scholarly journals The Association Between Heart Rate Variability and 90-Day Prognosis in Patients With Transient Ischemic Attack and Minor Stroke

2021 ◽  
Vol 12 ◽  
Author(s):  
Changhong Li ◽  
Xia Meng ◽  
Yuesong Pan ◽  
Zixiao Li ◽  
Mengxing Wang ◽  
...  

Background: Low heart rate variability (HRV) is known to be associated with increased all-cause, cardiovascular, and cerebrovascular mortality but its association with clinical outcomes in patients with transient ischemic attack (TIA) or minor stroke is unclear.Methods: We selected TIA and minor stroke patients from a prospective registration study. From each continuous electrocardiograph (ECG) record, each QRS complex was detected and normal-to-normal (N-N) intervals were determined. The standard deviation of all N-N intervals (SDNN) and the square root of the mean squared differences of successive N-N intervals (RMSSD) were calculated. Logistic regression analysis and Cox regression analysis were performed to assess the outcomes of patients at 90 days, and the odds and risk ratios (OR/HR) of each index quartile were compared.Results: Compared with SDNN patients in the lowest quartile, neurological disability was significantly reduced in other quartile groups at 90 days, with significant differences [OR of group Q2 was 0.659; 95% confidence interval (CI), 0.482–0.900; p = 0.0088; OR of group Q3 was 0.662; 95% CI, 0.478–0.916; p = 0.0127; OR of group Q4 was 0.441; 95% CI, 0.305–0.639; p <0.0001]. Compared with the lowest quartile, the recurrence rate of TIA or minor stroke in patients of the two higher quartiles (Q3 and Q4) of SDNN was significantly reduced at 90 days (HR of Q3 group was 0.732; 95% CI, 0.539–0.995; p = 0.0461; HR of Q4 group was 0.528; 95% CI, 0.374–0.745; p = 0.0003).Conclusions: Based on our findings, autonomic dysfunction is an adverse indicator for neurological function prognosis and stroke recurrence 90 days after TIA or minor stroke.

2021 ◽  
Vol 10 (8) ◽  
pp. 1554
Author(s):  
Mechthild Westhoff-Bleck ◽  
Lars H. Lemke ◽  
Jan-Marc S. Bleck ◽  
Anja C. Bleck ◽  
Johann Bauersachs ◽  
...  

In adult congenital heart disease (ACHD), major depressive disorder (MDD) represents a frequent comorbidity. In non-CHD, adverse outcome is predicted by MDD and heart rate variability (HRV), whereas in ACHD their prognostic relevance is unknown. We prospectively evaluated 171 patients (age 35.6 ± 11.4 years; male 42.7%, mean observation time 54.7 ± 14.9 months). Binary regression analysis calculated the association between MDD and HRV. Cox proportional survival analysis estimated their impact on decompensated heart failure and all-cause mortality (HF/death), supraventricular and ventricular tachycardia (SVT/VT), and hospitalization due to unexpected cardiac causes. Exclusively MDD with moderate/severe symptoms showed significantly lower HRV as derived from frequency-domain analysis (Symindex) (p = 0.013). In multivariate Cox regression analysis, patients stratified according to the lower quartile of the Symindex comorbid with MDD (n = 16) exhibited poorer prognosis regarding HF/death (Hazard Ratio (HR): 7.04 (95%CI:(1.87–26.5)), SVT/VT (HR: 4.90 (95%CI:1.74–9.25)) and hospitalization (HR: 3.80 (95%CI:1.36–10.6)). An additional independent predictor was N-terminal pro-B-type natriuretic peptide elevation (p < 0.001), indicating advanced HF and heart disease complexity (p < 0.001). Autonomic nervous system dysfunction measured by altered HRV is considered to be one of the pathways linking MDD and adverse outcomes in cardiac diseases. Our results exceed the existing literature by demonstrating that MDD with decreased HRV is associated with poorer prognosis in ACHD.


Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Shinichiro Uchiyama ◽  
Takao Hoshino ◽  
Hugo Charles ◽  
Kenji Kamiyama ◽  
Taizen Nakase ◽  
...  

Background: We have reported 5-year risk of stroke and vascular events after a transient ischemic attack (TIA) or minor ischemic stroke in patients enrolled into the TIAregistry.org, which was an international multicenter-cooperative, prospective registry (N Engl J Med 2018;378:2182-90). We conducted subanalysis on the 5-year follow-up data of Japanese patients in comparison with non-Japanese patients. Methods: The patients were classified into two groups on ethnicity, Japanese (n=345) and non-Japanese (n=3502), and their 5-year event rates were compared. We also determined predictors of five-year stroke in both groups. Results: Death from vascular cause (0.9% vs 2.7%, HR 0.28, 95% CI 0.09-0.89, p=0.031) and death from any cause (7.8% vs 9.9%, HR 0.67, 95% CI 0.45-0.99, p=0.045) were fewer in Japanese patients than in non-Japanese patients, while stroke (13.9% vs 7.2%, HR 1.78, 95% CI 1.31-2.43, p<0.001) and intracranial hemorrhage (3.2% vs 0.8%, HR 3.61. 95% CI 1.78-7.30, p<0.001) were more common in Japanese than non-Japanese patients during five-year follow-up period. Caplan-Meyer curves at five-years showed that the rates of stroke was also significantly higher in Japanese than non-Japanese patients (log-rank test, p=0.001). Predictors for stroke recurrence at five years were large artery atherosclerosis (HR 1.81, 95% CI 1.31-2.52, p<0.001), cardioembolism (HR 1.71, 95% CI 1.18-2.47, p=0.004), multiple acute infarction (HR 1.77, 95% CI 1.27-2.45, p<0.001) and ABCD 2 score 6 or 7 (HR 1.96, 95% CI 1.38-2.78, p<0.001) in non-Japanese patients, although only large artery atherosclerosis (HR 3.28, 95% CI 1.13-9.54, p=0.029) was a predictor for stroke recurrence in Japanese patients. Conclusions: Recurrence of stroke and intracranial hemorrhage were more prevalent in Japanese than non-Japanese patients. Large artery atherosclerosis was a predictor for stroke recurrence not only in non-Japanese patients but also in Japanese patients.


Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Joon Hwa Lee ◽  
Hyunjin Jo ◽  
Jihoon Cha ◽  
Woo-Keun Seo ◽  
Oh Young Bang ◽  
...  

Background and purpose: We aimed to investigate the role of perfusion MRI parameters (TTP: time to peak, CBF: cerebral blood flow, CBV: cerebral blood volume) as a prognostic factor for the risk of stroke recurrence or cardiovascular outcome in patients with transient ischemic attack (TIA) or minor stroke. Methods: We retrospectively reviewed TIA or minor stroke patients who underwent our stroke MRI protocol (DWI, perfusion MRI, and MRA) in a consecutively collected stroke registry. Primary outcome was nonfatal stroke recurrence and secondary outcome was cardiovascular composite outcome. Multivariate analysis was used to examine the association of perfusion MRI parameters and angiographic findings with the risk of stroke recurrence and cardiovascular event. Results: Of the 326 patients who met inclusion criteria, we identified 15(4.6%) nonfatal strokes and 25(7.7%) cardiovascular composite events during the first 1 year after the index TIA or minor stroke. The presence of regional delayed perfusion on TTP maps (p=0.002) and regional hyperperfusion on CBV maps (p<0.001) were associated with recurrent stroke. In MRA images, concomitant stenosis of the intracranial arteries and/or extracranial carotid arteries was associated with cardiovascular events (p=0.009). Using multivariate cox proportional hazard analysis, presence of regional hyperperfusion on CBV remained an independent predictor of recurrent stroke (HR 10.82, 95% CI 4.19-38.67, p<0.001) and cardiovascular event (HR 6.30, 95% CI 2.67-18.25, p<0.001). The AUC of the CBV maps was also greater than other parameters for the prediction of stroke recurrence (AUC=0.701, 95% CI 0.54-0.86) and cardiovascular composite outcome (AUC=0.628, 95% CI 0.50-0.76). Conclusions: Increased CBV on perfusion MRI, representing the hemodynamic status of postischemic hyperperfusion, could be more useful than other perfusion parameters in predicting poor prognosis of TIA or minor stroke patients.


2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Sofia Skampardoni ◽  
Diana Y Y Chiu ◽  
Philip A Kalra ◽  
Darren Green

Abstract Background and Aims Cardiovascular disease is common in chronic and end stage kidney disease. Left ventricular hypertrophy (LVH) has been identified as contributor to cardiovascular risk in this population. The aim of the study was to assess whether the combined use of electrocardiography and echocardiography in assessing LVH in a haemodialysis population can provide improved risk stratification. Method Prospective study of 192 prevalent maintenance haemodialysis ( HD) patients 12 lead ECGs were performed on a mid week non –dialysis day. Electrocardiographic strain was defined as a down slopping convex ST segment with inverted T waves in leads V5 and / or V6. Transthoracic echocardiographic was performed immediately after ECG .LV mass was indexed to body surface area (LVMIBSA). LVH was determined if LVMI &gt;116g/m2 for male patients, and &gt;100g/m2 for female patients. The primary study endpoint was major cardiac events (MACE). A secondary endpoint was all cause mortality. Results 192 patients included in the final analysis, 137 (71.4%) male.. The mean ejection fraction (EF) was 60.6± 11.1 % and the mean LVMI (BSA) was 115.0± 36.8 g/m2. During a mean follow up period of 2.4 ± 1.0 years, 50 patients reached a MACE end point and 62 patients died. On univariate Cox regression analysis, the factors associated with MACE were the presence of ECG strain (HR 2.961, CI: 1.254 – 6.990, p= 0.013)) URR (HR 0.968, CI: 0.942 – 0.994, p=0.015) and history of CAD (HR: 2.397 CI: 1.363 -4.2515, p= 0.002). In multivariate Cox regression analysis adjusting for baseline cardiovascular phenotype and dialysis parameters ECG strain remained significantly associated with MACE. Conclusion The presence of electrocardiographic strain increases the risk for MACE independently of LVH in haemodialysis patients. ECG strain has potential to be a simple bedside prognostic biomarker and even therapeutic target in haemodialysis patients.


2021 ◽  
Vol 12 ◽  
Author(s):  
Shinya Tomari ◽  
Christopher R. Levi ◽  
Elizabeth Holliday ◽  
Daniel Lasserson ◽  
Jose M. Valderas ◽  
...  

Background: One-year risk of stroke in transient ischemic attack and minor stroke (TIAMS) managed in secondary care settings has been reported as 5–8%. However, evidence for the outcomes of TIAMS in community care settings is limited.Methods: The INternational comparison of Systems of care and patient outcomes In minor Stroke and TIA (INSIST) study was a prospective inception cohort community-based study of patients of 16 general practices in the Hunter–Manning region (New South Wales, Australia). Possible-TIAMS patients were recruited from 2012 to 2016 and followed-up for 12 months post-index event. Adjudication as TIAMS or TIAMS-mimics was by an expert panel. We established 7-days, 90-days, and 1-year risk of stroke, TIA, myocardial infarction (MI), coronary or carotid revascularization procedure and death; and medications use at 24 h post-index event.Results: Of 613 participants (mean age; 70 ± 12 years), 298 (49%) were adjudicated as TIAMS. TIAMS-group participants had ischemic strokes at 7-days, 90-days, and 1-year, at Kaplan-Meier (KM) rates of 1% (95% confidence interval; 0.3, 3.1), 2.1% (0.9, 4.6), and 3.2% (1.7, 6.1), respectively, compared to 0.3, 0.3, and 0.6% of TIAMS-mimic-group participants. At one year, TIAMS-group-participants had twenty-five TIA events (KM rate: 8.8%), two MI events (0.6%), four coronary revascularizations (1.5%), eleven carotid revascularizations (3.9%), and three deaths (1.1%), compared to 1.6, 0.6, 1.0, 0.3, and 0.6% of TIAMS-mimic-group participants. Of 167 TIAMS-group participants who commenced or received enhanced therapies, 95 (57%) were treated within 24 h post-index event. For TIAMS-group participants who commenced or received enhanced therapies, time from symptom onset to treatment was median 9.5 h [IQR 1.8–89.9].Conclusion: One-year risk of stroke in TIAMS participants was lower than reported in previous studies. Early implementation of antiplatelet/anticoagulant therapies may have contributed to the low stroke recurrence.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
P Haemmerle ◽  
C Eick ◽  
A Bauer ◽  
K.D Rizas ◽  
M Coslovsky ◽  
...  

Abstract Introduction The identification of clinically silent strokes in patients with atrial fibrillation (AF) is of high clinical relevance as they have been linked to cognitive impairment. Overt strokes have been associated with disturbances of the autonomic nervous system. Purpose We therefore hypothesize that impaired heart rate variability (HRV) can identify AF patients with clinically silent strokes. Methods We enrolled 1358 patients with AF without a history of stroke or transient ischemic attack from the multicenter SWISS-AF cohort study who were in sinus rhythm (SR-group, n=816) or AF (AF-group, n=542) on a 5 minute resting ECG recording. HRV triangular index (HRVI), the standard deviation of normal-to-normal intervals (SDNN) and the mean heart rate (MHR) were calculated. Brain MRI was performed at baseline to assess the presence of large non-cortical or cortical infarcts, which were considered silent strokes without history of stroke or transient ischemic attack. We constructed binary logistic regression models to analyze the association between HRV parameters and silent strokes. Results At baseline, silent strokes were detected in 10.5% in the SR group and 19.9% in the AF group. In the SR-group, HRVI &lt;15 was the only parameter independently associated with the presence of silent strokes (odds ratio (OR) 1.69; 95% confidence interval (CI): 1.04–2.72; p=0.033) after adjustment for various clinical covariates (age, sex, systolic blood pressure, history of hypertension, history of diabetes, history of heart failure, prior myocardial infarction, prior major bleeding, intake of oral anticoagulation, antiarrhythmics or betablockers). Similarly, in the AF-group, HRVI&lt;15 was independently associated with the presence of silent strokes (OR 1.65, 95% CI: 1.05–2.57; p=0.028). SDNN&lt;70ms and MHR&lt;80 were not associated with silent strokes, neither in the SR group, nor in the AF group (Figure). Conclusions Reduced HRVI is independently associated with the presence of clinically silent strokes in an AF population, both when assessed during SR and during AF. Our data suggest that a short-term measurement of HRV in routine ECG recordings might contribute to identifying AF patients with clinically silent strokes. Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): Swiss National Science Foundation


2021 ◽  
Author(s):  
Yanling Xu ◽  
Yijun Yu ◽  
Li He ◽  
Yuting Wang ◽  
Ye Gu

AbstractThe association between fragmented QRS (fQRS) and autonomic nervous dysfunction, and major adverse cardiovascular events (MACE) is not fully clear in patients with acute myocardial infarction (AMI). This study aimed to observe whether combined assessment with fQRS and cardiac autonomic nervous function could enhance the predicting efficacy on outcome in AMI patients. A total of 153 consecutive hospitalized AMI patients were included in this retrospective study. Patients were divided into non-fQRS (nfQRS) group and fQRS group according to 12-lead electrocardiogram, into sHRV [severely depressed heart rate variability (HRV): standard deviation of NN intervals (SDNN) < 100 ms and very low frequency (VLF) < 26.7 ms] group and nsHRV (non-severely depressed HRV) group according to 24 h Holter monitoring, and into non-MACE (nMACE) group and MACE group according to 12 months’ follow-up results. The incidence of sHRV was significantly higher in the fQRS group than in the nfQRS group (71.9 vs. 39.3%, p < 0.05). The incidences of MACE were 7.4, 22.2, 25.7 and 56.5%, respectively, in nsHRV + nfQRS group, nsHRV + fQRS group, sHRV + nfQRS group and sHRV + fQRS group (p < 0.05). Multivariable Cox regression analysis showed that patients in the sHRV + fQRS group had a sixfold higher risk of MACE compared to patients in the nsHRV + nfQRS group (HR = 6.228, 95% CI 1.849–20.984, p = 0.003). The predicting sensitivity and specificity on MACE were 81.4 and 58.2% by sHRV, 69.8 and 69.1% by fQRS in these AMI patients. The specificity (81.8%) was the highest with the combination of sHRV and fQRS. Adding sHRV and fQRS to clinical data offered incremental prognostic value. Present results indicate that fQRS is closely related to sHRV, suggesting significant impairment of sympathetic nerve function in AMI patients with fQRS. Combined assessment with fQRS and sHRV enhances the predicting efficacy on outcome in AMI patients.


2017 ◽  
Vol 24 (3) ◽  
pp. 536-541 ◽  
Author(s):  
Halil Atas ◽  
Ahmet Anıl Sahin ◽  
Dilek Barutçu Atas ◽  
Murat Sunbul ◽  
Alper Kepez ◽  
...  

Time in therapeutic range (TTR) of international normalized ratio is crucial for the safety and efficacy of anticoagulation with warfarin and it is influenced by many factors. There are limited data about the quality of warfarin therapy and its effects on clinical outcomes in Turkey. The aim of this study is to demonstrate the quality of anticoagulant therapy with warfarin and evaluate the parameters that affect the quality of warfarin therapy. A total of 170 patients with atrial fibrillation (AF; mean age: 62.2 ± 13.3; 69.2% female) treated with warfarin were included in this study. The mean follow-up period was 20 ± 8.4 months. The mean TTR levels of all patients were found to be 54.2% ± 21.4%. The TTR levels were similar in patients with valvular AF (VAF) and nonvalvular AF (NVAF). Logistic regression analysis revealed that elderly, heart failure (HF), and renal dysfunction were independent predictors of lower TTR. There were no significant differences between the VAF and NVAF subgroups regarding the incidence of mortality, stroke, and myocardial infarction. Cox regression analysis revealed that HF, coronary artery disease, and renal dysfunction were independent predictors of clinical outcomes in addition to lower TTR. Our results provide data regarding the quality of anticoagulation with warfarin from a single tertiary center in Istanbul, Turkey. The questions remain in seeking quality improvement in anticoagulation.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
K Nozaki ◽  
K Kamiya ◽  
N Hamazaki ◽  
R Matsuzawa ◽  
T Ichikawa ◽  
...  

Abstract Background Autonomic dysfunction is among the most important pathophysiological factors involved in the high mortality rate associated with cardiovascular disease (CVD). Autonomic function is generally evaluated by heart rate variability, which is obtained by Holter electrocardiography. However, the measurement of heart rate variability requires continuous electrocardiographic monitoring for 24 h, which is time consuming and not always feasible. The pupillary area is controlled by the autonomic nervous system; however, limited data are available regarding the utility of the pupillary area for predicting prognosis in patients with CVD. Purpose We aimed to investigate whether pupillary area can be used as a novel prognostic marker in patients with CVD. Methods We retrospectively reviewed 1342 consecutive Japanese patients hospitalized for CVD. The study was performed in accordance with the tenets of the Declaration of Helsinki, and the protocol was approved by the Ethics Committee of our University Hospital. The pupillary area measurement was performed on both eyes at least 7 days after hospitalization for CVD using a portable videopupillography system (Iriscorder Dual C10641; Hamamatsu Photonics, Hamamatsu, Japan) consisting of a goggle-shaped measurement portion with a charge-coupled device camera and a control portion with a video monitor and microcomputer with software for data analysis. After securing the goggles on the patient's face and fully covering the patient's eyes, a 5-minute period was allowed for dark adaptation. All patients were tested once between 09:00 and 12:00 h. The primary outcome of this study was all-cause mortality, and the endpoint time was calculated as the number of days from the date of pupillary area measurement up to three years. We performed the Kaplan–Meier and log-rank tests and multivariable Cox regression analysis to evaluate the prognostic predictive capability of the pupillary area. Results The study population had a mean age of 65±13 years, and 69.4% of the patients were male. The median of the pupillary area was 18.5 mm2 (interquartile range: 13.3–23.4 mm2). Over a median follow-up period of 1.9 years (interquartile range: 1.0–3.0 years), a total of 114 deaths occurred in the patient population. The Kaplan–Meier and log-rank tests revealed that all-cause mortality was significantly higher in the small pupillary area group than in the large pupillary area group (P<0.0001, Figure). Furthermore, Cox regression analysis indicated that the pupillary area was an independent predictor of mortality (Hazard ratio: 0.96; 95% confidence interval: 0.93–0.98; P=0.006) even after adjusting for several preexisting prognostic factors. Kaplan-Meire Curve Conclusion The pupillary area can be an independent predictor of prognosis in patients with CVD, and our observations suggest that the assessment of the pupillary area can be useful as a new noninvasive prognostic predictor in patients with CVD.


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