Atrial fibrillation screening with photo-plethysmography through a smartphone camera

AbstractAimsThis cross-sectional study was set up to assess the feasibility of mass screening for atrial fibrillation (AF) with only the use of a smartphone.Methods and resultsA local newspaper published an article, allowing to subscribe for a 7-day screening period to detect AF. Screening was performed through an application that uses photo-plethysmography (PPG) technology by exploiting a smartphone camera. Participants received instructions on how to perform correct measurements twice daily, with notifications pushed through the application ’s software. In case of heart rhythm irregularities, raw PPG signals underwent secondary offline analysis to confirm a final diagnosis. From 12 328 readers who voluntarily signed up for screening (49 ± 14 years; 58% men), 120 446 unique PPG traces were obtained. Photo-plethysmography sign al quality was adequate for analysis in 92% of cases. Possible AF was detected in 136 individuals (1.1%). They were older (P 
Source: Europace - Category: Cardiology Source Type: research

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DiscussionThe interventions of education and medication alerts resulted in a significant increase in the percentage of patients receiving appropriate doses of dilTIAZem and a nonsignificant decrease in the incidence of hypotension. This process-oriented intervention resulted in an improvement in appropriate dilTIAZem doses at our site. Rate control was not statistically significantly different between the 2 groups. Long-term sustainability of this intervention requires further study.
Source: Journal of Emergency Nursing - Category: Nursing Source Type: research
Publication date: Available online 12 December 2019Source: Canadian Journal of CardiologyAuthor(s): Christopher C. Cheung, Thomas M. Roston, Jason G. Andrade, Matthew T. Bennett, Margot K. DavisAbstractCardiac amyloidosis occurs secondary to the deposition of insoluble protein fibrils in cardiac tissue leading to progressive myocardial dysfunction, clinical heart failure, and arrhythmia. In recent years, increasing awareness and improved screening have resulted in an increased prevalence of cardiac amyloidosis, with contemporary estimates reporting a prevalence of 18 to 55 cases per 100,000 person-years, and accounting for...
Source: Canadian Journal of Cardiology - Category: Cardiology Source Type: research
CONCLUSIONS: Although with a low number of pooled events, there was a trend for a lower post-procedure stroke in TMVR when compared with SMVR and a similar one between TMVR and OMT alone. PMID: 31829941 [PubMed - as supplied by publisher]
Source: EuroIntervention - Category: Cardiovascular & Thoracic Surgery Tags: EuroIntervention Source Type: research
ConclusionsPatients with peAF unresponsive to ablation show high surface and intracardiac DFs indicative of severe and uniform bi-atrial remodeling.
Source: Journal of Interventional Cardiac Electrophysiology - Category: Cardiology Source Type: research
We appreciate the thoughtful feedback regarding our manuscript by Drs. Lattanzi and Silvestrini. We agree that serologic and physiologic biomarkers of other occult stroke mechanisms would add to our understanding and management of these patients. In regard to occult cardiac sources of embolism, elevations in the brain natriuretic peptide,1 and larger P-wave terminal force (PWTF)2 or left atrial diameter3 are increasingly thought to be markers of a prothrombotic cardiopathy. As previously shown by Dr.
Source: Journal of Stroke and Cerebrovascular Diseases - Category: Neurology Authors: Tags: Letter to the Editor Source Type: research
AbstractAtrial fibrillation is the most common sustained arrhythmia encountered in primary care practice and represents a significant burden on the health care system with a higher than expected hospitalization rate from the emergency department. The first goal of therapy is to assess the patient ’s symptoms and hemodynamic status. There are multiple acute management strategies for atrial fibrillation including heart rate control, immediate direct-current cardioversion, or pharmacologic cardioversion. Given the variety of approaches to acute atrial fibrillation, it is often difficult to co nsistently provide cost-eff...
Source: Internal and Emergency Medicine - Category: Emergency Medicine Source Type: research
Source: Journal of Thrombosis and Thrombolysis - Category: Hematology Source Type: research
AliveCor is close to our hearts. Literally. David Albert, the co-founder of the company, started experimenting with handheld, wireless ECG devices in the late 90s. Approximately 10 years later we tried out their FDA-cleared, medical grade gadget. It was a truly inspiring moment. Needless to say, we’ve been keeping track of their journey ever since. In our eyes Kardia is the textbook example of technology shaping health care, empowering and supporting not only e-patients, but medical professionals as well. So, let’s take a look at their newest creation, the KardiaMobile6L! Why did the chicken cross the ro...
Source: The Medical Futurist - Category: Information Technology Authors: Tags: Health Sensors & Trackers cardiology ecg fda Healthcare heart technology Source Type: blogs
Publication date: Available online 10 December 2019Source: Journal of Clinical NeuroscienceAuthor(s): Junya Aoki, Kentaro Suzuki, Satoshi Suda, Seiji Okubo, Masahiro Mishina, Kazumi KimuraAbstractBackgroundSince acute fluid-attenuated inversion recovery vascular hyperintensity (FVH) is indicative of disordered blood flow, FVH is considered a marker of acute major arterial occlusion. Conversely, the role of the absence of FVH (negative-FVH) remains unknown.MethodsConsecutive stroke patients were studied via magnetic resonance angiography, within 24 h of onset and major arterial occlusion. All patients were examined usi...
Source: Journal of Clinical Neuroscience - Category: Neuroscience Source Type: research
Premature atrial complexes (PACs) meet increased attention as a potential intermediary between sinus rhythm and atrial fibrillation (AF). Patients with even high numbers of PACs do not fulfill current guidelines for oral anticoagulation treatment though an associated stroke risk is suspected. Objective: We aimed to determine whether a high number of PACs or runs of AF less than 30 seconds in 2-day continuous electrocardiogram (ECG) recording was associated with risk of recurrent ischemic stroke/transient ischemic attack (TIA) or death in a large cohort of patients with acute ischemic stroke or TIA and no prior AF.
Source: Journal of Stroke and Cerebrovascular Diseases - Category: Neurology Authors: Source Type: research
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