Implantable Loop Recorder
ILR
Description
"Implantable Loop Recorder" (ILR) test uses a small device placed under the skin to monitor your heart’s rhythm for months or even years. This device helps evaluate unexplained fainting, irregular heartbeats, or rare arrhythmias that occur sporadically. The device records automatically or can be activated when symptoms appear. Doctors review the data to detect patterns and guide care decisions. ILRs provide long-term insight into heart rhythm issues, supporting early intervention and personalized treatment plans.
Test Category
Heart Function
Procedure
Invasive
Sample Type
No biological sample is needed for this test.
Units
Not Applicable
Procedure Category
Incise, Insert, Measure
Test Group
Cardiac Assessment Group
Test Group Description
Cardiac Assessment Group: Tests within this group focus on evaluating various aspects of heart health and function. They provide insights into cardiac performance, identify potential risk factors for cardiovascular diseases, and assist in diagnosing conditions such as arrhythmias, coronary artery disease, and heart failure.
Optimal Range
For All Individuals:
Result: Negative: No abnormalities detected.
Normal Range
For All Individuals:
Result: Negative: No abnormalities detected.
Results That Differ From The Norm (Direct and Indirect Causes)
Abnormal results may indicate:
Atrial fibrillation (Irregular heart rhythm originating in the atria)
Atrial flutter (Rapid but regular heart rhythm originating in the atria)
Bradycardia (Abnormally slow heart rate)
Cardiomyopathy (Disease of the heart muscle)
Heart block (Interruption in the electrical signals of the heart)
Long QT synd...
Key Reasons For Testing
Cardiac Monitoring: Provides continuous rhythm monitoring to detect arrhythmias.
Symptom Evaluation: Correlates symptoms like syncope or palpitations with heart rhythm disturbances.
Long-term Monitoring: Captures infrequent or asymptomatic arrhythmias missed by standard methods.
Diagnostic Tool: Assesses unexplained fainting and guides treatment for arrhythmias.
Fut...
Health Status Conditions It May Be Used To Assess
Currently, this test is not directly associated with any conditions listed on the Health Status page. However, it may be included as part of a broader set of tests linked to specific health conditions.
Some Prominent Medical Labs That May Offer This Test
Please note that this particular test has not been associated with any of the listed prominent medical labs. We recommend enquiring with your private physician or nearest hospital to determine where this specific test can be performed.
References
Important Note
Any medical procedure yielding results outside the norm may be directly or indirectly linked to the conditions outlined on this page. Various factors, including genetics, medication and supplement usage, recent illnesses, pregnancy, pre-test eating, smoking, and stress, can impact the test's outcome. Additionally, factors like false positives, false negatives, inaccurate analyses, and others can influence results.
Reference ranges, which help healthcare professionals interpret medical tests, may vary depending on age, gender, and other factors. They may also differ between laboratories due to variations in instruments and methods used. Optimal ranges are designed for preventive purposes, aiming to identify trends and potential risks early, while normal ranges reflect conventional laboratory values indicating no current disease or pathology. Your healthcare practitioner may have specific reasons for testing that deviate from the usual or may interpret results differently based on individual circumstances. Proper interpretation typically involves considering clinical findings and other diagnostic tests. Hence, it is crucial to provide your healthcare professionals with a comprehensive medical history, consult with them for result interpretation, and follow their guidance for potential re-testing or additional diagnostics.
Disclaimer
This content is provided solely for informative and educational purposes. It is not intended as a substitute for medical advice or treatment from a personal physician. Regarding the interpretation of their medical test results and/or specific health questions, it is recommended that all readers and viewers consult their physicians or other qualified health professionals. The publisher is not responsible for any adverse health effects that may result from reading or following the information in this educational content. Before beginning any nutrition, supplement, or lifestyle program, all viewers, especially those taking prescription or over-the-counter medications, should consult their physician or health care practitioner.
Please note that while prominent lab names are included in this content, we cannot guarantee that these labs offer all the tests mentioned. For confirmation, individuals should contact the labs directly or consult their medical practitioners. The information provided reflects general knowledge at the time of publication and may not include recent updates or emerging research. Readers should verify details with qualified professionals to ensure the most up-to-date and accurate guidance.
[1] Hindricks G, Pokushalov E, Urban L, et al. Performance of an implantable continuous arrhythmia monitoring device: the REVEAL Investigators. Europace. 2010;12(8):1118-1125.
[2] Sanna T, Diener HC, Passman RS, et al. Cryptogenic stroke and underlying atrial fibrillation. N Engl J Med.2014;370(26):2478-2486.
[3] Ziegler PD, Koehler JL, Mehra R. Comparison of continuous versus intermittent monitoring of atrial arrhythmias. Heart Rhythm. 2006;3(12):1445-1452.
[4] Mittal S, Movsowitz C, Steinberg JS. Ambulatory external electrocardiographic monitoring: focus on atrial fibrillation. J Am Coll Cardiol. 2011;58(17):1741-1749.
[5] Lopes RD, Alings M, Connolly SJ, et al. Rationale and design of the Apixaban for the Reduction of Thrombo-Embolism in patients with device-detected sub-clinical atrial fibrillation (ARTESiA) trial. Am Heart J. 2017;189:137-145.
[6] Diederichsen SZ, Haugan KJ, Højberg S, et al. Comprehensive evaluation of risk factors for atrial fibrillation: the Copenhagen Atrial Fibrillation Risk Study (CARS). Am Heart J. 2019;215:1-9.
[7] Glotzer TV, Daoud EG, Wyse DG, et al. The relationship between daily atrial tachyarrhythmia burden from implantable device diagnostics and stroke risk: the TRENDS study. Circ Arrhythm Electrophysiol. 2009;2(5):474-480.
[8] Kirchhof P, Blank BF, Calvert M, et al. Probing orally administered anticoagulants in the ARTESiA trial. Eur Heart J.2019;40(5):367-372.
[9] Passman R, Leong-Sit P, Andrei AC, et al. Targeted anticoagulation for atrial fibrillation identified by continuous cardiac rhythm monitoring. Heart Rhythm. 2016;13(8):1769-1775.
[10] Boriani G, Laroche C, Diemberger I, et al. Usage of oral anticoagulants and antiplatelet therapy in atrial fibrillation patients. Europace. 2018;20(10):1577-1587.
[11] Reiffel JA, Verma A, Kowey PR, et al. Incidence and timing of first detection of atrial fibrillation by an implantable monitor in patients with cryptogenic stroke or TIA: Results from the CRYSTAL AF study. Circ Arrhythm Electrophysiol.2014;7(2):284-291.
[12] Rodrigues EA, Fahey MD, Christensen LM, et al. Reliability of continuous arrhythmia monitoring in cryptogenic stroke patients. Stroke. 2017;48(6):1450-1455.
[13] Ziegler PD, Glotzer TV, Daoud EG. Temporal relationship of atrial tachyarrhythmias and stroke risk. J Am Coll Cardiol. 2015;66(25):2782-2790.
[14] Lubitz SA, Yin X, Rienstra M, et al. Long-term outcomes of patients with atrial fibrillation detected by implantable loop recorder. J Am Coll Cardiol. 2015;65(13):1209-1216.
[15] Ziegler PD, Rogers JD, Ferreira SW, et al. Continuous vs. intermittent monitoring to detect atrial fibrillation. Europace. 2017;19(3):371-377.