What Is Respiratory Acidosis

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Respiratory Acidosis

LABORATORY TESTS The following lab tests can be used to interpret and explain acidosis and alkalosis conditions. All are measured on blood samples. 1. pH: This measures hydrogen ions - Normal pH = 7.35-7.45 2. pCO2= Partial Pressure of Carbon Dioxide: Although this is a pressure measurement, it relates to the concentration of GASEOUS CO2 in the blood. A high pCO2 may indicate acidosis. A low pCO2 may indicate alkalosis. 3. HCO3- = Bicarbonate: This measures the concentration of HCO3- ion only. High values may indicate alkalosis since bicarbonate is a base. Low values may indicate acidosis. 4. CO2 = Carbon Dioxide Content: This is a measure of ALL CO2 liberated on adding acid to blood plasma. This measure both carbon dioxide dissolved and bicarbonate ions and is an older test. Do not confuse with pCO2 Typically, dissolved carbon dioxide = l.2-2.0 mmoles/L and HCO3- = 22-28 mmoles/L Therefore, although it is listed as CO2 content, the lab test really reflects HCO3- concentration. Respiratory Acidosis .ABNORMAL pH IN THE BODY: ACIDOSIS AND ALKALOSIS: INTRODUCTION: Normal blood pH is maintained between 7.35 and 7.45 by the regulatory systems. The lungs regulate the amount of carbon dio Continue reading >>

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  1. celiacgirls

    This past weekend, my 8 year old daughter was complaining that she was always thirsty. Then on Tuesday, my husband noticed she had acetone breath. She has had it before, last January, and they did the blood sugar test in the pediatrician's office and it was fine. They said her bad breath could be from not brushing her teeth properly. I don't really buy that but it did go away until now. She had just brushed her teeth when my husband noticed it. Because of the increased thirst and the acetone breath, I have her scheduled for the blood test again on Monday, when her doctor gets back from vacation.
    Are there any other causes of acetone breath that aren't related to diabetes? Even if her blood sugar is ok, could this be a sign she is at risk of diabetes?
    I'm already expecting the doctor to think I'm just an overzealous mom. I did tell her the girls are on a gluten-free/CF diet due to Enterolab and she didn't seem overly interested one way or the other, so maybe there is hope she will be ok with this.

  2. CarlaB

    I don't know about acetone breath, but I notice my kids get very bad breath even right after they've brushed if they have loose teeth, even slightly loose, it's like you can smell the root rotting away.
    I'd still have her checked out to be sure, but it's not unusual for a kid to have bad breath.

  3. 2kids4me

    This is an excellent link that discusses why a non-diabetic child may have acetone breath.
    a bit from that link:

    My six year old adopted son has had acetone breath consistently for several weeks. I've tested his urine with the strips for glucose and ketones twice, and they are both negative. He has had this previously only when he was slightly dehydrated from bouts of nausea and vomiting. He is otherwise perfectly healthy and active and has no symptoms of diabetes. We have a dog with diabetes which is why I am familiar with the signs and the breath odor and have the urine strips. Are there other causes of acetone breath in an otherwise normal six year old? In view of the negative strips should I still have his blood glucose tested?
    Not everyone can smell acetone, but if you can, the most sensitive vehicle is the breath which may explain why urine testing has been negative. Ketosis in children can occur when the body is unable to get sufficient basal energy needs from the metabolism of carbohydrate and resorts to the breakdown of fat stores with the production of ketones. This can occur because of diabetes, but, as you have noticed, this is most likely to occur when appetite is diminished by intercurrent illness. The same can happen if energy consumption is increased and a child is too busy to eat sufficiently.

    I think it very unlikely that what you describe has anything to do with diabetes, but if you have a diabetic dog and the means of measuring blood sugars you might test your son after a period of energetic activity to see if it is low because the phenomenon I have described is called ketotic hypoglycemia.

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