PEDS EX 2

What amount of fluid loss occurs with moderate dehydration? a. <50 ml/kg b. 50 to 90 ml/kg c. <5% total body weight d. >15% total body weight

b. 50 to 90 ml/kg Moderate dehydration is defined as a fluid loss of between 50 and 90 ml/kg. Mild dehydration is defined as a fluid loss of less than 50 ml/kg. Weight loss up to 5% is considered mild dehydration. Weight loss over 15% is severe dehydration.

What laboratory finding should the nurse expect in a child with an excess of water? a. Decreased hematocrit b. High serum osmolality c. High urine specific gravity d. Increased blood urea nitrogen

a. Decreased hematocrit The excess water in the circulatory system results in hemodilution. The laboratory results show a falsely decreased hematocrit. Laboratory analysis of blood that is hemodiluted reveals decreased serum osmolality and blood urea nitrogen. The urine specific gravity is variable relative to the child's ability to correct the fluid imbalance.

In what condition should the nurse be alert for altered fluid requirements in children? (Select all that apply.) a. Oliguric renal failure b. Increased intracranial pressure c. Mechanical ventilation d. Compensated hypotension e. Tetralogy of Fallot f. Type 1 diabetes mellitus

a. Oliguric renal failure b. Increased intracranial pressure c. Mechanical ventilation The nurse should recognize that conditions such as oliguric renal failure, increased intracranial pressure, and mechanical ventilation can cause an increase or a decrease in fluid requirements. Conditions such as hypotension, tetralogy of Fallot, and diabetes mellitus (type 1) do not cause an alteration in fluid requirements.

Ongoing fluid losses can overwhelm the child's ability to compensate, resulting in shock. What early clinical sign precedes shock? a. Tachycardia b. Slow respirations c. Warm, flushed skin d. Decreased blood pressure

a. Tachycardia Shock is preceded by tachycardia and signs of poor tissue perfusion and decreased pulse oximetry values. Respirations are increased as the child attempts to compensate. As a result of the poor peripheral circulation, the child has skin that is cool and mottled with decreased capillary refilling after blanching. In children, lowered blood pressure is a late sign and may accompany the onset of cardiovascular collapse.

The nurse is preparing a presentation on compensated, decompensated, and irreversible shock in children. What clinical manifestations related to decompensated shock should the nurse include? (Select all that apply.) a. Tachypnea b. Oliguria c. Confusion d. Pale extremities e. Hypotension f. Thready pulse

a. Tachypnea b. Oliguria c. Confusion d. Pale extremities As shock progresses, perfusion in the microcirculation becomes marginal despite compensatory adjustments, and the signs are more obvious. Signs include tachypnea, oliguria, confusion, and pale extremities, as well as decreased skin turgor and poor capillary filling. Hypotension and a thready pulse are clinical manifestations of irreversible shock.

What type of dehydration occurs when the electrolyte deficit exceeds the water deficit? a. Isotonic dehydration b. Hypotonic dehydration c. Hypertonic dehydration d. Hyperosmotic dehydration

b. Hypotonic dehydration Hypotonic dehydration occurs when the electrolyte deficit exceeds the water deficit, leaving the serum hypotonic. Isotonic dehydration occurs in conditions in which electrolyte and water deficits are present in balanced proportion. Hypertonic dehydration results from water loss in excess of electrolyte loss. This is the most dangerous type of dehydration. It is caused by feeding children fluids with high amounts of solute. Hyperosmotic dehydration is another term for hypertonic dehydration

What clinical manifestations should be observed in a 2-year-old child with hypotonic dehydration? (Select all that apply.) a. Thick, doughy feel to the skin b. Slightly moist mucous membranes c. Absent tears d. Very rapid pulse e. Hyperirritability

b. Slightly moist mucous membranes c. Absent tears d. Very rapid pulse Clinical manifestations of hypotonic dehydration include slightly moist mucous membranes, absent tears, and a very rapid pulse. A thick, doughy feel to the skin and hyperirritability are signs of hypertonic dehydration.

What is the required number of milliliters of fluid needed per day for a 14-kg child? a. 800 b. 1000 c. 1200 d. 1400

c. 1200 For the first 10 kg of body weight, a child requires 100 ml/kg. For each additional kilogram of body weight, an extra 50 ml is needed. 10 kg ´ 100 ml/kg/day = 1000 ml 4 kg ´ 50 ml/kg/day = 200 ml 1000 ml + 200 ml = 1200 ml/day Eight hundred to 1000 ml is too little; 1400 ml is too much.

An infant is brought to the emergency department with the following clinical manifestations: poor skin turgor, weight loss, lethargy, tachycardia, and tachypnea. This is suggestive of which situation? a.Water excess b. Sodium excess c. Water depletion d. Potassium excess

c. Water depletion These clinical manifestations indicate water depletion or dehydration. Edema and weight gain occur with water excess or overhydration. Sodium or potassium excess would not cause these symptoms.