A 4-year-old believes there is more juice in a tall, thin glass than a shorter, wider one. The child has not yet achieved which of the principles of Piaget? {Ans: conservation}You see a 4-year-old for a well-child visit. He has received four diphtheria, tetanus, and acellula pertussis vaccines (DTaP); three injected polio vaccines (IPV); one measles, mumps, and rubella vaccine (MMR): one varicella vaccine: and two hepatitis B (Her B) vaccines. What do vou order todav? {Ans: Tetanus and diphtheria toxoid with acellular pertussis (TaP), MMR, hepatitus B and IPV}Which of the following screenings should adolescents have done annually? a. Psychosocial screening, blood pressure, body mass index b. Blood pressure, hemoglobin, complete physical exam c. Complete physical exam, psychosocial screening,drug testing d. Psychosocial screening, cholesterol screening, blood pressure {Ans: a. Psychosocial screening, blood pressure screening, body mass index}Which of the following vaccines is routinely recommended at 4 months of age? a.Diphtheria, tetanus, acellular pertussis (DaP) b. Oral polio vaccine (OPV) c. Measles, mumps, rubella (MMR) d. Varicella {Ans: a. Diphtheria, tetanus, acellular pertussis (DTaP)}Blood pressure should be measured at well-child visits starting at age: a. 2 yo b. 3 yo c. 4 yo d. 5 yo