EBK HUMAN BIOLOGY
EBK HUMAN BIOLOGY
8th Edition
ISBN: 8220102019683
Author: Johnson
Publisher: PEARSON
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Chapter 13, Problem 6AWK

A student finishes up the fall semester with several term papers and a number of big exams. After the semester, she goes home for the holidays and comes down with a bad cold. The following year the same thing happens; she's sick for the holidays. During her senior year, the fall semester isn't too bad, but applications to graduate school are due and she spends most of her semester break filling out forms and nervously worrying about what she will do next year. She's again sick for the beginning of the next term. Is this student just unlucky, or is something else at work?

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Ella is an attorney who has worked in private practice for 25 years. She estimates she works 70 hours/week between the office and the courtroom. She has attributed her persistent fatigue to her schedule, poor diet (“I usually eat on the run, whatever is available”) and alcohol consumption (“I drink a bottle of wine a couple nights a week, and maybe more at the weekend especially if there are lots of dinners with clients”). Her fatigue has recently worsened and she has been feeling nauseous and light-headed consistently over the last several days.   Parameter Result Normal Glucose 87 70-99 mg/dL BUN 12 7-22 mg/dL Creatinine 0.71 0.5-1.2 mg/dL Na 141 135-145 mmol/L K 4.9 3.5-5.3 mmol/L Cl 103 98-109 mmol/L CO2 24 22-26 mmol/L Calcium 9.2 8.6-10.2 mg/dL Phosphorus 2.7 2.6-4.9 mg/dL Albumin 3.0 3.2-4.6 g/dL Bilirubin 2.2 0.2-1.2 mg/dL Lactate dehydrogenase (LDH) 190 99-191 IU/L…
Ella is an attorney who has worked in private practice for 25 years. She estimates she works 70 hours/week between the office and the courtroom. She has attributed her persistent fatigue to her schedule, poor diet (“I usually eat on the run, whatever is available”) and alcohol consumption (“I drink a bottle of wine a couple nights a week, and maybe more at the weekend especially if there are lots of dinners with clients”). Her fatigue has recently worsened and she has been feeling nauseous and light-headed consistently over the last several days. How do you interpret the increases in ALT, AST and LDH and what is the most likely cause of this?    Lactate dehydrogenase (LDH) 190 99-191 IU/L Aspartate amino-transferase (AST) 260 12-45 IU/L Alanine aminotransferase (ALT) 76 <34 IU/L
Twenty-six-year-old Wei isn’t feeling well. Wei uses he/him/his pronouns. He is more tired than usual, dragging through his workdays despite going to bed earlier and napping on the weekends. He doesn't have much of an appetite and has started losing weight. When he presses on the side of his neck he notices an unusual lump.  Wei goes to his doctor, who performs a physical exam and determines that the lump is a swollen lymph node. Lymph nodes are part of the immune system, and they will often become enlarged when the body is fighting off an infection. Dr. Bouazizi thinks that the swollen lymph node and fatigue could be signs of a viral or bacterial infection, or indicate a type of cancer called lymphoma. However, an infection is a more likely cause, particularly in a young person like Wei. Dr. Bouazizi prescribes an antibiotic in case Wei has a bacterial infection and advises him to return in a few weeks if his lymph node does not shrink or if he is not feeling better. Wei returns a few…
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