Which of the following features about a thromboplastin preparation is necessary for accurate results?
A) Serial dilutions must be made of the thromboplastin preparation and measured to create a standard curve.
B) The international sensitivity index (ISI) of the thromboplastin preparation should be close to 1.
C) The thromboplastin preparation must be made by and purchased from the International Standardization Committee.
D) The thromboplastin preparation must be tested and certified by the World Health Organization (WHO).
B
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A 74-year-old male with a history of chronic emphysema is complaining of sudden onset of shortness of breath. He appears to be in acute respiratory distress. Physical exam of the anterior chest wall reveals crepitus. Based on the patient's history and physical exam, you would suspect which of the following conditions?
a. Spontaneous pneumothorax b. Congestive heart failure c. Acute bronchitis d. Carbon monoxide poisoning
Which of the following is not an example of a connecting word in ICD-9-CM coding convention?
A. instead of B. due to C. complicated by D. with