Hematopoietic

 

 

 

J.D. is a 37 years old white woman who presents to her gynecologist complaining of a 2-month history of intermenstrual bleeding, menorrhagia, increased urinary frequency, mild incontinence, extreme fatigue, and weakness. Her menstrual period occurs every 28 days and lately there have been 6 days of heavy flow and cramping. She denies abdominal distension, back-ache, and constipation. She has not had her usual energy levels since before her last pregnancy.
Past Medical History (PMH):
Upon reviewing her past medical history, the gynecologist notes that her patient is a G5P5with four pregnancies within four years, the last infant having been delivered vaginally four months ago. All five pregnancies were unremarkable and without delivery complications. All infants were born healthy. Patient history also reveals a 3-year history of osteoarthritis in the left knee, probably the result of sustaining significant trauma to her knee in an MVA when she was 9 years old. When asked what OTC medications she is currently taking for her pain and for how long she has been taking them, she reveals that she started taking ibuprofen, three tablets each day, about 2.5 years ago for her left knee. Due to a slowly progressive increase in pain and a loss of adequate relief with three tablets, she doubled the daily dose of ibuprofen. Upon the recommendation from her nurse practitioner and because long-term ibuprofen use can cause peptic ulcers, she began taking OTC omeprazole on a regular basis to prevent gastrointestinal bleeding. Patient history also reveals a 3-year history of HTN for which she is now being treated with a diuretic and a centrally acting antihypertensive drug. She has had no previous surgeries.
Case Study Questions

Name the contributing factors on J.D that might put her at risk to develop iron deficiency anemia.
Within the case study, describe the reasons why J.D. might be presenting constipation and or dehydration.
Why Vitamin B12 and folic acid are important on the erythropoiesis? What abnormalities their deficiency might cause on the red blood cells?
The gynecologist is suspecting that J.D. might be experiencing iron deficiency anemia.
In order to support the diagnosis, list and describe the clinical symptoms that J.D. might have positive for Iron deficiency anemia.
If the patient is diagnosed with iron deficiency anemia, what do you expect to find as signs of this type of anemia? List and describe.
Labs results came back for the patient. Hb 10.2 g/dL; Hct 30.8%; Ferritin 9 ng/dL; red blood cells are smaller and paler in color than normal. Research list and describe for appropriate recommendations and treatments for J.D.
Cardiovascular
Mr. W.G. is a 53-year-old white man who began to experience chest discomfort while playing tennis with a friend. At first, he attributed his discomfort to the heat and having had a large breakfast. Gradually, however, discomfort intensified to a crushing sensation in the sternal area and the pain seemed to spread upward into his neck and lower jaw. The nature of the pain did not seem to change with deep breathing. When Mr. G. complained of feeling nauseated and began rubbing his chest, his tennis partner was concerned that his friend was having a heart attack and called 911 on his cell phone. The patient was transported to the ED of the nearest hospital and arrived within 30 minutes of the onset of chest pain. In route to the hospital, the patient was placed on nasal cannula and an IV D5W was started. Mr. G. received aspirin (325 mg po) and 2 mg/IV morphine. He is allergic to meperidine (rash). His pain has eased slightly in the last 15 minutes but is still significant; was 9/10 in severity; now7/10. In the ED, chest pain was not relieved by 3 SL NTG tablets. He denies chills.
Case Study Questions

For patients at risk of developing coronary artery disease and patients diagnosed with acute myocardial infarct, describe the modifiable and non-modifiable risk factors.
What would you expect to see on Mr. W.G. EKG and which findings described on the case are compatible with the acute coronary event?
Having only the opportunity to choose one laboratory test to confirm the acute myocardial infarct, which would be the most specific laboratory test you would choose and why?
How do you explain that Mr. W.G temperature has increased after his Myocardial Infarct, when that can be observed and for how long? Base your answer on the pathophysiology of the event.
Explain to Mr. W.G. why he was experiencing pain during his Myocardial Infarct. Elaborate and support your answer.

Sample Solution

J.D.’s Case (Iron Deficiency Anemia)

Contributing factors for iron deficiency anemia:

  • Menorrhagia (heavy menstrual bleeding): This is the most likely culprit as it can lead to significant blood loss and iron depletion over time.
  • Frequent pregnancies: Closely spaced pregnancies can deplete iron stores, especially if iron supplementation wasn’t taken during pregnancy.
  • Non-steroidal anti-inflammatory drugs (NSAIDs): Chronic use of ibuprofen can irritate the stomach lining and contribute to blood loss, worsening iron deficiency.

Constipation and dehydration:

The case study doesn’t explicitly mention constipation or dehydration. However, these can be potential issues due to:

  • Iron deficiency anemia: This can cause fatigue and weakness, which might decrease activity level and contribute to constipation.
  • Diuretic medication for HTN: Diuretics can increase urination and potentially lead to dehydration if proper fluid intake isn’t maintained.

Importance of Vitamin B12 and folic acid in red blood cell production (erythropoiesis):

  • Vitamin B12 and folic acid are essential for DNA synthesis, which is crucial for red blood cell production.
  • Deficiency in either can lead to megaloblastic anemia, characterized by large, abnormal red blood cells. These cells are fragile and function poorly.

Clinical symptoms suggestive of iron deficiency anemia in J.D.:

  • Extreme fatigue and weakness: These are classic symptoms due to reduced oxygen delivery to tissues.
  • Menorrhagia: As mentioned earlier, this is a contributing factor but can also be a symptom of iron deficiency.
  • Pale skin: This can occur due to a decrease in red blood cells carrying oxygen.

Signs of iron deficiency anemia:

  • Laboratory tests:
    • Low hemoglobin (Hb) and hematocrit (Hct) indicate reduced red blood cell count and oxygen-carrying capacity.
    • Low ferritin levels suggest iron deficiency.
    • Microcytic hypochromic red blood cells: These are smaller and paler red blood cells due to insufficient iron for hemoglobin production.

Recommendations and treatments for J.D.:

  • Iron supplementation: Oral iron is the first-line treatment. The dose and type will depend on the severity of deficiency.
  • Dietary changes: Increasing iron-rich foods like red meat, dark leafy vegetables, and fortified cereals can improve iron intake.
  • Management of menorrhagia: Medications or procedures might be needed to control heavy menstrual bleeding.
  • Review of NSAID use: NSAIDs might need to be reduced or replaced with a different medication to prevent further blood loss.
  • Treating underlying HTN: Continuing her current medications or adjusting them as needed to maintain good blood pressure control.

Mr. W.G.’s Case (Acute Myocardial Infarction)

Modifiable and non-modifiable risk factors for coronary artery disease and myocardial infarction:

Modifiable:

  • High blood pressure (HTN) – J.D.’s case doesn’t mention Mr. W.G.’s BP, but HTN is a common risk factor.
  • High cholesterol
  • Diabetes
  • Smoking
  • Obesity
  • Physical inactivity
  • Unhealthy diet

Non-modifiable:

  • Age (Men over 45 and women over 55 are at higher risk)
  • Family history of heart disease

EKG findings and compatible findings with acute coronary event:

  • EKG might show changes like ST-segment elevation or Q waves in leads corresponding to the affected heart area.
  • Mr. W.G.’s crushing chest pain radiating to the neck and jaw, nausea, and pain not relieved by nitroglycerin are all signs compatible with acute coronary syndrome.

Most specific laboratory test for confirming acute myocardial infarction:

  • Troponin levels: Cardiac muscle damage releases troponin enzymes. An elevated troponin level is highly specific for heart muscle injury.

Fever after myocardial infarction:

  • Mr. W.G. might develop a low-grade fever (up to 100.5°F) within 1-3 days after the heart attack.
  • This is due to inflammation in response to the damaged heart tissue.

Pain during myocardial infarction:

  • The pain occurs due to a combination of factors:
    • Reduced blood flow to the heart muscle leads to ischemia (oxygen deprivation). Ischemic tissue releases chemicals that stimulate pain receptors.
    • Inflammation triggered by the injury further contributes to pain.

I hope this explanation clarifies both cases!

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