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ASA NEWSLETTER
 
 
August 2001
Volume 65
Number 8
   
Pulmonary Artery Catheter Education Program:
A New Collaborative Educational Tool

(Note: Please contact the authors below for further information on the PACEP Web Site.)

William H. Montgomery, M.D.
C. William Hanson III, M.D.


In a 1996 Journal of the American Medical Association article, Conners et al. reported increased morbidity and mortality when patients had pulmonary artery catheters (PACs) used to guide therapy.1 The accompanying editorial by Dalen called for a discontinuation of the use of PACs until further data could be obtained with regard to their safety and efficacy. 2 Multiple professional societies, including ASA, responded in support of the PAC but also indicated that interested parties should come together to study the PAC and its use. This process was facilitated and promoted by the Food and Drug Administration and the National Institutes of Health.

The initial Pulmonary Artery Catheter Clinical Outcomes (PACCO) conference attendees were of the opinion that the PAC was poorly understood and that users were for the most part uninformed regarding indications for insertion, technique of insertion and management of catheter-derived data. The participants could not find good data to support the use of a PAC in patients with acute respiratory distress syndrome (ARDS), sepsis or in congestive heart failure.

They recommended that clinical trials be conducted to determine PAC efficacy and safety in these disease states.

The conference acknowledged that approximately 50 percent of PACs were placed by anesthesiologists and that there were articles regarding the pros and cons of PAC use in cardiac and noncardiac surgical cases. The PAC was introduced in 1970, and at the time of the initial PACCO conference, industry representatives estimated that 2 million catheters were sold around the world at an annual cost of approximately $2 billion in the United States alone. The landmark PAC guidelines published in 1993 by ASA was cited.3 Other societies subsequently published similar guidelines regarding the appropriateness of utilization and competency requirements for the PAC.

The ASA House of Delegates charged the Committee on Critical Care Medicine and Trauma Medicine in 1997 with actively participating in the evolving activities surrounding the PACCO process. Representatives of professional societies, government and industry have all been part of this ongoing PACCO project. The PACCO conference attendees adopted as a goal the development of a program for “transfer of basic hemodynamic monitoring knowledge.”

The Pulmonary Artery Catheter Education Project (PACEP) thus evolved; it has been developed and designed to provide a state-of-the-art Web-based educational tool on how to use and interpret information obtained from the PAC in the clinical environment and measure learning outcomes. Topic content has been divided into modules to facilitate participant progression from novice to expert as well as to provide the ability to include information on any new technologies that in the future could be added as devices or therapies are introduced into practice and as results of studies become available.

Primary Purpose of PACEP

It was a consensus of the participating societies that a permanent structure was necessary to continue to do the work of PACCO and to complete the PACEP. A Board of Directors is being created, and any professional society that wants to become more involved is encouraged to join. The goal is to be one of inclusiveness, with some basic criteria for membership.

The overall goal of PACEP is to provide efficient transformation of useful hemodynamic information with Web-based technology to allow clinicians to practice in a safe and competent fashion. Participating organizations include the following: ASA; the American College of Chest Physicians; the Society of Critical Care Medicine; the American Association of Critical Care Nurses; the American Association of Nurse Anesthetists; the American Thoracic Society; and the National Heart, Lung and Blood Institute. For the purpose of simplicity, all participating organizations with PACEP will be referred to as the “PACEP Collaborative.”

This educational resource is intended for physicians-in-training, physicians practicing critical care medicine and anesthesiology, critical care nurses, nurse anesthetists and others who routinely care for patients requiring advanced hemodynamic monitoring of fluid levels and cardiac function. The benefits of using Web-based technology include the following:

• Users can access the information at their leisure.
• Users can proceed to each lesson at their own pace and repeat lessons as necessary.
• Information can be updated more economically, and information can be provided that is considered the most current to medical practice.
• Users can evaluate their own level of understanding with the use of pretests, post-tests and case studies.
• A collective database can determine how effective the use of Web-based technology is in educating those targeted for using the information.

PACEP Collaborative Structure

The PACEP Collaborative consists of a Board of Directors that has representation from each society participating with PACEP. This group is intended to help in facilitating the development of the project and in monitoring its implementation. All educational content related to the PACEP project will be copyrighted solely by the PACEP Collaborative and not be owned by one specific organization or society. In addition, this copyright will be applicable to any new formats or platforms that are decided upon by the PACEP Collaborative as determined by educational need and available financial resources. All decisions will be made by a majority consensus of the PACEP Collaborative.

In return for a society’s participation, recognition of its participation will be included on the PACEP Web site, and participating societies will receive all information collected from the PACEP that users have provided as they access and participate on the PACEP Web site. There will be a two-way hyperlink from the ASA Web site to the PACEP Web site and from the PACEP Web site to the ASA Web site.

Development of the PACEP and Timeline

Module I is currently under development with an implementation date on the PACEP Web site of July 2001. Module I has been designed with a pretest, followed by a PowerPoint™ presentation that is moderated by an expert in the field, and then a post-test. Certain lessons within the module have three to five mini-case studies that are utilized in preparing the user for the more complicated case studies presented in Modules II and III. The development of Level I and II educational content in Module I has been subdivided for the beginner versus the more advanced practitioner.

Module I: Level I — Fundamental Hemodynamic Information
• Lesson A: Physiologic concepts of hemodynamic monitoring (Part I of II)
• Lesson B: Interpretation of hemodynamic information (Part I of II)
• Lesson C: Therapeutic interventions (Part I of II)
• Lesson D: Hemodynamic waveform analysis and interpretation (Part I of II)
• Lesson E: Technical aspects of hemodynamic monitoring (Part I of II)
• Lesson F: Complications of hemodynamic monitoring
• Lesson G: Assembly of pressure monitoring system

Module I: Level II — Advanced Hemodynamic Information
• Lesson A: Physiologic concepts of hemodynamic monitoring (Part II of II)
• Lesson B: Interpretation of hemodynamic information (Part II of II)
• Lesson C: Therapeutic interventions (Part II of II)
• Lesson D: Hemodynamic waveform analysis and interpretation (Part II of II)
• Lesson E: Technical aspects of hemodynamic monitoring (Part II of II)
• Lesson F: Insertion of the PAC

Module II — Currently under development with an implementation date on the PACEP Web site of October 2001. The format includes a pretest, followed by a PowerPoint presentation that is moderated by an expert in the field, and then a post-test. Certain lessons in Module II also have three to five mini-case studies.

Module III — “Case Studies for Interpretation of the PAC Usage.” Module III will include all case-based questions that build upon the content learned from Modules I and II. It is scheduled for implementation on the PACEP Web site in February 2002.

Module IV — “Interactive Pulmonary Artery Waveform Troubleshooting Program.” This program is scheduled for implementation on the PACEP Web site in July 2002.
• Lesson A: Right arterial waveforms
• Lesson B: Pulmonary arterial waveforms
• Lesson C: Pulmonary capillary wedge waveforms
• Lesson D: Tutorials

Module V — “Other Forms of Hemodynamic/Technology.” This module is reserved to educate and/or test knowledge of new therapies or new technologies that could be additive to PACEP. Some technological advances could be items such as the HemoSonic™ 100 echo-doppler probe for determining key hemodynamic parameters, the PiCCO continuous pulse contour cardiac output device as well as many others. An actual implementation date for this module has not yet been determined.

CME and Other Continuing Education Units

Continuing medical education (CME) credit will be offered on a lesson-by-lesson basis for each module. Other continuing educational units for critical care nurses and nurse anesthetists will be offered through AACN and AANA, respectfully.

The permanent PACEP structure represents an opportunity to participate with other professional societies in the development of a strong educational product for the practice of perioperative medicine. ASA members have been involved from the beginning with this educational product. PACEP represents an opportunity for our specialty to be involved with and influence other societies as this and potentially other educational instruments and methodologies evolve.


References:
1. Connors AF Jr, Speroff T, Dawson NV, et al. The effectiveness of right heart catheterization in the initial care of critically ill patients. JAMA. 1996; 276:889-897.
2. Dalen JE, Bone RC. Is it time to pull the pulmonary artery catheter? JAMA. 1996; 276:916-918.
3. Practice Guidelines for Pulmonary Artery Catheterization. Anesthesiology. 1993; 78:380-394.



William H. Montgomery, M.D., is Assistant Professor of Anesthesiology, University of Hawaii School of Medicine, Straub Clinic and Hospital, Honolulu, Hawaii.

C. William Hanson III, M.D., is Professor of Anesthesia, Surgery and Internal Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania.


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