Lung volume reduction surgery (LVRS) is an operation for people with severe emphysema that removes the most damaged, overinflated portions of the lungs so the remaining healthier tissue can work more effectively. It sounds counterintuitive: taking out part of a lung to help someone breathe better. But in emphysema, destroyed air sacs trap air and balloon outward, crowding out functional tissue and flattening the diaphragm. Removing those nonfunctional areas restores the mechanics of breathing in ways that medication alone cannot.
How the Surgery Improves Breathing
In healthy lungs, the diaphragm sits in a dome shape and contracts downward to pull air in. Emphysema changes that. Destroyed air sacs lose their elasticity and fill with trapped air, causing the lungs to hyperinflate. The oversized lungs push the diaphragm flat, and a flat diaphragm can’t contract efficiently. Breathing becomes shallow, exhausting work.
LVRS targets the worst areas, typically removing 20 to 30 percent of each lung. Once that dead space is gone, several things happen at once. The remaining lung tissue has room to expand properly. The diaphragm returns to a more domed position and regains its pumping ability. The elastic recoil of the lungs improves, meaning air flows out more easily on each exhale instead of getting trapped. The net effect is that each breath moves more air with less effort, reducing the constant sense of breathlessness that defines severe emphysema.
Who Qualifies for LVRS
Not everyone with emphysema is a candidate. The surgery works best in a specific group of patients, and selection criteria come largely from the National Emphysema Treatment Trial (NETT), the largest study ever conducted on the procedure. That trial, published in the New England Journal of Medicine, established the boundaries that surgeons still follow.
The strongest candidates have emphysema concentrated in the upper lobes of the lungs, with relatively preserved tissue elsewhere. This heterogeneous pattern gives surgeons a clear target: remove the worst sections and leave the better ones to do the work. Patients with damage spread evenly throughout both lungs (homogeneous emphysema) and those with very low exercise capacity tend to see little benefit and face higher surgical risk.
Specific thresholds matter. Patients whose lung function falls below 20 percent of predicted values, combined with either homogeneous emphysema or very poor gas exchange, were identified in the NETT trial as high-risk for death after surgery with minimal chance of improvement. They are generally excluded. All candidates must have quit smoking, typically for at least three to six months before being considered. Other major conditions that could limit survival or interfere with recovery, such as pulmonary fibrosis, also rule patients out.
Surgical Approaches
Surgeons perform LVRS through two main approaches. The first is video-assisted thoracoscopic surgery (VATS), a minimally invasive technique using small incisions and a camera to guide the operation. The second is median sternotomy, an open approach through the breastbone. Both typically address both lungs in a single session.
Outcomes between the two are comparable. A subanalysis from the NETT trial found that major complication rates were similar: about 13 percent for VATS and 17 percent for sternotomy. VATS procedures took slightly longer in the operating room (around 155 minutes versus 129 minutes) but may cause slightly less physical stress, making it a reasonable choice for the most compromised patients. Most centers today favor VATS when feasible.
The Bronchoscopic Alternative
A newer, less invasive option called bronchoscopic lung volume reduction (BLVR) uses one-way valves placed through a scope threaded into the airways. These valves block airflow into the most damaged sections, causing them to deflate and shrink over time, mimicking the effect of surgery without an incision.
Valves work only in patients whose lung lobes are well sealed from each other, a condition called absence of collateral ventilation. If air leaks freely between lobes, the valves can’t deflate the target area. Doctors test for this during a bronchoscopy before deciding on treatment. In the CELEB trial, a head-to-head comparison of surgery versus valves in patients eligible for both, the clinical team assessed each person’s emphysema pattern on CT scans and perfusion imaging, then confirmed the absence of collateral ventilation before randomizing treatment.
For patients with heterogeneous emphysema and no collateral ventilation, either approach can be effective. But some people have non-anatomical patterns of damage where surgery may be more suitable. The choice depends on the individual’s anatomy, lung function, and the judgment of a specialized multidisciplinary team.
What Recovery Looks Like
LVRS requires significant preparation and follow-up. Medicare’s coverage requirements reflect this: patients must complete a 6- to 10-week preoperative pulmonary rehabilitation program consisting of at least 16 sessions, each lasting a minimum of two hours. This conditioning phase builds strength and endurance before the physical stress of surgery.
Hospital stays after lung surgery typically run about five days, though individual recovery varies. After discharge, patients return for a structured postoperative rehabilitation program of 6 to 10 sessions within eight to nine weeks of surgery. The entire process, from first rehab session to completing post-surgical recovery, spans roughly four to five months.
Functional improvements can be substantial. Walking ability, measured by a standardized six-minute walk test, commonly increases by 25 meters or more, which is considered clinically meaningful. Patients with the poorest baseline function often see the largest gains, with some improving by 100 meters, roughly the length of a football field added to their walking distance.
Risks and Complications
LVRS is a major operation on already fragile lungs, and complication rates reflect that. Studies report overall perioperative complication rates ranging from 30 to 87 percent, though many of these are minor and manageable. The most common issue is prolonged air leak, where air escapes from the cut surface of the lung into the chest cavity. This occurs in roughly 60 percent of patients and sometimes persists for more than 10 days, requiring extended chest tube drainage.
Respiratory tract infections develop in about 18 percent of cases. Cardiac complications, including irregular heart rhythms and reduced blood flow to the heart, occur less frequently but are more serious, particularly in patients who develop respiratory failure after surgery. About one in five patients in some series experienced respiratory failure requiring mechanical ventilation, and those patients had significantly higher rates of cardiac problems.
Long-Term Survival
For well-selected patients, LVRS offers meaningful survival benefits. The NETT trial showed that patients with upper-lobe emphysema and low exercise capacity had the clearest advantage over medical therapy alone. More recent data show one-year survival rates of 92 to 100 percent and five-year survival rates around 49 to 54 percent, regardless of whether the emphysema was concentrated in the upper or lower lobes. The median follow-up in recent surgical series is about 4.5 years.
These numbers reflect the reality that emphysema is a progressive disease. LVRS doesn’t cure it. The benefits tend to peak in the first one to two years and gradually diminish as the underlying condition advances. But for people who were struggling to walk across a room, gaining several years of improved breathing and greater independence represents a significant change in quality of life.
Insurance Coverage Requirements
Medicare covers LVRS, but only at certified facilities. The surgery must be performed at a hospital certified under the Joint Commission’s LVRS Disease-Specific Care program or at an approved Medicare lung or heart-lung transplant center. This requirement ensures that the surgical team, pulmonologists, and rehabilitation staff have the specialized experience the procedure demands.
Coverage also hinges on completing the full pre- and post-surgical rehabilitation programs. The preoperative program must include 16 to 20 sessions over 6 to 10 weeks, and the postoperative program requires 6 to 10 sessions within about two months of surgery. Skipping these phases isn’t just a coverage issue; the rehabilitation is integral to the surgery’s success. Patients who enter the operation in better condition and follow through with recovery exercises consistently have better outcomes.