Table of Contents
How does the IABP work?
The IABP reduces the workload on your heart, allowing your heart to pump more blood. The IABP is placed inside your aorta, the artery that takes blood from the heart to the rest of the body. The balloon on the end of the catheter inflates and deflates with the rhythm of your heart.
What triggers balloon inflation in IABP?
The most commonly used triggers are the ECG waveform and the systemic arterial pressure waveform. The balloon inflates with the onset of diastole, which corresponds with the middle of the T-wave. The balloon deflates at the onset of LV systole and this corresponds to the peak of the R-wave.
What does IABP do to preload?
The IABP assists the heart indirectly by decreasing the afterload and augments diastolic aortic pressure with subsequent enhancement in diastolic blood flow resulting in better perfusion of the peripheral organ as well as a possible improvement in the coronary blood flow.
How does IABP help heart?
An IABP allows blood to flow more easily into your coronary arteries. It also helps your heart pump more blood with each contraction. The balloon is inserted into your aorta. The aorta is the very large artery leaving your heart.
How does IABP increase cardiac output?
The physiological effects of IABP support include increasing coronary perfusion pressure by increasing diastolic pressure and increasing cardiac output, primarily by a reduction in left ventricular afterload that occurs after balloon deflation just before systole.
Why is IABP filled with helium?
Helium is used to inflate the balloon as its low density means there is little turbulent flow, so the balloon can inflate quickly and deflate slowly. It is also relatively benign and eliminated quickly if there is a leak or rupture in the balloon.
How does a balloon pump reduce afterload?
The intra-aortic balloon, by inflating during diastole, displaces blood volume from the thoracic aorta. In systole, as the balloon rapidly deflates, this creates a dead space, effectively reducing afterload for myocardial ejection and improving forward flow from the left ventricle.
How does IABP increase coronary perfusion?
When does the IABP inflate?
He or she will then guide it to your aorta. From there, the IABP can start to do its work. The balloon is set to inflate when the heart relaxes. It pushes blood flow back toward the coronary arteries.
When does IABP deflate?
Inflation of the IABP should occur on the dicrotic notch of the arterial waveform. Deflation should occur prior to systole as indicated by the downward stroke. Inflation and deflation of the balloon has two major consequences: ➢ Blood is displaced to the proximal aorta by inflation during diastole.
How does balloon pump decrease afterload?
What happens during inflation of IABP?
In normal inflation-deflation timing, balloon inflation occurs at the onset of diastole, after aortic valve closure; deflation occurs during isovolumetric contraction, just before the aortic valve opens. In a properly timed waveform, as shown, the inflation point lies at or slightly above the dicrotic notch.
When does balloon pump deflate?
When the heart contracts, the balloon deflates. That allows the heart to pump more blood out to the body while using less energy. The device continues to inflate and deflate until it is removed. An IABP is a short-term treatment.
How does An IABP work?
An IABP allows blood to flow more easily into your coronary arteries. It also helps your heart pump more blood with each contraction. The balloon is inserted into your aorta. The aorta is the very large artery leaving your heart.
What is the effect of IABP on diastolic pressure?
IABP inflates at the onset of diastole, thereby increasing diastolic pressure and deflates just before systole, thus reducing LV afterload. The magnitude of these effects depends upon: (i) Balloon volume: the amount of blood dis- placed is proportional to the volume of the balloon.
What is An IABP catheter?
The IABP consists of a thin, flexible tube called a catheter. Attached to the tip of the catheter is a long balloon. This is called an intra-aortic balloon, or IAB. The other end of the catheter attaches to a computer console.
What is IABP timing in cardiac cycle?
IABP timing refers to inflation and deflation of the IAB in relation to the cardiac cycle. The cardiac cycle is monitored by continuous display of the arterial pressure waveform. As the balloon inflates at the onset of diastole, a sharp and deep ‘V’ is observed at the dicrotic notch (Fig.