I believe you are referring to a Swan-Ganz catheter with pacing capabilities.
Since you used the term "bradycardia", I'm going to presume you have at least a little medical knowledge.
First, a 'typical' Swan-Ganz catheter is a (tip situated) balloon-flotation, right heart catheter, TEMPORARILY inserted and utilized while a patient is hospitalized. It enters the body through a fairly large vein, usually in the groin region, although it may also be inserted beneath the collarbone or in the neck. It has been constructed to "float" (with the blood flow 'current') into and through the right side of the heart, the tip becoming positioned in the right or left pulmonary artery. Although it can serve as a large I.V. for delivering fluids/drugs/blood products into the right atrium for quick dilution, it is placed primarily for one reason: to monitor heart function; specifically, to assess for the presence and degree of (sometimes, temporary) heart failure present when heart injury is suspected or known, via hemodynamics (the flow of blood and the pressure it exerts).
The two main diagnostic uses for this catheter is in measuring-
1) cardiac output [CO](the amount of blood, in liters, ejected every minute), and
2) pulmonary artery wedge pressure [PAWP](also referred to as the pulmonary capillary wedge pressure [PCWP]).
The PAWP/PCWP is an indirect measurement of left atrial pressure, which (again) is an indirect measurement of left ventricle filling pressure, also called the End-Diastolic Pressure [LVEDP]. The LVEDP is meant to suggest (correlates with) the filling volume of the left ventricle, called preload.
Enough said.
Both tell the cardiologist how well the heart is pumping.
Placement of any catheter into the heart has the potential of creating an irregular/unnatural heart rhythm (dysrhythmia). Even without catheter placement, heart injuries can precipitate a dysrhythmia, temporarily. To combat this, a TEMPORARY PACEMAKER can be inserted to (usually) speed up the underlying heart RATE. The stimulating portion of the pacemaker sits in the right ventricle.
If a Swan-Ganz catheter is needed and there is a known or suspected need for a temporary pacemaker as well, some practicioners will place both items as one unit (the Swan-Ganz catheter with pacing capabilities) rather than as separate units (a Swan-Ganz catheter AND a temporary pacemaker).
2006-07-21 16:18:48
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answer #1
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answered by arrobee 2
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cardiac pacemaker
An electrical device which delivers a small stimulant shock to the heart to effect cardiac contraction at a pre-determined rate. many of today's pacemakers have two main components: the electrodes and the transducer (pulse generator). The electrodes are wires which are placed into the circulatory system and make physical contact with the heart muscle. a small electrical discharge from the pacemaker electrode stimulates the muscular wall of the heart to contract, thus pumping blood in an organised fashion. The transducer is a small device, usually implanted under the skin, that generates the electrical discharge at a pre-determined frequency. Transducers can monitor your hearts rate of contraction and deliver an electrical shock only when the heart is going too slow.
2006-07-22 05:15:39
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answer #2
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answered by gangadharan nair 7
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All pacemakers purpose is to make the pulse normal. Mainly used on patients with irregular heart beat.
with in 60-100 beats per minute
2006-07-21 19:33:46
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answer #3
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answered by roxylee11782 4
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I believe you are referring to a "Transvenous" Pacemaker. This is a temporary catheter placed into your heart to "pace" and stimulate your heart to beat until either the cause (ie: toxic drug levels like digoxin) can be corrected or until a "permanent" pacemaker can be surgically implanted to maintain a preset heart rate. Temporary or transvenous pacemakers involve placement of the catheter (the end is positioned into the chamber selected by your cardiologist) , and attachment of the external end into a pacemaker box kept along side you in your bed. The settings can be adjusted as needed (MA/sensitivity) to regulate your heart rate to maintain adequate cardiac function. Pacemakers can also be used to "override" certain rhythms that cause chaotic activity of your heart preventing it from pumping properly and maintaining adequate perfusion of blood to your body. Transvenous pacemakers are frequently used as a "bridge" to permanent pacemakers, and often after CABG (coronary artery bypass graft) to assist the heart in better pumping until the "stun" of the surgery resolves and your heart resumes it's own natural function.
2006-07-22 05:02:32
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answer #4
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answered by dulcern4u 3
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pacemaker is put in the chest area under the skin with a lead wire going to the right pulmonary artery it runs on battery and stays in
2006-07-21 14:40:10
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answer #5
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answered by lugwrench3@verizon.net 3
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