Publications by authors named "Reed D Quinn"

Objective: To evaluate the midterm survival, clinical, and hemodynamic outcomes of the On-X mechanical mitral valve, based on the 5-year results of the Prospective Randomized On-X Anticoagulation Clinical Trial (PROACT).

Method: PROACT Mitral was a multicenter study evaluating 401 patients who underwent mitral valve replacement (MVR) with either Standard or Conform-X On-X mitral valves, comparing low-dose and standard-dose warfarin. Here we report prespecified secondary outcomes of survival, New York Heart Association (NYHA) functional classification, and valve hemodynamics as assessed by core lab-adjudicated echocardiography at 1, 3, and 5 years in the pooled population.

View Article and Find Full Text PDF

Objective: The optimal approach and choice of initial aortic valve replacement (AVR) is evolving in the growing era of transcatheter AVR. Further survival and hemodynamic data are needed to compare the emerging role of rapid deployment (rdAVR) versus stented (sAVR) valve options for AVR.

Methods: The Northern New England Cardiovascular Database was queried for patients undergoing either isolated AVR or AVR + coronary artery bypass grafting (CABG) with rdAVR or sAVR aortic valves between 2015 and 2021.

View Article and Find Full Text PDF
Article Synopsis
  • The PROACT Mitral trial studied the safety and efficacy of low-dose warfarin (target INR 2.0-2.5) compared to standard-dose warfarin (target INR 2.5-3.5) in patients with an On-X mechanical mitral valve.
  • 401 patients were randomly assigned to either low-dose or standard-dose warfarin after undergoing valve replacement, with a primary focus on events like thromboembolism and bleeding.
  • Results showed that low-dose warfarin did not meet the noninferiority threshold compared to standard-dose, with similar event rates in both groups, indicating low-dose warfarin is not as effective at preventing complications.
View Article and Find Full Text PDF

This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.

View Article and Find Full Text PDF

A 54-year-old male with history of end-stage renal disease secondary to hypertension on hemodialysis with moderate aortic valve insufficiency presented with progressive exertional dyspnea and lower extremity edema over several weeks. Relevant history included hospitalization for bacteremia secondary to dialysis catheter line infection 6 months prior. ().

View Article and Find Full Text PDF

Background: The endothelial glycocalyx (EG) is involved in critical regulatory mechanisms that maintain endothelial vascular integrity. We hypothesized that prolonged cardiopulmonary bypass (CPB) may be associated with EG degradation. We performed an analysis of soluble syndecan-1 levels in relation to duration of CPB, as well as factors associated with cell stress and damage, such as mitochondrial DNA (mtDNA) and inflammation.

View Article and Find Full Text PDF

Background: A patient's hemoglobin (Hb) A level, regardless of diabetic status, is a measure of glycemic control. Studies have found it is an independent predictor of short-term death in patients undergoing coronary artery bypass grafting (CABG). In this study, we used preoperative HbA to assess whether levels are associated with short-term and long-term survival after CABG.

View Article and Find Full Text PDF

Background: Arterial conduits are preferred to venous conduits for coronary artery bypass grafting because of longer patency. A single internal mammary artery (SIMA) is used routinely. Bilateral internal mammary arteries (BIMA) are used less frequently.

View Article and Find Full Text PDF

Background: This study evaluates the influence of bilateral internal mammary artery (BIMA) versus single internal mammary artery (SIMA) grafting on postoperative morbidity and long-term survival among diabetic patients undergoing coronary artery bypass grafting (CABG).

Methods: A multicenter, retrospective analysis of 47,984 consecutive CABGs performed from 1992 to 2014 at 7 medical centers was conducted. Among the study population, 1,482 CABGs with BIMA were identified, and 1,297 BIMA patients were propensity-matched to 1,297 SIMA patients.

View Article and Find Full Text PDF

Background: Although previous studies have demonstrated that patients receiving bilateral internal mammary artery (BIMA) conduits during coronary artery bypass grafting have better long-term survival than those receiving a single internal mammary artery (SIMA), data on risk of repeat revascularization are more limited. In this analysis, we compare the timing, frequency, and type of repeat coronary revascularization among patients receiving BIMA and SIMA.

Methods: We conducted a multicenter, retrospective analysis of 47 984 consecutive coronary artery bypass grafting surgeries performed from 1992 to 2014 among 7 medical centers reporting to a prospectively maintained clinical registry.

View Article and Find Full Text PDF

Background: Of patients undergoing cardiac surgery in the United States, 15% to 20% are re-hospitalized within 30 days. Current models to predict readmission have not evaluated the association between severity of postoperative acute kidney injury (AKI) and 30-day readmissions.

Methods: We collected data from 2,209 consecutive patients who underwent either coronary artery bypass or valve surgery at 7 member hospitals of the Northern New England Cardiovascular Disease Study Group Cardiac Surgery Registry between July 2008 and December 2010.

View Article and Find Full Text PDF
Article Synopsis
  • * A study analyzed data from 1,116 patients who underwent AVR and found that 48% had PH, which worsened the risk of complications like acute kidney injury and in-hospital mortality.
  • * The research concluded that severe PH is linked to higher rates of adverse events during hospitalization and significantly reduces 5-year survival rates after AVR, highlighting the need for careful evaluation before surgery.
View Article and Find Full Text PDF
Article Synopsis
  • About 20% of patients who have cardiac surgery end up being readmitted within 30 days, primarily due to infections and chronic diseases like diabetes and COPD.
  • In a study involving 2,176 patients, those with higher pre-surgery white blood cell (WBC) counts were found to have a greater likelihood of being readmitted within 30 days.
  • These findings suggest that monitoring baseline WBC counts could help healthcare teams identify patients at higher risk for readmission, improving post-surgery care.
View Article and Find Full Text PDF

Background: Acute kidney injury (AKI) is predictive of increased long-term mortality after cardiac surgery. Patients often undergo surgery after cardiac catheterization during the same admission for reasons of instability and threatening anatomy as well as nonurgent reasons such as patient convenience. We hypothesized that patients undergoing cardiac catheterization and cardiac surgery during the same admission are more likely to develop AKI after cardiac surgery than patients for whom surgery is performed on a later admission.

View Article and Find Full Text PDF

An increasing number of reports surrounding neurologic injury in the setting of cardiac surgery has focused on utilizing biomarkers as intermediate outcomes. Previous research has associated cerebral microemboli and neurobehavioral deficits with biomarkers. A leading source of cerebral microemboli is the cardiopulmonary bypass (CPB) circuit.

View Article and Find Full Text PDF

Background: Neurobehavioral impairment is a common complication of coronary bypass surgery. Cerebral microemboli during cardiopulmonary bypass (CPB) are a principal mechanism of cognitive injury. The aim of this work was to study the occurrence of cerebral embolism during CPB and to evaluate the effectiveness of evidence-based CPB circuit component and process changes on the exposure of the patient to emboli.

View Article and Find Full Text PDF

Background: Concomitant aortic (AV) and mitral (MV) valve surgery accounts for 4% of all valve procedures in northern New England. We examined in-hospital and long-term mortality.

Methods And Results: This is a report of a prospective study of 1057 patients undergoing concomitant AV and MV surgery from 1989 to 2007.

View Article and Find Full Text PDF

Background: There is limited information comparing long-term survival after percutaneous coronary intervention (PCI) versus coronary artery bypass grafting (CABG) in patients aged 80 years and older. We studied the long-term survival of octogenarians with multivessel coronary artery disease undergoing PCI or CABG who might have been candidates for either procedure.

Methods: We identified 1693 patients, aged 80 to 89, with two-vessel disease (57.

View Article and Find Full Text PDF

Modified ultrafiltration (MUF) is a novel application of ultrafiltration to remove excess water after cardiopulmonary bypass in pediatric patients that was first reported in 1991. It has gained widespread use as an important adjunct to fluid management in neonates, infants, and pediatric cardiac surgery patients. Now more than two decades after its original description, the exact mechanism of action and effects of this therapy are still a matter of discussion.

View Article and Find Full Text PDF

The devices and techniques used for pediatric cardiopulmonary bypass (CPB) undergo continuous change. New techniques and clinical comparisons of devices are frequently reported in the literature; however, information about the extent to which these techniques and devices are adopted into clinical practice at pediatric heart centers are not well described. We conducted a mail survey of North American pediatric cardiac surgery centers to gain perspective on the extent to which various devices and techniques were used for CPB along with program demographic data.

View Article and Find Full Text PDF

Background: Stroke is a devastating complication of coronary artery bypass graft (CABG) surgery. In-hospital outcomes have been described, yet the long-term effect of stroke on mortality following CABG surgery has not been well studied.

Methods: We examined the survival of 35,733 consecutive patients undergoing isolated CABG surgery in northern New England from 1992 through 2001.

View Article and Find Full Text PDF