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Dive into the research topics where Avital Porter is active.

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Featured researches published by Avital Porter.


American Journal of Cardiology | 2003

Effect of gender on outcomes of acute coronary syndromes.

David Hasdai; Avital Porter; Annika Rosengren; Solomon Behar; Valentina Boyko; Alexander Battler

can be a valuable tool for the management of patients who undergo diagnostic and interventional angiographic procedures. The effectiveness of the QuickSeal was demonstrated by a significant decrease in TTH and TTA in diagnostic and interventional patients. This led to a significant decrease in time to eligibility for hospital discharge and time to discharge. Importantly, this benefit was not accompanied by any increase in major complications in the QuickSeal group. There were no reported incidents of infection or adverse tissue reactions in any of the QuickSealtreated patients. The extravascular delivery of Gelfoam makes the device safe for use in patients with common femoral artery disease and in patients where the puncture site may involve the common femoral artery bifurcation. The extravascular nature of the device eliminates the need for a femoral angiogram at the end of the procedure. The device received Food and Drug Administration approval in March 2002.


American Journal of Cardiology | 1998

Mitral annular calcium detected by transthoracic echocardiography is a marker for high prevalence and severity of coronary artery disease in patients undergoing coronary angiography

Yehuda Adler; Itzhak Herz; Mordehay Vaturi; Renato Fusman; Ronit Shohat-Zabarski; Noam Fink; Avital Porter; Yaron Shapira; Abid Assali; Alex Sagie

This study tests the hypothesis that mitral annular calcium (MAC) detected by transthoracic echocardiography (TTE) is a marker for high prevalence and severity of coronary artery disease (CAD) in patients undergoing coronary angiography. Pathological studies have suggested that there is an association between MAC and calcific deposits in coronary arteries; however, there are no clinical data to support this association. One hundred sixty-five patients with MAC (101 women and 64 men; mean age 71 +/- 8 years) who underwent cardiac catheterization with coronary angiography for various reasons were compared with 147 age-matched controls without MAC who underwent coronary angiography for the same indications during the same period. MAC was defined as a dense, localized, highly reflective area at the base of the posterior mitral leaflet detected by TTE. Obstructive CAD was defined as either > or = 50% reduction of the internal diameter of the left main coronary artery or > or = 70% reduction of the internal diameter of the left anterior descending, right coronary, or left circumflex artery distribution. Compared with controls, the MAC group had a significantly higher prevalence of CAD (89% vs 75%, p = 0.001) and higher rates of 3-vessel disease (45% vs 24%, p = 0.001) and left main CAD (13% vs 5%, p = 0.009). Nonsignificant CAD was more common in the control group (25% vs 11%, p = 0.001). Multivariate analysis identified MAC (p = 0.0002), indications for cardiac angiography (p = 0.02), sex (p = 0.03), and diabetes mellitus (p = 0.03) as independent predictors for the presence and severity of obstructive CAD. MAC detected by TTE may be a marker for high prevalence and severity of CAD in patients undergoing coronary angiography.


Catheterization and Cardiovascular Interventions | 2006

Short-term triple therapy with aspirin, warfarin, and a thienopyridine among patients undergoing percutaneous coronary intervention

Avital Porter; Yuval Konstantino; Zaza Iakobishvili; Leeor Shachar; Alexander Battler; David Hasdai

To assess bleeding complications among patients undergoing percutaneous coronary intervention (PCI) and receiving triple therapy of warfarin, aspirin, and a thienopyridine.


International Journal of Cardiology | 1997

Maximal precordial ST-segment depression in leads V4–V6 in patients with inferior wall acute myocardial infarction indicates coronary artery disease involving the left anterior descending coronary artery system

David Hasdai; Yochai Birnbaum; Avital Porter; Samuel Sclarovsky

BACKGROUNDnIn inferior wall acute myocardial infarction, maximal ST-segment depression in left precordial leads (V4-V6) has been shown to be associated with increased in-hospital mortality, presumably due to coronary artery disease involving the left anterior descending coronary artery system.nnnMETHODSnWe measured ST-segment deviation from baseline in the initial electrocardiogram of patients with inferior wall acute myocardial infarction, who subsequently underwent coronary angiography during their in-hospital stay. Patients were divided into three groups: (I) No precordial ST-segment depression (n = 34). (II) Maximal precordial ST-segment depression in leads V1-V3 (n = 44). (III) Maximal precordial ST-segment depression in leads V4-V6 (n = 14).nnnRESULTSnThe left anterior descending coronary artery or its diagonal branch were stenosed (> 50%) in 32%, 41%, and 71% of patients in groups I, II, and III, respectively (p = 0.04), and severely stenosed (> 70%) in 18%, 18% and 57% of patients in the respective groups (p = 0.007).nnnCONCLUSIONnIn patients with inferior wall acute myocardial infarction, maximal precordial ST-segment depression in leads V4-V6 is suggestive of severe coronary artery disease involving the left anterior descending coronary artery or its diagonal branch.


The Cardiology | 1996

Predicting postinfarction left ventricular dysfunction based on the configuration of the QRS complex and ST segment in the initial ECG of patients with a first anterior wall myocardial infarction.

David Hasdai; Avital Porter; Yochai Birnbaum; Jacob Strahilevitz; Samuel Sclarovsky

The objective of the study was to identify patients with anterior wall acute myocardial infarction (AMI) at high risk of postinfarction left ventricular dysfunction (LVD). This study population included all patients admitted with a diagnosis of anterior wall AMI (ST segment elevation of > 1 mm in 2 or more precordial leads) without history or ECG evidence of antecedent AMI,who underwent assessment of left ventricular ejection fraction (LVEF) during emergency hospitalization. ST segment deviation from baseline was measured manually 0.08 s after the J point in all leads. Patients (n = 81) were classified into two groups based on the configuration of the QRS complex and ST segment: ST > 1 mm with preserved (pattern A; n = 60) or distorted terminal QRS (emergence of the J point at a level above the lower half of the R wave or disappearance of the S wave in leads with an Rs configuration; pattern B; n = 21). LVD (LVEF < 40%) was significantly more prevalent in patients with pattern B than pattern A (48 vs. 12%; p = 0.002). There was no correlation between the number of leads with ST segment elevation and LVD (p = 0.47). The sum of ST segment elevation in involved leads correlated weakly, yet significantly with LVEF (R = -0.22; p < 0.05). In conclusion, patients with anterior wall AMI and pattern B in the initial ECG are at high risk of post-AMILVD.


American Journal of Cardiology | 1998

Long-Term Prognosis of 210 Patients Who Underwent Coronary Angiography Before 40 Years of Age

Avital Porter; Mordechai Wurzel; Tuvia Ben-Gal; Jaqueline Sulkes; Alex Sagie

We report on a follow-up of 210 patients who underwent coronary angiography before age 40. We found that young patients with normal coronary arteries have an excellent prognosis, whereas those with single-vessel disease have an unfavorable outcome resembling that of patients with multivessel disease.


Journal of Cardiology | 2017

Does colchicine decrease the rate of recurrence of acute idiopathic pericarditis treated with glucocorticoids

Aviv Mager; Yeela Talmor; Chava Chezar Azzerad; Zaza Iakobishvili; Avital Porter; Ran Kornowski; David Hasdai

BACKGROUNDnThe traditional treatment of acute pericarditis includes non-steroidal anti-inflammatory agents (NSAIDs) or glucocorticoids. The addition of colchicine has been found to reduce the rate of recurrences. Glucocorticoids, however, may attenuate this effect, although the available data are limited. We examined the impact of colchicine on the rate of recurrence of acute idiopathic pericarditis pretreated with prednisone.nnnMETHODSnThe frequency of recurrence in patients hospitalized for acute idiopathic pericarditis in a tertiary medical center in 2004-2014 who were treated with glucocorticoids or with non-steroidal therapy was assessed from the computerized hospital database. A retrospective design was used.nnnRESULTSnThe cohort included 199 patients aged 18-86 years. Sixty-two (31%) were treated with prednisone, 42 with colchicine and 20 without, and 133 with non-steroidal therapy; in 4 patients, therapy was not detailed. Follow-up ranged from 13 to 147 months (median, 48 months). Fifty-three patients (26.6%) experienced at least one recurrence of pericarditis. The recurrence rate was significantly higher in patients who received prednisone and colchicine (17/42, 40.5%) than in patients who received NSAIDs or aspirin and colchicine (8/44, 18.2%, p=0.03) or any non-steroidal therapy (30/133, 22.6%, p=0.03). There was no difference between the rate of recurrence in patients who were treated with prednisone alone (5/20, 25%) and those treated with NSAIDs or aspirin and colchicine or with any non-steroidal therapy (p=NS). Baseline characteristics and duration of follow-up were similar in patients with and without recurrence. Hospital stay was longer in patients treated with prednisone alone as compared to patients treated with prednisone and colchicine. There were no other differences in baseline characteristics between these groups.nnnCONCLUSIONSnThe addition of colchicine to prednisone in patients admitted for acute idiopathic pericarditis does not reduce the risk of recurrence. This finding suggests that prednisone blunts the salutary effects of colchicine.


American Journal of Cardiology | 2017

Incidence and Prognosis of Pericarditis After ST-Elevation Myocardial Infarction (from the Acute Coronary Syndrome Israeli Survey 2000 to 2013 Registry Database)

Adi Lador; David Hasdai; Aviv Mager; Avital Porter; Ilan Goldenberg; Nir Shlomo; Dina Vorobeichik; Roy Beigel; Ran Kornowski; Zaza Iakobishvili

There are scarce contemporary data regarding the incidence and prognosis of early postmyocardial infarction pericarditis (PMIP). Thus, we retrospectively analyzed 6,282 patients with ST-segment elevation myocardial infarction (STEMI) enrolled with known PMIP status in the Acute Coronary Syndrome Israeli Survey 2000 to 2013 registry. The primary outcome was the composite of all-cause mortality, nonfatal myocardial infarction, cerebrovascular event, stent thrombosis, or revascularization. The secondary outcomes were mortality and length of stay during the acute hospitalization. Overall, 76 patients with STEMI had PMIP (1.2%). PMIP incidence gradually decreased from 170 per 10,000 in 2000 to 110 per 10,000 in 2013, respectively (35% reduction, p for trendu2009=u20090.035). Patients with PMIP were younger (median 58.0 vs 61.0; pu2009=u20090.045), had less hypertension, higher cardiac biomarkers, and more frequently reduced left ventricular ejection fraction (87.0% vs 67.0%; pu2009=u20090.001). Patients with PMIP had longer time to reperfusion (225 minutes vs 183 minutes; pu2009=u20090.016) and length of stay (7.0 vs 5.0 days; pu2009<u20090.001). The composite end point occurred similarly in patients with and without PMIP (10.5% vs 13.2%, respectively). There was no significant difference in 30-day, 1-year, and 5-year survival. In conclusion, PMIP is a relatively rare complication of STEMI in the coronary reperfusion era, portends worse short-term but not long-term outcomes, and is associated with bigger infarct size.


International Journal of Cardiology | 2007

Unusual presentation of takayasu arteritis

Ashraf Hamdan; Avital Porter; Georgios P. Georghiou; Yair Mulad; Ehud Raanani; David Hasdai; Alexander Battler; Abid Assali


American Heart Journal | 2006

Antecedent left ventricular mass and infarct size in ST-elevation myocardial infarction

Zaza Iakobishvili; Vladimir Danicek; Avital Porter; Shula Imbar; David Brosh; Alexander Battler; David Hasdai

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