Kanber Ocal Karabay

Comparison of intracoronary versus intravenous administration of tirofiban in primary percutaneous coronary intervention

OBJECTIVE The purpose of this study was to compare the intravenous bolus dose of tirofiban with intracoronary bolus dose in primary percutaneous coronary intervention (PCI) with regard to in hospital and six months clinical outcomes and peak cardiac enzyme levels. METHODS We retrospectively examined 84 ST elevation myocardial infarction (STEMI) patients who underwent primary PCI from March 2006 to February 2007. All patients received the systemic bolus dose of tirofiban 10 mcg/kg either via intracoronary (IC) or intravenous (IV) route, followed by a 36 hours of IV infusion at 0.15 mcg/kg/min. Thirty six patients in IC group were compared with 48 patients in IV group in terms of peak cardiac enzyme levels, in-hospital and six months major adverse cardiac events (MACE) rates (death, myocardial infarction and repeat revascularization). Fishers exact test, Yates Chi-square, unpaired Students t-test and Mann-Whitney U test were used for statistical analysis. RESULTS There was no difference in cardiovascular risk profile or cardiac history between two groups. At six months the incidence of MACE was 6.25% in IV group and 11.1% in IC group (p=0.45). Peak cardiac phosphokinase (CPK) levels between IV and IC groups were also statistically non significant (2657+/-2181 U/L in IV group and 2529+/-1929 U/L in IC group) (p=0.92). CONCLUSION Intracoronary bolus application of tirofiban was not associated with reduction in MACE rates compared to intravenous administration in patients with STEMI who underwent primary PCI. Future prospective trials with higher bolus doses of IC tirofiban should addressed to clarify this issue.

Two-Year Follow-up of Sirolimus-Eluting Stents versus Paclitaxel-Eluting Stents in Acute Myocardial Infarction.

It has been shown that drug-eluting stents (DESs) significantly reduce restenosis rate when compared with bare-metal stents in a broad range of patients with coronary artery disease. However, current data are limited about the efficacy of different DESs in treatment of ST segment elevation myocardial infarction (STEMI). The aim of this study was to compare the effectiveness and safety of sirolimus-eluting stents (SESs) with paclitaxel-eluting stents (PESs) in primary percutaneous coronary intervention. We retrospectively examined 127 STEMI patients who underwent primary percutaneous coronary intervention. PES group consisted of 79 patients and SES group consisted of 48 patients. Patients were analyzed for major adverse cardiac events (MACE) and stent thrombosis (ST). The mean follow-up period was 2 years. The mean age was 53 ± 11 years in the SES group and 59 ± 11 years in the PES group (p = 0.03). Baseline and procedural characteristics were similar in the two groups except stent lengths, which was longer in the SES group. Two-year MACE rates were 8.3% in the SES group and 16.4% in the PES group (p = 0.28). Rates for ST for SES and PES groups were as follows: early ST was 2.08 versus 2.53%; late ST was 2.08 versus 2.53%; and very late ST was 2.08 versus 2.53% (p > 0.05). There were no statistically significant differences in MACE and ST rates between the SES and PES groups in the 2-year follow-up period. High ST rates detected in our study need to be clarified with future prospective and randomized clinical trials.

The incidence of coronary anomalies on routine coronary computed tomography scans.

Summary Objective This study aimed to assess the incidence of coronary anomalies using 64-multi-slice coronary computed tomography (MSCT). Methods The diagnostic MSCT scans of 745 consecutive patients were reviewed. Results The incidence of coronary anomalies was 4.96%. The detected coronary anomalies included the conus artery originating separately from the right coronary sinus (RCS) (n = 8, 1.07%), absence of the left main artery (n = 7, 0.93%), a superior right coronary artery (RCA) (n = 7, 0.93%), the circumflex artery (CFX) arising from the RCS (n = 4, 0.53%), the CFX originating from the RCA (n = 2, 0.26%), a posterior RCA (n = 1, 0.13%), a coronary fistula from the left anterior descending artery and RCA to the pulmonary artery (n = 1, 0.13%), and a coronary aneurysm (n = 1, 0.13%). Conclusions This study indicated that MSCT can be used to detect common coronary anomalies, and shows it has the potential to aid cardiologists and cardiac surgeons by revealing the origin and course of the coronary vessels.

Broken guidewire fragment.

Advances in technology and greater operator experience have increased the success rate of percutaneous coronary intervention while lowering the complication rates. The broken guidewire is a rare complication of percutaneous coronary intervention. We present this rare complication in a patient who was medically treated.

A rare congenital coronary artery anomaly: Anomalous of the left anterior descending coronary artery arising from the right coronary artery and review of the literature

Most coronary anomalies are clinically asymptomatic. However some of them may present with chest pain, syncope, heart failure and sudden death. Anomalous left anterior descending artery arising from right coronary artery is a very rare coronary anomaly.

Anomalous Origin of the Left Main Coronary Artery from the Right Coronary Artery with a Preaortic Course

We report the case of a 51-year-old woman who presented with stable angina pectoris and Canadian Cardiovascular Society class II functional capacity. An electrocardiogram during a treadmill exercise test showed substantial ST-segment depression in the inferolateral leads. Coronary angiograms revealed an anomalous origin of the left main coronary artery from the opposite sinus of Valsalva and an interarterial course between the ascending aorta and pulmonary artery. Although this phenomenon is dangerous, the patient refused further examination. We discuss the diagnosis and treatment of patients who have an anomalous origin of a coronary artery from the opposite sinus of Valsalva.

Concomitant anterior and inferior myocardial infarctions.

Acute multicoronary occlusion is an extremely rare clinical and angiographic finding. Prompt diagnosis and treatment are extremely important. Herein, we present a 38-year-old man suffering from concomitant anterior and inferior myocardial infarctions due to simultaneous total occlusion of both the left anterior descending and right coronary arteries.

A new stenting technique for bifurcation lesions a nine-patient case series.

This study describes and reports preliminary outcomes using kissing T‐stenting and small protrusion (K‐TAP), a novel modification of traditional T‐stenting and small protrusion (TAP).

A very rare combination of four coronary artery anomalies in a patient with acute inferior myocardial infarction.

We present a combination of four rarely seen coronary anomalies: double right coronary artery originating from the right coronary sinus (RCS) and left main coronary artery, respectively, and separate origination of the left anterior descending (LAD) artery, circumflex artery (Cx), and septal perforator artery from the RCS. These anomalies were encountered in a 46-year-old male patient who had a previous diagnosis of spina bifida occulta and renal pelvis and presented with the complaint of chest pain of two-hour onset. He had no conventional coronary risk factors and no history of chest pain or syncope. Electrocardiography showed ST-segment elevation and cardiac enzyme levels were elevated. Coronary angiography was performed with the diagnosis of acute inferior myocardial infarction, which showed a severe stenosis in the mid portion of the LAD and total occlusion in the proximal part of the Cx. Balloon dilatation and stent implantation were performed for the Cx lesion and TIMI 3 flow was achieved. One month after the procedure, percutaneous coronary intervention was repeated for the LAD lesion and patency was achieved with balloon dilatation and stenting. Since visualization of all the coronary anomalies mentioned above posed some difficulties during coronary angiography, cardiac computed tomography angiography was also used to reveal the ostia and the courses of coronary arteries. This combination of four rare coronary anomalies has not been reported before.

Percutaneous revascularization of total or subtotal left main occlusion in the setting of acute myocardial infarction.

OBJECTIVES We evaluated the effect of percutaneous coronary intervention (PCI) for total or subtotal left main coronary occlusion (LMCO) in the setting of acute myocardial infarction (AMI), together with clinical features, outcome, and prognostic determinants. STUDY DESIGN Between March 2008 and June 2010, PCI was performed for total or subtotal thrombotic LMCO in eight patients with AMI. All the patients were males with a mean age of 55.5 years (range 25 to 75 years). The primary endpoints were the occurrence of major adverse cardiac events including death from any cause, nonfatal myocardial infarction, and target lesion revascularization. RESULTS Five patients were admitted with anterior AMI and three patients with non-ST elevation AMI. Seven patients were in cardiogenic shock. The mean symptom duration was 195 min (range 15 min to 10 hr). Predilatation was performed in six patients, and postdilatation was performed in two patients. Six patients received a single stent with the cross-over technique and the simultaneous kissing stent technique was used in one patient. Mortality occurred in three patients (37.5%). Two deaths developed in the catheterization laboratory, one before stent implantation. One patient died six days after the procedure due to subacute stent thrombosis. After a mean follow-up of 79 weeks (range 27 to 152 weeks), two patients underwent elective bypass surgery because of restenosis, while the rest of the patients remained free of any cardiac event. CONCLUSION Percutaneous coronary intervention in patients with LMCO complicated by AMI is feasible and effective, and offers a good mid-term outcome for hospital survivors.