scholarly journals Challenges of Interpreting Smartwatch and Implantable Loop Recorder Tracings

Circulation ◽  
2021 ◽  
Vol 144 (16) ◽  
pp. 1351-1354
Author(s):  
Mathew S. Padanilam ◽  
Jasen L. Gilge ◽  
Asim S. Ahmed
Keyword(s):  
Implantable Loop Recorder ◽  
Loop Recorder

The Implantable Loop Recorder

2006 ◽  
Vol 0 (2) ◽  
pp. 61
Author(s):  
Richard Sutton ◽  
Michele Brignole ◽  
◽  
Keyword(s):  
Implantable Loop Recorder ◽  
Loop Recorder

Role of implantable loop recorder in the clinical diagnosis of syncope: Results of the introduction of an effective diagnostic tool

2015 ◽  
Vol 156 (15) ◽  
pp. 609-613
Author(s):  
Miklós Somlói ◽  
Emil Toldy-Schedel ◽  
Zoltán Nényei ◽  
Róbert Böszörményi ◽  
János Tomcsányi
Keyword(s):  
Clinical Practice ◽  
Diagnostic Yield ◽  
Diagnostic Algorithm ◽  
Definitive Treatment ◽  
Implantable Loop Recorder ◽  
Everyday Clinical Practice ◽  
Loop Recorder ◽  
Early Application ◽  
Electrocardiographic Monitoring ◽  
The Everyday

Introduction: Extension of electrocardiographic monitoring via loop recorder implantation may increase the diagnostic yield of syncope work-up. Aim: In this retrospective observational study, the authors wanted to evaluate the diagnostic performance of implantable loop recorder in the everyday clinical practice. Method: The authors analyzed the electronically stored data of all patients who underwent loop recorder implantation between 2005 and 2014 in their cardiology department because of recurrent syncope of undetermined origin. Results: There were 52 loop recorder implantations within the study period. During the 167 (±136) days of monitoring, 36 (69.2%) diagnostic events occurred. In two-thirds of events, (46.2% of all monitored patients) a specific arrhythmia diagnosis was reached, allowing definitive treatment in these cases. In this selected population, there was no correlation between age, presence of known high-risk predictors, or accompanying trauma, and the mechanism of syncope. Conclusions: The high diagnostic rate of implantable loop recorder in the everyday clinical practice is in accordance with the findings in prospective clinical studies. This observation supports the early application of loop recorder in the diagnostic algorithm of syncope. Orv. Hetil., 2015, 156(15), 609–613.

scholarly journals Patients with recurrent syncope and implantable loop recorder exhibit better survival than the control group without implantable loop recorder

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
C Perings ◽  
C Wolff ◽  
A Wilk ◽  
A Witthohn ◽  
R Voss ◽  
...  
Keyword(s):  
Life Expectancy ◽  
Control Group ◽  
Funding Source ◽  
Implantable Loop Recorder ◽  
Loop Recorder ◽  
Cardiac Device ◽  
Unexplained Syncope ◽  
Care Costs

Abstract Introduction In 30% of patients with syncope, the underlying cause remains unexplained after clinical investigations. Unexplained syncope tends to recur, significantly impacting patients' quality of life of patients and mortality. Thus, there is a need for timely and more accurate diagnosis to initiate treatment. Dedicated care pathways are recommended by ESC guidelines. Purpose Patients with recurrent syncope were followed over time and patient outcomes with ILR were compared to patients with the same syncope burden, age, gender and mortality risk score who did not receive an ILR. Method A representative database of 4.9 million patients insured by German company statuary health insurances (BKK) was analysed over a time period of 10 years, 2007–17. Patients with recurrent syncope (two times ICD-10 GM diagnosis codes R55), age between 45–84 and no diagnosis code for the syncope were included in the analysis and followed for at least 2 years. Patients with ILR were matched to patients without ILR based on age, gender and Charlson Comorbidity index (CCI) using mahalanobis distances. The index event was the device implant in the ILR group and the second syncope event in the control group. Life expectancy, syncope hospitalisations, fall related injuries, health care costs, diagnoses and treatment rates were compared between the groups. Results A total of 412 patients with ILR for recurrent unexplained syncope were matched to the control group. Overall mean age was 68, mean was CCI 2.7, 42% were females. The risk of death was 2.35 times higher in the control group during follow up as shown in Figure 1 (p-value logrank test <0.0001). Cardiovascular related diagnosis and treatment rates were higher in the ILR group with 69% of patients having a cardiology diagnosis compared to 41% in the control group. Over a quarter (27%) of ILR patients received an implantable cardiac device compared to 5% in the control group. Ablation rates were 7% in the ILR group compared to 0% in the control group. Median health care costs were € 3,847 higher in the ILR group including the costs of the ILR implant, follow up and higher rates of cardiac treatments. These extra costs appear moderate given the substantially higher mortality risk in the control group. Conclusion This study of patients with recurrent unexplained syncope shows a remarkable difference in life expectancy in patients with ILR compared to a matched control group. Two large claim data analysis have recently shown higher rates of cardiovascular death as well as all-cause mortality in patients with unexplained syncope. A more vigilant cardiac workup might be needed to identify a possible underlying cardiac condition. Higher rates of cardiac device therapy in the ILR group were likely to play an important role for their better life expectancy. Cardiac therapies such as pacemakers, defibrillators and ablation have also been shown to significantly improve patients' quality of life. Life Expectancy Comparison Funding Acknowledgement Type of funding source: Private company. Main funding source(s): The data analysis was funded by Medtronic

Hardware challenges with an anticoagulation strategy guided by detection of atrial fibrillation by an implantable loop recorder

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
S Mittal ◽  
D Brenner ◽  
S Oliveros ◽  
A Bhatt ◽  
M Preminger ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Data Transmission ◽  
Data Transfer ◽  
Implantable Loop Recorder ◽  
Loop Recorder ◽  
Bedside Monitor ◽  
Pill In The Pocket ◽  
Fundamental Requirement ◽  
Ecg Data ◽  
Clinical Strategy

Abstract Background A “pill-in-the-pocket” anticoagulation strategy, guided by ECG data from an implantable loop recorder (ILR), has been advocated as a clinical strategy. However, a fundamental requirement is the ability to reliably obtain daily ECG data from patients. Objective To determine the reliability of daily ECG data transfer from ILRs. Methods We evaluated patients implanted with an ILR in whom we sought to withhold oral anticoagulation (OAC) unless atrial fibrillation (AF) was detected. The ILR transmits data nightly to a bedside monitor. Once received, the data are sent to a central server. Over the course of a month, we tracked for each patient whether ECG data were received by the server. Results The study included 170 AF patients with an ILR where we planned to withhold OAC unless AF was documented. Daily ECG data were automatically transmitted and retrievable in only 36 (21%) patients. Two (1%) pts had not a single day of connectivity, 6 (4%) pts were connected <7 days, and 16 (9%) pts were connected <14 days. Wireless connectivity was lost for >48 hours in 89 (52%) patients (Figure). Most patients experienced multiple reasons for data transmission failure within the month. Conclusions To determine whether an ILR guided OAC strategy is feasible, reliable daily transmission of ECG data is a fundamental prerequisite. Current technology facilitated daily ECG data transfer in only 1/5 of patients. In the remaining, there was either extended loss of connectivity or no connectivity at all. A “pill-in-the-pocket” anticoagulation approach is currently difficult given existing hardware limitations. Funding Acknowledgement Type of funding source: None

Diagnosis of epilepsy using an implantable loop recorder in a child with long-QT syndrome type 3

2013 ◽  
Vol 55 (2) ◽  
pp. 251-253 ◽  
Author(s):  
Kazuhiro Takahashi ◽  
Akira Miyake ◽  
Yoshimitsu Otsuka ◽  
Masaharu Ohfu ◽  
Hitoshi Ganaha
Keyword(s):  
Long Qt Syndrome ◽  
Syndrome Type ◽  
Implantable Loop Recorder ◽  
Long Qt ◽  
Loop Recorder ◽  
Qt Syndrome ◽  
Type 3

Sex differences in echocardiographic predictors of bradycardia detected by implantable loop recorder in patients with syncope and palpitations

2021 ◽  
Author(s):  
Mathilde Musoni Falsing ◽  
Philip Brainin ◽  
Ditte Madsen Andersen ◽  
Charlotte Ellen Larroudé ◽  
Tommi Bo Lindhardt ◽  
...  
Keyword(s):  
Sex Differences ◽  
Implantable Loop Recorder ◽  
Loop Recorder

scholarly journals Implantable loop recorder: experience of a center

2021 ◽  
Vol 10 (Supplement_1) ◽  
Author(s):  
C Marques Pires ◽  
P Medeiros ◽  
C Oliveira ◽  
I Campos ◽  
M Flores ◽  
...  
Keyword(s):  
Positive Impact ◽  
Blood Pressure Monitoring ◽  
Electrophysiological Study ◽  
Stress Test ◽  
Sinus Node ◽  
Oral Anticoagulants ◽  
Paroxysmal Supraventricular Tachycardia ◽  
Implantable Loop Recorder ◽  
Diagnostic Challenge ◽  
Loop Recorder

Abstract Funding Acknowledgements Type of funding sources: None. INTRODUCTION Symptoms like syncope and palpitations are frequent and represent a diagnostic challenge. The implantable loop recorder (LR) is an important diagnostic tool, in selected cases. AIM To describe the main implantation indications of LR and to evaluate the diagnostic findings and therapeutic interventions. METHODS A retrospective study of patients (pts) that underwent LR implantation in our hospital from 2014 to 2019. For each pt the indication for implantation, baseline characteristics, previous study, recorded tracing and interventions were evaluated. RESULTS A total of 52 pts were included, 56% women, with a mean age of 60 years old. The implantation indications were recurrent syncope/ presyncope in 47 pts (90%) and palpitations in 5 pts (10%). All pts had a baseline echocardiogram and electrocardiogram, with 90% in sinus rhythm. QRS complex and atrial-ventricular conduction was normal in 50% of the pts. Previous to LR implantation, 46 pts (89%) had performed Holter, 19 (37%) carotid sinus massage, 14 (27%) Tilt table test, 29 (56%) stress test, 11(21%) ambulatory blood pressure monitoring and 9 (17%) electrophysiological study. During the monitoring period, 27 pts (52%) had recurrence of the symptoms. In this subgroup, we observed that 67% had a rhythmic cause capable of justified the symptoms, with a median of 5 months since implantation until diagnosis. In addition, the LR was useful in ruling out a rhythmic cause for symptoms in 33% of the cases. In the 47 pts with syncope/presyncope: 6(13%) had sinus node dysfunction, 4 (9%) had atrioventricular conduction disturbance, 1(2%) had atrial fibrillation (AF) and 3 (6%) had ventricular dysrhythmias. In the 5 pts with palpitations: 1(20%) had AF ad 3 (60%) had paroxysmal supraventricular tachycardia. LR results led to cardiac device implantation in 13 pts (pacemaker-9, implantable cardioverter desfibrillator-4). In addition, 2 pts are waiting for electrophysiological study and eventual ablation and 3 pts initiated antiarrhythmic therapy, and those with new diagnosis of AF also initiated oral anticoagulants. CONCLUSION In this study, the implantation of LR was useful to clarify the cause of the symptomology in 52% of the pts. In 35% of pts with symptom-rhythm correlation it ensured timely introduction of therapeutic approach with a positive impact on life quality.

Interference by Cellular Telephone with an Implantable Loop Recorder

2005 ◽  
Vol 12 (3) ◽  
pp. 237-240 ◽  
Author(s):  
Alexandre Trigano ◽  
Olivier Blandeau ◽  
Samuel Levy
Keyword(s):  
Implantable Loop Recorder ◽  
Cellular Telephone ◽  
Loop Recorder
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