Short-Term Beat-to-Beat QT Variability Appears Influenced More Strongly by Recording Quality Than by Beat-to-Beat RR Variability by Ondřej Toman, Ondřej Toman, Katerina Hnatkova, Martina Šišáková, Martina Šišáková, Peter Smetana, Katharina M. Huster, Petra Barthel, Tomáš Novotný, Tomáš Novotný, Irena Andršová, Irena Andršová, Georg Schmidt, Marek Malik, Marek Malik

“…Increases in beat-to-beat variability of electrocardiographic QT interval duration have repeatedly been associated with increased risk of cardiovascular events and complications. …”
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1138 Measurement of beat-to-beat variability of stroke volume by Nayak Krishna S, Carvalho Hervaldo S, Carvalho Joao LA

Beat-to-Beat Blood Pressure Estimation by Photoplethysmography and Its Interpretation by Vincent Fleischhauer, Aarne Feldheiser, Sebastian Zaunseder

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Feasibility of Brachial Occlusion Technique for Beat-to-Beat Pulse Wave Analysis by Lukas Matera, Pavol Sajgalik, Vratislav Fabian, Yegor Mikhailov, David Zemanek, Bruce D. Johnson

“…Thus, we propose a validation of beat-to-beat signal analysis acquired by novel a brachial occlusion-cuff (suprasystolic) principle and signal obtained from Finapres during a forced expiratory effort against an obstructed airway (Valsalva maneuver). …”
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Beat-to-beat vectorcardiographic analysis of ventricular depolarization and repolarization in myocardial infarction. by Muhammad A Hasan, Derek Abbott, Mathias Baumert

“…OBJECTIVES: Increased beat-to-beat variability in the QT interval has been associated with heart disease and mortality. …”
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Using beat-to-beat heart signals for age-independent biometric verification by Moran Davoodi, Adam Soker, Joachim A. Behar, Yael Yaniv

“…Such signals should be simple to acquire with inexpensive equipment. The beat-to-beat information embedded within the time intervals between consecutive heart beats is a non-stationary physiological signal; its potential for biometric verification has not been studied. …”
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A method for noninvasive beat‐by‐beat visualization of His bundle signals by S. Sengottuvel, S. Shenbaga Devi, M. Sasikala, S. Satheesh, R. J. Selvaraj

“…However, noninvasive beat‐by‐beat extraction of HBS is challenged by ramp‐like atrial signals and noise in PR segment of the cardiac cycle. …”
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Finger beat-to-beat blood pressure responses to successive hand elevations. by Raamat, R, Jagomägi, K, Talts, J, Mäger, I

“…We investigated finger beat-to-beat blood pressure responses to a series of successive hand elevations in 14 normal volunteers. …”

Generalizable Beat-by-Beat Arrhythmia Detection by Using Weakly Supervised Deep Learning by Yang Liu, Qince Li, Qince Li, Runnan He, Kuanquan Wang, Jun Liu, Yongfeng Yuan, Yong Xia, Henggui Zhang, Henggui Zhang, Henggui Zhang

“…Beat-by-beat arrhythmia detection in ambulatory electrocardiogram (ECG) monitoring is critical for the evaluation and prognosis of cardiac arrhythmias, however, it is a highly professional demanding and time-consuming task. …”
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Clinical Potential of Beat‐to‐Beat Diastolic Interval Control in Preventing Cardiac Arrhythmias by Kanchan Kulkarni, Richard D. Walton, Antonis A. Armoundas, Elena G. Tolkacheva

“…Abstract Life‐threatening ventricular arrhythmias and sudden cardiac death are often preceded by cardiac alternans, a beat‐to‐beat oscillation in the T‐wave morphology or duration. …”
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Wearable Piezoelectric-Based System for Continuous Beat-to-Beat Blood Pressure Measurement by Ting-Wei Wang, Shien-Fong Lin

“…In conclusion, this study successfully developed a low-cost, high-accuracy piezoelectric-based system for continuous beat-to-beat SBP and DBP measurement without multiple calibrations and complex regression analysis. …”
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Increased Short-Term Beat-To-Beat Variability of QT Interval in Patients with Acromegaly. by Andrea Orosz, Éva Csajbók, Csilla Czékus, Henriette Gavallér, Sándor Magony, Zsuzsanna Valkusz, Tamás T Várkonyi, Attila Nemes, István Baczkó, Tamás Forster, Tibor Wittmann, Julius Gy Papp, András Varró, Csaba Lengyel

“…The aim of this study was to determine the short-term beat-to-beat QT variability in patients with acromegaly. …”
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Support system for classification of beat-to-beat arrhythmia based on variability and morphology of electrocardiogram by Jonathan Araujo Queiroz, Luana Monteiro Anaisse Azoubel, Allan Kardec Barros

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Sinoatrial Beat to Beat Variability Assessed by Contraction Strength in Addition to the Interbeat Interval by Helmut Ahammer, Susanne Scheruebel, Robert Arnold, Michael Mayrhofer-Reinhartshuber, Michael Mayrhofer-Reinhartshuber, Petra Lang, Ádám Dolgos, Brigitte Pelzmann, Klaus Zorn-Pauly

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Changes in beat-to-beat blood pressure and pulse rate variability following stroke by Arash Abiri, En-Fan Chou, Weining Shen, Mark J. Fisher, Michelle Khine

“…Beat-to-beat blood pressure (BP) measurements were collected from subjects while resting in the sitting position for one hour. …”
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On-Pump Beating/Non-Beating CABG in Stable Angina Have Similar Outcomes by Victor Dayan, Juan Jose Paganini, Alvaro Marichal, Daniel Brusich

“…Abstract Objective: On pump beating/non-beating coronary artery bypass grafts (CABG) has been compared in patients with unstable angina and/or severe left ventricular dysfunction. …”
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Influence of beat-to-beat blood pressure variability on vascular elasticity in hypertensive population by Yufa Xia, Xin Liu, Dan Wu, Huahua Xiong, Lijie Ren, Lin Xu, Wanqing Wu, Heye Zhang

“…Abstract Whether elevated beat-to-beat blood pressure variability (BPV) has an influence on vascular elasticity is confounded and poorly understood. …”
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Beat-to-beat finger photoplethysmography in atrial fibrillation patients undergoing electrical cardioversion by Andrea Saglietto, Stefania Scarsoglio, Daniela Canova, Gaetano Maria De Ferrari, Luca Ridolfi, Matteo Anselmino

“…The present study aims to expand current knowledge through a beat-to-beat analysis of non-invasive finger photoplethysmography (PPG) in AF patients restoring sinus rhythm by electrical cardioversion (ECV). …”
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Identifying a low-order beat-to-beat model of arterial baroreflex action by Chirravuri, Varun R

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Effect of snoring on respiratory effort measured indirectly by beat to beat blood pressure by Stradling, JR, Barbour, C, Langford, B, Smith, D, Pitson, D

“…To take advantage of this phenomenon to estimate changes in inspiratory effort requires a measure of beat to beat blood pressure. In a respiratory sleep study to identify obstructive sleep apnoea (OSA) and its variants, such measurements are useful to indicate increased inspiratory effort following upper airway narrowing. …”