Catheterization and cardiovascular diagnosis
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Cathet Cardiovasc Diagn · Jun 1998
Case ReportsRetrieval of "old" foreign bodies from the cardiovascular system in children.
Several techniques have been developed to retrieve catheter and guide wire fragments that have embolized to the heart and pulmonary vasculature. In most instances, retrieval of the embolized fragments is performed soon after the event has occurred. ⋯ The embolized catheter and guide wire fragments were removed without any complications. We also describe the techniques used for their removal, and the problems encountered during the removal of these "old" foreign bodies.
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Cathet Cardiovasc Diagn · Mar 1998
Clinical TrialCerebral blood flow velocities monitored by transcranial Doppler during cardiac catheterizations in children.
Transcranial Doppler (TCD) was used to evaluate brain circulation during cardiac catheterizations in 32 children requiring pulmonary (n=10) or aortic balloon dilatations (n=2), ductus arteriosus coil insertions (n=5), or angiography (n=15). Cerebral blood flow velocity (CBFV) in the middle cerebral artery was measured before (baseline), during, and after each procedure (mean+/-95%ci). High-intensity transient signals (HITS) were also detected during these maneuvers. ⋯ Pediatric cardiac catheterization may impose transient fluctuations in brain perfusion as indicated by TCD, but their clinical implications are uncertain. CBFV changes during balloon angioplasty emphasize the importance of rapid inflation/deflation cycles. TCD can monitor such changes and evaluate preventive measures.
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Cathet Cardiovasc Diagn · Oct 1997
Coronary artery stenting for suboptimal PTCA results in acute myocardial infarction in patients treated with Abciximab: early and six-month outcome.
Emergent percutaneous transluminal coronary angioplasty (PTCA) is an effective treatment for acute myocardial infarction. However, occasionally results of angioplasty are suboptimal due to coronary dissection or elastic recoil, leading to a high chance of recurrent ischemia. Coronary stents are occasionally employed in such settings, but a high incidence of stent thrombosis was noted by early investigators when stents were placed into areas of active thrombus formation. ⋯ Three patients experienced recurrent ischemic events within the first 6 months. Two of these events were due to infarct vessel restenosis. We conclude the combined use of coronary artery stents and abciximab for suboptimal PTCA results during acute myocardial infarction is associated with a low incidence of culprit vessel recurrent ischemic events within 6 months of intervention.
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Cathet Cardiovasc Diagn · Oct 1997
Case ReportsUtility of magnetic resonance imaging in a patient with anomalous origin of the right coronary artery, acute myocardial infarction, and near-sudden cardiac death.
A 46-year-old female presented with an acute myocardial infarction and cardiac arrest. Coronary angiography revealed an anomalous origin of the right coronary artery coursing between the aorta and pulmonary artery. Magnetic resonance imaging confirmed the life-threatening nature of this anomaly and led to referral for surgical revascularization.
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Cathet Cardiovasc Diagn · Apr 1997
Case ReportsTransseptal approach to aortography and carotid artery stenting in pulseless disease.
We report on a patient with pulseless disease (Takayasu's arteritis) in whom access to the central circulation by extremity arterial cannulation was not possible due to absent pulses in all four limbs. The transseptal approach was used for aortography, bilateral selective carotid angiography, and successful elective stent deployment in the right common carotid artery.