Introduction: In radiation therapy with high-energy photon beams (E > 7 MeV) neutrons are generated mainly in LINACs head thorough (γ, n) interactions. These neutrons affect the shielding requirements in radiation therapy rooms. According to the protocol TG-34, photon absorbed dose of 10Gy can cause permanent damage to the pacemaker and the dose of 2Gy can make minor changes in...

background: the advancement of technology in recent decades has been lead to use the electrophysiology cardiac devices. although these devices are used increasingly, but the frequency of subclinical infection is unknown. we investigate bacterial infections due to implantable cardioverter defibrillator (icds) in patients with endocarditis. m aterials and methods: population of the study was cons...

A 70-year-old man with diabetes mellitus, systemic arterial hypertension, and over 7 years of intermittent congestive symptoms due to a nonischemic dilated cardiomyopathy, with a left ventricular ejection fraction of 20%, as well as chronic kidney disease, with a current serum creatinine of 4.24 mg/dL, had an implantable cardioverter/defi brillator/ pacemaker lead placed through the left subcla...

a 76-yr-old man with unipolar ventricular pacemaker, previously implanted in the right ventricular apex, presented with syncopal attack and twitching of the right pectoralis muscle. he finally was diagnosed as having twiddler's syndrome. the patient had a pulse rate of 36/min and cannon waves in the neck veins. chest radiography showed a dislodged pacing lead completely wrapped around the pulse...

BACKGROUND The ability to apply standard and interoperable solutions for implementing and managing medical registries as well as aggregate, reproduce, and access data sets from legacy formats and platforms to advanced standard formats and operating systems are crucial for both clinical healthcare and biomedical research settings. PURPOSE Our study describes a reproducible, highly scalable, st...

Newand old-world tropical electric fish lack a common electrical ancestor, suggesting that the mechanisms of signal generation and recognition evolved independently in the two groups. Recent research on convergent designs for electrogenesis and electroreception has focused on the structure of electric organs, the neural circuitry controlling the pacemaker driving the electric organ, and the neu...

Leadless cardiac pacemakers (LCP) appear to have lower risk of device infection and bacteremia compared transvenous systems. Heart transplant patients are at increased for cardiovascular implantable electronic complications, but there is limited data on the safety effectiveness LCPs in these patients; this especially true when repeat myocardial biopsies necessary. To report outcomes performance...

Atrioventricular nodal block (AVB) is a common complication following transcatheter aortic valve replacement (TAVR). The timing of permanent pacemaker (PPM) implantation with respect to conduction disease and recovery not well established. purpose this study determine the optimal PPM for AVB TAVR. Patients were retrospectively reviewed AB by ECG progress note data in electronic medical record T...

background: permanent pacemakers provide effective relief of symptoms and are life-saving in patients with symptomatic heart block. implantable cardioverter defibrillators (icd) are also increasingly recognized as life-saving tools in various groups of patients with malignant ventricular tachyarrhythmias. methods: as part of the “world survey on pacemaker and icd implantations”, a survey of all...