Major Online Drug Information Resources
by Cindy Schmidt, M.D., M.L.S.
Created July 2014
Revised June 2019
___________
Instructions:
http://list.unmc.edu/gots/tutorial/onlinedruginfo
All of the online, drug information resources licensed by the McGoogan library provide drug monographs. Each monograph summarizes the most important information concerning a drug.
While providing much of the same information, each of the resources has specific strengths and/or provides tools that make it valuable.
When you have completed this tutorial, you will have used some of these unique tools. Specifically, you will:
For the purposes of this tutorial, pretend that you are a fourth year pharmacy student completing a critical care rotation.
Your clinical team is caring for Mrs. Jill Dilworth, a 60 year-old female. Mrs. Dilworth has just been admitted with peritonitis (inflammation of the lining of the abdominal cavity) and septic shock (low blood pressure and high pulse related to severe infection). The team is worried that circulatory collapse is imminent.
The third-year medical resident wants to treat Mrs. Dilworth
a. with two antibiotics--
clindamycin phosphate
--and--
aztreonam
b. as an admixture
c. diluted in either --
dextran 40/10% normal saline solution
--OR in--
normal Saline.
Will this admixture be compatible?
Which resource will you use to address this question?
A table summarizing the features of the major, online drug information resources available through the McGoogan Library is shown in the window to the right.
1. Which of UNMC's online drug information resources can be used to produce custom IV compatibility reports?
Click here to open McGoogan Library's homepage in the window to the right. You may have to scroll to the right to see the buttons on the right-hand side of the Library's homepage.
After you reach the LexiComp homepage,
You want information on the compatibility of the drugs --
Although you are interested in diluting the drugs in specific solutions, you do not need to enter the solution names here. Entering solutions names here is really only useful if you want information about the solubility of a single drug in a particular solution.
A "Compatibility Chart" will appear. Note the definitions of the icons that appear at the upper left of this chart.
The third-year resident wants to use 10 mg/ml aztreonam and 3 mg/ml Clindamycin Phosphate. Find the entries for these concentrations.
He wants to deliver these drug concentrations either in--
Dextran 40 /10% normal saline
(note:dextran and dextrose are not the same thing)
-- or in --
normal saline.
Have the desired drug concentrations been tested for compatibility in either of these solutions?
2. According to Lexi-Comp's Trissel's IV-Check, 10 mg/ml azteonam and 3 mg/ml clindamycin phosphate are compatible in
The resident wants you to show him the journal article that reported the results of the compatibility testing.
When you find the line for 10 mg/ml aztreonam and 3 mg/ml Clindamycin Phosphate in one of the desired solutions, click on either the "Study" link or the "Compatible" link for that combination. You will be taken to more details about the compatibility test.
If you're used to reading journal article citations, you can skip to the next page.
Here's another citation in the same style as the citation you're viewing.
Marble DA, Bosso JA, Townsend RJ, "Stability of clindamycin phosphate with aztreonam, ceftazidime sodium, ceftriaxone sodium, or piperacillin sodium in two intravenous solutions", Am J Hosp Pharm, 1986; Volume 43:pp. 1732-6.
43(7):1732-6.
-- where the volume number is 43, the issue number is 7 (often the July issue), and the page numbers are 1732 - 1736.
3. What is the name of the journal (or abbreviated name of the journal) that published the relevant study (10 mg/ml aztreonam and 3mg/ml clindamycin phosphate in one of the desired solutions)?
It's always best to check at least two sources when answering a clinical question. What if a typing error appears in one of the resources?
Clinical Pharmacology is the other UNMC-licensed resource that provides a custom, IV compatibility report tool.
To access Clinical Pharmacology:
Check the "Legend" at the lower left for icon definitions.
4. According to Clinical Pharmacology which diluent has been tested with 10 mg/ml aztreonam and 3 mg/ml clindamycin?
Mrs. Dilworth is given aztreonam and clindamycin within 30 minutes of her admission to the ER.
Just two hours after admission, she is recovering from successful surgery to remove an abscessed appendix.
Mrs. Dilworth tells you that she has bipolar disorder (manic-depressive disorder). She says that she was a bit manic during the week prior to admission. The mild mania may have made it easier to ignore some mild symptoms of appendicitis. She had stopped taking risperidone because of the high cost. Her health insurance only covers a small part of the cost of risperidone.
Mrs. Dilworth's nurses are concerned about her current mental state. Mrs. Dilworth seems quite manic to them, and they're worried that she may decide that she doesn't need her IV's or may decide to leave the hospital before she has adequately recovered.
5. Which of the following resources provides drug price information?
The third-year resident orders risperidone for Mrs. Dilworth. You wonder how much risperidone actually costs.
Drug price information is available from Lexi-Drugs.
(To remember this think of Lexi-Drug$.)
risperidone
-- in the Lexi-Comp search box.
6. Which of the price ranges below includes the price for a single 3 mg RisperDAL oral tablet?
7. Which of the price ranges below includes the price for a single, 3 mg risperDONE oral tablet? (RisperDONE is the generic version of the brand name product RisperDAL)
After Mrs. Dilworth regained consciousness, she began to complain of nausea. Ondansetron administered by IV push through a separate IV line was prescribed for the nausea. Ondansetron is an anti-emetic/anti-nausea drug.
A day after odansetron administration was initiated Mrs. Dilworth begins to complain of severe itching (pruritus). The clinical team asks you whether the pruritus could be an adverse effect of one or more of Mrs. Dilworth's medications.
Which resource provides a custom adverse effects report tool?
Please, click this link to open the table summarizing the features of the major, online drug information resources available through the McGoogan Library. Adjust the position of the new window so that you can still see the tutorial instruction screen.
8. Which of the following resources, includes a custom "adverse effect report" tool (AE report tool)?
To remember that Clinical Pharmacology provides custom, adverse reaction reports, think of this:
To create the "Adverse Reaction" report that you need:
clindamycin
ondansetron
pruritus
9. According to the adverse reactions report, which of the patients medications can cause pruritus?
While three of the drugs the patient is receiving might cause the itching, the fact that the itching started soon after initiation of the ondansetron makes you suspect that the ondansetron is responsible in this patient. Also, the fact that Mrs. Dilworth has been taking risperidone for a long time makes this medication a less likely culprit.
One of the team members asks whether systemic clindamycin causes itching or whether this adverse effect is only seen after topical administration.
10. Clindamycin is sometimes applied directly to the skin. If Clindamycin can cause itching/pruritus, which forms of administration are associated with this adverse effect
By the third hospital day, Mrs. Dilworth is receiving --
aztreonam (an antibiotic) clindamycin phosphate (an antibiotic) ondansetron (an anti-emetic/anti-nausea drug), risperidone (an anti-psychotic drug given to this patient because of her history of bipolar disease ), and loratadine (for itching).
The patient has a fainting episode and an EKG is ordered. Heart beat irregularities are noted on the EKG. The patient team wonders whether a drug interaction might be causing the heart beat irregularity.
11a. Which of McGoogan's Online Resources can produce a custom "drug interaction" report?
11b. Which of McGoogan's resources includes a drug interaction report in consumer-oriented language?
To remember that Clinical Pharmacology provides custom consumer-level interaction and adverse reaction reports, think of
aztreonam (solution for injection)
clindamycin phosphate (solution for injection)
risperidone (oral tablet)
ondansetron hydrochoride (solution for injection)
loratadine (oral tablet)
You can change the options (e.g. consumer vs. professional) later by clicking the desired option and hitting the "Run Report" button again.
12. Which of the patient's drugs can interact to cause changes in heart rhythm?
A member of Mrs. Dilworth's physician team visits her to let her know that they are going to discontinue the ondansetron. At the time of this visit he notices that she seems a bit jaundiced (the whites of her eyes are slightly yellow). He begins investigating what might be causing the mild jaundice.
An adverse reaction report in Clinical Pharmacology shows that all of Mrs. Dilworth's meds except ondansetron can be associated with jaundice. However, Mrs. Dilworth's liver tests and jaundice have actually decreased by the next day. Mrs. Dilworth's resident asks if its possible that the discontinued ondansetron might have been causing the slight jaundice.
Please, click this link to open the table summarizing the features of the major, online drug information resources available through the McGoogan Library.
13. Which drug information resource is most likely to contain information about a rare adverse effect not included in a Clinical Pharmacology report?
It my help you remember that AHFS DI can provide pearls of information if you remember the graphic shown below.
To reach the electronic version of the AHFS DI:
You may have to scroll to the right to see the buttons on the right-hand side of the Library's homepage.
To find the AHFS DI "Ondansetron" monograph:
Ondansetron
To look for any mention of jaundice:
Jaundice
AHFS DI frequently cites conference abstracts and personal communications and, thus, provides information that is not available through other sources.
Points to remember:
1. Clinical Pharmacology and LexiComp (via LexiComp or via UpToDate) are the only two resources UNMC provides that include custom report tools.
2. Both Clinical Pharmacology and LexiComp via LexiComp include I.V. Compatibility report tools
3. Both Clinical Pharmacology and LexiComp include Drug Interaction report tools, but only Clinical Pharmacology can provide interaction reports in consumer language.
4. Only Clinical Pharmacology includes a custom adverse reactions report tool.
5. LexiDrugs provides price information
Think: LexiDrug$
6. AHFS Drug Information provides very thorough monographs that often reference conference abstracts and personal communications. -- these may provide pearls of info not available elsewhere.
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