OBJECTIVES To examine the effect on circadian variation of out of hospital cardiac arrest according to the underlying aetiology and presenting rhythm of arrest, and to explore strategies that might help to improve survival outcome using circadian variation. DESIGN Population based retrospective study. SETTING County of Nottinghamshire with a total population of 993 914 and an area of 2183 k...

An example of reversed reciprocal rhythm is presented with associated 2:I heart block and other abnormalities of conduction. The electrocardiograms have been analysed and compared with an earlier electrocardiogram in which sinus rhythm was present. Despite dramatic electrocardiographic abnormalities, evidence is offered which suggests that there may have been only a small alteration in activity...

Thrombus formation in the left atrium is rare in patients in sinus rhythm. In three patients with extensive cardiac amyloidosis transthoracic echocardiography showed large atrial thrombi in or protruding into the body of the left atrium during sinus rhythm. Doppler studies showed no A wave on mitral inflow. Severe atrial and ventricular infiltration by amyloid may have resulted in mechanical at...

Methods Between January 2000 and November 2009, we enrolled 508 consecutive patients (284 females, aged 55 ± 12 years) who underwent the maze procedure with other cardiac operations. The early postoperative AF burden was measured by continuous monitoring of the cardiac rhythm during hospitalization. The post procedural rhythm was checked with a serial electrocardiogram every year. The mean foll...

We used time series analysis to characterize the relationships among the arterial pulse (AP) and the cardiac-related and 10-Hz rhythms in sympathetic nerve discharge (SND) of urethane-anesthetized cats. We found that 10-Hz activity was more tightly coupled to the AP than to the cardiac-related rhythm. These data support the view that the dynamic coupling of AP and the 10-Hz rhythm in SND involv...

Primary cardiac arrhythmias are often caused by defects, predominantly in the genes responsible for generation of cardiac electrical potential, i.e., cardiac rhythm generation. Due to the variability in underlying genetic defects, type, and location of the mutations and putative modifiers, clinical phenotypes could be moderate to severe, even absent in many individuals. Clinical presentation an...

Gebber, Gerard L., Sheng Zhong, Craig Lewis, and Susan M. Barman. Defenselike patterns of spinal sympathetic outflow involving the 10-Hz and cardiac-related rhythms. Am J Physiol Regulatory Integrative Comp Physiol 278: R1616–R1626, 2000.—Frequencyand time-domain analyses were used to compare the effects of stimulation of the defense region of the midbrain periaqueductal gray (PAG) on the 10-Hz...

Introduction: Few data can be found about cardiac arrest in the intensive care unit outside reference centers in third world countries. Objective: To study epidemiology and prognostic factors associated with cardiac arrest in the intensive care unit (ICU) in an average Brazilian center. Methods: Between June 2011 and July 2014, 302 cases of cardiac arrest in the intensive care unit were pro...

Cardiac rhythm abnormality is a common finding in patients with leptospirosis. Relative bradycardia, atrial fibrillation, flutter and ventricular premature beats are the arrhythmias seen In present case, patient presented septic shock had fibrillation. Further evaluation revealed hypokalemic acute kidney injury severe metabolic acidosis. The fibrillation reverted to sinus after correction of hy...