Regional myocardial blood flow with areperfusion catheter and an autoperfusion balloon catheter during total coronary occlusion

Christensen, Carl W.; Lassar, Tom; Daley, Lynda C.; Rieder, Michelle A.; Schmidt, Donald H.

doi:10.1016/s0002-8703(05)80011-0

Cited by 17 publications

(5 citation statements)

References 10 publications

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“…It was developed about a decade ago (30,31) to increase safety of PTCA procedures in high-risk patients and to allow for prolonged inflation times in patients with rigid stenosis. With such perfused catheters, coronary ischemic times during PTCA have been prolonged from 30-60 seconds up to 10 minutes in humans (34,36), up to 30 minutes in pigs (35), and 90 minutes in dogs (38) before the occurrence of ischemic events. Improvements in material design coupled with the availability of intravascular stents obviate the need for prolonged balloon inflation times during PTCA in most patients today.…”

Section: Discussionmentioning

confidence: 99%

“…In this context, the occurrence of thrombosis within the sideholes or the guidewire channel during prolonged inflations must be carefully monitored (34). Heparinization of the animal and frequent flushing of the catheter with heparin (500 IU/mL saline solution) should thus be assured (34,38). At the time of catheter withdrawal from the left internal carotid artery, no thrombus was observed in any of the sideholes of the catheter or lumen.…”

Section: Discussionmentioning

confidence: 99%

“…Perfused catheters maintaining blood flow during the inflation of the balloon have been shown to permit lengthening of ischemic times during percutaneous transluminal coronary angioplasty (PTCA) (30)(31)(32)(33)(34)(35)(36)(37)(38)(39). Sideholes are integrated into the catheter shaft proximal and distal to the balloon, allowing pressure-dependent passive perfusion during balloon inflation.…”

mentioning

confidence: 99%

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Autoperfused balloon catheter for intravascular MR imaging

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Ladd

Hilfiker

et al. 1999

J. Magn. Reson. Imaging

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An intravascular magnetic resonance (MR) imaging catheter for high‐resolution imaging of vessel walls was developed. The catheter design is based on an autoperfusion balloon catheter that allows passive perfusion of blood during balloon inflation. The blood enters a central lumen through multiple sideholes of the catheter shaft proximal to the balloon. A remotely tuned, matched, and actively decoupled, expandable single‐loop radiofrequency coil was mounted onto the balloon to receive intravascular MR signals. The autoperfusion rate through the catheter was determined experimentally relative to perfusion pressure. The catheter concept was evaluated in vitro on human femoral artery specimens and in vivo in the internal carotid artery of two pigs. The proposed catheter design allowed for maintained blood perfusion during the acquisition of high‐resolution intravascular images. During perfusion, image quality remained unaffected by flow, motion, and pulsatility artifacts. The availability of an autoperfused intravascular catheter design can be considered an important step toward high‐resolution atherosclerotic plaque imaging in critical vessels such as the carotid and coronary arteries. J. Magn. Reson. Imaging 1999; 9:428–434. © 1999 Wiley‐Liss, Inc.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Autoperfused balloon catheter for intravascular MR imaging

Quick

Ladd

Hilfiker

et al. 1999

J. Magn. Reson. Imaging

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“…Advances in catheter-based reperfusion technology have yielded a variety of devices that can be rapidly and safely deployed. In animal models, the 4.3F autoperfusion catheter allows regional perfusion rates of 0.63 mUmin/g tissue [8]. Other animal studies suggest they are effective in reducing ischemic damage to hearts under conditions of experimental vessel occlusion.…”

Section: Discussionmentioning

confidence: 99%

ACS RX™ flow support catheter as a temporary stent for dissection or occlusion during balloon angioplasty: Initial experience

Heuser

Mehta

Strumpf

1992

Cathet. Cardiovasc. Diagn.

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The ACS RX flow support catheter, which functions as a temporary stent, was placed successfully during four procedures in three patients who had suboptimal results following angioplasty. This investigational device allowed prolonged perfusion and supported the vessel wall when coronary blood flow was compromised, avoiding emergent coronary artery bypass graft surgery during two procedures. In the remaining procedures the device was used as a bridge to surgery. These early applications of the flow support catheter following failed balloon angioplasty suggest a rapid, effective alternative to the autoperfusion balloon when it fails or is contraindicated because of the lesion location.

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“…The in vitro flow measured in rigid glass tubes can only approximate the flow present in diseased arteries [15]. In the in vivo setting, lower net flow rates would be expected due to the phasic nature of myocardial perfusion occurring primarily during diastole.…”

Section: Limitationsmentioning

confidence: 99%