Conduction latency in left bundle branch pacing in heart failure patient.

Since the introduction of left bundle branch pacing (LBBP), a search for precise parameters confirming successful capture of conduction system was conducted. Most of the proposed electrocardiographic criteria refer to patients with narrow QRS complexes. We present a patient with heart failure in whom cardiac resynchronization was achieved using conduction system pacing.

Antibodies specific to SARS-CoV-2 proteins N, S and E in COVID-19 patients in the normal population and in historical samples.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread globally; recognition of immune responses to this virus will be crucial for coronavirus disease 2019 (COVID-19) control, prevention and treatment. We comprehensively analysed IgG and IgA antibody responses to the SARS-CoV-2 nucleocapsid protein (N), spike protein domain 1 (S1) and envelope protein (E) in: SARS-CoV-2-infected patient, healthy, historical and pre-epidemic samples, including patients' medical, epidemiological and diagnostic data, virus-neutralizing capability and kinetics. N-specific IgG and IgA are the most reliable diagnostic targets for infection.

[The role of spiral computer tomography in diagnostic algorithms in patients with suspected pulmonary embolism].

The recognizing of the EP is still not satisfied because specifity and sensitivity of clinical symptoms is relatively low. SCT is an important examination in the diagnostic of pulmonary embolism and is the alternative to often nonconclusive scintigraphy and conclusive but invasive pulmonary angiography. The authors describe the role of SCT in the diagnostic algorithm of the suspected pulmonary embolism of the high and not high risk, discuss the interpretation of result of SCT due to the sort of SCT (SDCT or MDCT) and to clinical probability of PE and they discuss the problem of subsegmental PE.

[Dysfunction of coagulation processes in patients after acute coronary syndrome--therapeutic implications].

In the guidelines for patients with acute coronary syndrome (ACS), reperfusion, antiplatelet treatment, completed with parenteral anticoagulant are the standard therapy. It is because ACS is the result of occlusion of related artery by thrombus compound mostly of platelets, with processes of aggregation and adhesion in its pathogenesis. However, many patients after ACS experience major adverse cardiovascular events (MACE) despite optimal long term antiplatelet therapy.