conclusions switching ams off may increase biventricular pacing in some patients. case presentation in this case series, we present a combination of far field sensing and automatic mode switching (ams) in six patients. it is found that this combination causes ventricular sensing (vs) episodes with wide qrs and no synchronization. we turn off the ams and alleviate the problem. introduction cardi...

t-wave oversensing occurs when the counter starts giving dual beeps for every cardiac cycle instead of one. this usually happens when the monitoring lead displays a tall t wave, which is also sharp. r wave sensing algorithms of the devices do not sense t wave because the slow rate of the t wave is much less than that of the r wave. but the slow rate of t waves may change with time and also beca...

background: differences in the quantity and distribution of coronary veins between patients with ischemic and non-ischemic cardiomyopathy might affect the potential for the left ventricular (lv) lead targeting in patients undergoing cardiac resynchronization therapy (crt). in the current study, we assessed and compared the suitability of the coronary venous system for the lv lead placement in i...

background: several competing geometric and hemodynamic factors are suggested as contributing mechanisms for functional mitral regurgitation (mr) in heart failure patients. we aimed to study the relationships between the severity of mr and the qrs duration and dyssynchrony markers in patients with ischemic or dilated cardiomyopathy. methods: w e prospectively evaluated 251 heart failure patient...

objective: we sought to determine the usefulness of the 99mtc-mibi (mibi) washout rate for the evaluation of steroid therapy in cardiac sarcoidosis (cs). methods: eleven cs patients underwent mibi myocardial spect both before and 6 months after initiating steroid therapy. the washout rate (wor) of mibi was calculated using early and delayed polar map images. the washout score (wos) of mibi was ...

conclusions mothers with sle should be screened and closely followed up during pregnancy for the development of fetal atrioventricular (av) block. case presentation a term infant with fetal bradycardia, detected at the 23rd gestational age, was diagnosed with chb due to nls and was successfully treated with a permanent epicardial pacemaker. the patient was reported here due to rarity of the pro...

to date, stem cell therapy is a novel treatment method especially in irreversible end organ damage. we present a case of a 21-yr-old man, who admitted in sina hospital, tehran university of medical sciences, iran with open left femur fracture following car accident. developing fat emboli syndrome led to cardiac arrest. despite of efforts to optimize supportive care and neuroprotective strategie...

background many types of cardiovascular complications such as; cardiac arrhythmias, impaired cardiac function, myocardial ischemia and decreased left ventricular function, have been attributed to interferon therapy. objectives the aim of this study was to evaluate the effects of combination therapy pegylated interferon and ribavirin on left ventricular systolic and diastolic functions in patien...

atrial fibrillation (af) is the most common complication of coronary artery bypass graft surgery (cabg). the reported incidence of af after cabg varies from 20% to 40%. postoperative af (poaf) is associated with increased incidence of hemodynamic instability, thromboembolic events, longer hospital stays, and increased health care costs. a variety of pharmacological and nonpharmacological strate...