Coronary Microvascular Dysfunction Restored After Surgery in Inflammatory Bowel Disease: A Prospective Observational...

Area of Science:

• Cardiology
• Gastroenterology
• Vascular Biology

Background:

• Inflammatory bowel disease (IBD), encompassing Crohn disease and ulcerative colitis, is associated with systemic complications.
• Coronary microvascular dysfunction (CMD) is an emerging concern in chronic inflammatory conditions.

Purpose of the Study:

• To investigate the prevalence and severity of CMD in IBD patients.
• To assess the impact of intestinal resection surgery on CMD in IBD.

Main Methods:

• Transthoracic Doppler echocardiography was used to measure coronary flow velocity reserve (CFVR).
• CFVR was assessed at rest and during hyperemia induced by adenosine diphosphate (ADP) infusion.
• CMD was defined as CFVR < 2.5; measurements were taken pre- and post-surgery.

Main Results:

• IBD patients (Crohn's and ulcerative colitis) exhibited significantly lower CFVR compared to controls.
• IBD presence and elevated high-sensitivity C-reactive protein (hs-CRP) independently predicted lower CFVR.
• Post-surgery, hyperemic coronary flow velocity and CFVR improved in IBD patients, particularly those with pre-existing CMD.

Conclusions:

• IBD is independently associated with coronary microvascular dysfunction.
• Surgical resection of diseased bowel in IBD patients leads to improvement in CMD.
• Reduction in hs-CRP levels correlates with improved coronary blood flow and CFVR after surgery.