Beers List
Beers List - Related Videos
02:53
Beer's Law - Concepts
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2020
Absorbance and Fluorescence When light hits a substance, it is either absorbed, transmitted, or reflected. Typically, a substance interacts with a range of wavelengths of light, each one interacting with the molecules or atoms differently. A substance may absorb a specific range of wavelengths, reflect another range of wavelengths, and transmit the other wavelengths of light. When a molecule absorbs light, the energy is used in four different ways: (1) translation, which causes the molecule to...
17:02
Beer's Law - Student Protocol
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Lab Setup for Beer’s LawExpand In this lab, you will combine aqueous solutions of FeCl3 and NaSCN to form an orange-red [Fe(NCS)]2+ complex. When FeCl3 is dissolved in water, the iron center is surrounded by six water molecules. This acidic complex easily loses protons from its water molecules, which can lead to iron hydroxides precipitating from solution. To prevent this, your solutions will include enough HNO3 to keep the iron in...
06:35
Beer's Law - Instructor Prep
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Preparation of SolutionsExpand Here, we show the laboratory preparation for 10 students working in pairs, with some excess. Please adjust quantities as needed. To set up for this lab experiment, wear the appropriate personal protective equipment, including a lab coat, chemical splash goggles, and gloves. Note: You will be working with nitric acid, which is toxic and corrosive, so use caution when handling it. Let's start by...
01:20
Direct Listing of Corporations
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2026
Direct listing is an alternative method for corporations to enter public markets by selling shares directly on a stock exchange. Unlike an initial public offering (IPO), direct listing does not involve issuing new shares or underwriters, reducing costs and allowing a market-driven price discovery process. This method suits companies with established brand recognition and strong financial stability.Benefits of Direct ListingDirect listing provides a cost-effective means for companies to go...
01:09
UV–Vis Spectroscopy: Beer–Lambert Law
0 Views •
2024
The Beer-Lambert law describes the relationship between absorbance and concentration, which combines the principles established by scientists Johann Heinrich Lambert and August Beer. Lambert's law states that when light passes through a medium, the loss in intensity is directly proportional to the original intensity and the path length of the light. Beer's law proposed that the transmittance of a solution remains constant if the product of concentration and path length is constant. The modern...
FAQs
It organizes prescribing concerns around several risk pathways, including adverse drug events, drug-disease interactions, drug-drug interactions, and medications that may require dose adjustment when kidney function is reduced. This structure helps clinicians examine not only the medication itself but also how it fits the patient’s diagnoses, other treatments, and physiological status.
Reduced kidney function can make dose adjustment an important part of medication review. The Beers List highlights this concern so clinicians can consider whether a treatment may pose greater risk at a particular level of kidney function. The finding prompts individualized assessment rather than an automatic decision to discontinue the medication.
A listing signals potential risk, not an absolute prohibition. Clinicians weigh the concern against the patient’s diagnoses, treatment goals, life expectancy, and medication history. This approach allows a medicine to remain appropriate in some circumstances while encouraging closer review, risk reduction, or consideration of an alternative when the expected harms outweigh its benefits.
A drug-disease interaction concerns the relationship between a medication and a patient’s existing diagnosis, whereas a drug-drug interaction concerns the combined effects of medications used together. Separating these risks helps clinicians review treatment from two directions: whether one medicine may worsen a condition and whether the medication regimen may create added harm through combinations.
Clinicians can compare the patient’s medication history with the list, identify relevant risk categories, and then consider diagnoses, treatment goals, life expectancy, and kidney-related dose needs. The review may lead to continued monitoring, dose adjustment, deprescribing, or another prescribing decision. The list supports this process but does not replace clinical judgment.
It is useful during medication review and safer-prescribing decisions for adults aged 65 and older, particularly when clinicians are evaluating preventable medication-related harm. Its findings can support deprescribing and shared decision-making by giving clinicians and patients a structured basis for discussing risks, treatment priorities, and whether a medication’s expected value justifies its potential concerns.