N. Uriel,G. Moravsky, A. Blatt, A. Tourovski, Z. Gabara, I. Yofik, V. Danicek, A. Hendler,
R. Braunstein, R. Krakover, Z. Vered and E. Kaluski
Background: Spontaneous coronary reperfusion occurs in 7–27% of patients with ST elevation myocardial infarction, and is an independent predictor of myocardial salvage, percutaneous coronary intervention success, and improved outcome.
Objectives: To determine the optimal PCI time for patients admitted to the hospital due to STEMI with SCR.
Methods: We performed a retrospective analysis of all patients admitted to the coronary care unit between July 2002 and November 2004 with a diagnosis of STEMI with SCR.
Results: The study group comprised 86 patients. There was not a single reinfarction episode during an observation period of 6579 patient hours. Cardiac catheterization was executed early (< 24 hours from pain onset) in 26 patients and late (> 24 hours) in 55. Pre-PCI angiographic TIMI flow 2–3 was seen in > 95% in both groups. PCI was performed more frequently in the “early” group (P = 0.024), while multi-vessel coronary artery disease (P = 0.094) requiring coronary bypass surgery (P = 0.056) was observed more frequently in the “late catheterization” group. Myocardial infarction and angina pectoris at 30 days occurred more frequently in the early catheterization group (P = 0.039), however no difference in any major adverse cardiac events was detected during long-term follow-up (491 ± 245 days).
Conclusions: Reinfarction after STEMI with SCR is a rare event. Early PCI in patients with STEMI and SCR, even when executed with aggressive anti-platelet therapy, seems to result in an excess of early MACE, without any long-term advantage. Prospective randomized trials should determine the optimal PCI timing for these patients.
R. Durst, C. Lotan, H. Nassar, M. Gotsman, E. Mor, B. Varshitzki, P. Greganski, R. Jabara, D. Admon, D. Meerkin and M. Mosseri
Background: Femoral artery vascular complications are the most common adverse events following cardiac catheterization. Smaller diameter introducer sheaths and catheters are likely to lower the puncture site complication rate but may hinder visualization.
Objectives: To evaluate the safety and angiographic quality of 4 French catheters.
Methods: The study was designed to simulate real-life operator-based experience. Diagnostic angiography was performed with either 4F or 6F diagnostic catheters; the size of the catheter used in each patient was predetermined by the day of the month. Patients undergoing 4F and 6F diagnostic angiography were ambulated after 4 and 6 hours, respectively. The following technical parameters were recorded by the operator: ease of introducer sheath insertion, ease of coronary intubation, ease of injection, coronary opacification, collateral flow demonstration, and overall assessment. Adverse events were recorded in all patients and included minor bleeding, major bleeding (necessitating blood transfusion), minor hematoma, major hematoma, pseudo-aneurysm formation and arteriovenous fistula.
Results: The study group included 177 patients, of whom 91 were in the 4F arm and 86 in the 6F arm. Demographic and procedural data were similar in both groups. Seventy-seven percent of 6F and 50% of 4F procedures were evaluated as excellent (P < 0.05). This difference was attributed to easier intubation of the coronary ostium and contrast material injection, increased opacification of the coronary arteries, and demonstration of collateral flow with 6F catheters. Complications occurred in 22% of patients treated with 6F catheters and 10% of those treated with 4F catheters (P = 0.11). Of the 50 patients who switched from 4F to 6F 12% had complications. In patients undergoing diagnostic angiography, the complication rate was 10% vs. 27% (most of them minor) in the 4F and 6F groups, respectively (P < 0.05).
Conclusions: Patients catheterized with 4F have fewer complications compared with 6F diagnostic catheters even when ambulated earlier. Although 4F had a reduced quality compared to 6F angiographies, they were evaluated as satisfactory or excellent in quality 85% of the time. 4F catheters have a potential for reduced hospitalization stay and are a good option for primary catheterization in patients not anticipated to undergo coronary intervention
R. Jabara, S. Namouz, J. D. Kark and C. Lotan
Background: There is little published information on the coronary risk characteristics of Palestinian women. However, there are documented lifestyle differences as well as socioeconomic inequalities between Arab and Jewish women in Israel.
Objectives: To compare the risk factor characteristics of coronary heart disease patients in Palestinian and Israeli women.
Methods: This study included 546 women (444 Jews and 102 Arabs) aged 35-74, all residents of Jerusalem, who underwent cardiac catheterization at the Hadassah-Hebrew University Medical Center between 2000 and 2003, and were confirmed to have coronary artery disease; Data on multiple risk factors were obtained from patient interviews and files.
Results: Compared with Jewish women, Arab women had a higher prevalence of diabetes, had borne more children/were younger, had a lower socioeconomic status, consumed jess alcohol and more olive oil, suffered more passive smoking and were less physically active. On the other hand, fewer Arab women had dyslipidemia, used hormone replacement therapy and had a family history of CHD.
Conclusions: Compared to Jewish women, Palestinian Arab women in Jerusalem appear to have more diabetes and exhibit lifestyle factors that generally increase the risk for CHD. Greater attention to primary prevention in this ethnic group is needed. This study suggests the need to investigate determinants of the metabolic syndrome and the possible role of passive smoking in Arab women as well as modes of intervention via health promotion and risk factor management in this population.
S. Alroy, M. Preis, M. Barzilai, A. Cassel, L. Lavie, D. A. Halon, O. Amir, B. S. Lewis and
M. Y. Flugelman
Background: The etiology of chest pain with normal epicardial coronary arteries (cardiac syndrome X) seems to be related to endothelial cell dysfunction. Multiple factors are implicated in the pathophysiology, including evelated levels of homocysteine in the blood. Mutations in the MTHFR gene are associated with evelated levels of homocysteine.
Objectives: To test whether abnormal homocysteine metabolism is associated with syndrome X.
Methods: Forty-two women with chest pain, positive stress test and normal coronary arteries (syndrome X) and 100 asymptomatic women (controls) were studied for the C677T mutation. Vitamin B12, folic acid, and plasma levels of homocysteine were also measured. Endothelial cell function was studied in 10 patients with syndrome X and homozygosity for C677T mutation, and in 10 matched healthy controls. Folic acid (5 mg daily) was prescribed to syndrome X patients after initial measurements of ECF. Following 13 weeks of treatment, ECF and blood tests were repeated and compared to baseline measurements.
Results: Homozygosity for C677T mutation was doubled in syndrome X vs. control (33%, 14/42 vs. 16%, 16/100, P < 0.02), and homocysteine levels were increased (9.16 ± 2.4 vs. 8.06 ± 2.6 μmol/L, P = 0.02). In the 10 homozygous patients, homocysteine levels decreased significantly after treatment with 5 mg/day folic acid (10 ± 3.3 vs. 5.4 ± 1.1 µmol/L, P = 0.004). Abnormal baseline ECF improved after treatment with folic acid: flow-mediated dilatation was greater (11.3 ± 7.9% vs. 0.7 ± 4.5%, P < 0.002), as was nitroglycerin-mediated dilatation (15.2 ± 9.0% vs. 5.6 ± 6.4%, P < 0.003). Frequency of chest pain episodes was significantly reduced after 13 weeks of folic acid treatment.