressure (46.68±17.29 vs. 32.64±2.86 mm Hg), left ventricular end-diastolic diameter (47.57±4.80 vs. 45.58±5.04 cm), ejection fraction (63.10±3.05 vs. 65.13±2.56%), aortic root inside diameter (29.60±3.50 vs. 31.58±3.58) and pulmonary trunk (24.17±2.78 vs. 22.23±1.77) values between the test group and the control group. Besides, the test subjects had significantly longer maximum P-wave duration (123.42±12.33 vs. 108.18±9.07) and larger P-wave dispersion (47.24±13.61 vs. 28.94±9.19). In the multivariate analysis, maximum P-wave duration (OR:1.221, 95% CI:1.126-1.324) and P-wave dispersion (OR:1.164, 95% CI:1.094-1.238) were correlated with the occurrence of MS. The optimal threshold for the maximum P-wave duration and PWD were 119.50ms, and 42.50ms, respectively, and the areas under the curve were 0.859 and 0.865, respectively. Conclusions: A longer P-wave duration and a higher PWD are correlated with the increased risk of MS progression.

scholarly journals Vessel heterogeneity of TIMI frame count and its relation to P-wave dispersion in patients with coronary slow flow

2016 ◽  
Vol 8 (3) ◽  
pp. 476-481 ◽  
Author(s):  
Xiaodong Zhuang ◽  
You Peng ◽  
Adham Sameer A. Bardeesi ◽  
Ekhlas Samir A. Bardisi ◽  
Xinxue Liao ◽  
...  
Keyword(s):  
Wave Dispersion ◽  
P Wave ◽  
Slow Flow ◽  
P Wave Dispersion ◽  
Timi Frame Count ◽  
Coronary Slow Flow

scholarly journals P-Wave and QT Dispersion in Children With βeta-Thalassemia

2020 ◽  
pp. 38-45
Author(s):  
Marwa Salama ◽  
Shimaa El-Nemr ◽  
Ibrahim Badraia ◽  
Amr Zoair
Keyword(s):  
Qt Dispersion ◽  
Wave Dispersion ◽  
Thalassemia Major ◽  
Left Ventricular ◽  
P Wave ◽  
Control Group ◽  
P Value ◽  
Internal Diameter ◽  
P Wave Dispersion ◽  
Lv Mass

Aim: This study aimed at assessing P-wave and QT interval dispersion in children with β-thalassemia and to correlate them with various laboratory and echocardiographic data. Methodology: Subjects comprised of 30   children with β-thalassemia major as the patient group. 30 healthy children matched for age and sex served as the control group. All patients were evaluated clinically as well as by echocardiography and 12 leads ECG. The type of study is prospective case control study. Results: There was a statistically significant increase of Interventricular Septal end diastole (IVSd), Interventricular Septal end systole (IVSs), Left Ventricular Internal Diameter end diastole (LVIDd), Left Ventricular Internal Diameter end systole (LVIDs) and Left Ventricular Posterior Wall end diastole (LVPWd) in patients as compared to controls (Mean ±SD = 0.950±0.166, 0.863±0.103, 3.983±0.456, 2.947±0.535a nd 0.797±0.165 respectively) (P < 0.05). Moreover, there were a significant increase of LV mass (Mean ±SD = 107.267±26.736, P= 0.002) and LV mass index of the studied patients (Mean ±SD = 106.900±22.651, P = 0.005) compared to the controls. There were significant decrease of ejection fraction (EF%)( Mean ±SD = 60.373 ± 8.088,  P = 0.032)and fractional shortening (FS%) (Mean ±SD = 29.495 ± 4.171, P = 0.026) of the studied patients compared to control group.  Both P wave dispersion (PWd) (Mean ±SD = 33.667 ± 13.767, P =     0.029) and QT dispersion (QTd) (Mean ±SD = 53.000 ± 18.411, P = 0.001) were significantly higher in patients compared to controls.  There was a significant positive correlation between PWd and serum ferritin (r =0.551, P-value= 0.002), LVIDd (r =0.406, P-value= 0.026), LVPWd (r =0.461, P-value= 0.010), LV mass (r =0.412, P-value= 0.024), and LV mass index(r = 0.379, P-value= 0.039). While, there were a significant positive correlations between QTd and serum ferritin (r =0.654, P-value <0.001), LVIDd (r = 0.388, P-value = 0.034), LV mass (r = 0.454, P-value = 0.012) and LV mass index (r = 0.456, P-value = 0.011). Conclusion: P wave dispersion and QT dispersion were prolonged in children with β-thalassemia major denoting cardiac autonomic dysfunction with homogeneity disorders of atrial conduction and ventricular repolarization in these patients. 

scholarly journals Determination of the relationship between the coronary slow flow phenomenon, and the P wave dispersion and QT dispersion

2012 ◽  
Vol 2 (2) ◽  
pp. 49-53 ◽  
Author(s):  
Yuksel Kaya ◽  
Ali Kemal Gur ◽  
Edip Gonullu ◽  
Tolga Sinan Guvenc ◽  
Ahmet Karakurt ◽  
...  
Keyword(s):  
Qt Dispersion ◽  
Wave Dispersion ◽  
P Wave ◽  
Slow Flow ◽  
P Wave Dispersion ◽  
Flow Phenomenon ◽  
Coronary Slow Flow ◽  
Coronary Slow Flow Phenomenon ◽  
The Relationship

scholarly journals Impaired atrial electromechanical coupling in lichen planus patients

2021 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
I Jafaripour ◽  
Z Aryanian ◽  
S Hosseinzadeh ◽  
R Pourkia ◽  
MM Ansari Ramandi ◽  
...  
Keyword(s):  
Lichen Planus ◽  
Electromechanical Coupling ◽  
Wave Dispersion ◽  
Tissue Doppler ◽  
P Wave ◽  
Control Group ◽  
P Value ◽  
P Wave Dispersion ◽  
Increased Risk ◽  
Significant Difference

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Lichen planus (LP) which is a chronic inflammatory disease can cause impaired atrial electromechanical coupling, leading to increased risk of atrial fibrillation. Purpose The present study aimed to evaluate atrial electromechanical coupling in LP patients by using electrocardiography (ECG) and echocardiography. Methods Forty-six LP patients were investigated in this cross-sectional case-control study. The control group comprised healthy individuals selected in age and gender-matched manner. Echocardiography and ECG were done for all patients to show inter and intra-atrial electromechanical delays and P wave dispersion respectively. The electromechanical delays were calculated by using the difference between the delays from the onset of the P wave on ECG to the onset of A wave on tissue Doppler recordings of the different areas. Results The baseline characteristics of the case and control group were similar and did not differ significantly. The P wave dispersion was 45.63 ± 3.48 milliseconds in the LP group in comparison to 36.56 ± 2.87 milliseconds in the control group (p &lt; 0.001). As shown in the table, the intra and inter-atrial electromechanical delays were also significantly prolonged in LP patients when compared to the control group (p &lt; 0.001). There was no significant difference between the left and right ventricular systolic function and diastolic function of the two groups. Conclusion The results of the study indicate the presence of significant impaired atrial electromechanical coupling in patients with LP confirmed by both electrocardiographic and echocardiographic tools. Electromechanical delays Case N = 46 (mean ± SD) Control N = 46 (mean ± SD) P value Septal - PA (msec) 59.71 ± 13.24 44.39 ± 11.07 0.002 Lateral - PA (msec) 55.71 ± 13.26 48.89 ± 11.21 0.009 Tricuspid - PA (msec) 52.37 ± 13.12 43.28 ± 10.58 0.002 Inter-atrial delay (msec) (lateral PA−RV PA) 8.47 ± 1.62 6.37 ± 1.36 &lt;0.001 Intra-atrial delay (msec) (LA) [lateral PA−septal PA] 4.80 ± 1.48 3.83 ± 0.82 &lt;0.001 Intra-atrial delay (msec) (RA) [septal PA−RV PA] 3.91 ± 0.96 2.02 ± 0.71 &lt;0.001 PA Delay from the onset of the P wave on ECG to the onset of A wave on tissue Doppler, N: number, SD: Standard Deviation, LA: Left Atrium, RA: Right Atrium, RV: Right Ventricle

P wave dispersion, Tpeak–Tend interval, and Tp-e/QT ratio in children with psoriasis

2020 ◽  
Vol 30 (3) ◽  
pp. 318-322
Author(s):  
Mecnun Çetin ◽  
İbrahim H. Yavuz ◽  
Mehmet Gümüştaş ◽  
Göknur Ö. Yavuz
Keyword(s):  
Wave Dispersion ◽  
P Wave ◽  
Cardiac Conduction ◽  
Control Group ◽  
Healthy Children ◽  
P Wave Dispersion ◽  
System Disease ◽  
Increased Risk ◽  
Electrocardiographic Parameters ◽  
Key Indicators

AbstractBackground:Psoriasis is a chronic inflammatory, multi-system disease that often begins in childhood and characterised by inflammatory skin, nails, scalp, and joint manifestations. The inflammation in psoriasis may promote some effect on the cardiac conduction system.Objective:The aim of this study is to investigate myocardial repolarisation anomaly on the conducting system in the paediatric psoriasis using P wave dispersion, Tpeak–Tend interval, and Tp-e/QT ratio.Methods:Forty-two patients diagnosed with psoriasis and 37 age- and sex-matched healthy children were enrolled in the study. Electrocardiographic parameters in psoriasis and control group were recorded from an electrocardiogram for each patient.Results:The results indicated that the parameters including Pdis, QTc dis, Tp-e dis interval, and Tp-e max/QTmax ratios, which are known to be key indicators for the prediction of severe atrial or ventricular arrhythmia and sudden cardiac death and also important parameters used as the indicators for the non-invasive evaluation of the transmural heterogeneity were significantly longer in the study group compared to the control group (p < 0.05).Conclusions:This study includes the evidence linking psoriasis with increased myocardial repolarisation heterogeneity. These findings suggest that this patient population may be at an increased risk for arrhythmias. Our findings may be a basis for further studies.

Increased QT and P-wave dispersion during attack-free period in pediatric patients with migraine attacks

2019 ◽  
Vol 29 (4) ◽  
pp. 488-491
Author(s):  
Oyku Tosun ◽  
Elif Karatoprak
Keyword(s):  
Wave Dispersion ◽  
P Wave ◽  
Sympathetic System ◽  
Control Group ◽  
Qtc Interval ◽  
Control Groups ◽  
P Wave Dispersion ◽  
Surface Ecg ◽  
Migraine Group ◽  
And Control

AbstractIntroduction:Migraine is a common neurovascular disease characterised with recurrent attacks by pain-free periods. It has been suggested that both sympathetic and parasympathetic dysfunctions play a role in its pathophysiology.Aim:The aim of our study was to investigate the ECG changes during attack-free period in children with migraine, in terms of QTc interval, QTc, and P-wave dispersion to evaluate the autonomic nervous system disturbance.Methods:Sixty children who were diagnosed with migraine were included as patient group and 50 healthy, age- and body mass index-matched children who were examined for innocent murmur were included as control group. The patients’ routine ECG records were screened from the outpatient clinic files. The durations of P-wave, QT, and QTc intervals and dispersion values and heart rates (beats/minute) were compared between the patient and control groups.Results:P maximum and P dispersion were significantly higher, and P minimum was significantly lower in the migraine group compared with the control group. QT–QTc maximum and QT–QTc dispersion were significantly higher and QT–QTc minimum was significantly lower in the migraine group compared with the control group.Conclusion:According to our findings, although migraine patients were asymptomatic and no arrhythmia was detected in the surface ECG, sympathovagal balance in the sympathetic system, which may be disrupted in favour of the sympathetic system, should continue even in the attack-free period, and we should be careful in terms of serious arrhythmias that may develop in these patients.

Assessment of cardiac function and electrocardiographic findings in patients with Wilson’s disease

2019 ◽  
Vol 29 (09) ◽  
pp. 1183-1188
Author(s):  
Asuman N. Karhan ◽  
Hayrettin H. Aykan ◽  
Ersin Gümüş ◽  
Yasemin Dönmez ◽  
Dursun Alehan ◽  
...  
Keyword(s):  
Patient Group ◽  
Doppler Echocardiography ◽  
Wilson’S Disease ◽  
Tissue Doppler ◽  
Wilson's Disease ◽  
Left Ventricular ◽  
P Wave ◽  
Tissue Doppler Echocardiography ◽  
Control Group ◽  
P Wave Dispersion

AbstractBackground:This study evaluated cardiac function using tissue Doppler echocardiography and assessed electrocardiographic findings in children diagnosed with Wilson’s disease.Method:Asymptomatic patients with a diagnosis of Wilson’s disease (n = 43) were compared to healthy controls (n = 37) that were age and gender matched.Results:The standard electrocardiographic and conventional echocardiographic examinations were similar in both groups. The left ventricular ejection fraction, shortening fraction, and diastolic function were not significantly different between the two groups. The Tei index for mitral lateral, mitral septal, tricuspid lateral, tricuspid septal, and inter-ventricular septum on tissue Doppler echocardiography was higher in the patient group, yet it did not reach statistical significance. Mitral lateral and septal systolic annular velocity values were significantly lower in the patient group when compared to the control group (p = 0.02 and 0.04, respectively). Also, mitral lateral and septal isovolumetric contraction time values were higher in the patient group (p = 0.04). Although the left ventricular values were not significantly different, relative left ventricular wall thickness was higher in the patient group when compared to the control group, and concentric remodelling in the left ventricle was found in 7 (16%) of 42 patients. QT interval (p = 0.02) and P-wave dispersion values (p = 0.04) were significantly higher in the patient group compared to the control group, and these tend to predict arrhythmias.Conclusion:Our study based on the tissue Doppler echocardiography assessment indicated a subclinical systolic, rather than diastolic, dysfunction in the myocardium with increased QT interval and P-wave dispersion, despite the young age of the patients and short disease duration.

How valuable is P-wave dispersion in the determination of carboxyhemoglobin levels?

2013 ◽  
Vol 33 (5) ◽  
pp. 466-472
Author(s):  
MT Sener ◽  
Y Anci ◽  
K Kalkan ◽  
MZ Kir ◽  
M Emet
Keyword(s):  
Roc Curve ◽  
Predictive Value ◽  
Complete Blood Count ◽  
Wave Dispersion ◽  
P Wave ◽  
Control Group ◽  
Co Poisoning ◽  
P Wave Dispersion ◽  
Cohb Level ◽  
Positive Correlations

Objective: To determine whether or not wave/interval dispersions in electrocardiography (ECG) are increased, and to define whether wave and interval dispersions are correlated with carboxyhemoglobin (COHb) levels. Methods: ECG, complete blood count, and biochemical parameters were taken from 87 patients with carbon monoxide (CO) poisoning as well as 90 control patients with similar age, gender, and body mass index distribution. COHb levels were recorded in CO-poisoning patients. The COHb levels and the relationships with ECG parameters were studied. Results: Pmax, Pmin, Pd, PRmax, PRmin, PRd, QTmax, QTmin, QTd, cQTmax, cQTmin, cQTd, Tmax, Tmin, and Td in ECG were higher in intoxicated patients than the control group ( p < 0.05 for all). Pearson’s correlation analyses showed moderately significant positive correlations between COHb level and Pmax ( r = 0.224; p = 0.037) and Pd ( r = 0.222; p = 0.039). The receiver–operator characteristic (ROC) curve showed that a Pd value of 38 ms determined by ECG separates patients with a COHb ≥ 20% with area under the ROC curve of 0.78 (95%CI = 0.71–0.83), a sensitivity of 67.9% (95%CI = 59.4–75.6), a specificity of 95% (95%CI = 83.0–99.2], a positive predictive value of 97.9% (95%CI = 92.5–99.7), and a negative predictive value of 46.3% (95%CI = 35.3–57.7.) Conclusion: A significant increase in wave/interval dispersions in the ECG of CO-poisoning patients compared with controls may show that not only a part is affected but both atrium and the ventricles as a whole are affected by hypoxic ischemia. When COHb levels of the patients are unavailable, P dispersion on ECG may show CO poisoning level of the patient.

Sign in / Sign up

Export Citation Format

Share Document