A lot of questions about use of temporary transvenous pacing still remain obscure and there is no effective comparison between use of fluoroscopy versus electrocardiogram/echocardiogram in patients with bradicardias. The aim of the study is to evaluate how long does it take to start the correct cardiac stimulation with transvenous pacing in patients with bradicardias comparing use of fluoroscopy versus electrocardiogram/echocardiogram and compare rates of complications between two methods.

Approximately 150 subjects will be recruited over a planned recruitment period of 18 months. Patients will be submitted to ecchocardiogram using Philips Envisor, and electrocardiogram with Philips Healthcare PageWriter TC30.

Inclusion Criteria:

• adult males and females aged > 18 years
• symptomatic bradicardia
• informed consent signed.

Exclusion Criteria:

• pregnancy
• hemodynamic instability (pulmonary congestion / systolic arterial pressure lower than 90 mmHg)
• body mass index greater than 40 kg/ m2
• use of oral anticoagulation
• acute coronary syndromes
• left ventricle ejection fraction < 45%
• presence of any kind of cardiac stimulation device