When the volume of blood in the ventricle at the end of diastole increases, the force of the myocardial contraction during the next systole will also increase, which is an example of which law or theory about the heart?
a. Laplace’s law
b. Poiseuille law
c. Cross-bridge theory
d. Frank-Starling law
Ans: d. Frank-Starling law
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Which provision—if labor management included it in a contract—would not be to nursing's advantage?
a. A workforce retraining provision b. Seniority rights c. A grievance procedure d. Wage adjustments based on bed occu-pancy
The median scores of two groups participating in a study are exactly the same for a particular variable. This suggests that the
a. average score is the same for both groups. b. the middle score is the same for both groups. c. the most frequent score is the same for both groups d. groups are very much alike in relation to the variable.
The nurse is reviewing the laboratory results for an older patient experiencing a new-onset of atrial fibrillation. On which laboratory value should the nurse focus as a potential cause for this diagnosis?
1. Hgb 13.8 g/dL 2. Hgb 11.0 g/dL 3. TSH 18 mU/mL 4. TSH 0.25 mU/mL
The nurse is assessing a preterm newborn's fluid and hydration status. Which of the following would alert the nurse to possible overhydration?
A) Decreased urine output B) Tachypnea C) Bulging fontanels D) Elevated temperature