If you are experiencing shortness of breath and palpitations when lying down post-COVID, with normal X-ray and ECG results, the next steps could include:
1. Pulmonary Evaluation: Consider a pulmonary function test (PFT) to assess for any lingering lung issues that might not show up on an X-ray, such as reactive airway disease or long COVID-related lung changes.
2. Cardiac Evaluation: Despite a normal ECG, further cardiac evaluation might be warranted. This could include an echocardiogram to look for any structural heart issues or a Holter monitor to detect any intermittent arrhythmias.
3. Blood Tests: Checking blood tests such as
complete blood count (CBC), D-dimer (to rule out pulmonary embolism),
thyroid function tests, and cardiac biomarkers (like troponin) could be informative.
4. Sleep Study: If symptoms worsen when lying down, a sleep study to evaluate for sleep apnea or other sleep-related breathing disorders might be helpful.