DR. MATTHEW DOMINIC BACCHETTA, MD

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This study looked at how the length of time a donor's heart is without blood flow (asystolic warm ischemic time or AWIT) affects the survival and health of heart transplant recipients who received hearts from donors after circulatory death. Researchers found that if the AWIT was 10 minutes or longer, the risk of dying within 90 days increased significantly (over six times higher) and there was also a higher chance of serious complications with the new heart. These findings highlight the importance of reducing AWIT to improve outcomes for heart transplant patients. Who this helps: This helps patients receiving heart transplants from donors after circulatory death.

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This study looked at two ways to preserve donor hearts before transplant: one used ice and the other used a method called 10 °C preservation. They analyzed data from 147 heart transplant patients and found that those who received hearts preserved at 10 °C experienced much better outcomes, including 43% lower rates of severe heart dysfunction and a 50% reduction in hospital stays in the ICU. This matters because improving how donor hearts are preserved can lead to better recovery for transplant patients and reduce healthcare costs. Who this helps: This helps heart transplant patients and their doctors.

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Researchers studied a new method to quickly prepare a donor heart for transplantation after it was without blood flow for 8 hours. They found that this "reanimation-less" technique successfully retrieved a heart from a 45-year-old donor, leading to a successful transplant with normal heart function for at least 8 months. This approach can potentially expand the availability of donor hearts and improve outcomes for patients awaiting transplants. Who this helps: Patients in need of heart transplants.

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This study looked at whether using physician assistants (PAs) to recover hearts for transplantation affects patient outcomes compared to traditional recovery teams. The study involved 497 heart transplants, finding that severe complications and 30-day survival rates were similar between the two groups (7.7% and 5.2% for complications, and 96.9% and 96.3% for survival). However, using PAs reduced the amount of time surgeons needed to spend on recovery, allowing more hearts to be transplanted, especially for patients who are more difficult to match, increasing surgeries from 0.03 to 0.89 per month. Who this helps: This benefits patients waiting for heart transplants by increasing the number of available surgeries.

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This study looked at how the age of heart donors affects the success of heart transplants and found that storing donor hearts at a cooler temperature of 10 °C leads to better outcomes than traditional ice storage. Specifically, using this method reduced the risk of severe complications in older donors, with only 0% of hearts from donors older than 45 showing severe dysfunction when stored at 10 °C, compared to 8.7% for those stored in ice. This is important because cooler storage could help more older donor hearts be successfully used for transplants, improving survival rates for patients receiving them. Who this helps: This benefits heart transplant patients and potentially increases the number of available donor hearts.

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This study looked at how a condition called intraoperative oxygen debt affects early recovery after heart transplants from donors whose hearts had stopped beating for a while. Researchers found that among 112 heart transplant recipients, those with longer periods of no blood flow combined with high oxygen debt had significantly worse outcomes: 22% experienced severe heart dysfunction, and 22% died within 90 days. Lower oxygen debt during the surgery led to better results, suggesting that managing oxygen levels in the operating room might be crucial for improving survival and recovery in these patients. Who this helps: Heart transplant patients, particularly those receiving organs from donation-after-circulatory-death donors.

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Researchers studied a new method for heart transplants from donors who have suffered circulatory death, called Rapid Ultraoxygenated Recovery (REUP). They performed transplants on 24 patients using REUP on donor hearts, which included older donors (up to 80% over the age of 40) and longer preservation times (some hearts were preserved for up to 8 hours). The results showed a 96% survival rate after 30 days with only 4% experiencing severe complications, suggesting this method is safe and effective, which is important for increasing heart transplant options. Who this helps: This research benefits patients in need of heart transplants, especially those who may be facing long wait times.

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This study explored a new method for recovering donor hearts from individuals who have died from a lack of circulation but without reviving the heart before using it for transplantation. Researchers successfully used their technique on a 32-year-old donor whose heart had been still for 37 minutes, and after the transplant, the patient had good heart function and recovery. This is important because it expands the possibility of using more donated hearts for transplantation, especially in cases where a prolonged period without heart activity has occurred. Who this helps: This benefits patients waiting for heart transplants by increasing the availability of donor hearts.

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This study looked at how long the heart is without blood flow during donation after circulatory death (DCD) and how that affects heart transplant outcomes. Researchers found that when the time without blood flow exceeds 12 minutes, patients face higher risks of severe heart problems and death, with a 90-day death rate of about 29% for those with longer warm ischemic times. These findings highlight the importance of timely declaration of death and better management of organ recovery to improve the success of heart transplants. Who this helps: This helps heart transplant patients and medical professionals involved in organ donation and transplantation.

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This study looked at how preserving heart grafts at a cooler temperature of 10 °C compares to the traditional ice method in improving transplant outcomes. Researchers found that using 10 °C storage led to lower severe complications and a 64% reduction in 30-day mortality despite using older donors for transplants. This method also allowed for the safe use of more high-risk donors without increasing the death rate. Who this helps: This helps patients needing heart transplants by increasing the availability of suitable grafts and improving their chances of recovery.

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This study looked at new methods for transplanting hearts from donors who have died after their heart stopped, known as donation after circulatory death (DCD). Researchers found that using techniques like hypothermic oxygenated machine perfusion (HOPE) and rapid recovery with extended ultra-oxygenated preservation (REUP) led to successful heart transplants without needing to reanimate the donor heart beforehand. This is important because it simplifies the process, reduces costs, and addresses ethical concerns, potentially changing how heart transplants are performed. Who this helps: This benefits doctors and patients needing heart transplants, especially those waiting for a suitable donor.

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This study looked at how the body's use of oxygen during heart surgery affects recovery. Researchers found that patients with a high oxygen extraction ratio had worse outcomes, including a doubled risk of major complications and a 60% higher chance of kidney injury. By maintaining a higher level of oxygen delivery during surgery, the risks could potentially be reduced significantly. Who this helps: This information benefits patients undergoing heart surgery and their healthcare providers.

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This study looked at how oxygen delivery and the time a heart is without blood flow (warm ischemia) affect outcomes after heart transplants from donors whose hearts had stopped beating (DCD). Researchers found that patients who experienced longer periods without adequate oxygen had significantly worse outcomes; 23.8% of those in the high-risk group had severe heart issues after the transplant, compared to none in the low-risk group. This is important because improving oxygen delivery during transplant can reduce damage to the heart and improve survival rates. Who this helps: This helps patients receiving heart transplants and their doctors.

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This research looked at heart transplant patients who had previous surgeries involving opening the chest (sternotomies) to see how this affected their recovery and survival after the transplant. They found that patients with one prior sternotomy had lower survival rates at 30 days (93.6%), 1 year (89.4%), and 2 years (86.6%) compared to patients with no prior sternotomy, and those with two or more prior sternotomies had even lower survival rates (90.1% at 30 days, 87.3% at 1 year, and 80.4% at 2 years). While having more than one prior sternotomy wasn’t linked to additional survival risk, patients with previous surgeries needed more blood transfusions and faced higher risks of complications. Who this helps: This information helps doctors make better decisions for patients who have had previous chest surgeries and are considering heart transplants.

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This study looked at how a technique called normothermic regional perfusion (NRP) affects the outcomes of ex vivo lung perfusion (EVLP), which is used to evaluate lungs from donors who have died from circulatory causes. Researchers analyzed 187 donor lungs and found that the decline rates for usable lungs were similar whether they had NRP or were quickly procured without it, with 52% for the NRP group and 50% for the rapid procurement group. This matters because it shows that using NRP does not increase the risk of losing potentially usable donor lungs, which could improve the availability of organs for transplants. Who this helps: This helps doctors and patients in need of lung transplants.

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This study looked at three patients with a severe type of lung disease who were not getting enough oxygen, despite being on a special breathing machine called V-V ECMO. By adding another machine, called V-A ECMO, these patients were able to survive long enough for a lung transplant, with all three successfully receiving transplants within 2 to 8 days and recovering well afterward. This finding is important because it shows that using both types of ECMO can help keep critically ill lung patients stable until they can receive transplants. Who this helps: This helps patients with severe lung disease who are awaiting transplant and their doctors who care for them.

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Researchers studied a new system for preserving donated livers that come from patients whose hearts have stopped, known as Donation After Circulatory Death (DCD). They found that using their Dynamic Organ Storage System (DOSS) instead of traditional methods led to better liver function results, including lower levels of lactate and higher bile production, which indicates improved health of the liver. This is important because it can make liver transplants safer and more successful, potentially increasing the number of usable organs for patients in need. Who this helps: This helps patients awaiting liver transplants.

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Researchers studied how the structure and cell types in the lungs change in people with pulmonary fibrosis (PF). They examined 1.6 million cells from 35 lungs and found that PF leads to specific cell changes, starting with changes in alveolar cells and moving to altered macrophage behavior. This is significant because it helps us understand the progression of lung damage in PF, paving the way for better-targeted treatments. Who this helps: This helps patients with pulmonary fibrosis and their doctors.

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Researchers studied bottlenose dolphins in the Mediterranean Sea to understand if different types, or ecotypes, of dolphins live together in the area. They analyzed data from over 4,900 dolphins collected between 2004 and 2019 and found that most dolphins prefer to live near the continental shelf instead of the open ocean, and they did not find evidence of different dolphin types coexisting as previously thought. This matters because it provides clarity on dolphin populations in the Mediterranean, which is crucial for conservation efforts. Who this helps: This helps conservationists and marine biologists working to protect dolphin populations.

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This study looked at the outcomes of lung transplants from donors who died from circulatory causes and were treated using a method called normothermic regional perfusion (NRP) between January 2020 and June 2024. Out of nearly 1,000 lung transplants studied, 92 used NRP, and researchers found that there were no significant differences in survival rates or complications within 90 days after the transplant for those who received lungs from NRP donors compared to those who did not. This is important because it suggests that using NRP can be a viable option for recovering lungs for transplantation, potentially increasing the number of available organs. Who this helps: Patients needing lung transplants.

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This study looked at how storing pig livers at 10 degrees Celsius instead of ice affects their health after being donated from animals that had died. The researchers found that livers stored at 10 degrees showed improvements like better blood flow and higher bile production, with fewer signs of damage compared to those stored on ice. These results matter because they indicate that this storage method could help preserve organ quality for transplants. Who this helps: This benefits doctors and patients needing liver transplants.

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This study looked at how well donor hearts can be preserved for longer periods when stored at a cool temperature of 10ºC. Researchers successfully transported a heart from Anchorage, AK, to a recipient center about 2,700 nautical miles away, keeping it safe for over 10 hours. The heart worked very well after transplantation, showing that hearts can be successfully used even after longer travel times, which is important for expanding access to donor organs. Who this helps: This benefits patients who need heart transplants and increases the number of viable donor hearts available.

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This study focused on developing a low-cost, programmable blood pump console for extracorporeal membrane oxygenation (ECMO), which is a life-saving treatment for patients with severe heart and lung problems. The new console can be built for under $200 and operates at essential levels of flow and pressure, exceeding typical clinical standards. This matters because it opens up possibilities for researchers to customize and innovate in ECMO technology, making advancements more accessible and fostering improvements in patient care. Who this helps: This benefits researchers, engineers, and ultimately patients needing advanced ECMO support.

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This study examined how to improve the care and management of patients with severe pulmonary arterial hypertension (PAH) who need lung transplants. A group of 29 experts reached a consensus on 141 key recommendations out of 223 statements, agreeing that lung transplants should be offered even to patients who are very ill or have other serious health issues. They emphasized the importance of early discussions about transplantation options and recommended specific procedures and monitoring methods to support these patients during and after surgery. Who this helps: Patients with advanced pulmonary arterial hypertension needing lung transplants and their healthcare providers.

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This study looked at the effects of warm ischemic time (the time the heart is without blood flow and oxygen) on heart transplant outcomes after organs are donated from people who died from circulatory failure. Researchers found that in a group of 135 heart transplant recipients, 7.4% experienced severe primary graft dysfunction (PGD), and those with more than 23 minutes of low oxygen during warm ischemia had a significantly higher risk of severe PGD (13.6% compared to 1.7% for those under that time). This matters because understanding these time limits can help prevent healthy hearts from being discarded unnecessarily, improving transplant outcomes. Who this helps: Patients waiting for heart transplants.

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This study focused on using a method called ex vivo lung perfusion (EVLP) to evaluate and potentially improve the quality of lungs available for transplant. Researchers found that using EVLP could increase the number of lungs suitable for transplantation by about 20%, similar in outcome to standard lung transplants, but emphasized the need for careful assessment of lung quality before deciding on transplantation. This matters because it could provide more patients with access to life-saving lung transplants. Who this helps: This helps patients in need of lung transplants, especially those who might otherwise be denied due to lung quality concerns.

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This study looked at new ways to evaluate, improve, and even create organs for patients with severe organ diseases, addressing the critical shortage of donated organs. Researchers found that better assessment methods and advanced tools for preserving and repairing organs could make more organs suitable for transplantation. For example, new techniques can help keep damaged organs usable, which might increase the number of transplants available. Who this helps: This benefits patients waiting for organ transplants.

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This study looked at a new way to recover hearts for transplantation from donors who have died, without using complicated machines or methods. The researchers successfully transplanted three hearts using this technique, and the results were excellent—each heart worked well post-surgery, showing no signs of rejection and no problems during recovery. This method simplifies the process and could make more donor hearts available for patients in need of transplants. Who this helps: This benefits heart transplant patients waiting for suitable donor organs.

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This study looked at patients experiencing a severe condition called mixed shock, which combines heart failure and infections, to see if higher levels of artificial life support (called VA-ECLS) would help them survive. Out of 452 patients, 63% died, but those who received more support at 24 hours had a higher survival rate of about 42.6% compared to 33.8% for those with less support. This is important because it suggests that providing more support could help improve survival rates for these critically ill patients. Who this helps: Patients suffering from mixed shock.

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This study focuses on a young man who suffered severe lung injuries after a 40-foot fall, leading to significant bleeding in his lungs and respiratory failure. He was treated with a specialized heart-lung machine called venovenous ECMO, which helped keep him alive while doctors also fixed his broken bones. The innovative use of sedation during this treatment helped him recover, showing that this method can be effective in similar severe trauma cases. Who this helps: This benefits trauma patients who experience severe lung injuries and their medical teams.

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This study looked at whether switching from the University of Wisconsin solution to Del Nido cardioplegia for heart transplants made any difference in patient outcomes. Researchers found that while there were no major differences in severe complications or early deaths between the two methods, patients receiving Del Nido had faster lactate clearance, suggesting better initial heart function. However, they also had longer stays in the ICU and hospital. Who this helps: This helps doctors and patients needing heart transplants by providing insights into preservation methods.

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This study looked at how the introduction of a new scoring system, the lung composite allocation score (CAS), affected the use of extracorporeal membrane oxygenation bridge to transplant (ECMO-BTT) for lung transplant patients. After CAS was implemented, patients using ECMO-BTT were younger and had shorter wait times for transplants; specifically, wait times decreased notably for those with high allocation scores. Overall, patients who received transplants without ECMO-BTT had a better chance of surviving one year after the surgery in the CAS era compared to the previous year, with survival rates of 92% versus 90%. Who this helps: This research benefits lung transplant patients and healthcare providers by highlighting changes in transplant practices and outcomes.

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This study examined a technique called remote, centralized ex vivo lung perfusion (rc-EVLP), which helps increase the number of donor lungs available for transplant, especially from donors with less-than-ideal conditions. Researchers found that 56% of the assessed lungs were successfully transplanted after being evaluated with rc-EVLP, and the one-year survival rate for recipients was an impressive 93%. This method makes it possible to use more donor lungs while maintaining high survival rates, which could help address the ongoing shortage of transplantable organs. Who this helps: Patients in need of lung transplants.

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The study looked at why some people on the lung transplant waitlist are removed due to health declines or death, particularly before and after a new scoring system was put in place in 2022. Researchers found that several factors increased the risk of being removed from the waitlist, including needing a machine for breathing support, having a low weight, and having a specific blood type (type O). Understanding these risk factors is crucial for better monitoring of at-risk patients, which can potentially improve their chances of getting a transplant. Who this helps: This helps patients waiting for a lung transplant and their doctors.

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The ECMO-Free Trial is studying whether a daily check on patients' readiness to stop using a life-support machine (known as venovenous extracorporeal membrane oxygenation or V-V ECMO) can help them stop using it faster compared to standard care. The trial involves 225 adults across seven hospitals in North America and will track how long it takes to safely disconnect patients from ECMO over 60 days. This is important because finding a quicker and safer way to free patients from ECMO could lead to better health outcomes for those who need this support. Who this helps: This benefits patients on ECMO and their healthcare providers.

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This study explored how injuries and diseases affect the electrical properties of lung tissues. Researchers examined lung tissues from rats and humans and found that healthy lung tissue had a bioimpedance (a measure of electrical resistance) of about 70.8 ohms, while fibrotic lung tissue had a significantly higher bioimpedance of 132.1 ohms. Understanding these changes can lead to quicker and more accurate diagnoses of lung conditions, which is crucial for better treatment outcomes. Who this helps: This helps patients with lung diseases and their doctors.

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This study explored how a combination of hypertonic saline (a salt solution) and mechanical vibrations can help open the tight junctions between airway cells in rats. The researchers found that this combination significantly increased the permeability of the airway epithelium, which could make it easier for drugs to be absorbed in the lungs. This matters because it offers a new and safe method to improve the delivery of medications directly to the lungs, potentially leading to better treatments for respiratory conditions. Who this helps: This benefits patients with respiratory diseases who need effective lung medication.

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This study looked at a method to improve discarded human lungs to make them usable for transplantation by connecting them to the blood circulation of pigs. The researchers found that after the lungs were treated in this way, they showed no signs of a severe immune reaction known as hyperacute rejection when they were later connected back to human blood. This is significant because it means this technique could help recover more donor lungs for transplantation, potentially saving more lives. Who this helps: This helps patients in need of lung transplants.

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This study looked at how different levels of blood thinning medication (anticoagulation) during a treatment called venovenous ECMO affect bleeding and clotting issues in severely ill patients. Out of 26 patients, major bleeding happened in 1 of 12 (8.3%) in the low-intensity group and 4 of 14 (28.6%) in the moderate-intensity group, suggesting that lower intensity may reduce serious bleeding risks. Given that no patients died in the low-intensity group compared to 2 in the moderate group who experienced major bleeding, this matters because it could offer a safer option for patients needing ECMO support. Who this helps: Patients undergoing venovenous ECMO treatment.

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This study looked at how to improve damaged donor lungs so they can be used for transplants. Researchers tested various methods on 23 lungs, including 17 that were injured, to develop a new approach combining therapy and diagnosis, which they called "theranostic." They found that using certain treatments allowed for real-time monitoring and improvements in lung function, with a focus on enhancing the viability of donor lungs that would otherwise be discarded. Who this helps: This benefits patients needing lung transplants and the doctors who provide their care.

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This study looked at the care and transport of donated hearts, comparing traditional ice storage to a new method using a cooler at 10 °C. The research found that using the 10 °C cooler resulted in hearts staying viable for longer (222 minutes compared to 193 minutes on ice) and having better functioning after transplant, with lower lactate levels (3.6 vs. 5.1 mmol/L) and a higher cardiac index score after 24 and 72 hours. This matters because it could mean better outcomes for heart transplant patients, making it easier to transport donated hearts and potentially expanding the number of usable organs. Who this helps: Heart transplant patients and their doctors.