Clinical Foundations
Webinar Series


Waste Anesthesia Gases in the Healthcare Environment: Risks and Prevention Strategies

James D. McGlothlin,

Our Mission

As our aging population grows, so does the prevalence of respiratory-related ailments. To meet this medical need, a variety of new respiratory diagnostic and treatment options are being developed. With the availability of these new options, respiratory care professionals will require the most up-to-date, scientifically- and clinically-based information to help them make informed decisions on what is best for their patients.


Clinical Foundations provides practical, clinically- and evidenced-based articles, case studies and symposia for respiratory therapists and respiratory care directors, managers, and supervisors. Clinical Foundations is based on a patient-focused model of care that emphasizes the need to provide the care and services that focus on patients’ individual needs and preferences.


As part of our commitment to helping respiratory care professionals improve their skills, each edition of Clinical Foundations is fully accredited by the AARC for CRCEs.


This program is sponsored by Teleflex

Advisory Board

Richard Branson, MS, RRT, FAARC

Professor of Surgery

University of Cincinnati College of Medicine

Cincinnati, OH


Kathleen Deakins, MS, RRT, NPS

Supervisor, Pediatric Respiratory Care

Rainbow Babies & Children’s Hospital of University Hospitals

Cleveland, OH


William Galvin, MSEd, RRT, CPFT, AE-C, FAARC

Program Director, Respiratory Care Program

Gwynedd Mercy College,

Gwynedd Valley, PA.


Carl Haas, MS, RRT, FAARC

Educational & Research Coordinator

University Hospitals and Health Centers

Ann Arbor, MI


Richard Kallet, MSc, RRT, FAARC

Clinical Projects Manager

University of California Cardiovascular Research Institute San Francisco, CA


Neil MacIntyre, MD, FAARC

Medical Director of Respiratory Services

Duke University Medical Center

Durham, NC


Tim Myers, BS, RRT-NPS

Pediatric Respiratory Care

Rainbow Babies and Children’s Hospital

Cleveland, OH


Tim Op’t Holt, EdD, RRT, AE-C, FAARC

Professor, Department of Respiratory Care and Cardiopulmonary Sciences University of Southern Alabama

Mobile, AL


Helen Sorenson, MA, RRT, FAARC

Assistant Professor, Dept. of

Respiratory Care

University of Texas Health Sciences Center

San Antonio, TX


Clinical Foundations is published quarterly by Saxe Healthcare Communications.


Please direct your correspondence to:

Saxe Healthcare Communications

P.O. Box 1282

Burlington, VT 05402

Fax: (802) 872-7558

Humidification During Invasive and Noninvasive Ventilation

By Ruben Restrepo, MD, RRT, FAARC and Brian Walsh, RRT-NPS, ACCS, FAARC

Humidification of inspired gases is a standard of care for patients receiving mechanical ventilation. However, several challenges exist regarding optimal delivery of humidification in the ventilated patient that include the type of humidification device used and issues external to the humidifier’s function. There are two broad categories of humidification used with mechanical ventilation; passive (unheated) and active (heated). Under normal conditions, most commonly available heated humidifiers (HH) follow the recommendations made by the AARC clinical practice guidelines. Ambient temperature, gas temperature (prior to the humidifier), the heater humidifier, the ventilator type, and the ventilator settings may adversely affect adequate warming and humidification of inspired gases. Continuous placement and removal of aerosol generators during mechanical ventilation and the effects that humidification and heat have on aerosol delivery are important considerations in the ICU setting. This review focuses on a number of frequently encountered situations that affect humidification in the clinical setting during the administration of invasive and noninvasive ventilation (NIV).


Panel Discussion: Humidification During Invasive and Noninvasive Ventilation

Moderator: Ruben Restrepo, MD, RRT, FAARC

Panelists: Robert Joyner, PhD, RRT, FAARC,  Leo Wittnebel, PhD, RRT,

Hui-Ling Lin, MSc, RRT, RN, FAARC

Humidification is an essential component of patient ventilation. In this panel discussion, 3 experts discuss themes related to optimal humidification, including optimal humidity for invasive vs noninvasive humidification, means to detect whether humidification is working, where to place the aerosol generator to minimize the effect on aerosol deposition, where within the circuit to monitor temperature, whether it is advantageous to have a humidifier that allows adjustments to absolute and relative humitidy, and other topics.