"Four Vessels. A SYNTAX Score of 33. An Ejection Fraction of 36%. Diabetes, Kidney Disease, and a Heart That Could Not Wait. Every Surgeon He Saw Said the Risk Was Too High. One Said: There Is Another Way."
Mr. Li had spent his working life with his hands.
A 68-year-old retired technical worker, he had built things, fixed things, and kept things running for four decades. He was the kind of man who did not complain — who noticed a problem, found a solution, and moved on. When the breathlessness started, he assumed it was age. When it worsened, he assumed it was his lungs. He had smoked for years; he had been told he had mild COPD. He managed it. He kept moving.
Then the breathlessness stopped being something he could manage.
Over eighteen months, the exertional chest tightness that had begun on stairs had progressed to flat ground, then to the walk from his bedroom to his kitchen, and finally — in the month before he came to Shanghai — to episodes at rest, waking him from sleep, pressing on his chest like a weight that would not lift. His wife watched him stop mid-sentence to catch his breath. She watched him grip the doorframe when he stood up. She made the appointment.
The coronary angiogram told the story with clinical precision: left main coronary artery stenosis of 80% at the ostium — the origin of the vessel that supplies the majority of the left ventricle; diffuse calcification and tandem lesions in the left anterior descending artery (LAD), with stenoses ranging from 70% to 90% across the mid and distal segments; chronic total occlusion (CTO) of the second obtuse marginal branch (OM2) of the circumflex artery; and a 75% focal stenosis in the mid right coronary artery (RCA). His SYNTAX score was 33 — placing him firmly in the high-complexity tier where guidelines recommend surgical revascularization over percutaneous intervention. His echocardiogram showed an LVEF of 36%, with segmental wall motion abnormalities in the anterior and inferior walls — evidence that the ischemia had already begun to impair myocardial function.
His comorbidities compounded the complexity: Type 2 diabetes for 11 years (HbA1c 7.6%), hypertension for 14 years, chronic kidney disease Stage 3a (eGFR 52 mL/min/1.73m²), and mild-to-moderate COPD. The cardiac team — cardiology, cardiac surgery, anesthesia, and imaging — reviewed his case together. Their consensus was unambiguous: PCI carried an unacceptably high long-term failure risk given the anatomy. Conventional on-pump CABG with cardiopulmonary bypass carried a significantly elevated risk of stroke and acute kidney injury given his renal function and aortic calcification. He had a clear indication for off-pump coronary artery bypass grafting (OPCABG) — if a surgeon with the experience and the technique to execute it safely could be found.
His family brought him to Shanghai and sought care from Dr. Xu Zhiyun, Senior Cardiac Surgeon at Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, through China Medical Concierge – Shanghai (CMCS).
Understanding Complex Coronary Artery Disease and Off-Pump Bypass Surgery: Why Surgical Expertise Is Everything
Coronary artery bypass grafting is one of the most evidence-based procedures in all of medicine — but its outcomes are not uniform. In high-complexity cases, the difference between a good result and a catastrophic one is determined not by the decision to operate, but by the precision of the surgical strategy and the experience of the hands that execute it:
- SYNTAX score stratifies coronary complexity and guides revascularization strategy — the SYNTAX score quantifies the anatomical complexity of coronary artery disease by scoring the number, location, and characteristics of lesions across the coronary tree; scores above 32 define high-complexity disease in which randomized trial data consistently demonstrate superior long-term outcomes with surgical revascularization over PCI, including lower rates of repeat revascularization, myocardial infarction, and mortality; Mr. Li's score of 33 placed him in this category unambiguously
- Left main disease is the highest-stakes coronary anatomy — the left main coronary artery supplies 70–80% of the left ventricular myocardium in most patients; an 80% ostial stenosis represents a critical threat to the entire left heart; revascularization of the left main is not optional — it is urgent — and the quality of the bypass graft to the LAD is the single most important determinant of long-term survival after CABG
- Total arterial revascularization eliminates the 10-year patency problem of saphenous vein grafts — saphenous vein grafts, the most commonly used conduit in CABG, have a 10-year patency rate of approximately 50–60%; arterial grafts — the left internal mammary artery (LIMA), right radial artery, and left radial artery — have 10-year patency rates exceeding 90%; in a 68-year-old patient with diabetes (which accelerates vein graft atherosclerosis), a total arterial strategy is not merely preferable — it is the difference between a durable revascularization and one that will require repeat intervention within a decade
- Off-pump CABG eliminates the systemic inflammatory response of cardiopulmonary bypass — conventional CABG requires the heart to be stopped and blood to be circulated by a heart-lung machine; this cardiopulmonary bypass circuit triggers a systemic inflammatory response that increases the risk of stroke (from aortic manipulation and microemboli), acute kidney injury (from non-pulsatile flow and inflammatory mediators), pulmonary complications, and cognitive dysfunction; in patients with pre-existing renal impairment, aortic calcification, or COPD, these risks are substantially amplified; off-pump CABG — performed on the beating heart without bypass — eliminates this risk entirely
- OPCABG in complex multivessel disease demands a level of technical mastery that is not universally available — performing anastomoses on a beating, moving heart — particularly on the posterior and lateral vessels that require the heart to be displaced from its natural position — demands a combination of mechanical stabilization technology, hemodynamic management expertise, and surgical technique that takes years to develop; the risk of hemodynamic instability during cardiac displacement, and the technical challenge of achieving a precise anastomosis on a moving target, mean that OPCABG in high-complexity cases is only safely executable by surgeons with high-volume, dedicated experience
- Chronic total occlusion revascularization requires precise graft targeting — a CTO represents a vessel that has been completely occluded, often for months or years, with collateral circulation providing residual perfusion to the territory; surgical revascularization of a CTO requires identifying a viable distal target vessel and constructing a graft that will restore antegrade flow to a territory that may have partially remodeled; the quality of the anastomosis and the selection of the target site are critical determinants of whether the territory recovers function
- Intraoperative flow measurement is the quality standard for bypass graft assessment — transit-time flow measurement (TTFM) using a Transonic flow probe provides real-time quantification of graft flow and pulsatility index (PI) immediately after anastomosis construction; a PI below 3.0 and a mean flow above 20 mL/min are the accepted thresholds for a technically adequate graft; intraoperative TTFM allows the surgeon to identify and correct suboptimal anastomoses before the chest is closed, rather than discovering graft failure weeks later on imaging
About Dr. Xu Zhiyun 徐志云
Dr. Xu Zhiyun is a Senior Cardiac Surgeon at the Department of Cardiovascular Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine — one of China's most prestigious academic medical centers. With more than two decades of dedicated experience in complex coronary revascularization and off-pump bypass surgery, Dr. Xu is among the most experienced OPCABG surgeons in China, with a personal case volume and technical repertoire that places him at the frontier of beating-heart cardiac surgery.
His clinical expertise spans:
- Off-pump coronary artery bypass grafting (OPCABG) for complex multivessel disease — complete revascularization on the beating heart in patients with high SYNTAX scores, left main disease, chronic total occlusions, and high-risk comorbidity profiles including renal impairment, diabetes, COPD, and aortic calcification; Dr. Xu's technique incorporates progressive cardiac displacement, sequential anastomosis, and real-time hemodynamic management to achieve complete revascularization without cardiopulmonary bypass
- Total arterial revascularization strategies — full arterial conduit planning using LIMA, bilateral radial arteries, and right internal mammary artery (RIMA) to maximize long-term graft patency and eliminate the 10-year attrition of saphenous vein grafts, particularly in diabetic patients where vein graft atherosclerosis is accelerated
- High-risk CABG in patients with reduced ejection fraction — surgical revascularization in patients with impaired left ventricular function (LVEF 30–45%), where the goal is not only complete revascularization but myocardial hibernation recovery — restoring contractile function to ischemic but viable myocardium through durable arterial grafting
- Redo cardiac surgery and complex reoperations — repeat coronary revascularization and valve surgery in patients with prior cardiac procedures, where adhesions, altered anatomy, and prior conduit use demand advanced surgical planning and technique
- Hybrid coronary revascularization — coordinated LIMA-to-LAD surgical grafting combined with PCI for non-LAD vessels in selected patients, integrating the durability of arterial bypass with the minimally invasive access of catheter-based intervention
- Intraoperative quality assurance — systematic use of transit-time flow measurement (Transonic) and transesophageal echocardiography (TEE) for real-time graft assessment and hemodynamic monitoring, ensuring anastomotic quality is confirmed before chest closure
The Case That Proved "Too High Risk" Was Not the Final Answer
The Situation
A 68-year-old retired technical worker. Eighteen months of progressive exertional chest tightness, now occurring at rest. Left main ostial stenosis 80%. LAD diffuse calcification with tandem lesions 70–90%. Circumflex OM2 chronic total occlusion. RCA mid-segment 75% stenosis. SYNTAX score 33. LVEF 36% with anterior and inferior wall motion abnormalities. Type 2 diabetes 11 years (HbA1c 7.6%). Hypertension 14 years. CKD Stage 3a (eGFR 52). Mild-to-moderate COPD. Aortic CTA showing calcified plaques on the ascending aorta — not porcelain, but sufficient to elevate stroke risk with aortic cross-clamping. A cardiac team consensus: PCI long-term failure risk unacceptably high; conventional on-pump CABG stroke and AKI risk significantly elevated; clear indication for OPCABG. One question: is there a cardiac surgeon with the experience, the technique, and the team to perform complete off-pump revascularization safely in this patient?
The Assessment
Dr. Xu reviewed Mr. Li's complete workup — the angiogram, the echocardiogram, the aortic CTA, the pulmonary function tests, and the renal panel. He studied the coronary anatomy with the attention of a surgeon planning every millimeter of the operation: the ostial left main lesion, the calcified LAD with its tandem stenoses, the OM2 CTO and its distal target, the RCA lesion and the PDA territory. He reviewed the aortic calcification pattern and confirmed that a no-touch aortic technique — avoiding any manipulation of the ascending aorta — was both feasible and necessary.
His graft strategy was total arterial revascularization: LIMA to LAD (the gold standard conduit for the most critical vessel), right radial artery to OM (targeting the CTO territory), and left radial artery to PDA (completing the right coronary territory). No saphenous vein. No aortic cross-clamp. No cardiopulmonary bypass.
He explained his approach to Mr. Li and his family with the directness of a surgeon who has had this conversation many times:
"Your heart is still fighting. The muscle is ischemic — it is not receiving the blood it needs — but it is not dead. If we restore flow through durable arterial grafts, the hibernating myocardium has a real chance to recover. The off-pump approach protects your kidneys and your brain. The total arterial strategy means these grafts should last the rest of your life. The operation is technically demanding, but it is what your anatomy requires — and it is what we do."
He told them what the procedure would involve, what the risks were, and what a successful outcome could look like. He did not minimize the complexity. He offered a plan — and the experience to execute it.
The Procedure
Dr. Xu led the operative team in a complete off-pump coronary artery bypass grafting (OPCABG) with total arterial revascularization — four anastomoses, beating heart, no cardiopulmonary bypass.
The anesthesia team placed a PiCCO catheter for continuous cardiac output monitoring and a transesophageal echocardiography (TEE) probe for real-time ventricular function assessment. Norepinephrine was prepared on a precision infusion pump; temporary pacing wires were positioned. The hemodynamic safety net was in place before the first incision.
Conduit harvest proceeded in parallel: the left internal mammary artery (LIMA) was harvested as a pedicled graft; the right radial artery and left radial artery were harvested with meticulous attention to vasospasm prevention. All three conduits were assessed for quality and flow before anastomosis.
The heart was stabilized using an Octopus mechanical stabilizer — a suction-based device that immobilizes a defined segment of the epicardium while the heart continues to beat. Dr. Xu employed a progressive displacement and sequential anastomosis technique: each target vessel was exposed in sequence, with the heart repositioned incrementally to minimize right ventricular compression and hemodynamic perturbation at each step.
The LIMA-to-LAD anastomosis — the most critical graft — presented the primary technical challenge of the case. The mid-distal LAD calcification caused target point mobility during cardiac motion, and during cardiac displacement for exposure, the mean arterial pressure fell transiently to 65 mmHg. Dr. Xu responded immediately: he adjusted the stabilizer angle to optimize exposure while reducing cardiac displacement, and converted to a partial side-clamp with a brief bloodless field technique to complete the anastomosis with precision. The heart continued to beat throughout. The bypass machine was never activated.
The right radial artery to OM anastomosis targeted the distal vessel beyond the CTO, restoring antegrade flow to the circumflex territory. The left radial artery to PDA anastomosis completed revascularization of the right coronary territory.
Immediately after each anastomosis, transit-time flow measurement (Transonic) was performed. The LIMA-LAD graft recorded a mean flow of 48 mL/min and a pulsatility index (PI) of 2.1 — well within the thresholds for a technically excellent anastomosis. TEE confirmed no new regional wall motion abnormalities and no anastomotic leak at any graft site. Four vessels. Four grafts. Beating heart. Complete revascularization confirmed.
The Recovery
Mr. Li spent 28 hours in the ICU. He was extubated on postoperative day 1. On day 2, he stood at the bedside. On day 4, he was transferred to the general ward.
His laboratory results told the story of a protected recovery: peak troponin T of 0.21 ng/L — a minor elevation consistent with myocardial handling during stabilization, not ischemic injury. His eGFR moved from 52 to 49 mL/min/1.73m² — a minimal, clinically stable change, with no acute kidney injury. He required no allogeneic blood transfusion.
At discharge, his CCS angina class had improved from Class III to Class I. His six-minute walk distance had increased from 290 meters to 410 meters.
At his six-month follow-up, coronary CTA confirmed all four bypass grafts patent. His LVEF had risen from 36% to 45% — the hibernating myocardium, freed from chronic ischemia by durable arterial revascularization, had recovered. His HbA1c was controlled at 6.9%. He had returned to household activities and his daily walk in the park.
His wife called CMCS on the morning he completed his first full circuit of the park without stopping. She said: "He's the man I married again."
Outcome Summary
- ✅ Complete off-pump revascularization achieved — four-vessel CABG performed on the beating heart without cardiopulmonary bypass, eliminating bypass-associated stroke and AKI risk in a patient with CKD Stage 3a and aortic calcification
- ✅ Total arterial revascularization with three conduits — LIMA to LAD, right radial to OM, left radial to PDA; no saphenous vein grafts; long-term patency optimized for a diabetic patient where vein graft atherosclerosis is accelerated
- ✅ LVEF recovered from 36% to 45% — hibernating myocardium restored to contractile function at six-month follow-up echocardiogram, confirming successful revascularization of ischemic but viable myocardium
- ✅ All four grafts patent at six months — coronary CTA confirmed complete graft patency across all anastomotic sites at six-month follow-up
- ✅ Renal function preserved — eGFR 52 → 49 mL/min/1.73m²; no acute kidney injury; no dialysis; off-pump strategy protected the kidneys throughout
- ✅ CCS Class III → Class I — complete resolution of angina symptoms; six-minute walk distance improved from 290 to 410 meters at discharge
- ✅ No allogeneic blood transfusion — meticulous hemostasis and off-pump technique minimized blood loss throughout the procedure
- ✅ Intraoperative quality confirmed — LIMA-LAD flow 48 mL/min, PI 2.1 by Transonic; TEE confirmed no new wall motion abnormalities and no anastomotic leak at any graft site
- ✅ World-class outcome at a fraction of the cost — complex off-pump total arterial CABG in Shanghai at a fraction of US or European costs, with surgical expertise, monitoring technology, and postoperative care that matched or exceeded what is available at the world's leading cardiac centers
"He was 68. SYNTAX score 33. An ejection fraction of 36%. Diabetes, chronic kidney disease, and COPD. Every surgeon he saw said the risk was too high for conventional bypass. Dr. Xu Zhiyun at Ruijin Hospital performed a complete off-pump, total arterial revascularization — four grafts, beating heart, no bypass machine. Six months later, all four grafts were patent, his ejection fraction had risen to 45%, and he was walking in the park every morning."
Why Shanghai for Complex Coronary Bypass Surgery?
- World-class outcomes at a fraction of the cost — complex OPCABG and total arterial revascularization in Shanghai costs a fraction of what it would in the US or Europe, with access to the same stabilization technology, flow measurement systems, and intraoperative monitoring used at the world's leading cardiac surgical centers, without the prohibitive costs or the waiting lists
- Off-pump expertise that is genuinely rare — OPCABG in high-complexity multivessel disease is technically demanding; the volume of experience required to execute it safely in patients with SYNTAX scores above 30, reduced ejection fraction, and significant comorbidities is not available at most centers; Dr. Xu's two-decade, high-volume OPCABG practice represents a level of expertise that is genuinely difficult to find outside of a small number of specialized centers worldwide
- Total arterial revascularization as standard practice — the evidence for total arterial revascularization in diabetic patients is compelling, but the technical demands of bilateral radial artery harvesting and multi-conduit anastomosis mean that many centers default to saphenous vein grafts for simplicity; at Ruijin Hospital, total arterial strategies are standard practice for appropriate candidates, not an exception
- Multidisciplinary cardiac team decision-making — Mr. Li's operative strategy was determined by a joint cardiac team including cardiology, cardiac surgery, anesthesia, and cardiac imaging; the decision to proceed with OPCABG rather than PCI or on-pump CABG was a consensus recommendation, not a unilateral surgical judgment; this multidisciplinary model ensures that every patient receives the revascularization strategy that is genuinely optimal for their anatomy and comorbidity profile
- Intraoperative quality assurance as standard — transit-time flow measurement and intraoperative TEE are standard components of Dr. Xu's operative protocol, not optional add-ons; every graft is assessed before the chest is closed, and every anastomosis is confirmed by imaging; this commitment to intraoperative quality control is the foundation of durable long-term outcomes
How CMCS Supports International Patients Seeking Complex Cardiac Surgery in Shanghai
- 🏥 Specialist access — direct connection to Dr. Xu Zhiyun and Ruijin Hospital's Department of Cardiovascular Surgery, including priority appointment coordination for patients with urgent or complex presentations
- 📋 Coronary angiograms, echocardiograms, CT imaging, pulmonary function tests, renal panels, and prior surgical records translation & coordination
- 🗣️ On-site medical interpretation at every consultation, procedure, and follow-up
- ✈️ Travel & logistics coordination — visa, accommodation, airport transfers
- 📞 24/7 concierge support from first inquiry through every stage of treatment
- 🔄 Post-treatment follow-up — coronary CTA scheduling, cardiac rehabilitation coordination, graft surveillance planning, and long-term cardiology follow-up support
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