Overview of Ventricular Assist Devices and the Total Artificial Heart.

BACKGROUND: Patients with isolated left ventricular failure may have positive outcomes after being implanted with a left ventricular assist device. Unfortunately, almost half of patients with heart failure and reduced ejection fraction also have evidence of right ventricular dysfunction. For a subset of this population with severe biventricular failure, or those who develop right ventricular dysfunction after left ventricular assist device implantation, patients may necessitate biventricular assist devices or the total artificial heart. OBJECTIVES: This overview of mechanical circulatory support devices will enhance nurses' ability to differentiate criteria for implantation, current practice, and outcomes with a focus on durable ventricular assist devices and the total artificial heart. METHODS: A review of the literature involved searching CINAHL and PubMed databases using keywords biventricular assist devices, total artificial heart, and durable mechanical circulatory support. Results were narrowed to articles based on adults, 18 years or older. Seventy-eight relevant articles were identified, and 8 articles compared the durable biventricular assist devices. RESULTS: Similar patient outcomes were found when comparing the use of left ventricular assist devices as biventricular support versus the total artificial heart. DISCUSSION: The decision to implant the appropriate durable mechanical circulatory support for a patient in biventricular failure is complex and dependent on patient factors.

A Review of Central Venous Access Using Ultrasound Guidance Technology.

More than 5 million central lines are placed in the United States each year. Advanced practice providers place central lines and must understand the importance of ultrasound guidance technology. The use of anatomic landmarks to place central lines has been employed in the past and in some instances is still used. This method may make accessing the target vessel difficult in the patient with anomalous anatomy or in the obese patient. These characteristics decrease successful placement and increase complications. Different organizations have agreed that the use of ultrasound during central venous access has decreased rates of complication and cost. In addition to cannulating and accessing a central vein, ultrasound can be used to rapidly confirm placement and to rule out complications such as pneumothorax. Utilizing ultrasound to assist in performance of procedures, and in assessment of patients, is a skill that should be optimized by nurse practitioners.

Evaluation of a Low-Cost, High-Fidelity Animal Model to Train Graduate Advanced Practice Nursing Students in the Performance of Ultrasound-Guided Central Line Catheter Insertion.

INTRODUCTION: Ultrasound-guided central venous catheter insertion (UGCVC) is a commonly performed procedure taught through simulation. The aims of the study were to examine the utilization of an animal model and compare it with two currently used Blue Phantom central line models to determine whether an animal model provides good or better simulated conditions for the performance of UGCVC insertion. METHODS: Using a randomized cross-over study, 46 advanced practice nursing students were assessed using a task-specific performance tool in their performance of UGCVC insertion on both the animal model and the Blue Phantom models. The number of insertion attempts and time to performance was recorded. A preprocedure survey was used to ascertain their presimulation workshop experience, followed by a postprocedure survey. A cost comparison was completed as a secondary outcome. RESULTS: A comparison was conducted on the performance scores and the postsurvey results between the animal model and the Blue Phantom models. The number of venous access attempts was not significantly different when comparing the three models. A cost comparison showed the total cost of each animal model was US $15.66 as compared with the approximate cost for the Blue Phantom IJ model of US $1500.00 and the Gen I model of US $2700.00. CONCLUSIONS: Current Blue Phantom models lack the ability to fully perform all the necessary steps critical to the performance of UGCVC insertion. At a total cost of US $15.66 per model, this study showed that training with an alternative economical model was comparable with more expensive mannequin simulators. The results of this study may serve to guide clinicians and educators who are seeking alternative simulation models to provide skill acquisition.