Blog

Phospholipid bilayer membranes are selectively permeable. What is meant by the phrase “selectively permeable”?

Use this information for the next three questions. A hospital patient suffering from a chronic internal infection caused by a bacterium was treated with daily injections of the antibiotic streptomycin over a period of 12 days. The following graph shows the results. Graph Representing Antibiotic Treatment Results for Chronic Internal Infections Image Description A graph of the results of antibiotic treatment for a chronic internal infection over a 12-day period. Days Bacteria Per mL Urine ×1007 Antibiotic Resistance 1 8 100000 2 7 100000 3 1 100000 4 >.5 100000 5 >.5 400000 6 .5 425000 7 1 500000 8 1.5 475000 9 1.75 500000 10 2 550000 11 2 525000 12 3 550000 (Antibiotic resistance = minimum inhibitory concentration of streptomycin in μg/ml) Which of the following statements correctly describes these experimental data, or a conclusion that can be properly drawn from them?

During bag-mask ventilation, how should you hold the mask to make an effective seal between the child’s face and the mask?

What is standard deviation? Why is it important in statistics? Why would someone use standard deviation to describe a data set?

I want to collect data on everyone’s favorite model of cars. Which measure of central tendency can be used?

Consider the following two groups. Are these two groups significantly different? (Hint: I give you the SEM, but to compare significance, you need to increase your confidence interval and then compare;)) Group 1:  mean = 5.2, SEM = 0.4 Group 2:  mean = 7.2, SEM = 1.0

A pulseless 6-week-old infant arrives to the emergency department, and high-quality CPR is in progress.  The initial rhythm strip is shown below. EKG pe(1).png   CPR continues, and vascular access has been established.  What is the next appropriate intervention?

An 8-year old child had a sudden onset of palpatations and light-headedness.  At the time of the evaluation the child is alert.  His respiratory rate is 26/min., and his blodd pressure is 104/70 mm Hg.  A cardiac monitor is applied, and the rhythm below is noted. ekg svt.png  What is  the most appropriate intervention?

The exercise of therapeutic privilege straightforwardly violates which principle of Biomedical Ethics:

An 8-year-old child was struck by a car. He arrives in the emergency department alert, anxious, and in respiratory distress. His cervical spine is immobilized, and he is receiving a 10-L/min flow of 100% oxygen by nonrebreathing face mask. His respiratory rate is 60/min, heart rate 150/min, systolic blood pressure 70 mm Hg, and SpO2 84%. Breath sounds are absent over the right chest but present over the left chest, and the trachea is deviated to the left. He has weak central pulses and absent distal pulses. Which intervention should be performed next?