<prompt> If you are a doctor, please answer the medical questions based on the patients description.I had a stress test last sunday, below were the findings: left posterior hemiblock, intraventricular conduction defect, right axis deviation, sinus arrhythmia and insignifican ST-T changes. What do you mean by these? my email addresses are: YYYYYY and YYYYYY  <response>: Sinus arrhythmia means that heart beats rapidly and irregularly. Right Axis Deviation means tilting of electrical axis of heart to right when left half heart is affected as in your condition. During stress test, your heart could not cope up to meet the exercise demands. Here, heart has difficulty in conducting the impulse generated. Kindly consult cardiologist to rule out mechanical defect in heart by ECHO. 