Paroxysmal AV block Laboratory Findings and Stimulation tests
Laboratory Investigations and stimulation tests
- Adenosine plasma levels (APL) and Adneosine Triphosphate (ATP)stimulation tests are tests of value in extrinsic idiopathic AV Block.
- As previously discussed, APL levels are innately low in patients with EI AVB and therefore, on injection of ATP, AV blocks maybe reproduced.
- Other lab investigations such as arterial blood gas analysis, hemoglobin, troponin or D- dimer may help with the diagnoses in appropriate clinical situations. "ESC Guidelines on Syncope (Diagnosis and Management of)".