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ISSN: 1734-1922
Archives of Medical Science
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6/2020
vol. 16
 
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Neurology
abstract:
Letter to the Editor

Repeated magnetic resonance imaging and Cyberknife therapy for Parkinson’s disease in a patient with a pacemaker and epicardial leads

Andrzej Kułach
1
,
Tomasz Skowerski
1
,
Zbigniew Gąsior
1

1.
Department of Cardiology, School of Health Sciences, Medical University of Silesia, Katowice, Poland
Arch Med Sci 2020; 16 (6): 1470–1471
Online publish date: 2020/11/02
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Patients with pacemakers are commonly advised that they cannot undergo magnetic resonance imaging (MRI) scanning, even though it is possible and safe to scan the majority of pacemakers. Epicardial leads, however, are considered absolute contraindication to magnetic resonance imaging [1].
We report a case of a 68-year-old male patient with a history of atrioventricular (AV) second degree block who had a dual chamber pacemaker (Medtronic Sensia) with endocardial leads implanted in 2009. Two months later due to an exit block, he was admitted for right ventricular (RV) lead replacement. Then, due to thrombosis of the left brachiocephalic vein, the endocardial leads were removed and the patient had epicardial leads implanted (Medtronic CapSure Epi 4968, steroid-eluting bipolar leads) with a pacemaker placed in the abdominal wall. Since then the device parameters had been stable.
In 2014 the patient was diagnosed with Parkinson’s disease. In May 2017, because of therapy resistance he was qualified for Cyberknife therapy, and MRI had to be performed to plan the procedure. Due to se­vere neurological symptoms, despite contraindications, we decided to proceed with an MRI (GE Optima). We did not observe any complications during/after MRI. The device parameters remained unchanged (Table I). In April 2018 the pacemaker was replaced with an Ensura MRI Surescan system because of the end of battery life. The epicardial leads were left intact. A few months after Cyberknife the Parkinson’s disease symptoms relapsed and another MRI was suggested to plan deep brain stimulation. In August 2018 another MRI was performed. The device parameters also remained unchanged. During both MRI studies a cardiologist, radiologist and MRI physicist were present. The patient was pacemaker dependent (VP 95–98%, escape rhythm < 40 bpm). The pacemaker was programmed to DOO mode 90 bpm with all anti-tachycardia functions switched off and reprogrammed to baseline settings after the study. Heart rate and oxygen saturation were monitored continuously with a pulse oximeter. Study parameters, including magnetic field, sequences and specific absorption rate (SAR), are reported in Table I.
Epicardial leads are rarely used in adult patients these days and are considered in case of infective complications or when vascular access problems occur (e.g. venous thrombosis). They are thought to be less durable, more prone to malfunction and have higher thresholds....


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