Role of Right-Heart Catheterization in Pre-Operative Assessment With Left-Main and Three-Vessel Coronary Artery Disease
Right-heart catheterization (RHC) is not routinely indicated solely to risk-stratify perioperative outcomes in patients with left-main and three-vessel coronary artery disease. [1] RHC is used preoperatively when pulmonary hypertension or right-ventricular (RV) dysfunction is suspected and when precise hemodynamic confirmation and classification are required. [1], [2]
Indications Linked to Suspected Pulmonary Hypertension or RV Dysfunction
RHC is recommended preoperatively to confirm severity and to distinguish primary (precapillary) pulmonary hypertension from secondary (postcapillary) pulmonary hypertension causes such as left-sided heart failure. [1] RHC supports perioperative risk assessment in pulmonary hypertension when hemodynamics cannot be reliably determined by noninvasive testing. [1], [2]
Hemodynamic Information Provided by RHC
RHC provides direct measurements of pulmonary arterial pressure and left-sided filling pressure that guide classification and perioperative management planning. [1] RHC-derived classification criteria for precapillary pulmonary hypertension include mean pulmonary artery pressure >20 mm Hg, pulmonary arterial wedge pressure <15 mm Hg, and pulmonary vascular resistance >2 Wood units. [3]
Treatment-Planning Utility in the Peri-Operative Setting
When pulmonary hypertension is present, preoperative evaluation should include functional capacity assessment, echocardiography with RV function assessment, and hemodynamic assessment in selected patients. [1] Optimization of pulmonary hypertension and RV status before surgery is recommended when pulmonary hypertension is identified. [1]
Relation to Coronary Disease Severity and Pre-Operative Cardiac Work-Up
For patients undergoing noncardiac surgery, evaluation for perioperative risk due to coronary artery disease follows a stepwise approach driven by surgical urgency, clinical risk factors, and functional capacity, with additional testing targeted to ischemia/RV-pulmonary risk signals rather than routine invasive hemodynamic testing. [1] RHC is not recommended as part of routine perioperative pulmonary artery catheterization practice because routine pulmonary artery catheterization has not been shown to improve outcomes in elevated-surgical-risk populations. [1]
Practical Clinical Decision Framework
RHC preoperatively should be considered when the clinical picture suggests pulmonary hypertension and RV dysfunction in which noninvasive testing is insufficient for hemodynamic confirmation and classification. [1], [2] RHC is not indicated as a default preoperative assessment test for left-main and three-vessel coronary artery disease without suspected pulmonary hypertension or RV-pulmonary hemodynamic uncertainty. [1]
Common Pitfalls to Avoid
Avoid routine RHC solely for coronary anatomic complexity in the absence of suspected pulmonary hypertension or RV failure physiology. [1] Avoid relying on noninvasive pulmonary pressure estimates alone when definitive hemodynamic classification is needed for perioperative management planning in pulmonary hypertension. [1], [2]
Target Clinical Goal of RHC-Guided Assessment
The target of RHC in this perioperative context is accurate pulmonary hypertension severity assessment and correct classification to inform preoperative optimization and perioperative management strategy. [1], [3]