Podcast
Questions and Answers
What is the primary cause of metabolic acidosis?
What is the primary cause of metabolic acidosis?
- Exhalation of carbon dioxide by the lungs
- Breathing disorders affecting carbon dioxide levels
- Imbalance in production of acids or bases by the kidneys (correct)
- Ingestion of substances that produce acid
Which compensatory mechanism is generally involved in restoring blood pH in metabolic disturbances?
Which compensatory mechanism is generally involved in restoring blood pH in metabolic disturbances?
- Endocrine system
- Digestive system
- Respiratory system
- Renal system (correct)
What indicates that the body's compensatory mechanisms for acid-base disturbances are failing?
What indicates that the body's compensatory mechanisms for acid-base disturbances are failing?
- Restoration of blood pH close to normal levels
- Increased carbon dioxide exhalation
- Decreased acidity in ingested substances
- Significant change in blood pH (correct)
How does blood acidity increase in individuals?
How does blood acidity increase in individuals?
Which acid-base disturbance is primarily compensated for by the respiratory system?
Which acid-base disturbance is primarily compensated for by the respiratory system?
What is the cause of respiratory alkalosis?
What is the cause of respiratory alkalosis?
In metabolic alkalosis, what is the primary factor leading to the imbalance of acids and bases?
In metabolic alkalosis, what is the primary factor leading to the imbalance of acids and bases?
What happens to the blood pH if the body's ability to compensate for an acid-base disturbance is failing?
What happens to the blood pH if the body's ability to compensate for an acid-base disturbance is failing?
Study Notes
Types of Acidosis and Alkalosis
- Acidosis and alkalosis are categorized into two types: Metabolic and Respiratory
- Metabolic acidosis and metabolic alkalosis are caused by an imbalance in the production of acids or bases and their excretion by the kidneys
- Respiratory acidosis and respiratory alkalosis are caused by changes in carbon dioxide exhalation due to lung or breathing disorders
Compensation for Acid-Base Disorders
- The body has automatic compensatory mechanisms to push the blood pH back towards normal
- Respiratory system compensates for metabolic disturbances, while metabolic mechanisms compensate for respiratory disturbances
- If the blood pH has changed significantly, it means the body's ability to compensate is failing
Acidosis
- Blood acidity increases when people ingest substances that contain or produce acid or when the lungs do not expel enough carbon dioxide
- In rare cases, metabolic alkalosis develops in a person who has ingested too much base from substances such as baking soda (bicarbonate of soda)
Metabolic Alkalosis
- Develops when the body loses too much acid or gains too much base
- Can occur when excessive loss of fluids and electrolytes (such as sodium or potassium) affects the kidneys' ability to maintain the blood's acid-base balance
- Causes of metabolic alkalosis include overactive adrenal gland, use of diuretics, and loss of potassium
Respiratory Alkalosis
- Develops when rapid, deep breathing (hyperventilation) causes too much carbon dioxide to be expelled from the bloodstream
- The most common cause of hyperventilation is anxiety, but can also be caused by pain, low levels of oxygen in the blood, fever, and aspirin overdose
Symptoms of Alkalosis
- Irritability
- Muscle twitching and cramps
- Tingling in the fingers and toes and around the lips
- Muscle spasms (tetany) can develop in severe cases
Treatment of Alkalosis
- Metabolic alkalosis is treated by replacing water and mineral salts such as sodium and potassium (electrolytes) and correcting the cause
- Respiratory alkalosis is treated by correcting the cause
Blood pH
- The pH scale ranges from 0 (strongly acidic) to 14 (strongly basic or alkaline)
- A pH of 7.0 is neutral
- Blood is normally slightly basic, with a normal pH range of 7.35 to 7.45
- The body usually maintains the pH of blood close to 7.40
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Description
Learn about the different types of acidosis and alkalosis categorized as metabolic or respiratory, caused by various primary factors such as kidney imbalances or lung disorders. Understand how patients can have multiple acid-base disorders and the mechanisms of compensation for these imbalances.
