HLA-B27 lab and ankylosing spondylitis

CASE STUDY:

A 32-year-old Caucasianmale presents to the office with complaints of back pain, stiffness, especially in the morning, interrupted sleep due to pain, and difficulty in leaning over to tie his shoes. The patient first noticed these symptoms about 6 months ago but attributed them to his weekend basketball team’s He said he is exhausted due to sleep interruption. He has taken acetaminophen with some relief but says the naproxen seems to be working better. Married with 2 small children and works as a bank manager. Physical exam: Lungs clear but decreased chest excursion noted as well as decreased range of motion of hips and forward flexion, rotation, and lateral flexion restricted. Spine radiographs in the office revealed a slight kyphosis along with ankylosis at L5-S1. The APRN suspects the patient may have ankylosing spondylitis (AS). The APRN orders laboratory tests including an HLA-B27.

Question:

Why did the APRN order an HLA-B27 lab? How would that lab result assist in understanding what ankylosing spondylitis

Rheumatoid arthritis and Osteoarthritis

CASE STUDIES:

A 42-year-old woman presents to the clinic with a four-month history of generalized joint pain, stiffness, and swelling, especially in her hands. She states that these symptoms have made it difficult to grasp objects and has made caring for her 6 and 4-year-old children problematic. She admits to increased fatigue, but she thought it was due to her stressful job as well as being a single mother.

No significant past medical history but recalls that one of her grandmothers had “crippling” arthritis. Physical exam remarkable for bilateral ulnar deviation of her hands as well as soft, boggy proximal interphalangeal joints. The metatarsals of both of her feet also exhibited swelling and warmth. The diagnosis for this patient is rheumatoid arthritis.

Question:

Explain why patients with rheumatoid arthritis exhibit these symptoms and how does it differ from osteoarthritis?

Osteoporosis

CASE STUDY

A 72-year-old female was walking her dog when the dog suddenly tried to chase a squirrel and pulled the woman down. She tried to break her fall by putting her hand out and she landed on her outstretched hand. She immediately feltsevere pain in her right wrist and noticed her wrist looked deformed. Her neighbor saw the fall and brought the woman to the local Urgent Care Center for evaluation. Radiographs revealed a Colles’ fracture (distal radius with dorsal displacement of fragments) as well as radiographic evidence of osteoporosis. A closed reduction of the fracture was successful, and she was placed in a posterior splint with ace bandage wrap and instructed to see an orthopedist for follow up.

Question:

What is osteoporosis and how does it develop? 

Lyme disease

CASE STUDY

Stan is a 45-year-old man who presents to the clinic complaining of intermittent fevers, joint pain, myalgias, and generalized fatigue. He noticed a rash several days ago that seemed to appear and disappear on different parts of his abdomen. He noticed the lesion below this morning and decided to come in for evaluation. He denies recent international travel and the only difference in his usual routine was clearing some underbrush from his back yard about a week ago.

Past medical history non-contributory with exception of severe allergy to penicillin resulting in hives and difficulty breathing. Physical exam: Temp 101.1 ˚F, BP 128/72, pulse 102 and regular, respirations 18. Skin inspection revealed a 4-inch diameter bull’seye type red rash over the left flank area. The APRN, based on history and physical exam, diagnoses the patient with Lyme Disease. She ordered appropriate labs to confirm diagnosis but felt it urgent to begin antibiotic therapy to prevent secondary complications.

Question:

What is Lyme disease and what patient factors may have increased his risk of developing Lyme disease? 

Acute Gout

A 52-year-old obese Caucasian male presents to the clinic with a 2-day history of fever, chills, and right great toe pain that has gotten worse. Patient states this is the first time that this has happened, and nothing has made it better and walking on his right foot makes it worse. He has tried acetaminophen, but it did not help. He took several ibuprofen tablets last night which did give him a bit of relief. Past medical history positive or hypertension treated with hydrochlorothiazide and kidney stones. Social history negative for tobacco use but admits to drinking “a fair amount of red wine” every week. General appearance: Ill appearing male who sits with his right foot elevated. Physical exam remarkable for a temp of 101.2, pulse 108, respirations 18 and BP 160/88. Right great toe (first metatarsal phalangeal [MTP]) noticeably swollen and red. Unable to palpate to assess range of motion due to extreme pain. CBC and Complete metabolic profile revealed WBC 14,000 mm3 and uric acid 8.9 mg/dl. The APRN diagnoses the patient with acute gout.

Question 1 of 2:

Describe the pathophysiology of gout.

Explain why a patient with gout is more likely to develop renal calculi. 

Widespread Pain Index

The APRN tells the patient that the tender points are no longer used to diagnose FM. She suggests that the patient takes the Widespread Pain Index (WPI) and the Symptom Severity Inventory (SSI). The patient asks the APRN what these tests are for. What is the APRN’s best answer?

Fibromyalgia

What are the underlying causes of fibromyalgia?

Osteoarthritis

Describe how osteoarthritis develops and forms and distinguish primary osteoarthritis from secondary arthritis.

Fibrillation and cerebral vascular accident

How does atrial fibrillation contribute to the development of a (cerebral vascular accident) CVA?

Cerebral perfusion pressure (CPP)

What are the factors that determine (cerebral perfusion pressure) CPP?