Author

Gregory J. Dyer

Gregory J. Dyer, DNP, AGACNP-BC, manages postoperative cardiac surgical patients in an intensive care unit in Berkeley, California. He worked as an intensive care respiratory therapist before completing his BSN at Eastern Kentucky University and his doctoral training at Western Kentucky University. In addition to teaching physiology to allied health students, Dyer contributes to Biology Insights.

CLO Test: What It Is and Why It Matters
Should Bronchophony Be Positive or Negative?
What Is the P/F Ratio and How Is It Calculated?
How to Calculate RSBI: Formula, Steps, and Thresholds
What Does Whispered Pectoriloquy Indicate?
How to Properly Auscultate the Abdomen
How to Read and Interpret Arterial Blood Gases (ABGs)
How Are Effective Oxygenation and Ventilation Assessed?
How to Calculate P/F Ratio and What It Means
What Is a Normal PetCO2 Range and What Do Readings Mean?
What Is a Normal PetCO2 Level and Why Does It Matter?
What Is a Normal A-a Gradient and Why Does It Matter?
What Does CPR Look Like on an ECG?
How to Test Egophony and Interpret the Results
What Is the Difference Between PaO2 and SaO2?
What Is SvO2 and What Do Its Values Indicate?
What Are Ventilator Waveforms and What Do They Show?
What is tcpco2 Monitoring and How Does It Work?
PaO2 to SpO2: Practical Insights and Clinical Application