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. Microphlebectomy is a commonly used to remove large bulging veins. The procedure is sometimes referred to as ambulatory phlebectomy. Although microphlebectomy is a type of varicose vein surgery, the incisions required during the procedure are small and do not require any stitches. The risk of bleeding or infection is much lower with microphlebectomy than with older forms of vein surgery.