Defibrillation is the definitive treatment for the life-threatening cardiac arrhythmias , ventricular fibrillation and pulseless ventricular tachycardia . Defibrillation consists of delivering a therapeutic dose of electrical energy to the affected heart with a device called a defibrillator . This depolarizes a critical mass of the heart muscle, terminates the arrhythmia, and allows normal sinus rhythm to be reestablished by the body's natural pacemaker , in the sinoatrial node of the heart. Defibrillators can be external, transvenous, or implanted, depending on the type of device used or needed. Some external units, known as automated external defibrillators (AEDs), automate the diagnosis of treatable rhythms, meaning that lay responders or bystanders are able to use them successfully with little, or in some cases no training at all.
Aneurysmectomy <ul><li>Aneurysmectomy is a therapeutic surgical procedure performed to repair a weak area in the aorta. The aorta is the largest artery in the body and the main blood vessel leading away from the heart. </li></ul><ul><li>The purpose of aneurysmectomy is to repair an aortic aneursym that is likely to rupture if left in place. Aneurysmectomy is indicated for an aortic aneurysm that grows to at least 2 in(5 cm) or for an aortic aneurysm of any size that is symptomatic, tender, or enlarging rapidly. </li></ul>
An aortic aneurysm develops and grows slowly. It rarely produces symptoms and is usually only diagnosed by accident during a routine physical exam or on an x ray or ultrasound done for another reason. As the aneurysm grows larger, the risk of bursting with no warning, which causes catastrophic bleeding, rises. A ruptured aortic aneurysm can cause sudden loss of a fatal amount of blood within minutes or it can leak in a series of small bleeds that lead within hours or days to massive bleeding. A leaking aortic aneurysm that is not treated is always fatal. Aneurysmectomy is performed to repair the two most common types of aortic aneurysms: abdominal aortic aneurysms that occur in the abdomen below the kidneys, and thoracic aortic aneurysms that occur in the chest. It is major surgery performed in a hospital under general anesthesia and involves removing debris and then implanting a flexible tube (graft) to replace the enlarged artery. Aneurysmectomy for an aneurysm of the ascending aorta (the first part of the aorta that travels upward from the heart) requires the use of a heart-lung machine that temporarily stops the heart while the aneurysm is repaired. Aneurysmectomy requires a one-week hospital stay; the recovery period is five weeks
Doppler Ultrasonography <ul><li>An imaging technology that uses high-frequency sound waves to visualize underwater objects, topography, boundaries between layers, and currents. It is often used to locate underwater vehicles on the ocean floor. The sound waves are broadcast, and the timing and frequency shift of their echoes are analyzed in much the same manner as in sonar to produce an image or map of the phenomena or objects under investigation. Also called ultrasound . </li></ul>
Doppler Ultrasonography <ul><li>Harmless, Painless, and widely available. </li></ul><ul><li>It’s purpose is to detect the direction, velocity, and turbulence of blood flow. It is frequently used to detect problems with heart valves and arteries. </li></ul><ul><li>It is useful in the work up of stroke patients in assessing blood flow in the abdomen or legs and in viewing the heart monitor. </li></ul>
<ul><li>There are many procedures that are to the benefit of people. Not all are harmful or surgical but it is for the better! </li></ul>