what is the difference between a threshold dose-response curve and a non-threshold dose-response curve

Answers

Answer 1
Threshold response curve is a point at which a biologic response occurs, so this implies that there is a "safe" amount of dose to be delivered. It starts at a point greater than "0" on the graph.

Non-threshold response curve is described as any radiation exposure can be harmful and cause a response in the body. It implies that there is no safe level of exposure. It starts at "0" on the graph.

Related Questions

why might a person with sickle cell anemia have difficulty breathing

Answers

Sickle red blood cells can block the blood vessels in the lungs. This reduces oxygen flow to the lungs and can make it hard to breathe. This condition is an emergency and may be life-threatening.

A physician orders a dosage of 1500mcg. the solution available is 0.5mg per ml. how many ml should the pharmacy technician give the patient?

Answers

Taking into account the rule of three, the volume that the pharmacy technician should give the patient is 3 mL.

What is rule of three

In first place, the rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.  

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied.

To solve a direct rule of three, the following formula must be followed, being a, b and c known data and x the variable to be calculated:

a ⇒ b

c ⇒ x

So: [tex]x=\frac{cxb}{a}[/tex]

Volume that the pharmacy technician should give the patient

A physician orders a dosage of 1500mcg= 1.5 mg (being 1 mcg= 0.001 mg). The solution available is 0.5mg per ml.

So, the volume that the pharmacy technician should give the patient is calculated as:

0.5 mg ⇒ 1 mL

1.5 mg ⇒ volume

So: [tex]volume=\frac{1.5 mgx1 mL}{0.5 mg}[/tex]

volume= 3 mL

Finally, the volume that the pharmacy technician should give the patient is 3 mL.

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Chose what vitamin is necessary for good vision vitamin

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Answer:

Vitamin A. Vitamin A plays a crucial role in vision by maintaining a clear cornea, which is the outside covering of your eye. This vitamin is also a component of rhodopsin, a protein in your eyes that allows you to see in low light conditions ( 1 ).

Explanation:

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Joan Seap lives at home, has COPD and ASHD, and is functionally declining. Dr. Smith has revised her comprehensive care plan. Thirty minutes was spent this month completing these services. The code to report is

Answers

Answer:

99490

Explanation:

A primary comparative distinction between skilled-nursing and assisted-living facilities is that skilled nursing facilities:

Answers

Answer:

Difference between skilled nursing and assisted living

Overall, the main difference between nursing home care and assisted living is that nursing homes provide medical and personal care in a clinical setting, while assisted living primarily provides personal care in a home-like, social setting.

The nursing instructor is teaching a class on the nutritional needs of the pregnant client. The instructor determines the session is successful when the students correctly choose which supplement as being known to prevent up to 70% of CNS birth defects

Answers

Folic acid is the supplement which is known as being able to prevent up to 70% of CNS birth defects.

What is Folic acid?

This is known as Vitamin B9 and is soluble in water. It helps in the production of new healthy erythrocytes in the body.

This prevent CNS birth defects due to it favoring adequate production of healthy cells in a fetus.

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If Mary takes two 325mg tablets of Tylenol every 4 hours for pain, how many milligrams has
Mary taken after three doses?
Select one:
O a. 375mg
O b. 650mg
O c. 1,300mg
O d. 1,950mg

Answers

Answer D: 1,950mg

Explanation: Well, Mary takes two 325mg tablets, so you would mutiply that by two, which would be 650mg at one time. Then you multiply that by 3 and get 1,950mg.

Answer:

ddddd

Explanation:

An adolescent is at risk for injury related to intracranial pathology following a motor vehicle collision. Which nursing action is the priority

Answers

Answer:

maintaining stable intracranial pressure

Increased intracranial pressure contributes to increasingly severe pathology, including potential for brain stem herniation, so maintaining stable intracranial pressure is priority.

Explanation:

find information about The Joint Commission and how it identified its list of abbreviations for its official “Do Not Use” list. Then, create a table with the “do not use” abbreviations, including the rationale for why they are on this list and the recommended alternatives.

Answers

The Joint Commission developed a list that contains information about dangerous abbreviations, symbols and acronyms which should be observed by companies registered by them.

What is found in the “Do Not Use” list?

The contents that can be found in a “Do Not Use” list is as follows:

IU : Mistaken for IV therefore write international unit instead of IU.

U : Mistaken for 0 therefore write units instead of U.

MS : Mistaken for morphine sulfate or magnesium sulfate therefore write out the full meaning of the substance meant.

Q.D., QD, q.d., qd (daily): Mistaken for each other therefore write daily.

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Blank is defined as chest pain caused by ischemia or lack of oxygen

Answers

Answer:

"Angina is chest pain that happens because there isn't enough blood going to part of your heart. It can feel like a heart attack, with pressure or squeezing in your chest. It's sometimes called angina pectoris or ischemic chest pain."

Explanation:

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True or False: Hospices are a relatively recent approach developed to make the end of life as free from pain and anxiety as possible.

Answers

Answer:

False.

Explanation:

The concept of Hospice has been around since the 1950's, so it isn't really a recent occurrence.

Susan knows that there are laws that govern the refilling of diazepam, which is a controlled substance. How do these laws affect Mr. Lehmke?

Answers

Answer:

Schedule 2 pharmaceuticals include diazepam. Because of its addictive nature, this scheduling drug often does not allow refills. Mr. Lehmke may be affected because obtaining medication without a provider's order will be difficult.

Explanation:

Exercising Pearson Physicians Group's medicine refill line is managed by Susan Schultz, CMA (AAMA). Adam Lehmke has asked for a diazepam refill. When she looks over Mr. Lemke's chart, she discovers that Dr. Penningworth wrote a prescription for diazepam three months ago with two refills, and she realizes that Mr. Lemke should still have two weeks of medication left based on the date.

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A client is concerned that a blood pressure reading of 180/78 mm Hg is extremely high when the readings usually are around 130/60 mm Hg. What could have caused this elevation in blood pressure

Answers

Answer:

One of the things that could have happened is that the blood isn't circulating like it's supposed to.

Explanation:

The graduate nurse is caring for a client with decreased renal perfusion. The registered nurse determines that the graduate nurse demonstrates understanding of why this is occurring if which statement is made

Answers

The statement "It may lead to decreased dopaminergic receptor stimulation" is associated with decreased renal perfusion.

What is dopaminergic receptor stimulation?

A dopamine agonist is a medical substance or drug capable of activating dopamine receptors.

Dopaminergic receptor stimulation is a medical approach that use dopaminergic drugs to activate dopamine receptors.

A decreased dopaminergic receptor stimulation is associated with decreased renal perfusion because this process reduces renal blood flow by depressing cardiac output.

In conclusion, the statement "It may lead to decreased dopaminergic receptor stimulation" is associated with decreased renal perfusion.

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A two-month-old is showing signs and symptoms of heart failure. An echocardiogram is ordered. The test shows the infant has a ventricular septal defect (VSD). Which statement below best describes the blood flow in the heart due to this congenital heart defect

Answers

Answer:

A VSD allows oxygen-rich (red) blood to pass abnormally from the left ventricle through the opening in the septum.

Explanation:

The septal wall prevents the mixing of blood between the two ventricles of the heart. A VSD allows oxygen-rich (red) blood to pass abnormally from the left ventricle through the opening in the septum. Then it mixes with oxygen-poor (blue) blood in the right ventricle.

The name of the person whom you would speak to for refill authorization is entered into which of the following fields? a) Name b) Phone c) Contact d) Doctor​

Answers

Answer:

Explanation:

a. Name, phone and contact and self explanatory, it may be d, but that’s doubtful because I’d assume it means the type of doctor Eg; MD, DO, DNM, DHM, etc.

A client develops chronic pancreatitis. What would be the appropriate home diet for a client with chronic pancreatitis

Answers

A low fat, bland diet distributed over five to six small meals daily

How long does a lone star tick need to be attached to transmit disease.

Answers

Answer:

around a day or 3 it does not take long

A female client who reports recurring headaches, accompanied by increased irritability, photophobia, and fatigue is asked to track the headache symptoms and occurrence on a calendar log. Which is the best nursing rationale for this action

Answers

The rationale behind this action are to track the occurrence of the headache and to give a proper diagnosis on the type of headache the female patient has.

What is headache calendar log?

The headache calendar log is a type of calendar that is used to monitor the duration, severity and episodes of your headaches over time which can be used to arrive at it's causes and possible diagnosis.

Therefore, the rationale behind this action are:

to track the occurrence of the headache; and

to give a proper diagnosis on the type of headache the female patient has.

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According to the Dental Board regulations, how long should sterilization monitoring records be stored

Answers

Answer:

one year

Explanation:

If cleaning and sanitizing a food surface during production, which type of hygiene are you demonstrating

Answers

The answer would be oporational.

Answer:

operational

Explanation:

Ordered: 130mg. Available 1gr/tablet. How many tablets should be given?

Answers

1.5 g this ensures the patient gets the right amount of perscription.

Answer:

2

Explanation:

I will assume that 'gr' stands for 'grain'   and mot for 'gram' (sometimes used)

1 grain = 65 mg

130 mg/ 65 mg/tab =  2 tablets

How can you recognize whether an isolated lung is a right or a lenft lung?​

Answers

Answer:

The right lung is always wider and shorter in any circumstance; separated from the liver; has superior, middle, and inferior lobes. The left lung is narrower and longer; has superior and inferior lobes.

You are caring for a child who is in respiratory arrest with a central pulse of 55 bpm and signs of poor perfusion. What should you do?

Answers

Answer:

See Explanation

Explanation:

Considering the fact that this seems like it is happening in real-time, I would preferably treat the child with 2 shots of epi to calm the heart which is most likely at a very high rate. After the heart is calmed, the respiratory system (what specifically failed) is easily treatable in said hospital's respected O/R (Operating Room)

which type of radiation source would pose the greatest health risk when used internally for a medical procedure

Answers

Answer:

Alpha particles

Explanation:

What type of radiation is most harmful? It depends on whether your exposure to radiation is internal or external. Alpha particles are the most harmful internal hazard as compared with gamma rays and beta particles.

a 67 year old man is found unresponsive, not breathing, and without a pulse. you notice the person giivng chest compressions is not allowing for copmlete chest recold. what is your next course of action

Answers

Your next course of action is to have be a constructive intervention.

What is constructive intervention?

Constructive intervention is defined as the intervention given by an experienced medical personnel as a guide to a trainee to help improve their growth in the profession.

If as an experienced medical personnel you notice the person giving chest compressions is not allowing for complete chest recoil, tell the compressor you notice decreased chest recoil which is a constructive intervention.

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Which statement by a client scheduled for bariatric surgery indicates to the nurse that further preoperative teaching is necessary

Answers

Given what we know and the options found online, the statement that shows the need for further teaching is "I'm going to have a figure like a model in about a year".

Why does this statement show the need for further teaching?

This statement shows that the patient in question has an unrealistic outlook on the results of the surgery or is unprepared mentally for the common side effects of these procedures, such as the appearance of excess skin folds on the abdomen and underarms. Being prepared mentally is important and the patient should be informed of these possibilities.

Therefore, we can confirm that the statement that shows the need for further teaching is "I'm going to have a figure like a model in about a year".

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which are major reasons the pediatric population is more sensitive to medications in comparison to adults

Answers

Answer:

The different capacity to metabolize drugs in children 

Explanation:

The different capacity to metabolize drugs in children.

May result in higher or lower drug plasma levels than those reached in adults.

Why children are sensitive to drugs?

It is  because of the level of maturity of body systems involved in:-

Absorption, Metabolism,Transportation,Elimination of drugs.

What are the adverse effects of drugs reaction?Constipation, NauseaVomiting,Fatigue,Alopecia, Drowsiness,Myelo suppression, Skin reactions, Anorexia, MucositisDiarrhoea.

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What advice would you give to the mother of a premature infant regarding physical touch stimulation of her baby

Answers

Answer:

The correct solution to this problem is provided by routine touching and caressing will help facilitate weight gain.

in the case of jesse gelsinger, a young man who died during gene therapy, the therapy involved delivery via a viral vector. was this germ-line or somatic therapy?

Answers

Somatic therapy is the answer
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