Clinical Scorecard: An Uncommon Source of Acute Chest and Back Pain Accompanied by Hypoxemia

At a Glance

Key Highlights

• PA-IMH is associated with severe pulmonary hypertension and congenital heart disease.
• Hypoxemia in PA-IMH results from right-to-left shunting due to elevated mPAP.
• Differential diagnosis includes PE, ACS, AAS, and AP, distinguishable by transthoracic echocardiography.
• Management typically involves conservative, physiology-directed strategies and close imaging surveillance.
• Surgery is reserved for cases of overt pulmonary artery dissection due to high mortality risk.

Guideline-Based Recommendations

Diagnosis

• Use transthoracic echocardiography to differentiate PA-IMH from other causes of acute chest/back pain and hypoxemia.

Management

• Adopt a conservative, physiology-directed strategy for PA-IMH.
• Consider PH-targeted pharmacotherapy to attenuate IMH progression.

Monitoring & Follow-up

• Implement close imaging surveillance for patients with PA-IMH.

Risks

• High mortality associated with overt pulmonary artery dissection.

Patient & Prescribing Data

Patients with severe pulmonary hypertension and potential PA-IMH.

Prostacyclin analogs may be used to manage progression of PA-IMH.

Clinical Best Practices

• Recognize acute chest/back pain as a potential indicator of PA-IMH in patients with severe PH.
• Utilize echocardiography for timely diagnosis and management decisions.

Related Resources & Content

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