You are assessing the cardiac rhythm of a 7-year-old child who says his chest is "fluttering." P waves are not visible, the QRS complexes measure 0.07 seconds in duration, the heart rate is 200 beats/min, and there is no variation in the R-R intervals when the child moves. These findings are MOST consistent with:
A: sinus tachycardia.
B: supraventricular tachycardia.
C: ectopic atrial tachycardia.
D: ventricular tachycardia.
Answer: B: supraventricular tachycardia.
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The anterior aspect of the iliac crest and the anterior superior iliac spine are attachment points for which muscle?
a. Gluteal maximus b. Iliotibial band c. Tensor fasciae latae d. Rectus femoris
Which of the following statements about the equilibrium constant of an acid is true?
a. The equilibrium constant of a weak acid is large. b. The equilibrium constant of a strong acid is small. c. The equilibrium constant of a weak acid is small. d. The more an acid ionizes, the smaller is the equilibrium constant.
The presence of polychromatophilic RBCs on a blood film suggest that there will be:
a. An increase in the reticulocyte count b. Decreased production of RBCs in the bone marrow c. Neutrophilia d. Lymphopenia
Managed care refers to health plans that integrate fully the financial and delivery aspects of health care.
Answer the following statement true (T) or false (F)