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Ventricular tachycardia (V-tach or VT) is a cardiovascular disorder in which fast heart rate occurs in the ventricles of the heart. [3] Although a few seconds of VT may not result in permanent problems, longer periods are dangerous; and multiple episodes over a short period of time are referred to as an electrical storm.
Merging of a joint involves removing the joint and surgically "fusing" the joint's end so that the two bones effectively form one solid bone. This surgery stops all movement at that joint and therefore eliminates the pain. [1] The benefit of fusion is pain relief and the downside is elimination of motion at the fused joint, which can hinder ...
Focal V-tach is where a specific area of the ventricle has abnormal automaticity. The automaticity rate is the frequency at which a cell sends out a signal, so for the pacemaker cells in the SA node the rate is between about 60 and 100 signals per minute, resulting in 60 to 100 beats per minute, let’s just say 60 beats per minute, so one beat ...
Ashman beats are described as wide complex QRS complexes that follow a short R-R interval preceded by a long R-R interval. [3] This short QRS complex typically has a right bundle branch block morphology and represents an aberrantly conducted complex that originates above the AV node, rather than a complex that originates in either the right or left ventricle.
Mallet finger is acquired due to injury to the thin extensor tendon that functions to straighten the end (DIP) joint of a finger. [8] Jamming of the finger induces a rupture of the extensor tendon or a broken bone at the tendon's site of attachment. [9] This results in a droopy and crooked appearance of the end joint of the finger, resembling a ...
Cardiac aberrancy is a type of disruption in the shape of the electrocardiogram signal, representing abnormal activation of the ventricular heart muscle via the electrical conduction system of the heart. Normal activation utilizes the bundle of His and Purkinje fibers to produce a narrow (QRS) electrical signal.
This technique/repair requires transplant sections of bone and cartilage. [10] First, the damaged section of bone and cartilage is removed from the joint. Then a new healthy dowel of bone with its cartilage covering is punched out of the same joint and replanted into the hole left from removing the old damaged bone and cartilage.
Despite this low number of MSC's, isolated bone marrow nucleated cells implanted into degenerated human peripheral joints have shown some promise for joint repair. [16] As the number of MSC's that can be isolated from bone marrow is fairly limited, most research in cartilage regeneration has focused on the use of culture-expanded cells.