OBJECTIVE This study tested whether the ease of learning to use human-machine interfaces of in-vehicle information systems (IVIS) can be assessed at standstill. BACKGROUND Assessing the attentional demand of IVIS should include an evaluation of ease of learning, because the use of IVIS at low skill levels may create safety-relevant distractions. METHOD Skill acquisition in operating IVIS wa...

Sinus node dysfunction (SND) is commonly encountered in the clinic. The clinical phenotype ranges from asymptomatic sinus bradycardia to complete atrial standstill. In some cases, sinus bradycardia is associated with other myocardial conditions such as congenital abnormalities, myocarditis, dystrophies, cardiomyopathies as well as fibrosis or other structural remodeling of the SA node.1-8 Altho...

an H-Q of 40 msec (normal, 35-55 msec), and an AP threshold of 1.2 ma. Postmortem examination revealed total left circumflex occlusion proximal to the sinoatrial (SA) nodal artery takeoff, SA nodal arteriolosclerosis without infarction, and left-sided cardiac skeletal sclerosis (LSCSS) disrupting the penetrating portion of the His bundle and the LBB. Intracardiac recordings in the patient with ...

Introduction Atrial standstill (AS), a rare arrhythmogenic condition, is defined by (1) the absence of P waves in surface and intracavitary electrocardiograms (ECGs), (2) the absence of A waves in jugular venous pulse and right atrial pressure tracings, (3) the presence of a supraventricular type QRS complex, (4) the immobility of the atria on fluoroscopy, and (5) the inability to stimulate the...

Background—The D1275N SCN5A mutation has been associated with a range of unusual phenotypes, including conduction disease and dilated cardiomyopathy, as well as atrial and ventricular tachyarrhythmias. However, when D1275N is studied in heterologous expression systems, most studies show near-normal sodium channel function. Thus, the relationship of the variant to the clinical phenotypes remains...

BACKGROUND The D1275N SCN5A mutation has been associated with a range of unusual phenotypes, including conduction disease and dilated cardiomyopathy, as well as atrial and ventricular tachyarrhythmias. However, when D1275N is studied in heterologous expression systems, most studies show near-normal sodium channel function. Thus, the relationship of the variant to the clinical phenotypes remains...

OBJECTIVES/HYPOTHESIS To understand the leading causes for process errors and delays in the otolaryngology operating room and recognize the impact of process errors and delays on patient safety, operating room resources and hospital costs. STUDY DESIGN Prospective, observational study. METHODS A 4-week study was conducted during 1 calendar month in 2012, evaluating 23 elective otolaryngolog...

introduction: we report a 56-year-olds female with supraventricular arrhythmia due acute ischemic stroke without structural heart disease. case description: a patient presented with sudden onset of lethargy, right hemiplegia, and global aphasia. there was previous history of stroke 1 year ago presented with left hemiplegia that recovered completely during 10 days. there was no history of comorb...

In auriculo-ventricular block the degree of impairment of conductivity is often found to be inconstant. Even at a time when the rhythm appears clinically to be normal, however, a cardiogram will usually show prolongation of the P-R interval. Only rarely is the conduction normal between the attacks, and the term " paroxysmal heart block " may then appropriately be applied. Reports of 18 such cas...