John D. Jackman

Duke University, Durham, North Carolina, United States

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Publications (7)33.28 Total impact

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    ABSTRACT: Balloon angioplasty of long coronary artery narrowings has been associated with a lower rate of acute success, and a higher rate of acute complications and restenosis than that observed for short narrowings. Angioplasty catheters with longer length balloons (30 and 40 mm) are now available, and the objective of this study was to determine the acute and long-term success for patients with long coronary artery narrowings treated with these longer balloons. All patients with long narrowings (> or = 10 mm) treated with long balloons at 1 institution over a 1-year period were identified (93 narrowings in 89 patients), and acute and long-term outcomes were carefully documented. Procedural success (residual stenosis < or = 50%) was 97%. Abrupt closure occurred in 6% and major dissection in 11% of narrowings. Clinical success (procedural success without in-hospital death, bypass surgery or myocardial infarction) was achieved in 90% of patients. Repeat catheterization was performed in 61 patients (76% of those eligible), and restenosis was found in 50 to 55%, depending on the definition used. The treatment of long coronary artery narrowings using angioplasty catheters with longer balloons leads to high rates of acute success. However, there is a high rate of restenosis. New interventional devices for long lesions should be compared with long balloons in a randomized controlled trial.
    No preview · Article · Jun 1993 · The American Journal of Cardiology
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    ABSTRACT: Angioplasty in the setting of poor left ventricular function may involve coronary anatomy with special challenges to the technique of the operator and the safety of the patient. Spontaneous coronary aneurysms involve a disruption of the tissue of the vessel and the linear geometry of the lumen. This case reports the dilatation of a stenosis traversing a large spontaneous aneurysm in a patient with severe left ventricular dysfunction. Using a novel guidewire technique to traverse the lesion and a perfusion balloon catheter to slowly dilate it, an excellent angiographic and clinical result was achieved. (J Interven Cardiol 1992; 5:232–330)
    No preview · Article · Dec 1992 · Journal of Interventional Cardiology

  • No preview · Article · Aug 1992 · American Heart Journal
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    ABSTRACT: To describe outcomes of patients sustaining an acute myocardial infarction complicated by mitral regurgitation managed with contemporary reperfusion therapies. Inception cohort case study. Long-term follow-up was obtained in 99% of all patients. University referral center. A series of 1,480 consecutive patients presenting between April 1986 and March 1989 who had emergency cardiac catheterization within 6 hours of infarction. Fifty patients were found to have moderately severe or severe mitral regurgitation. Mortality; follow-up cardiac catheterization in patients with regurgitation. Acute ischemic moderately severe to severe (3+ or 4+) mitral regurgitation was associated with a mortality of 24% at 30 days (95% CI, 12% to 36%), 42% at 6 months (CI, 28% to 56%), and 52% at 1 year (CI, 38% to 66%); multivariable analysis identified 3+ or 4+ mitral regurgitation as a possible independent predictor of mortality (P = 0.06). Patients with mitral regurgitation tended to be female, older, and to have cerebrovascular disease, diabetes, and preexisting symptomatic coronary artery disease. A physical examination did not identify 50% of patients with moderately severe to severe regurgitation. Acute reperfusion with thrombolysis or angioplasty did not reliably reverse valvular incompetence. In this observational study, the greatest in-hospital and 1-year mortalities were seen in patients reperfused with emergency balloon angioplasty, whereas patients managed medically or with coronary bypass surgery had lower mortalities. Moderately severe to severe (3+ or 4+) mitral regurgitation complicating acute myocardial infarction portends a grave prognosis. Acute reperfusion does not reduce mortality to levels experienced by patients with lesser degrees of mitral regurgitation nor does it reliably restore valvular competence.
    No preview · Article · Aug 1992 · Annals of internal medicine
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    ABSTRACT: Prolonged balloon inflation with or without autoperfusion techniques is a common initial approach to major dissection or abrupt occlusion after percutaneous transluminal coronary angioplasty (PTCA). To assess such a strategy in the setting of unsuccessful angioplasty, 40 patients who underwent prolonged balloon inflations of greater than 20 minutes between January and July of 1991 after initially unsuccessful angioplasty were studied. These patients (median age 59 years) underwent PTCA for progressive or unstable angina (16[40%]), symptomatic or asymptomatic residual stenosis after myocardial infarction (10[25%]), acute myocardial infarction (3[8%]), stable angina (3[8%]), reinfarction (2[5%]), and other indications (6[15%]). The significant stenoses were primarily in the proximal and midportions of the right coronary (53%), left anterior descending (30%) and left circumflex (17%) coronary arteries. Before prolonged balloon inflation, the longest single inflation was 11 +/- 6 minutes and the total time of all inflations was 17 +/- 8 minutes (mean +/- standard deviation). Stenosis was reduced from 91 +/- 9 to 68 +/- 16% before prolonged inflation. After prolonged balloon inflation of 30 +/- 9 minutes, the residual stenosis was 47 +/- 21% (p = 0.0001 vs value before prolonged inflation). Furthermore, improvements in the appearance of filling defects or dissections, or both, occurred in 19 patients (48%). Procedural success was obtained in 32 of 40 patients (80%). Coronary bypass grafting was performed in 8 patients (20%): 4 after unsuccessful PTCA (3 emergently) and 4 electively after initially successful PTCA. Although 5 patients had creatine kinase-MB elevations greater than 20 IU/liter after the procedure, only 1 sustained a Q-wave myocardial infarction. There were no deaths in the hospital.(ABSTRACT TRUNCATED AT 250 WORDS)
    No preview · Article · Jul 1992 · The American Journal of Cardiology
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    ABSTRACT: We report the a case of hugging balloons through an 8-French guiding catheter to stabilize an ectatic right coronary artery following failed thrombolytic therapy in the setting of acute myocardial infarction. Angiographic follow-up at 1 wk and 6 mo revealed persistent vessel patency.
    No preview · Article · Sep 1991 · Catheterization and Cardiovascular Diagnosis
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    ABSTRACT: There are limited data regarding percutaneous transluminal coronary angioplasty (PTCA) in patients aged >80 years, a rapidly expanding population that has a 20% prevalence of symptomatic coronary artery disease.1–3 Two studies have reported relatively low success rates, high procedural morbidity and mortality, and no data on restenosis,4,5 whereas a third reported a higher success rate, but had limited angiographic follow-up—only in symptomatic patients.6 We therefore undertook a study to assess the early and long-term outcome of octogenarian patients treated with PTCA.
    No preview · Article · Aug 1991 · The American Journal of Cardiology