The iWorx newsletter is a FREE monthly publication dedicated to sharing teaching laboratory techniques and other useful information with educators in the fields of Anatomy and Physiology. We will also be sending you technical information and info on new developments at iWorx that we feel may be of use to you in your teaching and research activities.

About iWorx
iWorx has everything you need to add excitement and distance learning to any physiology teaching program. Our products include data acquisition hardware, professionally -developed physiology courseware, innovative web tools, and a full selection of transducers, cables, front ends and accessories.

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© 2005 CB Sciences, Inc. Patent pending. iWorx is a trademark of CB Sciences, Inc.

June 2006

  Experiment:  Oxygen Saturation Levels and Ventilation

Pulse oximetry is an easy, non-invasive method to indirectly determine the amount of oxygen in a person's blood. The most common type of pulse oximeter measures the oxygen saturation (SpO2) of blood using a sensor clipped over a fingertip or on an earlobe. The sensor functions by emitting two wavelengths of light and detecting the absorbance of each wavelength by the oxygenated and deoxygenated forms of hemoglobin.  The programming in the unit then determines the ratio of the two forms of hemoglobin, and expresses the level of oxygen saturation in the blood as a percentage.

In this experiment, students will perform exercises that demonstrate how air exchange in the lungs, also known as ventilation, affects the oxygen saturation of the subject’s blood. Students will record oxygen saturation levels in the blood of the subject during normal breathing, apnea, hyperventilation, the Valsalva maneuver, and chest expansion. At the same time the oxygen saturation level is recorded, the subject’s heart rate and breathing will be monitored as a demonstration of the integration of the cardiovascular and pulmonary systems.

Download high resolution  press optimized or low resolution screen optimized Oxygen Saturation Levels and Ventilation Experiment (PDF file).

Tech Note:  The PO2-100D Pulse Oximeter

The PO2-100D pulse oximeter is a simple device that can, easily and non-invasively, measure the oxygen saturation levels of blood through a sensor that clips over the end of the subject’s finger or toe. The sensor functions by emitting two wavelengths of light, detecting the absorbance of each wavelength by the oxygenated and deoxygenated forms of hemoglobin, using the programming in the unit to determine the ratio of the two forms of hemoglobin, and expressing the level of oxygen saturation in the blood as a percentage.

To learn more about the PO2-100D pulse oximeter, download this tech note.

PO2-100D Pulse Oximeter

iWorx is offering a 30% discount on the PO2-100D Pulse Oximeter and is available for just $795 (list price $995) until December 31, 2006.  Customers in the U.S. and Canada can order directly online.

PO2-100D

Pulse Oximeter and Plethysmography Sensor

$995

$795

  Users Area: Log-in or Register for Access to LabScribe
  Installers, Lab Manuals, and Settings Files.

Whether you plan to download any of the experiments announced in recent editions of the iWorx Newsletter or a new copy of the LabScribe Installation CD, you need a password and an ID to access the download sites for these items. 

To register for a new ID and password, please go here.   After you receive confirmation that user account has been activated, return to the same site and click on the Enter link. 

Registered users can log-in here.

To download screen or press optimized copies of the latest lab experiments and Tech Notes published in the iWorx Newsletters, go here and select the lab experiment of interest.

If you plan to use any of the experiments or manuals announced in recent editions of the iWorx Newsletter, you should obtain a copy of the settings group used to configure LabScribe for these experiments.  To download the settings file, right click here and choose "Save Target As" in the Internet Explorer browser or "Save Link As" in the Firefox browser.  Save the file in your LabScribe Folder.  When you launch LabScribe, the settings group will be available from Load Group command in the Settings menu.

Web Resources

Learn more about gases, pulse oximetry, and hemoglobin by going to our external Web resources page.

On this page we have also accumulated a host of links to informative, external physiology Web sites and conveniently categorized them into major sub categories for easy reference.

We are pleased to announce the launch of our new e-commerce Web site for data acquisition and analysis solutions for the life sciences.  Please visit us at www.iworx.com.  Customers in the U.S. and Canada can now purchase many of our physiology teaching products and replacement components directly online.  See all special offers currently running.

Clearance Items

iWorx has a large supply of new and trade-in items at up to 70% discount.  Also check with us about trade in allowances for your older Powerlab or Biopac equipment.  Customers in the U.S. and Canada can order directly online. See specials