Hypokinesis is heart wall movement impairment and that effects the strength of left ventricle (pumping chamber) and reduces the ejection fraction (EF normal is 50 t0 70% of the blood pumped with each heartbeat. Global hypokinesis is impairment that isn't localized to a specific area.
Dilated LV indicates the heart chamber has enlarged stretching the outer heart wall. This condition will impair heart wall movement and decrease the EF. About 7 years ago, I had a dilated LV and an EF below 30%, and with medication (reduced the heart's workload) and the dilated LV returned to normal size and EF is pumping normally.
The underlying cause for the dilated LV can be a workload that burdens the heart and as a consequence the heart enlarges to compensate. The workload can be high resistance due to constricted vessels. A vasodilator can relax the vessels and the heart pumps against less resistence. Also, the problem can be ischemic (lack of blood flow) heart wall impairment due to blocked coronary vessels and heart cells lack a good supply of blood oxygen. Sometimes reopening the vessel with a stent and/or medication to increase the vessels can be the remedy.
Thanks for sharing, and if you have any follow-up questions you are welcome to respond. Take care.