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Background The evidence for benefits of bivalirudin over heparin has recently been challenged. We aimed to analyse the safety and cost-effectiveness following reintroduction of heparin instead of bivalirudin as the standard anticoagulation for primary percutaneous coronary intervention (PPCI) in a high-volume centre. Methods and results This analysis was an open-label, prospective registry including all patients admitted to our centre for PPCI from April 2014 to April 2016. Heparin was reintroduced as standard anticoagulant in April 2015. During the 2 years, 1291 patients underwent a PPCI, 662 in the Bivalirudin protocol period (Cohort B) and 629 in the Heparin protocol period (Cohort H). Baseline and procedural characteristics were not significantly different, except for a higher use of thromboaspiration and femoral access in the earlier Cohort B. Glycoprotein 2b3a (Gp2b3a) antagonists were used in 24% of the patients in Cohort B versus 28% in Cohort H (P

Introduction Mortality following ST-elevation myocardial infarction has declined significantly with the advent of primary PCI (PPCI). Concurrent use of antiplatelet agents has further decreased complication rates and mortality; however, these agents confer an increased bleeding risk, an independent risk factor for mortality. This retrospective study assesses the effect of blood loss on short- and long-term mortality and its association with clinical characteristics in a real world population of patients undergoing PPCI at a tertiary referral centre in the UK. Methods All patients accepted for PPCI within the period of September 2009 to November 2011 were eligible for inclusion in the study. Patient data were obtained from our Cardiac Services Database System (Phillips CVIS) and mortality data were gathered from the Summary Care Record (SCR) database. Statistical comparisons of continuous variables were made by one-way ANOVA. Categorical variables were compared using the chi-squared test. A P value of Results 1403 patients with recorded admission and discharge haemoglobin levels were included in this analysis. Characteristics and clinical outcomes were compared in three groups according to the degree of haemoglobin reduction (Table 1). Patients with a reduction in haemoglobin were more likely to be female, slightly older and have prior history of MI. Patients with a significant reduction in haemoglobin were more likely to have received abciximab. Thirty-day mortality was significantly higher in the group with a haemoglobin drop (Table 1) as was overall mortality (hazard ratio 1.8, 95% CI 1.2–2.5) during a mean follow-up period of 2.1 years (Figure 1). Conclusions Our retrospective analysis in a large cohort of patients confirms recent data suggesting an adverse association between a reduction in haemoglobin following PPCI and long-term mortality. Further work is required on strategies to reduce bleeding risk and hence improve clinical outcome following PPCI.

Aims Current national and international guidelines continue to recommend activation of the primary percutaneous coronary intervention (PPCI) pathway in patients presenting with chest pain and presumed new-onset left bundle branch block (LBBB). Previous research has suggested that a lower proportion of patients presenting with LBBB require emergency intervention. In this study we have compared baseline clinical characteristics, angiographic findings and subsequent outcome in patients with LBBB versus ST-elevation myocardial infarction (STEMI) referred to our tertiary centre for PPCI. Methods All patients accepted for PPCI within the period of September 2009 to November 2011 were included in the study. Patient data obtained from our Cardiac Services Database System (Phillips CVIS) were analysed and angiographic images reviewed on our Cardiac Image Database (McKesson Horizon). Mortality data were gathered from the Summary Care Record (SCR) database. Statistical comparisons of continuous variables were made by an unpaired t test. Categorical variables were compared using the χ 2 test. A p value of Results During the study period, 1875 patients were referred for PPCI of whom 155 (8.3%) had LBBB. Compared with STEMI, patients with LBBB were significantly older, more likely to be female and have prior history of MI and CABG (table 1). Patients with LBBB had similar door-to-balloon (DTB) and call-to-balloon (CTB) times. PCI was performed in 40 (26%) patients with LBBB although an acutely occluded culprit vessel was found in only 19 (12.2%) patients (table 2). Furthermore, 85 (54.8%) patients had non-flow limiting coronary artery disease and of those with significant disease 12 (7.7%) patients required CABG (figure 1). Overall, an acute coronary syndrome (defined as ischaemic chest pain with positive troponin) was confirmed in only 67 (43.2%) of patients presenting with LBBB. 30-day mortality was similar between LBBB and STEMI patients (table 2). However, during a mean follow-up period of 2.1 years, overall mortality was significantly higher in the LBBB group compared to STEMI (HR 2.01, 95% CI 1.26 to 3.20) (figure 2). Conclusions Our study shows that, in contrast to STEMI, only a small proportion of patients presenting with chest pain and LBBB had an acutely occluded coronary artery. Although short-term mortality was similar between the two groups, long-term outcome was significantly worse in patients with LBBB. Further work is needed to identify those patients presenting with LBBB who are most likely to have an acute coronary occlusion, in order to facilitate the appropriate use of emergency coronary angiography and PPCI.

Introduction Tako-tsubo cardiomyopathy (TCM) is increasingly being recognised in patients admitted with suspected acute coronary syndrome, as access to angiography and echocardiography are much quicker than before. Typically, patients with TCM present to the primary PCI service (PPCI) with chest pain and ST elevation on their electrocardiogram mimicking ST elevation myocardial infarction (STEMI). However, there is no ‘real-world’ data about the prevalence of this condition in PPCI admissions for suspected STEMI. Therefore we aimed to analyse the prevalence of TCM in a high volume regional PPCI service in UK. Methods All patients admitted with suspected STEMI between Sept 2009 and Nov 2011 to our centre were included. After excluding those who underwent PPCI, We analysed the echocardiogram and/or left ventriculogram of those patients who did not undergo PPCI to identify patients with typical TCM features of apical akinesia with basal hyperkinesia. Their coronary angiograms were reviewed and the inclusion criteria to identify TCM was the absence of significant coronary disease with no artery having >50% stenosis. Results Of the 1875 patients admitted, 17 (0.9%) patients (0 m, 17 f) with the mean age of 70±10.7 years (range 56–94 years) were identified to have typical TCM features. The prevalence of TCM in female PPCI admission was 3.1% (17/560) (figure 1). The admission ECG showed ST elevation in 14 patients (82%) and three had LBBB (18%). In those who had positive hsTroponin (n=16, 94.1%), the mean level was 921±668 (median 778, range 110–2550). Two patients had cardiac arrest prior to hospital admission with successful resuscitation. Left ventricular function was severely impaired (EF≤30%) in 2 patients whilst all others had moderately impaired LV function (EF 31–50%) (table 1). Aspirin, β-blocker, Angiotensin converter enzyme inhibitor (ACE-I) or angiotensin receptor blocker (ARB) was given to 13 (76.5%), 13 (76.5%) and 15 (88.2%) patients respectively on their discharge. All the 15 patients who had repeat echocardiogram within 3 months of their index admission showed complete recovery of their LV function. During a mean follow up period of 22±7 months (median 21, range 8–36 months), there was no mortality. Conclusions This first ‘real-world’ observational study of TCM in STEMI patients admitted for PPCI to a single centre showed an overall prevalence of 0.9% with 3% prevalence in female population. Although TCM is not benign during the acute episode, there is an excellent survival outcome if managed appropriately during the acute phase.

Acute total occlusion of the left main stem (LMS) is a rare cause of myocardial infarction but carries a high risk of morbidity and mortality including presentation as sudden death. We describe the case of a 68-year-old woman who presented acutely with chest pain and ST segment elevation in lead aVR on her ECG suggestive of possible LMS occlusion. Emergency coronary angiography confirmed acute total LMS occlusion as well as an anomalous dominant right coronary artery. The patient underwent emergency percutaneous coronary intervention of the LMS with a good angiographic result and resolution of her symptoms. The patient was treated for acute left ventricular failure but made a gradual recovery and was discharged home 7 days after admission.

A 59-year-old man was seen in the Cardiology Clinic with a long history of recurrent syncope. These episodes would occur predictably during sexual intercourse at the point of ejaculation. He experienced prodromal symptoms including lightheadedness followed by syncope for approximately 10 s, with gradual recovery. To prevent injury the couple would place mattresses around the bed to …