Transient Symptoms in Pulmonary Embolism

Clinical Presentation

Dyspnea, the most frequent symptom, can be acute and severe in central PE or mild and transient in small peripheral PE, present in approximately 80% of PE cases, according to the European Heart Journal 2, 1
Pleuritic chest pain can occur intermittently and is typically associated with peripheral emboli causing pleural irritation, present in about 52% of PE cases, as noted by the European Heart Journal 2, 3
Syncope can occur transiently even in patients without persistent hemodynamic instability, though less common, occurring in 19% of cases, as reported by the European Heart Journal 2, 1
In patients with pre-existing heart failure or pulmonary disease, worsening dyspnea may be the only symptom indicative of PE, and this symptom may fluctuate, according to the European Heart Journal 3

Small peripheral emboli may cause temporary symptoms that resolve as the body's natural thrombolytic system begins to work on the clot, as explained by the European Heart Journal 4
Transient symptoms may occur when emboli partially obstruct pulmonary vessels temporarily before moving or dissolving, as noted by the European Heart Journal 5
The patency of the pulmonary arterial bed is restored in the majority of PE survivors within the first few months following the acute episode, which explains why symptoms may be temporary, according to the European Heart Journal 4

Transient symptoms can lead to delayed diagnosis or misdiagnosis, as patients may not seek medical attention if symptoms resolve quickly, as warned by the European Heart Journal 5, 2
Even with transient symptoms, untreated PE carries a high risk of recurrence, which can be fatal, as reported by the European Heart Journal 3
The European Society of Cardiology guidelines note that PE can present with a wide range of clinical presentations, from hemodynamic instability to silent or transient symptoms, as stated by the European Heart Journal 6

A high clinical suspicion for PE should be maintained even when symptoms are transient or have resolved at the time of evaluation, as recommended by the European Heart Journal 5
Clinical decision rules to determine pre-test probability of PE should be applied regardless of whether symptoms are persistent or transient, according to the European Heart Journal 6
D-dimer testing and appropriate imaging should be considered even in patients with resolved symptoms if PE is clinically suspected, as suggested by the European Heart Journal 6

Anticoagulation remains the mainstay of treatment for objectively confirmed PE, regardless of whether symptoms were transient or persistent, as stated by the European Heart Journal 6
Duration of anticoagulation (minimum 3 months) should not be shortened based on resolution of symptoms, as recommended by the European Heart Journal 6
Follow-up is recommended 3-6 months after acute PE, even if symptoms have resolved, to assess for chronic complications, according to the European Heart Journal 4

Even after transient symptoms, patients may develop post-PE syndrome with decreased quality of life and/or chronic functional limitations, as reported by the European Heart Journal 4
Up to 47% of patients may have reduced maximal aerobic capacity at one year follow-up, regardless of whether initial symptoms were transient or persistent, according to the European Heart Journal 4
Persistent dyspnea or poor physical performance over several months after acute PE can occur even if the initial presentation included only transient symptoms, as noted by the European Heart Journal 4