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Biomedical subjects

Harel Gilutz

Publications and source records attributed to Harel Gilutz.

At least 19 recordsLinked to original sources

The effect of statin therapy on infection-related mortality in patients with atherosclerotic diseases.

OBJECTIVE: Statins have pleiotropic effects that are independent of their lipid-lowering ability. We have previously shown that prior statin therapy is associated with a decreased risk of severe sepsis in patients admitted with acute bacterial infection. The aim of this study was to determine whether statin therapy is associated with a decreased risk of infection-related mortality. DESIGN: A prospective, observational, population-based study. SETTING: Tertiary university medical center. PATIENTS: Using a computerized database, 11,490 patients with atherosclerotic diseases were identified and followed for up to 3 yrs. Two groups of patients were compared: those receiving statins in the final month before follow-up termination and those who were not. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The primary outcome was infection-related mortality. Of the 11,362 patients included in the final analysis, 5,698 (50.1%) belonged to the statin group. Median follow-up was 19.8 months (interquartile range, 14.3-33.3). The risk of infection-related mortality was significantly lower in the statin compared with the no-statin group (0.9% vs. 4.1%), reflecting a relative risk of 0.22 (95% confidence interval, 0.17-0.28). Stepwise Cox proportional hazard survival analysis including a propensity score for receiving statins revealed that the protective effect of statins adjusted for all known potential confounders remained highly significant (hazard ratio, 0.37; 95% confidence interval, 0.27-0.52). CONCLUSIONS: Therapy with statins may be associated with a reduced risk of infection-related mortality. This protective effect is independent of all known comorbidities and dissipates when the medication is discontinued. If this finding is supported by prospective controlled trials, statins may play an important role in the primary prevention of infection-related mortality.

Atherosclerosis↗

Benefit of direct ambulance to coronary care unit admission of acute myocardial infarction patients undergoing primary percutaneous intervention.

BACKGROUND: Early reperfusion therapy in ST-segment elevation myocardial infarction (STEMI) patients improves left ventricular (LV) function and survival. However, emergency room (ER) triage may unnecessarily delay this time-dependent treatment. We sought to determine whether direct admission of STEMI patients from the mobile intensive care units to the intensive coronary care unit (ICCU), bypassing the ER, can shorten the time intervals for primary PCI (PPCI) and improve prognosis. METHODS: All STEMI patients who underwent PPCI between Jan-2002 to Nov-2005 were included. Baseline, clinical and time interval parameters were compared between groups. Mortality rates were obtained through the population register. RESULTS: Of 533 admissions, 115 (21%) were admitted directly to the ICCU. These patients were younger (mean (+S.D.) age of 58+13 years) than patients admitted via the ER (62+/-13 years, P<0.01) and had a lower proportion of women (9% vs. 22%, P<0.01), hypertension (45% vs. 62%, P<0.01) and diabetes (15% vs. 27%, P=0.01). Directly admitted patients had a substantially shorter median pain-to-balloon time (210 vs. 247 min, P=0.02) as well as s significantly shorter door-to-balloon time (70 vs. 94 min, P<0.01), a difference that was particularly pronounced during daytime (55 min vs. 90 min, P<0.01). There were no significant differences in LV function at 24 h as assessed by echocardiography or infarct size as determined by peak creatine kinase levels. We observed a trend towards reduced 30-day (5.2% vs. 9.8%, P=0.12) and 1-year (11.1% vs. 16.1%, P=0.25) mortality in directly admitted patients. CONCLUSIONS: Directly admitted STEMI patients differ from patients admitted via the ER; Direct ICCU admission, based on a pre-hospital ECG, can substantially shorten time to treatment.

Aged↗

Association of statin therapy and the risk of atrial fibrillation in patients with a permanent pacemaker.

BACKGROUND: Recent studies have shown conflicting results regarding a protective effect of statin therapy on atrial fibrillation (AF). HYPOTHESIS: We sought to determine whether statins are effective in reducing the risk of developing arrhythmia in a cohort of 264 patients (49% women, mean age [+/-standard deviation] 71 [+/-12] years) with permanent pacemakers who are at high risk for AF. METHODS: All patients who underwent implantation of a permanent pacemaker over a 3-year period were eligible for inclusion in the study. We excluded patients with AF at implantation, incomplete medication information, or less than a yearly follow-up visit. Atrial fibrillation was diagnosed by ECG documentation, pacemaker interrogation, and Holter monitoring. Statin treatment was verified through a central pharmacy-computerized database (for most patients) or by chart review. Of the 264 patients, 36% had coronary artery disease. RESULTS: Atrial fibrillation developed in 70 patients (26%) at a median of 359 days post pacemaker implantation. The incidence rate for the first occurrence of AF post pacemaker implantation among patients treated and not treated with statins was 10.5 versus 9.8 events per 100 patient-years, respectively (p = 0.81). Even after controlling for baseline differences, the hazard ratio (HR) for developing AF among statin users did not achieve statistical significance (HR = 0.59 [0.31-1.12]). CONCLUSIONS: We could not demonstrate that statin therapy had a protective effect against the risk of AF in patients implanted with a permanent pacemaker. The low prevalence of coronary artery disease in our patients may partly explain our results.

Aged↗

[Diabetics with normal coronary arteries: clinical features and prognosis].

BACKGROUND: Diabetic patients comprise a large proportion of patients referred for coronary angiography. Only a minority of these patients will be found to have normal coronary arteries. AIM: To characterize diabetic patients who have angiographically normal coronary arteries. METHODS: Case-control study based on a computerized database. RESULTS: Using our computerized database, 13,342 consecutive patients referred for coronary angiography were identified. Diabetes mellitus was diagnosed in 24% of cases. Angiographically normal coronary arteries were found in 151 (5%) and 1228 (12%) of diabetic and non-diabetic patients, respectively (p<0.01). Diabetic patients with angiographically normal coronary arteries were matched with 155 diabetic patients who were catheterized on the same day but were found to have coronary artery disease. The median follow-up period was 1,774 days. The age of the diabetic patients with normal coronary arteries and diabetic patients with coronary artery disease was 5710 and 6410 years old respectively (p<0.01). A total of 39% and 60% of diabetic patients with normal coronary arteries and with coronary artery disease respectively were males, (p<0.01). Dyslipidemia was diagnosed in 66 (43%) of the diabetic patients with normal coronary arteries and 87 (57%) of the diabetic patients with coronary artery disease (P<0.01). After controlling for age and sex, the finding of normal coronary arteries was associated with decreased mortality (OR: 0.47, 95% CI 0.23 to 0.95). CONCLUSIONS: In diabetic patients referred for angiography it is unusual to find angiogrtaphically normal arteries. These patients have a relatively benign prognosis, as opposed to diabetic patients with evident coronary disease.

Aged↗

Clinical characteristics and prognostic factors in patients with complicated acute coronary syndromes requiring prolonged mechanical ventilation.

Patients with acute coronary syndromes (ACSs) may develop serious multiorgan complications and require prolonged intensive care. Our aim was to characterize and identify factors that are associated with outcomes in these patients. We retrospectively identified 267 consecutive patients admitted to the coronary care unit for an ACS who required >3 days of mechanical ventilation. Multiple clinical and laboratory variables were correlated with mortality. Patients' ages were 68.3 +/- 10.9 years (mean +/- SD) and 165 (62%) were men. Seventy-six patients (29%) died within 30 days of admission, and the 1 year mortality was 46%. Moderate or severe left ventricular systolic dysfunction was found in 72% of the patients. Eighty-nine patients (33.3%) required vasopressors, of whom 64 (72%) did not survive 30 days. Among 127 patients who required antibiotics (48.3%), 30-day mortality was 53% compared with 4% among patients who did not require antibiotics (p <0.001). The 30-day mortality among patients who received both antibiotics and vasopressors was 64 of 87 patients (74%), and the 1-year mortality in this subgroup was 86.2%. Parameters found to be independent predictors of 30-day mortality were (in descending order): vasopressor requirement, use of antibiotics, peripheral vascular disease, ST-elevation myocardial infarction, renal failure, obesity and Killip class on admission. In conclusion, mortality among patients who require prolonged mechanical ventilation after an ACS is substantial. The main independent predictors of with mortality are the severity of heart failure and the presence of co-morbidities.

Aged↗

Grade 3 ischemia on admission and absence of prior beta-blockade predict failure of ST resolution following thrombolysis for anterior myocardial infarction.

BACKGROUND: ST segment resolution (STR) is a strong predictor of outcome following thrombolysis. If failure of STR could be predicted on admission, better selection of treatment may be possible. Among patients given reperfusion, those with terminal QRS distortion (grade 3 ischemia) have larger infarcts, but the mechanism underlying this association is unclear. Whether grade 3 ischemia on admission can predict STR is unknown. METHODS: We studied 180 consecutive patients given thrombolysis for a first anterior acute myocardial infarction (AMI). Multiple variables available on admission were analyzed as predictors of STR at 1, 2, and 24 h and as predictors of the need for rescue percutaneous coronary intervention (PCI). RESULTS: Multivariate predictors of failure of STR were: for 1 h: extent of ST elevation (OR: 1.09 [1.01-1.18]); for 2 h: no previous use of beta-blockers (OR: 4.71 [1.56-13.98]) and grade 3 ischemia (OR: 6.77 [3.27-13.95]); for 24 h: previous use of aspirin (OR: 6.70 [1.31-34.01]) and grade 3 ischemia (OR: 29.44 [7.30-118.1]). Grade 3 ischemia had a strong positive predictive value for failure of STR at 1 and 2 h and was the strongest predictor of the need for rescue PCI. CONCLUSIONS: Grade 3 ischemia on admission is the strongest independent predictor of failure to achieve myocardial reperfusion after thrombolysis. This association may underlie the larger infarcts associated with grade 3 ischemia. Other predictors of reperfusion failure are the extent of ST segment elevation, prior use of aspirin and no prior use of beta-blockers.

Adrenergic beta-Antagonists↗

Increased long term rates of stent thrombosis and mortality in patients given clopidogrel as compared to ticlopidine following coronary stent implantation.

BACKGROUND: Clopidogrel has largely replaced ticlopidine following coronary stent implantation. Recently, concern has been raised regarding the possibility of excess long term mortality in patients given clopidogrel rather than ticlopidine following coronary stenting. METHODS: We studied 1519 consecutive patients who underwent 2020 stent implantations and were discharged on dual antiplatelet regimens of either aspirin and ticlopidine or aspirin and clopidogrel given for up to 4 weeks. Thrombotic stent occlusion (TSO) was defined as ST elevation myocardial infarction in the stented artery territory associated with angiographic demonstration of complete stent occlusion. Mortality follow up was obtained for all patients by linkage to the Population Register. Follow up duration was 12 months. RESULTS: TSO occurred in 37 stents at a median of 29 days post procedure. Of these cases, six occurred in the ticlopidine group (0.7%) and 31 in the clopidogrel group (2.8%) (p<0.01). The median time to TSO was 34 days and 28 days in ticlopidine and clopidogrel treated patients, respectively (p<0.01). After controlling for multiple demographic, clinical and angiographic variables clopidogrel (vs. ticlopidine) treatment remained the sole predictor of TSO (OR: 5.4, 95% CI=1.2-24.1, p=0.028). Of even more concern, clopidogrel treatment was associated with an increased risk of 1 year mortality (OR: 1.8, 95% CI=1.2-2.8). CONCLUSIONS: Long term follow up after stent implantation in patients receiving the traditional 2-4 weeks course of dual antiplatelet therapy reveals increased rates of TSO and mortality in patients given clopidogrel as opposed to ticlopidine. Whether longer treatment with clopidogrel will change these observations deserves further study.

Aged↗

No gender difference in the clinical management and outcome of unstable angina.

BACKGROUND: Women with myocardial infarction have a less favorable prognosis than men. Many studies have indicated gender bias in the evaluation and treatment of myocardial infarction, but few data exist concerning these aspects in the management of unstable angina. OBJECTIVE: To investigate gender differences in the baseline characteristics, clinical presentation, treatment and prognosis of women with unstable angina. METHOD: Data were collected prospectively as part of the Acute Coronary Syndromes Israeli Survey in 2000 at Soroka University Medical Center. In-hospital management and 2 year follow-up were monitored for 226 consecutive patients with unstable angina admitted to our medical center during February and March 2000. RESULTS: Women were older (71 +/- 12 vs. 66 +/- 12, P = 0.006), more diabetic (41.3% vs. 34.5%, not significant) and hypertensive (76.3% vs. 64.6%, P = 0.07). Women presented more often with atypical chest pain (18.8% vs. 7.5%, P = 0.038). Heparin, aspirin and angiotensin-converting enzyme inhibitor were delivered equally, but more beta-blockers were administered to women (88.5% vs. 75.7%, P = 0.02) and more statins to men (48.1% vs. 35.4%, P = 0.07). Angiography rates were similar (17.7% vs. 19.6%). Similar management was documented during the 2 year follow-up. Re-hospitalization rates were similar (53.3% of women and 63.7% of men, NS). Men had a tendency to develop acute myocardial infarction more often (9.6% vs. 2.7%, P = 0.06) and to develop peripheral vascular disease (3.7% vs. 0%, P = 0.09), and they had a non-significant higher rate of coronary artery bypass graft (6.7% vs. 1.3%, P = 0.08). No gender difference was found in angiography (14.7% of women vs. 16.3% of men) or percutaneous intervention (13% vs. 16.7%). At 2 years there was no gender-related difference in mortality (13.3% of women vs. 16.3% of , NS). Kaplan-Meier analysis for event-free survival after 2 years showed no gender difference in survival. Multi-regression analysis showed that gender was not a prognostic factor for survival. CONCLUSIONS: We found no major difference in the management of men and women with unstable angina. Although men showed a tendency to suffer more major cardiac events, their 2 year prognosis was the same as for women.

Aged↗

What have the new definition of acute myocardial infarction and the introduction of troponin measurement done to the coronary care unit? Impacts on admission rate, length of stay, case mix and mortality.

OBJECTIVE: To assess the impact of the new American College of Cardiology/European Society of Cardiology definition of acute myocardial infarction (AMI) and the introduction of troponin measurement on the coronary care unit (CCU). METHODS: This was a retrospective cohort study performed in a tertiary care university hospital. All admissions to the CCU during the year before (period 1, year 2000, n = 1,134) and the year after (period 2, year 2002, n = 1,360) the introduction of troponin measurement and the new AMI definition were studied. We studied baseline characteristics, case load, distribution of admission diagnoses, management and outcome of patients in the two periods. RESULTS: There was a 20% increase in the number of CCU admissions, driven solely by a 141% increase in the burden of non-ST elevation AMI (NSTEMI) (p < 0.01). This increase was not a mere reflection of a change in diagnostic criteria, as the overall burden of non-ST elevation acute coronary syndromes (ACS) (NSTEMI + unstable angina) increased by 46%, suggesting referral of many more patients to the CCU. Despite a 42% increase in the number of angiograms performed, the proportion of ACS patients who had an angiogram declined. AMI patients in period 2 were older and had higher rates of coronary risk factors but had a higher chance of receiving a guideline-based therapy. Length of CCU stay decreased by a whole day for all ACS patients. 30-day mortality for AMI patients did not change significantly. CONCLUSIONS: The new AMI definition had a dramatic impact on the CCU case load, case mix and length of stay and on the ability to provide early coronary angiography.

Aged↗

Can enoxaparin safely replace unfractionated heparin during coronary intervention in acute coronary syndromes?

BACKGROUND: Enoxaparin has gained wide acceptance in patients with acute coronary syndromes. However, there is uncertainty regarding management of patients who require coronary intervention while on enoxaparin. Some physicians withhold the morning dose of enoxaparin prior to coronary intervention while others switch patients to unfractionated heparin. Both methods do not provide optimal anticoagulation in the hours preceding intervention. There are no published controlled data to assess the safety of coronary intervention using enoxaparin alone in patients with acute coronary syndromes. METHODS: We prospectively compared enoxaparin to unfractionated heparin during coronary angiography and intervention. Sixty four patients admitted to the coronary care unit (CCU) were given enoxaparin twice daily, including on the morning of procedure. Coronary angiography and intervention were performed without additional unfractionated heparin. The control group comprised of 52 patients admitted to Internal Medicine for an acute coronary syndrome. These were also given enoxaparin but the morning dose was withheld and unfractionated heparin was used during procedure. RESULTS: Patients in both groups had similar baseline characteristics. No significant differences were observed between the two groups in procedural success rate, complications or bleeding. One year follow up showed similar rates of hospitalization and mortality. CONCLUSION: Enoxaparin seems to offer safe and effective procedural anticoagulation in patients undergoing percutaneous intervention for acute coronary syndromes. Patients given enoxaparin can probably have coronary intervention without interruption of enoxaparin treatment and without additional procedural anticoagulation. These findings require confirmation in larger, randomized trials.

Aged↗

Improved procedural results in coronary thrombosis are obtained with delayed percutaneous coronary interventions.

We investigated the efficacy of percutaneous coronary intervention (PCI) in coronary thrombotic lesions according to the timing of the procedure. Eighty-two patients who underwent immediate PCI (IPCI) were compared to 24 patients who underwent PCI 4.9 3 days after the diagnostic catheterization [delayed PCI (DPCI)]. DPCI was associated with a lower rate of thrombus-related angiographic events (4% versus 27%; p < 0.03), including coronary embolism (0% versus 7%; p = NS), no-reflow phenomenon (0% versus 8%; p = NS), acute closure (0% versus 10%; p = NS), stent thrombosis (4% versus 1%; p = NS) and residual thrombus (0% versus 17%; p = 0.03). No differences were seen in the hospital clinical outcome, including non-fatal myocardial infarction (4% versus 9%; p = NS), death (4% versus 0%; p = NS) or major bleeding (4% versus 3%). Delayed PCI after pharmacological treatment is a safe and efficient strategy of treatment for coronary thrombus.

Abciximab↗

Psychological factors correlate meaningfully with percent-monocytes among acute coronary syndrome patients.

Recent research demonstrates the importance of inflammatory parameters in the etiology and prognosis of the acute coronary syndrome (ACS). This study explored relations between psychological factors and immunological parameters routinely measured among ACS patients. Forty-two ACS patients completed questionnaires assessing perceived-control, emotional support, hostility, and life-events 2-4 days after hospitalization. Data on total leukocytes and percentages (%) of monocytes, %neutrophils, and %lymphocytes upon admission to hospital were collected from computerized medical charts as well as various biomedical information and risk-factors (e.g., diagnosis, left-ventricle-LV functioning, smoking, and hypertension). Of all significant biomedical variables, LV-function and arrival-time correlated uniquely with total leukocytes. Controlling for LV-function and arrival-time, hostility and life-events positively correlated with %monocytes, and perceived-control and emotional-support inversely correlated with %monocytes. Emotional-support was positively correlated and life-events were negatively correlated with %neutrophils. Macrophages play a pivotal role in plaque instability, the trigger of an ACS. This initiating role, and our finding of a relationship between recruitment of monocytes and a poor psychosocial profile, predictive of ACS, are consistent with a PNI component in the pathophysiology of ACS.

Acute Disease↗

Reperfusion arrhythmias during coronary angioplasty for acute myocardial infarction predict ST-segment resolution.

BACKGROUND: Despite early recanalization of an occluded infarct-related artery, myocardial reperfusion may remain impaired due to microvascular injury. Reperfusion arrhythmias may indicate successful microvascular reperfusion. METHODS: Microvascular reperfusion was assessed prospectively in 42 consecutive patients with ST-segment elevation acute myocardial infarction (AMI) by evaluation of the resolution of ST-segment elevation (<50% of initial level) immediately after successful coronary angioplasty. Patients were divided into two groups: those with ST resolution (n=24) and those without ST resolution (n=18). The presence of reperfusion arrhythmias immediately after recanalization was recorded. RESULTS: Patients with ST resolution were younger (54+/-12 years compared with 64+/-17 years, P=0.04), their pain-to-recanalization time was shorter (195+/-87 min compared with 294+/-179 min, P=0.05), they were less often diabetic (13% compared with 24%, P=0.05) and were more often given IIb/IIIa inhibitors (58% compared with 22%, P=0.02). Reperfusion arrhythmias were observed in 15 out of 24 patients with ST resolution (62%) but in only one out of 18 without ST resolution (5%) (P<0.01). Reperfusion arrhythmias included accelerated idioventricular rhythm, 13 (81%); multifocal ventricular premature beats, two (13%); and ventricular tachycardia, one (6%). The sensitivity and specificity of reperfusion arrhythmias for ST resolution were 62 and 95%, respectively. In a logistic regression model including age, time to treatment, diabetes, use of IIb/IIIa inhibitors and reperfusion arrhythmias, only the latter was found to be an independent predictor of ST resolution (P<0.01). CONCLUSION: Reperfusion arrhythmias following coronary angioplasty for AMI are a highly specific marker for ST resolution and may indicate successful microvascular reperfusion.

Adult↗

[The use of cardiac troponins in acute coronary syndromes].

In patients with acute coronary syndromes cardiac troponins are sensitive markers of myocardial damage. The troponin complex comprises subunits C, T and I and is a major component in the process of myocyte contraction and relaxation. The T and I subunits have cardiac isoforms with distinct specific immunologic properties which distinguish them from similar subunits of non-cardiac muscle tissue. The high sensitivity and specificity of cardiac troponins make them the preferred biochemical markers for diagnosing acute myocardial infarction and for the triage of patients admitted with chest pain without ST segment elevation on the E.K.G. There is a correlation between cardiac troponin levels and prognosis in patients with acute coronary syndromes. In addition to their prognostic role, cardiac troponins play a role in selecting patients for contemporary treatments. Thus, their level can identify the patients most likely to benefit from treatments such as low molecular-weight heparin, IIb/IIIa receptor blockers and early angiography and coronary intervention. Recently, the American heart Association, the European Heart Society and the Israel Cardiology Society have published guidelines for the use of cardiac troponins. This review summarizes the current data regarding the use of cardiac troponins in the acute coronary syndromes.

Anticoagulants↗

Acute myocardial infarction: patient selection for reperfusion with coronary angioplasty.

BACKGROUND: Despite the clinical advantages of mechanical reperfusion in the treatment of acute myocardial infarction, widespread use of percutaneous transluminal coronary angioplasty has been limited by a lack of human and institutional resources. OBJECTIVE: To evaluate the feasibility of a PTCA-based reperfusion strategy for AMI patients selected according to high risk clinical criteria. METHODS: The study group included 110 patients selected for mechanical reperfusion out of 1,080 AMI patients according to the following criteria: hemodynamic disturbance (40%), large anterior wall MI (54%), contraindication to thrombolysis (15%), previous MI (13%), re-infarction (4.5%), non-diagnostic electrocardiogram (0.9%), and unsuccessful thrombolysis (30%). RESULTS: Cardiogenic shock was present in 23% of the cases and cardiac arrest with prolonged resuscitation in 8%. The cohort 30 day mortality rate was 15%. The 30 day mortality rate for patients without cardiogenic shock was 6.3%. CONCLUSIONS: Selection of high risk patients who would benefit most from mechanical reperfusion appears feasible, resulting in low mortality rates when compared with those in the literature. Widespread implementation of well-defined selection criteria should promote better utilization of the limited resources available for primary PTCA.

Aged↗

Triage disposition of patients with acute myocardial infarction--ACSIS 2000.

BACKGROUND: In the emergency department the physician is often confronted with the decision of where to hospitalize a patient presenting with chest pain and a possible acute myocardial infarction--in the cardiac care unit or in the internal medicine ward. OBJECTIVE: To characterize the clinical factors involved in the triage disposition of patients hospitalized with AMI in Israel to either CCUs or IMWs and to determine to what extent the perceived probability of ischemia influenced the disposition decision. METHODS: During a 2 month nationwide prospective survey in the 26 CCUs and 82 of the 94 IMWs in Israel, we reviewed the charts of 1,648 patients with a discharge diagnosis of AMI. The probability of ischemia at admission was determined retrospectively by the Acute Coronary Ischemia Time-Insensitive Predictive Instrument. Co-morbidity was coded using the Index of Coexistent Diseases. RESULTS: The ACI-TIPI score for patients admitted to CCUs or to IMWs was 76.2% and 57.7% respectively (P < 0.001). Multivariate analysis showed that young patients with a high probability of ischemia and low co-morbidity or functional impairment were more likely to be hospitalized in CCUs than in IMWs. CONCLUSION: In Israel, the factors that strongly influence the initial triage disposition of AMI patients to CCUs or IMWs are age, perceived probability of ischemia, status of co-morbid conditions and functional impairment.

Age Distribution↗

Door to balloon and door to needle: temporal trends in delays to reperfusion.

BACKGROUND: Reperfusion practices have changed markedly over the last few years with the introduction of primary percutaneous coronary intervention. This technique has gained growing popularity in Israel, but little published data are available regarding the delays to primary PCI in real life in this country. OBJECTIVES: To examine temporal trends in time to reperfusion achieved in a large tertiary center over 6 years. RESULTS: Between 1997 and 2002, 1,031 patients were admitted to our hospital with ST elevation myocardial infarction. Of these, 62% underwent thrombolysis and 38% primary PCI. The proportion of patients referred for primary PCI increased steadily, from 14% in 1997 to 68% in 2002. Door to treatment time among patients referred for thrombolysis or primary PCI was 54 +/- 42 and 117 +/- 77 minutes, respectively (P < 0.00001). The door to needle time in patients given thrombolysis remained virtually unchanged during the study period at around 54 minutes. In contrast, the door to balloon time progressively and substantially decreased, from 175 +/- 164 minutes in 1997 to 96 +/- 52 minutes in 2002. CONCLUSIONS: There is a steady increase in the proportion of patients referred for primary PCI than for thrombolysis. The door to needle delay in patients given thrombolysis substantially exceeds the recommended time. The door to balloon time has declined considerably but still slightly exceeds the recommended time. Given the inherent delay between initiation of lysis and arterial recanalization, it appears from our experience that PCI does not substantially delay arterial reperfusion as compared to thrombolysis. Efforts should continue to minimize delays to reperfusion therapy.

Analysis of Variance↗