Immediate and follow-up results after long stent implantaton in diffuse long coronary lesions / 대한내과학회지

BACKGROUND: The results and restenosis after long stent implantation for diffuse long coronary lesion has not been fully evaluated. We evaluated immediate and follow-up results of single long coronary stenting for long coronary disease. METHODS: This study report on the use of follow-up examination is possible 48 patients with 50 lesions after stenting in total 70 patients with 72 lesions with long lesion. Diffuse long coronary lesion was defined as a lesion length longer than 20mm. Mean follow-up duration was 8.7+/-2.9 months and mean patients age was 58+/-10 years. Total patients was infused 8000-10000IU heparin and added bolus 3000-5000IU heparin for activating clotting time(ACT) was over 250 seconds during procedure. Restenosis was defined over 50% diameter stenosis in 6 months follow-up angiographic study. RESULTS: Angiographic success was achieved 68/70 patients(97.1%) in this study. Mean reference diameter was 3.14+/-0.1mm and baseline, final, follow-up minimal luminal diameter(MLD) was 0.6+/-0.4mm, 3.0+/-0.4mm, 1.6+/-0.3mm on each occasion and each % diameter stenosis(% DS) was 78.7+/-0.4%, 4.9+/-0.4%, 47.4%+/-0.5% present. The overall significantly increased in diabetics patients(7/21 vs 3/29 p=0.04) and in long lesion length patients(33.9+/-4mm vs 30.4+/-0.4mm p=0.02) but, clinical diagnosis and indication of stenting, lesional location, stent length, stent size, reference diameter size were not associated with restenosis rate. CONCLUSION: Single long stent implantation for diffuse long coronary lesion shown excellent success rate but high restenosis rate present. The restenosis rate was significantly associated with diabetics and lesion length Some further study for improving restenosis rate is needed.

Clinical Significance of Precordial ST Segment Depression in Acute Inferior Myocardial Infarction

BACKGROUNG AND OBJECTIVES: To evaluate the clinical and prognostic significance of precordial ST segment depression in precordial leads on admission electrocardiogram (ECG) in acute inferior myocardial infarction treated with intravenous thrombolytic therapy. We analysed about clinical and angiographic characters. MATERIALS AND METHOD: ECG findings in 50 patients with acute inferior myocardial infarction were retrospectively studied with results of coronary angiography and clinical informations. We classified all patients in two group according to the admissional ECG. Twenty nine patients (Group A) had no or or =1.0 mm ST depression in two or more precordial (V1-V6) leads were included in this group. RESULTS: In precordial ST segment depression in acute inferior myocardial infarction patients had higher plasma peak mean CK levels (1945+/-1419 vs 3547+/-2728 IU/L, p=0.027) and lower LV ejection fraction (62+/-10% vs 53+/-11%, p=0.008) and lower left ventricle global chordal shortening (0.89+/-0.71 vs -1.39+/-0.94, p=0.046) and inferior wall chordal shortening (-1.68+/-1.11 vs -2.43+/-0.74, p=0.014) and higher Killip class (1.3+/-0.8 vs 2.4+/-1.4, p=0.002) than without precordial ST segment depression patients. CONCLUSION: In conclusion acute inferior myocardial infarction with precordial ST depression patients had more extensive myocardial damage with global and inferior left ventricle severe wall motion dysfunction. Therefore, this suggests a worse prognosis in acute inferior myocardial infarction with precordial ST depression than without precordial ST depression patients. We need more aggressive diagnosis and treatment in this patients to prevent extending myocardial damage.