The ventricular action potential has a long refractory period so that the mechanical response of the ventricle will be discrete; one coordinated mechanical response per electrâ¦ical activation sequence. Otherwise, with additional electrical stimuli, the mechanical responses would summate producing a prolonged contraction.
Microfracture Technique. Overview. Microfracture is a surgical technique that has been developed to treat chondral defects, which are damaged areas of articular cartilage of the knee. It is a common procedure used to treat patients with full thickness damage to the articular cartilage that goes all the way down to the bone.
Microphlebectomy (also known as ambulatory phlebectomy or stab avulsion) is a technique to remove varicose veins. In this procedure,several tiny cuts (incisions) are made in the skin through which the varicosed vein is removed. Stitches usually are not required. This procedure typically does not require a stay in the hospital.