A left posterior fascicular block (LPFB), also known as left posterior hemiblock (LPH), is a condition where the left posterior fascicle, which travels to the inferior and posterior portion of the left ventricle, does not conduct the electrical impulses from the atrioventricular node. The wave-front instead moves more quickly through the left anterior fascicle and right bundle branch, leading to a right axis deviation seen on the ECG. Definition
The American Heart Association has defined a LPFB as:
Frontal plane axis between 90° and 180° in adults
rS pattern in leads I and aVL
qR pattern in leads III and aVF
QRS duration less than 120 msThe broad nature of the posterior bundle as well as its dual blood supply makes isolated LPFB rare. See also
Left bundle branch block
Left anterior fascicular block

References
Further reading
Ma FS, Ma J, Tang K,  et al. (March 2006). "Left posterior fascicular block: a new endpoint of ablation for verapamil-sensitive idiopathic ventricular tachycardia". Chin. Med. J. 119 (5): 367–72. doi:10.1097/00029330-200603010-00003. PMID 16542578. == External links ==
The future areas of research may concentrate on the optimal exercise prescription and long-term health benefits of exercise. The effect of physical training on cognition also may be studied further. The ability to walk independently in their community, indoors or outdoors, is important following stroke. Although no negative effects have been reported, it is unclear if outcomes can improve with these walking programs when compared to usual treatment. Other therapy methods
Some current and future therapy methods include the use of virtual reality and video games for rehabilitation. These forms of rehabilitation offer potential for motivating people to perform specific therapy tasks that many other forms do not. While virtual reality and interactive video gaming are not more effective than conventional therapy for improving upper limb function, when used in conjunction with usual care these approaches may improve upper limb function and ADL function. There are inadequate data on the effect of virtual reality and interactive video gaming on gait speed, balance, participation and quality of life. Many clinics and hospitals are adopting the use of these off-the-shelf devices for exercise, social interaction, and rehabilitation because they are affordable, accessible and can be used within the clinic and home.Mirror therapy is associated with improved motor function of the upper extremity in people who have had a stroke.Other non-invasive rehabilitation methods used to augment physical therapy of motor function in people recovering from a stroke include transcranial magnetic stimulation and transcranial direct-current stimulation. and robotic therapies.