Let's say moderate probability for PE morbidly obese patient who presents for shortness of breath, chest tightness, left sided chest pain radiating to back. You get the CT scan and it's inconclusive (no major lobar PE, but can't say **** about segmental or subsegmenfal due to respiratory motion artifact and body habits). Doppler of legs inconclusive as well do to body habitus with even the femorals not fully visualized. Do you send home with a "good luck", obs with maybe echo +\- VQ? I ultimately obs admitted the patient but kind of feel stupidly conservative by the hospitalist's response?