Question

Refer to the diagnostic flowchart in Spotlight Figure 27–18. Use information from the blood test results in the accompanying table to categorize the suspected acid-base disorders of the patients represented in the table.

Accepted Answer

Step 1: Understand the key parameters involved in acid-base disorders, typically including blood pH, partial pressure of carbon dioxide (pCO\_2), and bicarbonate ion concentration (HCO\_3\^-). These values help determine whether the disorder is respiratory or metabolic and whether it is acidosis or alkalosis. Step 2: For each patient, examine the blood pH value to determine if the patient is acidotic (pH  7.45), or within the normal range (7.35–7.45). This is the primary indicator of acid-base status. Step 3: Analyze the pCO\_2 value to assess respiratory contribution. An elevated pCO\_2 suggests respiratory acidosis, while a decreased pCO\_2 suggests respiratory alkalosis. Compare this with the pH to see if the respiratory component aligns with the acid-base disturbance. Step 4: Examine the HCO\_3\^- concentration to evaluate the metabolic component. A decreased HCO\_3\^- indicates metabolic acidosis, while an increased HCO\_3\^- indicates metabolic alkalosis. Again, compare this with the pH to confirm the metabolic disturbance. Step 5: Use the diagnostic flowchart to integrate these values: start with pH to identify acidosis or alkalosis, then determine if the primary cause is respiratory or metabolic by comparing pCO\_2 and HCO\_3\^- levels. Finally, check for compensation by seeing if the non-primary parameter is changing in the opposite direction to partially correct the pH.

Refer to the diagnostic flowchart in Spotlight Figure 27–18. Use information from the blood test results in the accompanying table to categorize the suspected acid-base disorders of the patients represented in the table.

비슷한 문제에 대한 검증된 영상 답변:

주요 개념

Acid-Base Balance and Disorders

Interpretation of Blood Gas Results

Use of Diagnostic Flowcharts in Clinical Assessment