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Int J Med Sci 2009; 6(2):106-110. doi:10.7150/ijms.6.106 This issue Cite

Research Paper

Clinical Symptoms Associated with Asystolic or Bradycardic Responses on Implantable Loop Recorder Monitoring in Patients with Recurrent Syncope

Khalil Kanjwal, Yousuf Kanjwal, Beverly Karabin, Blair P. Grubb✉

Department of Medicine, University of Toledo Medical Center, Toledo OH 43614, USA

✉ Correspondence to: Blair P Grubb, MD, Director Electrophysiology Services, Division of Cardiology, Department of Medicine, Health Sciences Campus, University of Toledo Medical Center, Mail Stop 1118, 3000 Arlington Ave, Toledo OH 43614, USA

Citation:
Kanjwal K, Kanjwal Y, Karabin B, Grubb BP. Clinical Symptoms Associated with Asystolic or Bradycardic Responses on Implantable Loop Recorder Monitoring in Patients with Recurrent Syncope. Int J Med Sci 2009; 6(2):106-110. doi:10.7150/ijms.6.106. https://www.medsci.org/v06p0106.htm
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Abstract

Background: Implantable loop recorders (ILR) have been found to be useful in the diagnosis and management of syncope of unclear etiology. The clinical symptoms of abnormalities seen during ILR monitoring have not been adequately studied.

Aim: The aim of this retrospective study was to determine the clinical symptoms which were the best predictors of asystolic or bradycardic responses during ILR monitoring.

Methods: Patients with either asystole or bradycardia recorded during ILR monitoring were analyzed from our database. The clinical characteristics of these patients were compared to the patients with ILR's who did not have recorded bradycardic episodes. The episodes were characterized as being convulsive or nonconvulsive, brief (<5 minutes) or prolonged (> 5 minutes), and having had a prodrome or no prodrome.

Results: Eleven patients (4 males and 7 females; age 39 ±11years) had asystole or bradycardia on ILR monitoring. Eleven patients (2 males and 9 females; age 46±23) had no bradycardiac events. Palpitations, convulsive syncope, prolonged episode, and prodrome were present in 37% vs. 74% (P = 0.125), 62% vs. 0% (P = 0.002), 87% vs. 0% (P=0), and 73% vs. 13% (P=0.009) patients, respectively, in the asystole/bradycardia and non-bradycardia groups. In the asystole/bradycardia group eight patients had bradycardia (HR < 20) for > 10 seconds and three patients had asystole >10 seconds.

Conclusion: Convulsive syncope, prolonged loss of consciousness during syncopal episode, and absence of prodrome or aura are clinical predictors of asystole or bradycardia on ILR monitoring.

Keywords: Implantable loop recorders, bradycardia, asystole, convulsions.

Citation styles

APA
Kanjwal, K., Kanjwal, Y., Karabin, B., Grubb, B.P. (2009). Clinical Symptoms Associated with Asystolic or Bradycardic Responses on Implantable Loop Recorder Monitoring in Patients with Recurrent Syncope. International Journal of Medical Sciences, 6(2), 106-110. https://doi.org/10.7150/ijms.6.106.

ACS
Kanjwal, K.; Kanjwal, Y.; Karabin, B.; Grubb, B.P. Clinical Symptoms Associated with Asystolic or Bradycardic Responses on Implantable Loop Recorder Monitoring in Patients with Recurrent Syncope. Int. J. Med. Sci. 2009, 6 (2), 106-110. DOI: 10.7150/ijms.6.106.

NLM
Kanjwal K, Kanjwal Y, Karabin B, Grubb BP. Clinical Symptoms Associated with Asystolic or Bradycardic Responses on Implantable Loop Recorder Monitoring in Patients with Recurrent Syncope. Int J Med Sci 2009; 6(2):106-110. doi:10.7150/ijms.6.106. https://www.medsci.org/v06p0106.htm

CSE
Kanjwal K, Kanjwal Y, Karabin B, Grubb BP. 2009. Clinical Symptoms Associated with Asystolic or Bradycardic Responses on Implantable Loop Recorder Monitoring in Patients with Recurrent Syncope. Int J Med Sci. 6(2):106-110.

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