MORE PATIENTS NOW CANDIDATES FOR VALVE REPAIR AND REPLACEMENT
Open sternotomy has long been considered the standard of care in cardiac valve surgery, affording the surgeon an unobstructed field in which to operate. Non-sternotomy procedures, however, are gaining in popularity as the advantages become clearer. However, due to the steep learning curve involved in this less invasive approach, a paradigm shift still needs to occur before it becomes as commonplace as open sternotomy is currently. Given the proliferation of hybrid surgical approaches and the increasing usage of non-sternotomy cardiac valve surgeries, Walter Pae, M.D., chief, cardiac surgery, Penn State Hershey Heart and Vascular Institute, hopes that paradigm shift is beginning. “Ultimately, our goal is to eradicate the sternotomy altogether.”
Single-institution experiences, compared to national results in the absence of randomized trials, have demonstrated that both mortality rates and the rate of dysrhythmias, such as supraventricular arrhythmias, are the same with non-sternotomy cardiac procedures and open sternotomy procedures. Length of hospital stay is reduced more than 20 percent, and one study showed 100 percent five-year survival using the non-sternotomy surgery versus 85 percent using the open sternotomy technique.¹ Continue reading
Number of eligible patients not taking oral anticoagulation (OAC). Image courtesy of Gerald Naccarelli, M.D.
As the population ages, increasing numbers of patients are presenting with atrial fibrillation, with the number projected to grow to more than 7.5 million in the U.S. by 2050.1 A strong correlation exists between atrial fibrillation and severe acute ischemic stroke.2 Citing large databases such as the PINNACLE-AF registry,3 Gerald Naccarelli M.D., Bernard Trabin Chair in Cardiology and chief, cardiology, Penn State Hershey Heart and Vascular Institute, says, “We have known since the late 1980s that warfarin was able to reduce the risk of stroke by two-thirds in high-risk patients with atrial fibrillation. However, close to half the patients who should be on anticoagulant therapy, according to guidelines, are not receiving it.” He cites multiple co-morbidities, shifting recommendations, and bleeding risk as possible causes, but emphasizes that maintaining brain function must be a key factor in treatment planning for even the most medically complex patients. Continue reading
Current guidelines recommend a multidisciplinary approach as optimal for treating patients who qualify for transcatheter aortic valve replacement (TAVR).1 In addition to a care team of cardiac surgeons and interventional cardiologists, echocardiographers are involved in every phase of transcatheter valve replacement: from pre-implantation patient screening and selecting an appropriate valve size, to intraprocedural guidance of wire and valve position and post-implantation assessment.1
At Penn State Hershey Heart and Vascular Institute, patients first receive a transthoracic echocardiogram (TTE) to examine the aortic valve and quantify the degree of stenosis. Based on the combination of those results and other factors, high-risk patients who are not surgical candidates (due to multiple comorbidities) are referred for TAVR. “Further preparation involves several additional studies including a transesophageal echocardiogram (TEE) with three-dimensional (3D) imaging of the aortic root. This allows physicians to measure the aortic annulus and determine the appropriate size for the replacement valve,” says Michael Pfeiffer, M.D., Penn State Hershey Heart and Vascular Institute. TEE with 3D imaging also examines other aspects of the heart that may impact the TAVR procedure, such as the morphology of the left ventricular outflow track and aortic root, co-existing mitral valve disease and coronary artery position. Patients also receive multi-detector computed tomography (MDCT) evaluation as part of their pre-procedure assessment. Both imaging techniques are complementary pieces of the complete pre-implantation assessment. Continue reading
The CardioMEMS™ HF System is the first Food and Drug Administration (FDA)-approved heart failure (HF) monitor proven to significantly reduce HF hospital admissions and improve quality of life in NYHA class III patients.1 This implanted, wireless, battery-free device measures key vital signs, including pulmonary artery pressure in HF patients, and transmits this information remotely to the patient’s doctors for proactive management. The device was evaluated in 550 people in the CHAMPION (CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Patients) trial; Penn State Hershey Medical Center participated as an active enrolling center. During 15 months of follow-up, the treatment group had a 39 percent reduction in heart failure-related hospitalization compared with the control group.1
To participate, patients must have been hospitalized for HF in the 12 months prior. “That defines a relatively unstable population,” says John P. Boehmer, M.D., Penn State Hershey Heart and Vascular Institute. Once implanted, the CardioMEMS device requires patients to lie on a special mat every day. The mat includes an antenna that wirelessly connects and transmits data securely to a monitor that records 18 seconds of a pulmonary pressure tracing.
CardioMEMS Heart Failure Sensor. CardioMEMS and St. Jude Medical are trademarks of St. Jude Medical, Inc. or its related companies. Reprinted with permission of St. Jude Medical, ©2015. All rights reserved.
Venous thoracic outlet case with effort thrombosis. The patient has undergone first rib resection. Note area of residual venous stenosis which responded to venoplasty (middle image).
The upper extremity disorder thoracic outlet syndrome (TOS) is frequently misdiagnosed, as it appears in a younger patient population, typically between 20 and 50 years old, and is easily mistaken for a musculoskeletal disorder. Physical therapy (PT) is often the initial treatment for patients without blood clots; two-thirds with the neurogenic form of TOS can be treated with PT alone. However, a recent retrospective study of 538 patients during a 10-year period who underwent first rib resections (FRRs) for treatment of neurogenic, venous, and arterial TOS, showed that 93 to 96 percent experienced improved or fully resolved symptoms.1 Continue reading
Bellerophon Therapeutics Bioabsorbable Cardiac Matrix
A new device, bioabsorbable cardiac matrix (BCM), was just investigated in a randomized, double-blind, placebo-controlled trial to determine its safety and efficacy in preventing ventricular remodeling and congestive heart failure (CHF), when administered to subjects who had successful percutaneous coronary intervention (PCI) with stent placement after ST-elevation myocardial infarction (STEMI). Penn State Hershey Medical Center participated in this multi-center trial named PRESERVATION I.
BCM is an aqueous mixture of sodium alginate and calcium gluconate,1 which self-assembles in the body to form a gel-like “scaffold” for the heart in the presence of severely elevated calcium levels that occur as a result of cell death. This scaffold-like structure is designed to replace the damaged extracellular matrix that degraded during infarction, support the damaged myocardial tissue, decrease wall stress and prevent the heart from dilating.1 According to Ian Gilchrist, M.D., Penn State Hershey Heart and Vascular Institute, “It is thought that the heart dilates in the end-stage of congestive heart failure to compensate for areas of the muscle that are no longer viable; however, this causes the heart muscle to stretch and is the beginning of a downward spiral.” Continue reading
HEART AND VASCULAR INSTITUTE CARDIOLOGISTS USE LATEST TOOLS TO EXPAND PATIENT OPTIONS
Since 1976, when surgeons at Penn State Hershey Medical Center implanted the first Pierce-Donachy left ventricular assist device (LVAD) in the country, the technology has helped thousands of patients with severe heart failure survive until a donor heart is available for transplant. Today, however, Penn State Hershey Heart and Vascular Institute uses LVAD therapy not only as a bridge-to-transplant (BTT), but also as long-term destination therapy (DT). In fact, half of the LVAD placements now performed at Penn State Hershey are for DT usage.
Although heart transplantation remains the gold standard for advanced heart failure, LVAD can provide a viable option for many. Patients must have three main qualifications to be considered for LVAD therapy: 1) must be in advanced heart failure, but contraindicated for a heart transplant, or too sick to wait for a transplant, 2) must have reached the limits of medical therapy, and 3) must have a life expectancy of more than two years. Continue reading