diabetestalk.net

What Causes Respiratory Acidosis And Alkalosis?

Share on facebook

Respiratory Acidosis/ Alkalosis

Don't miss your chance to win free admissions prep materials! Click here to see a list of raffles . So, I am reading up on acid-base disturbances, which have always given me a bit of trouble. I think I am understanding them a lot better now, but am still confused about how the different lung diseases in particular cause either resp. acidosis or alkalosis. Different resources say different things and the sources I've taken a look at don't really do a good job of explainingthe reason why a particular disease causes acidosis or alkalosis. Take for example, restrictive and obstructive lung diseases. I can understand that with an obstructive lung disease you have trouble getting air out of the lungs, so less CO2 is removed --> respiratory acidosis. But what about restrictive lung disease? Different books say different things - some say that they cause resp. acidosis, while others say they cause resp. alkalosis. Nobody seems to give a good explanation either way. I think I can reason out that restrictive lung disease, esp. interstitial lung disease, --> imparied diffusion of CO2 out of the lungs --> resp. acidosis). What about pulmonary edema and pneumonia? Some sources say resp acidosi Continue reading >>

Share on facebook

Popular Questions

  1. TSHELTON2005

    you will find some information and links in this thread:
    http://allnurses.com/forums/f205/pat...es-145201.html - pathophysiology/a & p/fluid & electrolyte resources (in nursing student assistant forum)
    respiratory acidosis: big symptom to remember is the patients have a lot of trouble breathing because of pulmonary congestion, but note the symptoms of the breathing compared to the breathing symptoms of respiratory alkalosis. you'll hear them say things like, "i can't catch my breath." you see this when there has been chest trauma, airway obstruction, pulmonary edema, drug overdose, neuromuscular diseases and in copd. the basic pathophysiology of this is that the patient is not clearing carbon dioxide from their body. hypoventilation (reduced rate and depth of breathing) causes an increase in carbon dioxide throughout the cells and tissues of the body. the hypoventilation results in pulmonary congestion and airway obstruction which leads to all the breathing difficulties.
    symptoms are:
    ph below 7.35 and pco2 over 45mmhg
    rapid, shallow respirations
    hypoventilation
    dyspnea
    elevated blood pressure
    headache
    hyperkalemia
    disorientation
    elevated cardiac output
    muscle weakness

    hypoxia
    respiratory alkalosis: hyperventilation, rapid rate of breathing, causes too much carbon dioxide to be exhaled and the ph of the body rises. the cardinal sign of respiratory alkalosis is the deep, rapid breathing, more than 40 breaths per minute, that is similar to kussmaul's respirations (seen in metabolic acidosis). this kind of breathing leads to neuromuscular and central nervous system disturbances. this will occur in pulmonary diseases such as asthma, as well as in pregnancy, fever, at high altitudes and with acute anxiety. think of the things that would cause a person to breathe very rapidly and cause large losses of carbon dioxide.
    symptoms are:
    ph elevated above 7.45 and pco2 below 35mmhg
    rapid, deep breathing
    hyperventilation
    agitation
    paresthesias
    seizures
    confusion
    hypokalemia
    lightheadedness
    dizziness

    tingling of the extremitieshope this helps.

  2. TexasTac

    the rome mnemonic has always been helpful to me:
    r respiratory
    o opposite
    ph up pco2 down = alkalosis
    ph down pco2 up = acidosis
    m metabolic
    e equal
    ph up hco2 up = alkalosis
    ph down hcos down = acidosis

  3. Beech1184

    The main thing to remember is that the lungs are the major way we dispose of acid products of metabolism in the form of CO2 and water vapor or CO3. 13,000 meq of acid are excreted versus 50 meq for the kidneys in 24 hrs. Anything that causes hypoventilation will thus cause acidosis. It can be life threatening especially in the very young and the old.
    Respratory alkalosis is usually self limiting and much less common. The most common cause is hysteria.

  4. -> Continue reading
read more close

Related Articles

Popular Articles

More in ketosis