Explain how the coagulation of blood can be prevented by the addition of oxalates, citrates, EDTA, or heparin
What will be an ideal response?
Answer: Oxalates, citrates, and EDTA prevent the coagulation of blood by removing calcium and forming insoluble calcium salts. These three anticoagulants cannot be used in calcium determinations; however, citrates are frequently used in coagulation blood studies. EDTA prevents platelet aggregation and is therefore used for platelet counts and platelet function tests. Fresh EDTA-anticoagulated blood allows preparation of blood films with minimal distortion of white blood cells (WBCs). Heparin, a mucopolysaccharide used in assays, such as ammonia and plasma hemoglobin, prevents blood clotting by inactivating the blood-clotting chemicals thrombin and Factor X.
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A) Symptom B) Sign C) Complaint D) Diagnosis
To code an evaluation and management (E/M) service properly for a new patient, which of the following elements must be documented?
A) history and examination B) history and medical decision making C) examination only D) history, examination, and medical decision making
According to the WHO, health education comprises consciously constructed opportunities for learning involving communication designed to improve health literacy, including improving knowledge and developing life skills that are conducive to the promotion of individual and community health.?
Indicate whether the statement is true or false
Which term means the back of the body or body part?
A) Cephalad B) Proximal C) Dorsal D) External E) Prone