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ECG monitoring

Torsten Schröder
Basic haemodynamic monitoring is an essential part of the anaesthesia work place. This includes Monitoring of ECG, blood pressure and pulse oximetry. For early assessement of perioperative complications every patient should have a basic haemodynamic monitoring, independant of current health status or the type of anaesthesia applied. Knowledge of function, principles and limitations ais necessary for proper interpretation of the measured values. Here, we describe the function and application of ECG, non - invasive intermittent blood pressure and pulse oximetry in the perioperative setting...
October 2016: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
Meki Bilici, Fikri Demir, Murat Muhtar Yılmazer, Fatma Bozkurt, Volkan Tuzcu
BACKGROUND: The clinical spectrum of Brucella infection is quite diverse and characterized by multi-system involvement. Patients present with myocarditis, endocarditis, or pericarditis. Infective endocarditis is the most common cardiovascular complication in patients with brucellosis. Although conduction abnormalities are seen in cases with endocarditis, they are reported very rarely in the setting of cardiac Brucella infection. CASE REPORT: An eight and a half-year-old male patient was referred to our clinic due to inadequate response to cotrimaxazole plus streptomycin treatment at the 15th day of admission...
September 2016: Balkan Medical Journal
Mohit Arora, Rekha S Patil
AIM AND OBJECTIVE: To study the cardiac manifestations of the dengue fever. METHODS: This one year descriptive study was undertaken at KLES Dr. Prabhakar Kore Hospital and Medical Research Centre, Belgaum under the Department of Medicine. A total of 120 patients with either dengue IgM or IgM and IgG were studied. The assessment of cardiac manifestations was done based on electrocardiogram, 2D echocardiography and cardiac enzymes. RESULTS: Of the 120 patients, 85 (70...
July 2016: Journal of the Association of Physicians of India
Giovanni Filardo, Gorav Ailawadi, Benjamin D Pollock, Briget da Graca, Danielle M Sass, Teresa K Phan, Debbie E Montenegro, Vinod Thourani, Ralph Damiano
BACKGROUND: New-onset atrial fibrillation (AF) after coronary artery bypass graft surgery (CABG) is associated with increased morbidity and poorer long-term survival. Although many studies show differences in outcome in women versus men after CABG, little is known about the sex-specific incidence and characteristics of post-CABG AF. METHODS AND RESULTS: Overall, 11 236 consecutive patients without preoperative AF underwent isolated CABG from 2002 to 2010 at 4 US academic medical centers and 1 high-volume specialty cardiac hospital...
October 18, 2016: Circulation. Cardiovascular Quality and Outcomes
Yusuke Fujii, Hideki Itoh, Seiko Ohno, Takashi Murayama, Nagomi Kurebayashi, Hisaaki Aoki, Malorie Blancard, Yoshihisa Nakagawa, Satoshi Yamamoto, Yumie Matsui, Mari Ichikawa, Keiko Sonoda, Tomoya Ozawa, Kimie Ohkubo, Ichiro Watanabe, Pascale Guicheney, Minoru Horie
BACKGROUND: Ventricular fibrillation (VF) may be caused by premature ventricular contractions (PVCs) whose coupling intervals are under 300ms, a characteristic of scTdP. OBJECTIVE: The purpose of this study is to analyze the underlying RyR2 variants in patients with the short-coupled variant of torsade de pointes (scTdP). METHODS: Seven patients with scTdP (34±12 years old, 3 females) were enrolled in this study. The RyR2 gene was screened by targeted gene sequencing methods, and variant minor allele frequency (MAF) was confirmed in three databases, and the pathogenicity was investigated in multiple in silico tools...
October 15, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Courtney N Gleason, Deanna L Kerkhof, Elizabeth A Cilia, Maria A Lanyi, Jonathan Finnoff, Dai Sugimoto, Gianmichel D Corrado
OBJECTIVE: The traditional history and physical (H&P) is a poor screening modality to identify athletes at risk for sudden cardiac death. Although better than H&P alone, electrocardiograms (ECG) have also been found to have high false-positive rates. A limited portable ECG by a frontline physician (PEFP) performed during preparticipation physical examination (PPE) allows for direct measurements of the heart to more accurately identify athletes with structural abnormalities. Therefore, it is worthwhile to assess the feasibility of incorporating limited PEFP as part of PPEs...
October 13, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Oleg Mamontov, Mikhail Bogachev, Andrey Kozlenoc
OBJECTIVE: To assess the autonomic regulation in patients with various circadian blood pressure profile (CBPP) anomalies that persisted despite of combined antihypertensive therapy. DESIGN AND METHOD: We studied 114 hypertensives aged 56,8 ± 17,9 years receiving combined antihypertensive therapy divided into two groups, with adequate (n = 61) and inadequate (n = 53) CBPP. Groups were comparable in terms of age and number of drugs intake per day (2.8 ± 1...
September 2016: Journal of Hypertension
Mi-Na Kim, Donghyuk Cho, Jae-Min Shim, Jong Il Choi, Seong-Mi Park, Young-Hoon Kim, Wan-Joo Shim
OBJECTIVE: Hypertension (HT) is the important risk factor for atrial fibrillation (AF). Hemodynamic overload by increased blood pressure causes atrial wall stretch and atrial dysfunction. Left atrial (LA) dysfunction has been regarded as the most important risk factor for AF recurrence after radiofrequency catheter ablation (RFCA). But there are controversies regarding the role of hypertension as a risk factor of AF recurrence after RFCA. The aim of this study was to assess whether the hypertension is an independent risk factor for AF recurrence after RFCA...
September 2016: Journal of Hypertension
David Hernando, Nuria Garatachea, Rute Almeida, Jose Antonio Casajús, Raquel Bailón
Heart rate variability (HRV) analysis during exercise is an interesting non-invasive tool to measure the cardiovascular response to the stress of exercise. Wearable heart rate monitors are a comfortable option to measure RR intervals while doing physical activities. It is necessary to evaluate the agreement between HRV parameters derived from the RR series recorded by wearable devices and those derived from an ECG during dynamic exercise of low to high intensity.23 male volunteers performed an exercise stress test on a cycle ergometer...
September 27, 2016: Journal of Strength and Conditioning Research
Thomas Sené, Olivier Lidove, Joel Sebbah, Jean-Marc Darondel, Hervé Picard, Laurent Aaron, Olivier Fain, Thierry Zenone, Dominique Joly, Philippe Charron, Jean-Marc Ziza
The incidence and predictive factors of arrhythmias and/or conduction abnormalities (ACAs) requiring cardiac device (CD) implantation are poorly characterized in Fabry disease (FD). The aim of our retrospective study was to determine the prevalence, incidence, and factors associated with ACA requiring CD implantation in a monocentric cohort of patients with confirmed FD who were followed up in a department of internal medicine and reference center for FD.Forty-nine patients (20M, 29F) were included. Nine patients (4M, 5F; 18%) had at least one episode of ACA leading to device therapy...
October 2016: Medicine (Baltimore)
Joachim Alexandre, Xavier Humbert, Marion Sassier, Paul Milliez, Antoine Coquerel, Sophie Fedrizzi
Cluster headache (CH) is a primary headache disorder with relatively effective treatments. Although few sufficiently controlled trials are available, verapamil is recommended as the first-line prophylactic drug for CH by the French Headache Society (with a low level of evidence, level B) and by the EFNS (European Federation of Neurological Societies, level A). Daily doses of more than 480 mg (and up to 1200 mg daily) are frequently used off-label, while 360 mg daily is the only dosage to have demonstrated its effectiveness in a double-blind trial against placebo, and the usual label posology used by cardiologists is 240 mg daily in hypertension...
December 2015: Drug Saf Case Rep
Shweta Jain, M K Ahirwal, Anil Kumar, V Bajaj, G K Singh
Electrocardiogram (ECG) is one of the most important physiological signals of human body, which contains important clinical information about the heart. Monitoring of ECG signal is done through QRS detection. In this paper, an improved QRS detection algorithm, based on adaptive filtering principle, has been designed. Enumeration of the effectiveness of various LMS variants used in adaptive filtering based QRS detection algorithm has been done through fidelity parameters like sensitivity and positive predictivity...
October 10, 2016: ISA Transactions
Nikolai Blanik, Konrad Heimann, Carina Pereira, Michael Paul, Vladimir Blazek, Boudewijn Venema, Thorsten Orlikowsky, Steffen Leonhardt
Vital parameter monitoring of term and preterm infants during incubator care with self-adhesive electrodes or sensors directly positioned on the skin [e.g. photoplethysmography (PPG) for oxygen saturation or electrocardiography (ECG)] is an essential part of daily routine care in neonatal intensive care units. For various reasons, this kind of monitoring contains a lot of stress for the infants. Therefore, there is a need to measure vital parameters (for instance respiration, temperature, pulse, oxygen saturation) without mechanical or conductive contact...
October 15, 2016: Biomedizinische Technik. Biomedical Engineering
Ming Dai, Xueliang Xiao, Xin Chen, Haoming Lin, Wanqing Wu, Siping Chen
With the increasing aging population as well as health concerns, chronic heart disease has become the focus of public attention. A comfortable, low-powered, and wearable electrocardiogram (ECG) system for continuously monitoring the elderly's ECG signals over several hours is important for preventing cardiovascular diseases. Traditional ECG monitoring apparatus is often inconvenient to carry, has many electrodes to attach to the chest, and has a high-power consumption. There is also a challenge to design an electrocardiograph that satisfies requirements such as comfort, confinement, and compactness...
October 14, 2016: Australasian Physical & Engineering Sciences in Medicine
Melanie A Gunawardene, Boris A Hoffmann, Benjamin Schaeffer, Da-Un Chung, Julia Moser, Ruken Oezge Akbulak, Mario Jularic, Christian Eickholt, Jana Nuehrich, Christian Meyer, Stephan Willems
INTRODUCTION: Comparative data of early recurrence rates of atrial fibrillation (ERAF) following second-generation cryoballoon (CB-G2) and radiofrequency current (RFC) ablation for pulmonary vein isolation (PVI) in paroxysmal AF (PAF) are rare. We randomized PAF patients into either PVI with CB-G2 (group 1) or PVI with a combined RFC-approach applying contact force (CF) with the endpoint of unexcitability (group 2) to investigate ERAF. METHODS: In group 1 (n = 30), CB-G2-PVI was performed...
October 14, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Jaspal Singh, R K Sharma, A K Gupta
Computers are used extensively in sleep labs for polysomnography and for assistance in sleep staging. However, the test is highly inconvenient to the patient and requires availability of specially equipped sleep labs. Alternative approaches that enable unobtrusive in-home sleep staging with ECG or other signals are highly desirable. In this paper we describe a method that can be used for distinction of REM and NREM sleep stages using spectral and non-linear features of ECG derived RR interval series. To test the accuracy of the system, we extracted the RR interval series from sleep studies of 20 young healthy individuals...
September 23, 2016: Computers in Biology and Medicine
Z Aktop, H Tanrıverdi, F Uygur, A İşleyen, B Kalaycı, Y C Gursoy, T Karabağ, M Aydın, I Akpınar
BACKGROUND: The aim of this study was to evaluate autonomic nervous system function by measuring heart rate variability (HRV) in patients with sarcoidosis without known cardiac manifestations. PATIENTS AND METHODS: The study comprised 61 participants, including 31 patients with sarcoidosis without known cardiac manifestations and 30 healthy volunteers. All participants underwent echocardiographic examination, 12-channel electrocardiography (ECG), and 24-h Holter monitoring...
October 13, 2016: Herz
Andrzej Wojtarowicz, Zdzisława Kornacewicz-Jach
BACKGROUND: Alcohol septal ablation (ASA) is a method of treatment in obstructive hypertrophic cardiomyopathy (HOCM), but there is little data on the long-term results of ASA and the natural course after treatment. The aim of the study was to evaluate the results of ASA in HOCM in multiannual observation, and its impact on patient survival, exercise capacity, electrical complications, and changes in the anatomy and function of the heart. METHODS: The study evaluated 47 patients with HOCM with a high left ventricular outflow tract (LVOT gradient) treated between 1997 and 2014 with ASA...
October 13, 2016: Cardiology Journal
Eedara Prabhakararao, M Sabarimalai Manikandan
In this Letter, the authors propose an efficient and robust method for automatically determining the VT and VF events in the electrocardiogram (ECG) signal. The proposed method consists of: (i) discrete cosine transform (DCT)-based noise suppression; (ii) addition of bipolar sequence of amplitudes with alternating polarity; (iii) zero-crossing rate (ZCR) estimation-based VTVF detection; and (iv) peak-to-peak interval (PPI) feature based VT/VF discrimination. The proposed method is evaluated using 18,000 episodes of different ECG arrhythmias taken from 6 PhysioNet databases...
September 2016: Healthcare Technology Letters
Syed Anas Imtiaz, James Mardell, Siavash Saremi-Yarahmadi, Esther Rodriguez-Villegas
Continuous patient monitoring systems acquire enormous amounts of data that is either manually analysed by doctors or automatically processed using intelligent algorithms. Sections of data acquired over long period of time can be corrupted with artefacts due to patient movement, sensor placement and interference from other sources. Owing to the large volume of data these artefacts need to be automatically identified so that the analysis systems and doctors are aware of them while making medical diagnosis. Three important factors are explored that must be considered and quantified for the design and evaluation of automatic artefact identification algorithms: signal quality, interpretation quality and computational complexity...
September 2016: Healthcare Technology Letters
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