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What is a ventricular assist device?
A ventricular assist device (VAD) is a mechanical pump used for temporary blood circulation support.
What is a Assistance devices?
A ventricular assist device (VAD) is a mechanical pump used for temporary blood circulation support.
Why are IABP's often used?
Ease of insertion for placement in the aorta makes the intra-aorta balloon pump (IABP) the most often used ventricular assist device
What does a air pump look like?
a cilinder that has a pump and and long hose
Ventricular assist device?
DefinitionVentricular assist devices (VAD) help your heart pump blood from the main pumping chamber of your heart (the left ventricle) to the rest of your body. These pumps may be implanted in your body or connected to a pump outside your body.Alternative NamesVAD; RVAD; LVAD; BVAD; Right ventricular assist device; Left ventricular assist device; Biventricular assist device; Heart pump; Left ventricular assist system; LVAS; Implantable ventricular assist deviceDescriptionA ventricular assist device has three parts:A pump. The pump weighs 1 to 2 pounds. It is placed in your belly if you will need it permanently, or it may also be used outside of your body when you are waiting for a permanent pump or a heart transplant.An electronic controller. The controller is like a small computer that controls how the pump works.Two batteries. The batteries are carried outside your body. They are connected to the pump with a cable that goes into your bellyYou will need general anesthesia when your VAD is implanted. This will make you unconscious and unable to feel pain during the procedure.During surgery to implant the pump, the heart surgeon opens the middle of your chest with a surgical cut and then separates your breastbone. This allows the surgeon to reach your heart. Next, the surgeon will make space for the pump under your skin and tissue in the upper part of your belly wall. Then, the surgeon will place the pump in this space.A tube will connect the pump to your heart. Another tube will connect the pump to your aorta or one of your other major arteries. Another tube will be passed through your skin to connect the pump to the controller and batteries.The VAD will take blood from your left ventricle through the tube that leads to the pump. Then the device will pump the blood back out to one of your arteries and through your body.Surgery usually lasts 4 to 6 hours.Why the Procedure Is PerformedYou may need a VAD if you have severe heart failure that cannot be controlled with medicine or a special pacemaker. You may be on a waiting list for a heart transplant. Some patients who get a VAD are very ill and may already be on a heart-lung bypass machine.Not every patient with severe heart failure is a good candidate for this procedure.RisksRisks for this surgery are:Blood clots in the legs that may travel to the lungsBreathing problemsHeart attack or strokeAllergic reactions to the anesthesia medicines used during surgeryInfectionsBefore the ProcedureMost people will already be in the hospital for treatment of their heart failure.After the ProcedureMost people who are put on a VAD spend up to 5 days in the intensive care unit after surgery. You may stay in the hospital anywhere from 2 to 8 weeks after you have had the pump placed. During this time you will learn how to care for the pump.OutlookA VAD may help people who have heart failure live longer. It can also help improve quality of life.ReferencesNaka Y and Rose EA. Assisted circulation in the treatment of heart failure. In: Zipes DP, Libby P, Bonow RO, Braunwald E, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 8th ed. St. Louis, Mo; WB Saunders; 2007:chap. 28.Slaughter MS, Rogers JG, Milano CA, et al. Advanced heart failure treated with continuous-flow left ventricular assist device. N Engl J Med. 2009 Dec 3;361(23):2241-51.
Which wave is larger the one for atrial contraction or the one for ventricular contraction?
The wave for ventricular contraction is larger than the wave for atrial contraction. This is because the ventricles have thicker muscle walls and contract more forcefully in order to pump blood out to the body.
What does the water pump on 1993 Ford Tempo look like?
it looks like a water pump that a 1993 ford tempo has.
Which phase of the ECG indicates ventricular excitation and contraction?
The QRS complex on an ECG indicates ventricular excitation and contraction. It represents depolarization of the ventricles as they prepare to contract and pump blood out to the rest of the body.
What does the fuel pump switch 97 blazer look like?
It does not have a fuel pump switch. It has a relay and a fuse for the fuel pump.
How many times is a LVAD expected to beat in a 65 year old female patient?
A Left Ventricular Assist Device (LVAD) does not beat like a natural heart; instead, it continuously pumps blood to assist the heart's function. The pumping rate of an LVAD typically ranges from 70 to 100 beats per minute, depending on the specific device settings and the patient's condition. Therefore, for a 65-year-old female patient, the LVAD would be expected to pump blood at this rate rather than beat like a heart.
What is the most frequent initial rhythm witnessed in sudden cardiac arrest?
The most common abnormal heart rhythm preceding cardiac arrest is ventricular fibrillation. In this dysrhythmia, the ventricular walls contract randomly and rapidly, and do not effectively pump blood.
How long is the ventricular contraction period?
The ventricular contraction period, also known as systole, typically lasts about 0.3 seconds in a healthy adult heart. This is the phase when the ventricles contract to pump blood out of the heart.
