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What are the advantages of fiber optic laryngoscopes over those with standard illumination?

There are two advantages; performance and safety. Fiber optic laryngoscopes provide a brighter, whiter light permitting better view and observation during intubation. Because the light source is contained in the battery handle, they are cooler, reducing the risk of patient injury.

The thermometer sheath tears when I insert the thermometer and peel away the protective top covers. What am I doing wrong?

It is important to fully insert the thermometer into the sheath such that the thermometer’s probe TIP is within roughly 1mm of the sheath end. If too large a gap is left the sheath will fold over the tip which may result in puncture. Make sure the top cover is removed first, then the bottom cover. On flexible tip thermometers it is helpful to hold the thermometer a bit closer to the probe end to minimize flex when peeling off the top and bottom paper covers. Click on the attached link to view a video demonstrating the proper technique.

Why do temperatures vary between oral, rectal, or axillary measurement sites?

Core body temperature most closely approximates the temperature obtained through rectal measurement. Oral temperatures will generally run 1 degree lower than rectal temperatures. Axillary (under the arm) temperatures will generally run 1 degree below oral (2 below rectal). Remember, 98.6 is an average of the patient population. Your average body temperature might vary by up to 2 degrees from that.  And while not as volatile as blood pressure, your temperature will vary throughout the day.

Which is more accurate - a manual home blood pressure monitor, digital monitor with arm cuff, or wrist monitor?

Tough question! When measured by a trained professional, following AHA recommendations for blood pressure measurement, a manual instrument will produce very accurate results. Today, home digital BP monitors are VERY accurate, but they do have limitations. Because the algorithms used to calculate blood pressure are based on a limited number of clinical observations, there are people for whom digital units simply will not work.

How do I know if my digital sphyg is accurate?

ADC digital sphygs have a pressure sensor self test that is activated each time you power on the instrument. If the microprocessor detects anything wrong with either the pressure sensor or the chip that analyzes the readings, an error message will be displayed BEFORE measurement. If the unit beeps and displays 0, you can be confident in the instrument's accuracy.

Why do the readings on my digital BP monitor vary?

A variety of reasons. First of all, blood pressure itself is a dynamic rather than static vital sign. Both systolic and diastolic pressures can vary from 10mmHg to 20mmHg or more throughout the course of the day. In some people, a lot more than that. BP is generally lower in the morning and increases throughout the day. Eating, drinking, smoking, exercise and even talking all influence blood pressure. Instrument repeatability will also result in measurement variance.

What do I do in the event of a mercury spill?

Although unlikely to occur with an ADC DIAGNOSTIX mercury sphyg, it can happen. ADC mercury sphygs hold just 2 oz of 99.9999% pure elemental mercury and can easily be contained with a mercury spill kit available through ADC or most laboratory and safety supply dealers. A mercury spill kit should be kept on the premises WHEREVER mercury instruments are used. Never use vacuums which may disperse mercury vapor. Always wear gloves and dispose of contained mercury in accordance with local regulations.

Why does the tubing and bulb on my blood pressure instrument sometimes turn white?

This condition will generally only occur on older latex style blood pressure devices. The phenomenon, known as frosting, is a chemical reaction caused by the exposure of latex to the ozone. Fluorescent lighting can exacerbate the problem. When properly cured during the manufacturing process latex should not frost. However, it can be difficult to determine optimal curing times which are dependent on ambient temperature, humidity, and the water content of the liquid latex.

Why do the readings on my mercury blood pressure instrument sometimes read very high?

Although properly designed mercurial instruments are required to provide a full pressure drop (300 mmHg to 20 mmHg with no back pressure) in 3 seconds, older instruments tend to slow down due to build up of dust or other obstructions within the system. This slow down will produce a lag - the air will release from the cuff FASTER than the mercury can drop in the column. In addition, some manufacturers whose cartridge tubes have a narrow inside bore (generally less than the mandated 3.9 mm dimension) will always suffer from some lag.

How can I test the accuracy of my aneroid manometer?

The only way to be 100% sure is to connect the manometer in series to an instrument of known accuracy and test during deflation at a variety of pressures (i.e. 300, 260, 180, 120, 60, etc.) When testing your sphygmomanometer, it is important that you check the accuracy in accordance with national or international standards that may be applicable to your device.

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