Related Experiment Video

Updated: Aug 29, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
16:40

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation

Published on: February 28, 2012

Value of the implantable loop recorder for the management of patients with unexplained syncope

Lucas Boersma1, Lluís Mont, Alessandro Sionis

  • 1Cardiology Department, St. Antonius Hospital, Heart Lung Center Utrecht, PO 2500, 3430 EM Nieuwegein, The Netherlands. l.boersma@antonius.net

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
|December 31, 2003
PubMed

Insights

The implantable loop recorder (ILR) effectively identifies cardiac arrhythmias causing unexplained syncope. This tool is more reliable than head-up tilt testing or electrophysiological studies for diagnosing syncope in patients with recurrent episodes.

Area of Science:

  • Cardiology
  • Electrophysiology

Background:

  • Recurrent syncope is frequently unexplained despite comprehensive evaluations.
  • Cardiac arrhythmias are a common but often elusive cause of syncope.

Purpose of the Study:

  • To evaluate the diagnostic utility of the implantable loop recorder (ILR) in patients with unexplained recurrent syncope.
  • To compare the effectiveness of ILR with traditional diagnostic methods like head-up tilt testing (HUTT) and electrophysiological study (EPS).

Main Methods:

  • A prospective study involving 43 consecutive patients with unexplained syncope.
  • Patients underwent extensive cardiological screening and subsequent monitoring with an ILR.
  • Analysis of ILR data to correlate recorded events with syncope recurrence and identify underlying arrhythmias.

Main Results:

  • The ILR successfully identified the cause of syncope in a significant portion of patients, including paroxysmal atrial fibrillation (PAF), ventricular tachycardia (VT), and various forms of bradycardia requiring pacemakers.
  • In patients with true syncope recurrence, ILR detected arrhythmias in 8 out of 15 cases.
  • Traditional screening methods showed abnormalities but lacked predictive value for syncope.

Conclusions:

  • The implantable loop recorder (ILR) is a valuable and effective tool for establishing an arrhythmic cause of unexplained syncope.
  • ILR offers superior diagnostic yield compared to HUTT and EPS in this patient population.
  • Early implantation of ILR can expedite diagnosis and guide appropriate treatment for recurrent syncope.
Abstract

More Related Videos

Surgical Implant Procedure and Wiring Configuration for Continuous Long-Term EEG/ECG Monitoring in Rabbits08:36

Surgical Implant Procedure and Wiring Configuration for Continuous Long-Term EEG/ECG Monitoring in Rabbits

Published on: January 24, 2025

Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction14:19

Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction

Published on: October 14, 2016

Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...
Cardiac Catheterization IV: Nursing Management01:26

Cardiac Catheterization IV: Nursing Management

Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...