KEYWORDS temperature monitoring heat loss mechanisms warming devices types of warming devices efficacy of warming devices complications of warming devices blood warmers   Perioperative patient temperature changes are a “hot”…

KEYWORDS pressure transducers: resonance damping noninvasive blood pressure measurement oscillometry   The frequent measurement of a patient’s arterial blood pressure (BP) is standard care in anesthesia. The guidelines state that…

KEYWORDS medical gas cylinders alarm and safety features: anesthesia machine proportioning devices pressure fail-safe   A “fail-safe” is a system or device that limits damage or harm. For instance, on…

KEYWORDS instrumentation gas concentrations infrared absorption mass spectrometry Raman scatter analysis monitoring methods gas concentrations oxygen nitrogen carbon dioxide anesthetic gases and vapors   How comfortable would you be not…

KEYWORDS flowmeters rotameter laminar-turbulent flow rotameter configuration   Similar to vaporizers, flowmeters are one of our interfaces with the anesthesia machine. Here is something that we can actually see in…

KEYWORDS alarms and safety features operating rooms electrical grounding isolation transformers basic electronics macro and micro current hazards   As we all know, electrical equipment is a big part of…

KEYWORDS waste gas evacuation systems trace concentrations operating room pollution personnel hazards   Let’s say you are performing an anesthetic. You have the fresh gas flow (FGF) at 2 L/min….

KEYWORDS design and ergonomics of anesthesia machines anesthesia machine safety features ventilators oxygen ASA monitoring standards   In the recent past, it was easier to perform a preanesthetic checkout on…

KEYWORDS malignant hyperthermia nontriggering anesthetics filters design and ergonomics of anesthesia machines   Malignant hyperthermia (MH) is “the disease of anesthesia.” We are the only specialty that until recently needed…