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Article ; Online: pRR30, pRR3.25% and Asymmetrical Entropy Descriptors in Atrial Fibrillation Detection.

Biczuk, Bartosz / Buś, Szymon / Żurek, Sebastian / Piskorski, Jarosław / Guzik, Przemysław

2024 Volume 26, Issue 4

Abstract: Background: Early detection of atrial fibrillation (AF) is essential to prevent stroke and other cardiac and embolic complications. We compared the diagnostic properties for AF detection of the percentage of successive RR interval differences greater ... ...

Abstract	Background: Early detection of atrial fibrillation (AF) is essential to prevent stroke and other cardiac and embolic complications. We compared the diagnostic properties for AF detection of the percentage of successive RR interval differences greater than or equal to 30 ms or 3.25% of the previous RR interval (pRR30 and pRR3.25%, respectively), and asymmetric entropy descriptors of RR intervals. Previously, both pRR30 and pRR3.25% outperformed many other heart rate variability (HRV) parameters in distinguishing AF from sinus rhythm (SR) in 60 s electrocardiograms (ECGs). Methods: The 60 s segments with RR intervals were extracted from the publicly available Physionet Long-Term Atrial Fibrillation Database (84 recording, 24 h Holter ECG). There were 31,753 60 s segments of AF and 32,073 60 s segments of SR. The diagnostic properties of all parameters were analysed with receiver operator curve analysis, a confusion matrix and logistic regression. The best model with pRR30, pRR3.25% and total entropic features (H) had the largest area under the curve (AUC)-0.98 compared to 0.959 for pRR30-and 0.972 for pRR3.25%. However, the differences in AUC between pRR30 and pRR3.25% alone and the combined model were negligible from a practical point of view. Moreover, combining pRR30 and pRR3.25% with H significantly increased the number of false-negative cases by more than threefold. Conclusions: Asymmetric entropy has some potential in differentiating AF from SR in the 60 s RR interval time series, but the addition of these parameters does not seem to make a relevant difference compared to pRR30 and especially pRR3.25%.
Language	English
Publishing date	2024-03-28
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2014734-X
ISSN	1099-4300 ; 1099-4300
ISSN (online)	1099-4300
ISSN	1099-4300
DOI	10.3390/e26040296
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Heart Rate Asymmetry, Its Compensation, and Heart Rate Variability in Healthy Adults during 48-h Holter ECG Recordings.

Sibrecht, Greta / Piskorski, Jarosław / Krauze, Tomasz / Guzik, Przemysław

Journal of clinical medicine

2023 Volume 12, Issue 3

Abstract: Heart rate asymmetry (HRA) reflects different contributions of heart rate (HR) decelerations and accelerations to heart rate variability (HRV). In this study, we examined various properties of HRA, including its compensation and HRV, in 48-h ... ...

Abstract	Heart rate asymmetry (HRA) reflects different contributions of heart rate (HR) decelerations and accelerations to heart rate variability (HRV). In this study, we examined various properties of HRA, including its compensation and HRV, in 48-h electrocardiogram (ECG) recordings in healthy adults. Furthermore, we compared sex differences in parameters used to quantify HRA and HRV. Variance-based and relative HRA and HRV parameters were computed for Holter ECG recordings lasting up to 48 h in 101 healthy volunteers. The median age of the subjects was 39 years, with 47 of them being men. The prevalence of all forms of HRA was statistically different from randomness (
Language	English
Publishing date	2023-02-03
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662592-1
ISSN	2077-0383
ISSN	2077-0383
DOI	10.3390/jcm12031219
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Article: Heart Rate Asymmetry in Healthy Children.

Zalas, Dominika / Bobkowski, Waldemar / Piskorski, Jarosław / Guzik, Przemysław

Journal of clinical medicine

2023 Volume 12, Issue 3

Abstract: Heart rate asymmetry (HRA) is a physiological phenomenon characterized by an unequal contribution of heart rate decelerations and accelerations to different heart rate variability (HRV) features. While HRA has been demonstrated in adults' ECGs of ... ...

Abstract	Heart rate asymmetry (HRA) is a physiological phenomenon characterized by an unequal contribution of heart rate decelerations and accelerations to different heart rate variability (HRV) features. While HRA has been demonstrated in adults' ECGs of different duration, a similar investigation in healthy children has not been conducted. This study investigated the variance- and number-based HRA features in 96 healthy children (50 girls and 46 boys, aged 3-18 years) using 24-h ECGs. Additionally, we studied sex differences in HRA. To quantify HRA, variance-based and relative contributions of heart rate decelerations to short-term (C1d), long-term (C2d), and total (CTd) HRV, and the number of all heartbeats (Nd) were computed. Heart rate decelerations contributed more to C1d, but less to C2d and CTd, and were less frequent than heart rate accelerations. Short-term HRA was better expressed in boys. The majority of children (93.7%) had short-term HRA, 88.5% had long-term HRA, 88.5% had total HRA, and 99.0% had more accelerations than decelerations. No sex differences were observed for the rate of various HRA features. Heart rate asymmetry is a common phenomenon in healthy children, as observed in 24-h ECGs. Our findings can be used as reference data for future clinical studies on HRA in children.
Language	English
Publishing date	2023-02-02
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662592-1
ISSN	2077-0383
ISSN	2077-0383
DOI	10.3390/jcm12031194
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Article: Asymmetric Properties of the Heart Rate Microstructure in Healthy Adults during 48 h ECG Recordings.

Sibrecht, Greta / Piskorski, Jarosław / Krauze, Tomasz / Guzik, Przemysław

Journal of clinical medicine

2023 Volume 12, Issue 23

Abstract: Heart rate asymmetry reflects the different contributions of heart rate (HR) decelerations and accelerations to heart rate variability (HRV). We examined the contribution of monotonic runs of HR accelerations and decelerations to the asymmetric ... ...

Abstract	Heart rate asymmetry reflects the different contributions of heart rate (HR) decelerations and accelerations to heart rate variability (HRV). We examined the contribution of monotonic runs of HR accelerations and decelerations to the asymmetric properties of the HR microstructure in the 48 h electrocardiograms (ECGs) of healthy adults (n = 101, 47 males, average age of 39 years) and analysed sex differences in the HR microstructure. The HR microstructure was asymmetric for runs of most lengths, except for sequences of two consecutive decelerations (DR2s) or accelerations (AR2s). Women had a higher prevalence of AR2s than men but fewer runs in the range of 4 to 11 consecutive accelerations (AR4-AR11s) and 5 to 11 consecutive decelerations (DR5-DR11s). The longest runs consisted of 47 consecutive accelerations (AR47s) and 27 consecutive decelerations (DR27s). More DR3s than AR3s and more DR4s than AR4s reveal a crossing of HR microstructure asymmetry. In conclusion, more acceleration than deceleration runs demonstrate that the HR microstructure was asymmetric in the 48 h ECGs. This phenomenon was present in both sexes but was more pronounced in men. For shorter runs of 3 and 4 consecutive heartbeats, there was a crossing of HR microstructure asymmetry, with more deceleration than acceleration runs.
Language	English
Publishing date	2023-12-02
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662592-1
ISSN	2077-0383
ISSN	2077-0383
DOI	10.3390/jcm12237472
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Article: Dependence of the Atrioventricular Conduction Time on the Conduction through the Atrioventricular Node and His-Purkinje System.

Żuchowski, Bartosz / Błaszyk, Krzysztof / Piskorski, Jarosław / Wykrętowicz, Andrzej / Guzik, Przemysław

Journal of clinical medicine

2023 Volume 12, Issue 4

Abstract: The electrical depolarization of the heart passes through various structures of the cardiac conduction system, which modify its conduction to different extents. In this study, we investigated the relationship between the atrioventricular conduction time ( ...

Abstract	The electrical depolarization of the heart passes through various structures of the cardiac conduction system, which modify its conduction to different extents. In this study, we investigated the relationship between the atrioventricular conduction time (AV interval) and its contributors, the atrioventricular node (AVN) and the His-Purkinje system (HPS), as represented by the AH and HV intervals, respectively. We also compared sex differences in these intervals and their relations. Resting intracardiac tracings lasting 5 min were obtained from 64 patients (33 women) during an invasive electrophysiological study. The aforementioned intervals were measured for all consecutive beats. The mean AH interval was 85.9 ms, HV 43.7 ms, and AV 129.6 ms. Men had longer AH (80.0 vs. 65.9 ms), HV (38.4 vs. 35.3 ms), and AV intervals (124.7 vs. 108.5 ms) than women. The AV intervals were linearly correlated with AH intervals in all patients (r
Language	English
Publishing date	2023-02-07
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662592-1
ISSN	2077-0383
ISSN	2077-0383
DOI	10.3390/jcm12041330
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Article ; Online: Mood Disorder Detection in Adolescents by Classification Trees, Random Forests and XGBoost in Presence of Missing Data.

Turska, Elzbieta / Jurga, Szymon / Piskorski, Jaroslaw

Entropy (Basel, Switzerland)

2021 Volume 23, Issue 9

Abstract: We apply tree-based classification algorithms, namely the classification trees, with the use of the rpart algorithm, random forests and XGBoost methods to detect mood disorder in a group of 2508 lower secondary school students. The dataset presents many ... ...

Abstract	We apply tree-based classification algorithms, namely the classification trees, with the use of the rpart algorithm, random forests and XGBoost methods to detect mood disorder in a group of 2508 lower secondary school students. The dataset presents many challenges, the most important of which is many missing data as well as the being heavily unbalanced (there are few severe mood disorder cases). We find that all algorithms are specific, but only the rpart algorithm is sensitive; i.e., it is able to detect cases of real cases mood disorder. The conclusion of this paper is that this is caused by the fact that the rpart algorithm uses the surrogate variables to handle missing data. The most important social-studies-related result is that the adolescents' relationships with their parents are the single most important factor in developing mood disorders-far more important than other factors, such as the socio-economic status or school success.
Language	English
Publishing date	2021-09-14
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2014734-X
ISSN	1099-4300 ; 1099-4300
ISSN (online)	1099-4300
ISSN	1099-4300
DOI	10.3390/e23091210
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Article: Arterial Blood Pressure Features of Hypertensive Patients with Typical and Atypical 460 nm Skin Fluorescence Response to Transient Ischaemia.

Pawlak-Chomicka, Regina / Uruski, Paweł / Krauze, Tomasz / Piskorski, Jarosław / Tykarski, Andrzej / Guzik, Przemysław

Journal of clinical medicine

2023 Volume 12, Issue 18

Abstract: Flow-mediated skin fluorescence (FMSF) at 460 nm is a non-invasive method for assessing dynamic changes in the reduced form of nicotinamide adenine dinucleotide (NADH) and microcirculation in forearm skin under varying conditions of tissue perfusion. ... ...

Abstract	Flow-mediated skin fluorescence (FMSF) at 460 nm is a non-invasive method for assessing dynamic changes in the reduced form of nicotinamide adenine dinucleotide (NADH) and microcirculation in forearm skin under varying conditions of tissue perfusion. Typically, fluorescence increases during ischaemia, but atypical cases show a temporary signal decrease instead of a constant increase. This study aimed to explore the clinical implications of atypical FMSF patterns in patients with newly diagnosed untreated hypertension. NADH fluorescence and pulse wave analysis were performed on 65 patients. Differences in peripheral and arterial pulse pressure profiles were examined based on FMSF curve courses. Patients with atypical curve courses had significantly (
Language	English
Publishing date	2023-09-10
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662592-1
ISSN	2077-0383
ISSN	2077-0383
DOI	10.3390/jcm12185886
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Article ; Online: Menstrual cycle influences on cue-induced smoking cravings and heart rate variability.

Ethier, Ashley / Sykes Tottenham, Laurie / Singh, Jyotpal / Neary, J Patrick / Piskorski, Jaroslaw / Gordon, Jennifer L

Behavioural pharmacology

2023 Volume 34, Issue 5, Page(s) 287–298

Abstract: Women experience greater difficulties in quitting smoking than men, though the hormonal factors contributing to this sex difference remain to be clarified. The current study aimed to examine menstrual cycle effects on smoking cue-induced cravings as well ...

Abstract	Women experience greater difficulties in quitting smoking than men, though the hormonal factors contributing to this sex difference remain to be clarified. The current study aimed to examine menstrual cycle effects on smoking cue-induced cravings as well as examine dynamic reproductive hormone change as a potential mediator underlying any cycle effects observed. Twenty-one women who smoke underwent two laboratory sessions - one in the mid-follicular phase and the other in the late luteal phase - involving an in-vivo smoking cue task, administered before and after exposure to a psychosocial laboratory stressor. Heart rate variability (HRV) and subjective smoking cravings were assessed in response to the cue task. The degree of change in the urinary metabolites of estradiol and progesterone from 2 days before to the day of each laboratory session was measured. Results revealed that both before and following exposure to psychosocial stress, highly nicotine-dependent women exhibited smaller cue-induced increases in HRV relative to the follicular phase. In contrast, less nicotine-dependent women exhibit an increase in HRV in both menstrual cycle phases. Results furthermore suggest that menstrual cycle effects seen in highly nicotine-dependent women are driven by the decline in estradiol and progesterone occurring in the late luteal phase. Though limited by a small sample size, this study suggests that withdrawal from reproductive hormones in the late luteal phase may alter highly nicotine-dependent women's physiological response to smoking cues, which may reflect greater difficulty resisting temptation. These findings may provide some insight regarding women's greater difficulty in maintaining abstinence after quitting smoking.
MeSH term(s)	Female ; Humans ; Male ; Heart Rate ; Cues ; Nicotine/pharmacology ; Progesterone/pharmacology ; Craving ; Menstrual Cycle/physiology ; Luteal Phase/physiology ; Luteal Phase/psychology ; Follicular Phase/psychology ; Estradiol/pharmacology ; Smoking
Chemical Substances	Nicotine (6M3C89ZY6R) ; Progesterone (4G7DS2Q64Y) ; Estradiol (4TI98Z838E)
Language	English
Publishing date	2023-06-24
Publishing country	England
Document type	Journal Article
ZDB-ID	1027374-8
ISSN	1473-5849 ; 0955-8810
ISSN (online)	1473-5849
ISSN	0955-8810
DOI	10.1097/FBP.0000000000000734
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Effects of phytocannabinoids on heart rate variability and blood pressure variability in female post-concussion syndrome patients: case series.

Singh, Jyotpal / Bhagaloo, Lanishen / Piskorski, Jaroslaw / Neary, J Patrick

Canadian journal of physiology and pharmacology

2021 Volume 100, Issue 2, Page(s) 192–196

Abstract: Cannabidiol (CBD) can exert neuroprotective effects without being intoxicating, and in combination with ... ...

Abstract	Cannabidiol (CBD) can exert neuroprotective effects without being intoxicating, and in combination with Δ
MeSH term(s)	Adult ; Autonomic Nervous System Diseases/drug therapy ; Autonomic Nervous System Diseases/etiology ; Autonomic Nervous System Diseases/physiopathology ; Blood Pressure/drug effects ; Cannabidiol/administration & dosage ; Cannabidiol/pharmacology ; Cannabidiol/therapeutic use ; Female ; Heart Rate/drug effects ; Humans ; Middle Aged ; Neuroprotective Agents ; Phytotherapy ; Post-Concussion Syndrome/complications ; Post-Concussion Syndrome/drug therapy ; Post-Concussion Syndrome/physiopathology
Chemical Substances	Neuroprotective Agents ; Cannabidiol (19GBJ60SN5)
Language	English
Publishing date	2021-10-01
Publishing country	Canada
Document type	Journal Article
ZDB-ID	127527-6
ISSN	1205-7541 ; 0008-4212
ISSN (online)	1205-7541
ISSN	0008-4212
DOI	10.1139/cjpp-2021-0395
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Zs.A 589: Show issues

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Jg. 1995 - 2021: Lesesall (1.OG)
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Article ; Online: The influence of external stressors on physiological testing: Implication for return-to-play protocols.

Ellingson, Chase J / Singh, Jyotpal / Ellingson, Cody A / Dech, Ryan / Piskorski, Jaroslaw / Neary, J Patrick

Current research in physiology

2022 Volume 5, Page(s) 240–245

Abstract: External stressors such as alcohol, caffeine, and vigorous exercise are known to alter cellular homeostasis, affecting the autonomic nervous system (ANS) and overall physiological function. However, little direct evidence exists quantifying the impact of ...

Abstract	External stressors such as alcohol, caffeine, and vigorous exercise are known to alter cellular homeostasis, affecting the autonomic nervous system (ANS) and overall physiological function. However, little direct evidence exists quantifying the impact of these external stressors on physiological testing. We assessed the impact of the above-listed stressors on spontaneous baroreflex sensitivity (BRS), heart rate variability (HRV), heart rate asymmetry (HRA), and systolic blood pressure variability (BPV). Seventeen male university varsity American-style football athletes completed two identical assessments on separate days, once presenting with one or more stressors (recent intake of caffeine, alcohol, or exercise participation; contraindicated assessment) and another with no stressors present (repeat assessment). Both assessments were conducted within one week and at the same time of day. The testing protocol consisted of 5-min of rest followed by 5-min of a squat-stand maneuver (0.05 Hz). Continuous beat-to-beat blood pressure and electrocardiogram measurements were collected and allowed for calculations of BRS, HRV, HRA, and BPV. Significant decreases (p < 0.05) in HRV and HRA metrics (SDNN, SD2, SDNNd, SDNNa, SD2a, SD2d), HRV total power, and BRS-up sequence were found during the contraindicated assessment in comparison to the repeat assessment. When assessing those with exercise as their only stressor, high-frequency HRV and BRS-pooled were significantly decreased and increased, respectively, during the contraindicated assessment. Pre-season physiological baseline testing in sport is becoming increasingly prevalent and thus must consider external stressors to ascertain accurate and reliable data. This data confirms the need for stringent and standardized guidelines for pre-participation baseline physiological testing.
Language	English
Publishing date	2022-06-14
Publishing country	Netherlands
Document type	Journal Article
ISSN	2665-9441
ISSN (online)	2665-9441
DOI	10.1016/j.crphys.2022.06.003
Database	MEDical Literature Analysis and Retrieval System OnLINE

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