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Non-invasive cardiac monitoring

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https://www.readbyqxmd.com/read/28733057/clinical-validation-of-non-invasive-cardiac-output-monitoring-in-healthy-pregnant-women
#1
Kelsey McLaughlin, Stephen P Wright, John C P Kingdom, John D Parker
OBJECTIVE: Non-invasive hemodynamic monitoring has the potential to be a valuable clinical tool for the screening and management of hypertensive disorders of pregnancy. The objective of this study was to validate the clinical utility of the non-invasive cardiac output monitoring (NICOM) system in pregnant women. METHODS: Twenty healthy pregnant women with a singleton pregnancy at 22 to 26 weeks' gestation were enrolled in this study. Measures of heart rate, stroke volume, and cardiac output were obtained through NICOM and compared with Doppler echocardiography...
July 18, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28705926/incidental-nuclear-cardiology-findings-in-the-interpretation-of-myocardial-spect-imaging
#2
Razi Muzaffar, Osama Raslan, Fatma Ahmed, Leonard Goldfarb, Barbara Sterkel, Medhat M Osman
Myocardial SPECT imaging plays a crucial role in the diagnosis of coronary artery disease providing a non-invasive tool to monitor ischemia and infarction. The findings can have a profound impact in diagnosing and managing these patients. However, non-cardiac incidental findings on myocardial SPECT images can also impact the management of these patients. These non-cardiac subtleties are most often detected on the raw rotating images which are often overlooked. The intent of this pictorial essay is to illustrate several subtle non-cardiac abnormalities within nuclear cardiac imaging which can have an impact on patient management and follow-up...
July 13, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28702808/longer-exercise-duration-delays-post-exercise-recovery-of-cardiac-parasympathetic-but-not-sympathetic-indices
#3
Scott Michael, Ollie Jay, Kenneth S Graham, Glen M Davis
PURPOSE: This study investigated non-invasive indices of post-exercise parasympathetic reactivation (using heart rate variability, HRV) and sympathetic withdrawal (using systolic time intervals, STI) following different exercise durations. METHODS: 13 healthy males (age 26.4 ± 4.7 years) cycled at 70% heart rate (HR) reserve for two durations-8 min (SHORT) and 32 min (LONG)-on separate occasions: HRV (including natural logarithm of root mean square of successive differences, Ln-RMSSD) and STI (including pre-ejection period, PEP) were assessed throughout 10 min seated recovery...
July 12, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28692337/a-multidisciplinary-perioperative-strategy-for-attaining-more-physiologic-cardiac-surgery
#4
Kyriakos Anastasiadis, Polychronis Antonitsis, Apostolos Deliopoulos, Helena Argiriadou
BACKGROUND: Cardiac surgery is, by definition, a "non-physiologic" intervention associated with systemic adverse effects. Despite advances in surgical technique, cardiopulmonary bypass (CPB) technology as well as anaesthesia management and patient care, there is still significant morbidity and subsequent mortality. AIM: We consider that the contemporary demand for further improving patient outcome mandates the upgrade from optimal perfusion during the procedure as the gold standard to the concept of a "more physiologic" cardiac surgery...
March 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28680770/reducing-over-utilization-of-cardiac-telemetry-with-pop-ups-in-an-electronic-medical-record-system
#5
Wajeeha Rizvi, Cyrus M Munguti, Jeet Mehta, K James Kallail, Darrell Youngman, Samer Antonios
Non-invasive cardiac monitoring has well-established indications and protocols. Telemetry is often overused leading to a shortage of tele-beds and an increment of hospital expenses. In some cases, patients are kept on telemetry longer than the indicated length because providers are unaware of its ongoing use. We investigated the effect of reminder pop-ups, incorporated into an electronic medical record (EMR), on minimizing the use of telemetry. Three regional hospitals implemented an electronic pop-up reminder for discontinuing the use of telemetry when no longer indicated...
May 29, 2017: Curēus
https://www.readbyqxmd.com/read/28669033/monitoring-the-brain-after-cardiac-arrest-a-new-era
#6
REVIEW
Niraj Sinha, Sam Parnia
PURPOSE OF REVIEW: Of the approximately 350,000 out-of-hospital, and 750,000 after in-hospital cardiac arrest (CA) events in the US annually approximately 5-9% and 20% respectively may achieve return of spontaneous circulation (ROSC) after attempted cardiopulmonary resuscitation (CPR). Up to 2/3 of these initial survivors may go on die in the subsequent 24-72 hours after ROSC due to a combination of (1) on-going cerebral injury, (2) myocardial dysfunction and (3) massive systemic inflammatory response...
August 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28665923/non-invasive-continuous-cardiac-output-and-cerebral-perfusion-monitoring-in-term-infants-with-neonatal-encephalopathy-assessment-of-feasibility-and-reliability
#7
Eva Forman, Colm R Breatnach, Stephanie Ryan, Jana Semberova, Jan Miletin, Adrienne Foran, Afif El-Khuffash
BACKGROUND: None invasive hemodynamic monitoring of infants with neonatal encephalopathy (NE) undergoing therapeutic hypothermia (TH) would be a potentially useful clinical tool. We aimed assess the feasibility and reliability of non-invasive cardiac output monitoring (NICOM) and near infrared spectroscopy (NIRS) in this cohort. METHODS: NICOM and NIRS were commenced to measure cardiac output (CO), systemic vascular resistance (SVR), blood pressure (BP), and cerebral regional oxygen saturations (SctO2) during TH and rewarming...
June 30, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28654911/radial-artery-intima-media-thickness-regresses-after-secondary-prevention-interventions-in-patients-post-acute-coronary-syndrome-and-is-associated-with-cardiac-and-kidney-biomarkers
#8
Damilola D Adingupu, Helena U Westergren, Santosh Dahgam, Ann-Cathrine Jönsson-Rylander, Juuso Blomster, Per Albertsson, Elmir Omerovic, Sara Svedlund, Li-Ming Gan
BACKGROUND: Radial artery intima-media thickness (rIMT) measured by ultra-high-resolution ultrasound is associated with increased cardiovascular risk and predicts outcomes. We performed non-invasive high-resolution ultrasound of the radial artery to investigate vascular changes in subjects presenting with acute coronary syndrome (ACS) and who had undergone percutaneous coronary intervention (PCI). PURPOSE: In the present work, we aimed to follow rIMT change over time post-acute coronary syndrome as a tool to monitor potential response to intensified medical therapy...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28648415/non-invasive-cardiac-output-monitoring-to-be-or-not-to-be-that-is-the-question
#9
EDITORIAL
Abhishek Gupta, Sundeep Mishra
Role of hemodynamic monitoring in critically ill patients is still controversial. While invasive monitoring is accurate, it may be counter-productive in view of its essentially invasive nature. Non-invasive monitoring is less intrusive but has not yet been well validated for accuracy compared with gold standard of invasive monitoring.
May 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28629374/multi-purpose-ecg-telemetry-system
#10
Mohamed Marouf, Goran Vukomanovic, Lazar Saranovac, Miroslav Bozic
BACKGROUND: The Electrocardiogram ECG is one of the most important non-invasive tools for cardiac diseases diagnosis. Taking advantage of the developed telecommunication infrastructure, several approaches that address the development of telemetry cardiac devices were introduced recently. Telemetry ECG devices allow easy and fast ECG monitoring of patients with suspected cardiac issues. Choosing the right device with the desired working mode, signal quality, and the device cost are still the main obstacles to massive usage of these devices...
June 19, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28611675/cardiac-autonomic-responses-during-exercise-and-post-exercise-recovery-using-heart-rate-variability-and-systolic-time-intervals-a-review
#11
REVIEW
Scott Michael, Kenneth S Graham, Glen M Davis
Cardiac parasympathetic activity may be non-invasively investigated using heart rate variability (HRV), although HRV is not widely accepted to reflect sympathetic activity. Instead, cardiac sympathetic activity may be investigated using systolic time intervals (STI), such as the pre-ejection period. Although these autonomic indices are typically measured during rest, the "reactivity hypothesis" suggests that investigating responses to a stressor (e.g., exercise) may be a valuable monitoring approach in clinical and high-performance settings...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28599199/the-haemodynamic-effects-of-bolus-versus-slower-infusion-of-intravenous-crystalloid-in-healthy-volunteers
#12
Ida F Ukor, Andrew K Hilton, Michael J Bailey, Rinaldo Bellomo
PURPOSE: This pilot study aimed to characterise the haemodynamic effect of 1L of IV normal saline (NS) administered as a rapid versus slow infusion on cardiac output (CO), heart rate (HR), systemic blood pressures, and carotid blood flow in six healthy volunteers. MATERIALS AND METHODS: Six healthy male volunteers aged 18-65years were randomized to receive 1L NS given over 30min or 120min. On a subsequent study session the alternate fluid regimen was administered...
May 30, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28596656/assessment-of-heart-and-liver-iron-overload-in-thalassemia-major-patients-using-t2-magnetic-resonance-imaging
#13
Hamid Farhangi, Zahra Badiei, Hasan Mottaghi Moghaddam, Mohammad Reza Keramati
Accumulation of excess iron in heart can lead to cardiac dysfunction, which is the most common cause of death in thalassemia major patients. Biopsy is an invasive procedure and therefore not an ideal option to assess iron load. However, standard/usual non-invasive methods, such as ferritin measurement, have some limitations and the results show poor correlations with iron load. Magnetic Response Imaging (MRI-T2*), as a non-invasive and reliable method for iron load assessment in organs such as liver and heart, can be suggested as a favorable alternative...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28592901/high-resolution-magnetic-resonance-imaging-of-the-regenerating-adult-zebrafish-heart
#14
Jana Koth, Mahon L Maguire, Darryl McClymont, Leonie Diffley, Victoria L Thornton, John Beech, Roger K Patient, Paul R Riley, Jürgen E Schneider
The adult zebrafish is a well-established model for studying heart regeneration, but due to its tissue opaqueness, repair has been primarily assessed using destructive histology, precluding repeated investigations of the same animal. We present a high-resolution, non-invasive in vivo magnetic resonance imaging (MRI) method incorporating a miniature respiratory and anaesthetic perfusion set-up for live adult zebrafish, allowing for visualization of scar formation and heart regeneration in the same animal over time at an isotropic 31 µm voxel resolution...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28584226/comparison-of-3-times-a-week-4-and-5-hour-in-center-hemodialysis-sessions-with-use-of-continuous-non-invasive-hemodynamic-monitoring
#15
Łukasz Czyżewski, Janusz Wyzgał, Janusz Sierdziński, Emilia Czyżewska, Jacek Smereka, Łukasz Szarpak
BACKGROUND Very aggressive ultrafiltration rate (lasting 3.5-4 h) may result in inadequate hemodialysis (HD). Our aim was to characterize HD-induced cardiovascular adaptation and its links to fluid removal during 4- vs. 5-h HD sessions. MATERIAL AND METHODS The study involved 50 HD patients. A Cardioscreen device (Messtechnik, Ilmenau, Germany) was used to perform non-invasive hemodynamic measurements during mid-week HD sessions. Body fluids and nutritional status were assessed with a Body Composition Monitor (Fresenius Medical Care)...
June 6, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28572789/impaired-baroreflex-sensitivity-after-bilateral-convulsive-seizures-in-patients-with-focal-epilepsy
#16
Kevin G Hampel, Christian E Elger, Rainer Surges
BACKGROUND: Sudden unexpected death in epilepsy (SUDEP) is probably due to an autonomic failure in the early postictal phase after bilateral convulsive seizures (BCS) in the majority of cases. The baroreflex sensitivity (BRS) is an established and reliable biomarker of autonomic function and sudden cardiac death. OBJECTIVE: To investigate whether postictal BRS depends on seizure type. METHODS: Beat-to-beat systemic blood pressure and heart rate were continuously and non-invasively recorded with the ccNexfin(®) device in patients with focal epilepsy undergoing video-EEG monitoring...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28572614/early-detection-and-serial-monitoring-of-anthracycline-induced-cardiotoxicity-using-t1-mapping-cardiac-magnetic-resonance-imaging-an-animal-study
#17
Yoo Jin Hong, Heae Surng Park, Jeffrey Kihyun Park, Kyunghwa Han, Chul Hwan Park, Tai Kyung Kim, Sae Jong Yoo, Ji Yeon Lee, Pan Ki Kim, Jin Hur, Hye-Jeong Lee, Young Jin Kim, Young Joo Suh, Mun Young Paek, Byoung Wook Choi
A reliable, non-invasive diagnostic method is needed for early detection and serial monitoring of cardiotoxicity, a well-known side effect of chemotherapy. This study aimed to assess the feasibility of T1-mapping cardiac magnetic resonance imaging (CMR) for evaluating subclinical myocardial changes in a doxorubicin-induced cardiotoxicity rabbit model. Adult male New Zealand White rabbits were injected twice-weekly with doxorubicin and subjected to CMR on a clinical 3T MR system before and every 2-4 weeks post-drug administration...
June 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28566194/non-invasive-vagus-nerve-stimulation-acutely-improves-spontaneous-cardiac-baroreflex-sensitivity-in-healthy-young-men-a-randomized-placebo-controlled-trial
#18
Diego Antonino, André L Teixeira, Paulo M Maia-Lopes, Mayara C Souza, Jeann L Sabino-Carvalho, Aaron R Murray, Jim Deuchars, Lauro C Vianna
BACKGROUND: Despite positive outcomes of transcutaneous vagus nerve stimulation (tVNS) via the auricular branch of the vagus nerve (ABVN), the mechanisms underlying these outcomes remain unclear. Additionally, previous studies have not been controlled the possible placebo effects of tVNS. OBJECTIVE: To test the hypothesis that tVNS acutely improves spontaneous cardiac baroreflex sensitivity (cBRS) and autonomic modulation, and that these effects are specific to stimulation of ABVN...
May 19, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28559848/efficient-fetal-maternal-ecg-signal-separation-from-two-channel-maternal-abdominal-ecg-via-diffusion-based-channel-selection
#19
Ruilin Li, Martin G Frasch, Hau-Tieng Wu
There is a need for affordable, widely deployable maternal-fetal ECG monitors to improve maternal and fetal health during pregnancy and delivery. Based on the diffusion-based channel selection, here we present the mathematical formalism and clinical validation of an algorithm capable of accurate separation of maternal and fetal ECG from a two channel signal acquired over maternal abdomen. The proposed algorithm is the first algorithm, to the best of the authors' knowledge, focusing on the fetal ECG analysis based on two channel maternal abdominal ECG signal, and we apply it to two publicly available databases, the PhysioNet non-invasive fECG database (adfecgdb) and the 2013 PhysioNet/Computing in Cardiology Challenge (CinC2013), to validate the algorithm...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28543041/the-added-value-of-cardiac-index-and-pulse-pressure-variation-monitoring-to-mean-arterial-pressure-guided-volume-therapy-in-moderate-risk-abdominal-surgery-coguide-a-pragmatic-multicentre-randomised-controlled-trial
#20
J Stens, J-P Hering, C W P van der Hoeven, A Boom, H S Traast, L E Garmers, S A Loer, C Boer
There is disagreement regarding the benefits of goal-directed therapy in moderate-risk abdominal surgery. Therefore, we tested the hypothesis that the addition of non-invasive cardiac index and pulse pressure variation monitoring to mean arterial pressure-based goal-directed therapy would reduce the incidence of postoperative complications in patients having moderate-risk abdominal surgery. In this pragmatic multicentre randomised controlled trial, we randomly allocated 244 patients by envelope drawing in a 1:1 fashion, stratified per centre...
May 25, 2017: Anaesthesia
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