Are CT Scans Safe

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See Shoe Fitting Fluoroscope
@slowmotion must be older than he's letting on!

Howzabout radioactive underpants?

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Or.....

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ColinJ

Puzzle game procrastinator!
The problem is how much you tell the patient

If you tell the patient "I am about to give you an injection that may kill you" then there is obviously going to be a lot of concern, anxiety and probably a cancellation

However if you have checked the patient's risks (iodine allergy, use of metformin, asthma) and associated indicators, and reduced these, then the chances of a reaction are very low.
Given that I had not seen a doctor for over 25 years when I got ill, that nobody asked me about allergies or other illnesses, and the amazing lack of a working nationwide NHS computer system, I feel pretty sure that my CT scan was done without checking whether the dye might cause problems.

When I asked the radiographer about it, she said that it would be obvious very quickly if the dye did not agree with me ...! :eek:
 
Something else (off topic but relevant to the present WW1 anniversary)

A little known fact is that Madame Marie Curie was unable to work during WW1, but was not idle

She recognised that a lack of X-Ray facilities were compromising the health of soldiers at the Front

She actually badgered wealth French individuals to give uo their cars, converted them to vans and into mobile x-ray units, known as "Petit Curies"

She then learned to drive, taught herself anatomy and physiology, and how to operate the machines.

She then drove these vehicles to the Front Line and operated the equipment personally

Second from right in this image

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Driving to the Front:

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classic33

Leg End Member
Given that I had not seen a doctor for over 25 years when I got ill, that nobody asked me about allergies or other illnesses, and the amazing lack of a working nationwide NHS computer system, I feel pretty sure that my CT scan was done without checking whether the dye might cause problems.

When I asked the radiographer about it, she said that it would be obvious very quickly if the dye did not agree with me ...! :eek:
If the same one is still used, you'll end up on the floor if standing.
No reaction to newer ones.

One lasting memory was having X-rays done that required a barium meal/drink beforehand. I was left the two litre jug & a cup with the instruction to drink as much as possible.
Knew that if I drank the one cup, I'd drink no more. Previous experience. Took hold of the two litre jug and drank the contents. Joined a few minutes later by a few more an a radiographer, with some more cups and a puzzled look on her face when she saw the empty jug.
Two or three cups would have sufficed!
 
If the same one is still used, you'll end up on the floor if standing.
No reaction to newer ones.

One lasting memory was having X-rays done that required a barium meal/drink beforehand. I was left the two litre jug & a cup with the instruction to drink as much as possible.
Knew that if I drank the one cup, I'd drink no more. Previous experience. Took hold of the two litre jug and drank the contents. Joined a few minutes later by a few more an a radiographer, with some more cups and a puzzled look on her face when she saw the empty jug.
Two or three cups would have sufficed!

The new ones do have reactions as the basic problem is the iodine content

They have a different form and a lower concentration, which has reduced, but not removed the chance of a reaction

Edited:
Found what I was after... Typically the reaction rate was 6-8% in the old days, but the low osmolarity, non-ionic compounds used now this is 0.2 % of patients

Of those who do react the majority are minor with only 0.06% being moderate and severe
 
Last edited:

classic33

Leg End Member
The new ones do have reactions as the basic problem is the iodine content

They have a different form and a lower concentration, which has reduced, but not removed the chance of a reaction
I'm told I went white, before just dropping to the floor.
Next time I mark that form yes.
 

classic33

Leg End Member
The new ones do have reactions as the basic problem is the iodine content

They have a different form and a lower concentration, which has reduced, but not removed the chance of a reaction
I'm told I went white, before just dropping to the floor.
Next time I mark that form yes.
 
I'm told I went white, before just dropping to the floor.
Next time I mark that form yes.


Should not need to as it will now be marked on the imaging department's computer (and in many cases the main computer) as an alert if you have had a reaction.

However it is always advisable to tell the Radiographer that you have had a reaction to contrast media, we would rather be told and not need to know than deal with a reaction

There is just so much paperwork to fill in!
 

ColinJ

Puzzle game procrastinator!
Has there been any progress with that national NHS computer system?

When I had my second PE last year the hospital that I ended up at in Northampton could not access my records in Halifax. It shocked me that I had to tell the consultant my history because he could not just look it up!
 

fossyant

Ride It Like You Stole It!
Location
South Manchester
No, Manchester can't access Stockport, so despite me seeing a specialist in Manchester, he can't see my records and treatment I have at Stockport.
 
Has there been any progress with that national NHS computer system?

When I had my second PE last year the hospital that I ended up at in Northampton could not access my records in Halifax. It shocked me that I had to tell the consultant my history because he could not just look it up!

There is the new national patient record scheme, - The Summary Care Record is in progress

However many (including me ) have opted out over concerns on privacy and the sharing of data outside the NHS in research, insurance and use of demographic data
 

swansonj

Guru
The problem is how much you tell the patient

If you tell the patient "I am about to give you an injection that may kill you" then there is obviously going to be a lot of concern, anxiety and probably a cancellation

However if you have checked the patient's risks (iodine allergy, use of metformin, asthma) and associated indicators, and reduced these, then the chances of a reaction are very low.

In this case the benefit of telling the patient is far outweighed by the worry and concern you will cause



The other point is that diagnostic imaging has two possible outcomes, to confirm or disprove a diagnosis. Quite often the clinical presentation of an illness has several possible diagnoses.

Although a CT scan not finding anything seems to be an unnecessary radiation dose, the fact that you have excluded a particular illness enables the proper diagnosis and hence still justifies the dose to the patient
I do not dispute that a patient's concern at possibility of side effects may outweigh the benefit the procedure will bring to them.

But please be very wary of going down the line of assuming that patients will treat information irrationally so you will withhold the information; that you can make better judgements on their behalf than the patient can for themselves, so it's better to make the decision for them. Not only is that ethically dubious ("informed consent"?), it is counterproductive, as the sagas of nuclear power and BSE among others have shown.
 

midlife

Guru
You don't have to tell patients all risks, I stick anaesthetic in or onto people most days but never recall telling them a side effect might be methaemoglobinaemia...............

Shaun
 
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