Clinical Research Directory

Inclusion Criteria: 1. English speaking (\>18 years old). Daily messages will be sent in English. 2. Acute PE with at least one of the following: 1. any right ventricular enlargement or dysfunction on echocardiogram; 2. CT Angiogram reporting any right ventricular enlargement; or 3. elevated cardiac biomarker (NT-pro BNP or troponin above baseline). Criteria for enrollment will be included on source document. 3. Rate controlled atrial arrythmias (resting heart rate \<110 beats/m) are eligible for enrollment. This includes atrial fibrillations. This is standard of care management for atrial fibrillation. 4. Subjects do need to take prescribed anticoagulation. Exclusion Criteria: 1. Pregnancy. 2. Cardiac Effort \>3.5 beats/m during 6MWT. 3. Resting tachycardia \>110 beats/m at hospital discharge. 4. Chronic Thromboembolic Pulmonary Hypertension 5. Systolic blood pressure \>180 mmHg at hospital discharge. 6. Inability to walk. 7. Estimated prognosis \<12 months at the time of discharge due to underlying co-morbidities (e.g., cancer). 8. Advanced neurologic disease and would not be able to comply with the messages. 9. Lack of access to email or text messaging 10. Inability or unwillingness to follow daily instructions.