The Sherlock Holmes Assignment AKA The Unknown Lab  

Objectives                                                          Name____________________

Following this lab exercise and project the student will be able to:
 

1.  Integrate lab skills and tests to identify an unknown.

2.  Justify the lab procedures used, identification, and treatment of the patient.

3.  Evaluate the patient in light of the unknown identification and patient's immune status.

4.  Determine the proper care and treatment for the patient using and citing valid references.

 Unknown Number______________ 

Patient’s Name____________________ 

                                    Assignment:

1.      assess your patient’s condition

2.      propose a differential diagnosis from the history

3.       determine the necessary tests for a definitive diagnosis

4.       identify the etiologic agent infecting your patient

5.      propose a treatment and long-term care for the patient

Prepare a chart for your patient. The first page should include the patient history and any relevant research you do with regards to any of your patient’s conditions relevant to the history. This page should also include a differential diagnosis.

The second page should include any tests that you determine are necessary for the proper identification and treatment of the patient. You are to order and perform only the necessary tests, you will lose points of you do any tests that are unnecessary or do the shotgun method using every test you have ever done or read about. If there are other tests you feel are necessary, but they can not realistically be performed in our lab, indicate these and why they would be important. In addition to microbiological tests you may want to include orders for a CBC, X-Ray, skin test, etc.

The third page should be a record of every test you performed (and the date), the rationale for doing the test, and the results of the test (and the date the test was completed). Explain how these tests helped to rule out the differential diagnosis.

The fourth page will include a summary of the definitive diagnosis, identification of the etiologic agent, information about the agent, a proposed course of treatment and long-term care.


 

Step 1 Getting Started (Beginning on this page, you will fill out and turn in these charts showing the logical progressive thinking and lab work you have done along with the final report that should respond to the rubric.)

Before you begin observe your specimen. Using the checklist make important observations from the clinical specimen.

Specimen Checklist

Source

List significant concerns or comments about the specimen source.

 

Condition of specimen

What characteristics may be important concerning the original specimen? Is there blood? Is it moist? Are there any foreign objects, pus, clots etc?

  

 

Time specimen taken

 

Time Cultured

How recently was the specimen taken and will this have any influence on the results? Are there any transportation concerns regarding this type of specimen and culture?

 

 

Differential diagnosis or hypothesis

What are the most likely pathogens found in this type of specimen?

 

Normal flora

Would you expect to find normal flora present in specimens from this source location? If so, what would be most common?

 

Media

What types of media are commonly used for this specimen?

 

 

Incubation Considerations

Considering the location of the specimen are there any special incubation conditions you should consider?

 

Step 2           Fill in the table below.

Media Inoculated

Rationale for using this media

Date Inoculated/Date read

Results/ Notes/ Thoughts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Record the Gram stain reaction of each different colony type found on the media.

Gram Stain (create a number to identify the colonies and mark it on the plate)/ Colony description

Recovered from which plate/On what date

Notes (Is this potentially normal flora? Is this a typical result? Anything unexpected? Does the colony morphology match the Gram stain and media selectivity?)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Determine the appropriate lab tests you will need to continue the investigation. In addition, if you think there should be other tests, such as a cbc or x-ray, that we can not do, indicate that you would order those tests.

Step 3 Test Results

Lab test

Date inoculated/date read

rationale for lab test

Result and interpretation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

Step 4 – Identification and Sensitivity

Determine the identification of your etiologic agent.

What particular types of pathogenic capabilities (if any) does this pathogen display?

Using the Sanford Guide select at least 8 antibiotics in order to test the sensitivity of the agent. Remember to consider cost, narrow and broad spectrum, target agent, target tissue, and administration as well as any side-effects.

Antibiotics available for testing will include the following and any additional mentioned in class:

Amoxicillin/
Clavulanic Acid

Ceftriaxone

Impenem

Tetracycline

Amikacin

Cefotaxime

Levofloxacin

Ticarcillin

Ampicillin

Chloramphenicol

Oxacillin

Tobramycin

Azithromycin

Ciprofloxacin

Penicillin

Vancomycin

Bacitracin

Clindamycin

Pipericillin

 

Cefaclor

Doxycycline

Nitrofurantoin

 

Cefazolin

Erthromycin

Sulfasoxazole

 

Cefixime

Gentamicin

Sulfa-Trimeth SXT

 

 

Step 5- Resolution, Treatment and Prognosis


 

Determine factors concerning your patient that are relevant to resolving the patient’s condition. Review the immune status of your patient. Determine future treatment and care of your patient and their unique situation.

 

 

 

 

Step 6 – Create a patient chart that will be graded with the rubric on the following page.
Grading Rubric for the Unknown Case Report
 Name______________________________________________________

Criteria

1

2-3

3-4

5-6

Points

Writing & Scientific Terminology

The report shows evidence of spelling and grammar errors.

Few spelling and grammar errors.

The report displays uniform formatting, proper grammar and spelling.

The report displays no errors, proper formatting, excellent references and a high level of appropriate scientific vocabulary.

 

Analysis of Patient History

The patient history is included.

The patient history is analyzed with regards to significant factors.

The patient history is analyzed using outside sources and relevant data.

The patient history is thoroughly analyzed integrating excellent supportive resources, encompassing a holistic view of the patient’s condition, symptoms, emotional and immunologic status..

 

Diagnosis

A diagnosis is provided.

A diagnosis with supporting data is included.

A reasonable list of potential differential diagnoses is evaluated. The final diagnosis is supported.

A differential diagnosis, evaluative criteria to eliminate unlikely agents or causes, and a final diagnosis are explained and supported with data & sources.

 

Lab Tests

Inappropriate or inaccurate lab tests were used.

Only appropriate tests were used but insufficient tests were done.

All appropriate tests were done.

The report displays a good understanding of all the appropriate tests which were used in the identification.

 

Normal Flora and Specimen Evaluation

Normal flora was identified as pathogens.

Normal flora were ignored, specimen was evaluated superficially.

Appropriate normal flora were discussed& the specimen was properly evaluated.

Normal flora were discussed and identified if present in the culture. The specimen was thoroughly reviewed and evaluated with references.

 

Immune Status

No discussion of the immune status of the patient.

Incorrect or inadequate discussion of the patient immune status.

Discussion of the immune status of the patient in light of pathogenic capabilities of etiologic agent.

Discussion of the immune status of the patient and integration into the diagnosis and treatment including a flow chart of this particular agent with regards to this patient.

 

Patient Care Strategy and Treatment

A patient strategy and treatment are included.

The patient strategy and treatment included sensitivity results.

A viable holistic patient care strategy & treatment is suggested and based upon sensitivity results.

A long term, holistic patient care strategy and treatment is based on sensitivity results and considers various options and effectiveness is developed with references.

 

Prognosis

The report assumes a prognosis with no research.

A prognosis is hypothesized using researched information.

A prognosis is stated with relevant supporting references.

The prognosis shows integrated thinking and use of resources and data to justify conclusions and incorporation of immunologic information.

 

total

Add 2 points for correct identification

 

 Comments:                     

Date last updated  DATE \@ "M/d/yyyy" 11/21/2007 ©Janet Fulks

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Bakersfield College | Kern Community College District | Janet Fulks
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Date last updated 11/21/2007
©Janet Fulks