This case involves a 62-year-old female patient who was admitted to the hospital and diagnosed with Guillan-Barre Syndrome. Because the patient was assessed at a high risk of developing deep vein thrombosis (DVT) and pulmonary embolus (PE), the patient was given heparin to prevent blood clots while she was inpatient. However, the patient was not prescribed any anticoagulation or blood thinners upon discharge. The patient complained of discomfort in her legs and made slow gains with physical therapy. Several weeks after her discharge, the patient returned to the emergency room with dropping oxygen saturation, labored breathing, and abnormal clinical signs. She was diagnosed with a massive saddle embolus via MRI and was transferred to a university hospital facility. Upon arrival, the patient became hypotensive and developed oxygen deficiency in her blood. She eventually went into cardiac arrest. Despite the emergency department’s resuscitative efforts (including CPR and intubation) the patient unfortunately died. An expert in hematology was sought to comment on the standard of care in regards to the anticoagulation protocol for patients at risk of developing DVT.