[Cardiac arrest due to torsades de pointes ventricular tachycardia in a patient with Lyme carditis].

A 45-year-old female presented with third degree atrioventricular block and was diagnosed with Lyme carditis. Despite appropriate antibiotic treatment and continuous ventricular pacing, she suffered sudden cardiac arrest due to torsades de pointes ventricular tachycardia. Although rare, severe and potentially fatal ventricular tachyarrhythmias can occur in patients with Lyme borreliosis.

Primary percutaneous coronary intervention delay for patients living in a peripheral area in Denmark.

Introduction: In patients with ST-elevation myocardial infarction (STEMI), timely primary percutaneous coronary intervention (PPCI) is superior to thrombolysis and it is the preferred treatment in Denmark. The prognosis depends on the time delay until coronary blood flow is re-established. The purpose of this registry study was to evaluate the PPCI treatment delay of the triage algorithm in a peripheral area in the Region of Central Jutland in the context of European guidelines.

Implantable loop recorder is an effective diagnostic tool for unexplained syncope.

Introduction: Patients with cardiac syncope have a significantly higher mortality than patients with syncope of non-cardiac causes, while patients with syncope of unknown aetiology constitute an intermediate risk group, presumably because this group is mixed, which suggests that further diagnostic testing is warranted.

Material And Methods: This was a retrospective single-centre study evaluating the diagnostic yield of an implantable loop recorder (ILR) in establishing the cause of recurrent, unexplained syncope.

Results: A total of 44 patients received ILR between 2007 and 2011.

Heart failure in patients with sick sinus syndrome treated with single lead atrial or dual-chamber pacing: no association with pacing mode or right ventricular pacing site.

Aims: Previous studies indicate that ventricular pacing may precipitate heart failure (HF). We investigated occurrence of HF during long-term follow-up among patients with sick sinus syndrome (SSS) randomized to AAIR or DDDR pacing. Furthermore, we investigated effects of percentage of ventricular pacing (%VP) and pacing site in the ventricle.

Atrial fibrillation in patients with sick sinus syndrome: the association with PQ-interval and percentage of ventricular pacing.

Aims: In the recently published DANPACE trial, incidence of atrial fibrillation (AF) was significantly higher with single-lead atrial (AAIR) pacing than with dual-chamber (DDDR) pacing. The present analysis aimed to evaluate the importance of baseline PQ-interval and percentage of ventricular pacing (VP) on AF.

Methods And Results: We analysed data on AF during follow-up in 1415 patients included in the DANPACE trial.

A comparison of single-lead atrial pacing with dual-chamber pacing in sick sinus syndrome.

Aims: In patients with sick sinus syndrome, bradycardia can be treated with a single-lead pacemaker or a dual-chamber pacemaker. Previous trials have revealed that pacing modes preserving atrio-ventricular synchrony are superior to single-lead ventricular pacing, but it remains unclear if there is any difference between single-lead atrial pacing (AAIR) and dual-chamber pacing (DDDR).

Methods And Results: We randomly assigned 1415 patients referred for first pacemaker implantation to AAIR (n = 707) or DDDR (n = 708) pacing and followed them for a mean of 5.

Long genuine coronary artery lesions treated with stiff tubular or flexible coiled stents. A randomized angiographic follow-up study.

Objective: To investigate effects of stent flexibility on 6 months' clinical and angiographic outcome in long stented lesions.

Design: A total of 44 genuine coronary artery lesions (lesion length >20 mm and < or =30 mm) were randomized to implantation with a 30 mm long flexible coiled stainless steel stent (Freedom Force, Global Therapeutics) (n = 23) or a 30 mm long stiff tubular stainless steel stent (Crown, Johnson & Johnson) (n = 21).

Results: Target vessel revascularization was performed in 10 patients (45%) in the Freedom Force stent group, and in 7 patients (33%) in the Crown stent group (ns).