TY - JOUR AU - Rafie, Reza AU - Qamruddin, Salima AU - Ozhand, Ali AU - Taha, Nima AU - Naqvi, Tasneem Z. PY - 2012 DA - 2012/01/24 TI - Shortening of atrioventricular delay at increased atrial paced heart rates improves diastolic filling and functional class in patients with biventricular pacing JO - Cardiovascular Ultrasound SP - 2 VL - 10 IS - 1 AB - Use of rate adaptive atrioventricular (AV) delay remains controversial in patients with biventricular (Biv) pacing. We hypothesized that a shortened AV delay would provide optimal diastolic filling by allowing separation of early and late diastolic filling at increased heart rate (HR) in these patients. SN - 1476-7120 UR - https://doi.org/10.1186/1476-7120-10-2 DO - 10.1186/1476-7120-10-2 ID - Rafie2012 ER -