Laboratory Experiments in Microbiology (11th Edition)
11th Edition
ISBN: 9780321994936
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 33, Problem 1CA
A 45-year-old HIV-positive woman using continuous intravenous antibiotic infusion to manage a kidney infection developed a
- What is your preliminary identification of the infecting organism?
- How might the antibiotic treatment have affected this patient?
- What do the findings suggest about the portal of entry for the infection?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A 65-year-old woman has a long-term central venous catheter for intravenous therapy. She develops fever and subsequently has multiple blood cultures positive for Staphylococcus epidermidis. All of the S. epidermidis isolates have the same colony morphology and antimicrobial susceptibility pattern, suggesting that they are the same strain. In what possible way do you think she has contracted the bacteria? Which link in the chain of infection has broken in this particular scenario and what will be your advice to avoid such infections?
A 40-year old man complained to the hospital of fever, chills and abdominal pain. Based on clinical history, the man has elevated ALT and AST enzyme assay with gradual hepatomegaly. The patient submitted stool sample and the following are the results:
Many cysts seen with 4 nuclei
Eccentric karyosome observed
Ingested RBC present
Bacteria (Moderate)
What possible parasite the patient has been infected with? Explain why.
What possible additional lab tests are necessary to prove the patient’s diagnosis? Explain why.
What is the possible diagnosis of the patient? Explain why.
Please refer to the given scenario below. What is the most appropriate sample to
be collected to isolate the causative agent of the infection? *
A 46-year-old male encountered a motor-vehicular accident (MVA) resulting in
multiple injuries on his anterior chest and left lower extremities. Aside from the injury, his
medical history was unremarkable. The patient was admitted for nine days and underwent
debridement and was discharged with an external fixator. However, during his admission, on
his 7m post-operative day, the wound was noted to have persistent purulent, bloody
discharge from drain site, which is highly suggestive of surgical site infection (SSI).
Whole blood
Debridement
Serum
Discharge from drain site
Chapter 33 Solutions
Laboratory Experiments in Microbiology (11th Edition)
Ch. 33 - What was the purpose of the balloon on the...Ch. 33 - Prob. 2QCh. 33 - Why are yeast colonies larger than bacterial...Ch. 33 - Prob. 4QCh. 33 - Why are antibiotics frequently added to Sabouraud...Ch. 33 - Prob. 2CTCh. 33 - Why werent pathogenic fungi used in this exercise?Ch. 33 - A 45-year-old HIV-positive woman using continuous...Ch. 33 - Prob. 2CA
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The patient was an 80-year-old female who 10 days previously had had a cystocele repair performed. At the time of the hospital admission, a urine culture was obtained and revealed >100,000 CFU/ml of an Escherichia coli strain that was susceptible to all antimicrobial agents against which it was tested. Postoperatively, she began a 7-day course of oral cephalexin. She was discharged after an uneventful postoperative course of 3 days. Ten days postoperatively, she presented with a 3-day history of diarrhea. The patient noted multiple watery, loose stools without blood, crampy abdominal pain, and vomiting. She presented with a temperature of 38.2 degrees C, pulse rate of 90/min, respiration rate of 20/min, and blood pressure of 116/53mm Hg. Her white blood cell count was normal, but a large number (53%) of immature polymorphonuclear cells were seen. Physical examination, electrolytes, liver enzymes, and lipase were all within normal limits. Cultures for Salmonella, Shigella, Yersinia,…arrow_forwardI AM TRYING TO IDENTIFY THIS UNKNOWN. IMAGE 1 HAS TWO PICTURE OF CATALASE TEST AND BLOOD AGAR TEST. I believe it is one of the following: 1) S. pyo. 2)S. agal . 3)S.pneu. 4)E. faecalis 5)S. aureus 6)S epi. 7)S. sapro. 8)M. luteus Please let me know which test will i need out of the table to justify your reason of picking up the unknown and also how that test justifies it? what characteristics of that test made you pick the unknown?arrow_forwardConsider that you are working as a laboratory technician in a local hospital and three patients at brought to the laboratory who present with the following: a)symptoms of toxic shock syndrome resulting from food poisoning b) symptoms of respiratory disease associated with the diphtheria toxin c) symptoms of a sexually transmitted disease resulting in the release of pulse from the genitals For each of these cases write the: 1. Name of the microorganisms responsible and 2. The morphological structure of the cells of this microorganismarrow_forward
- 1) In 2005 a typhoid outbreak in Delmas, South Africa, prompted the widespread testing of food and water sources to ascertain the origin of the outbreak. However, the origin of the outbreak could not be definitely tracesd. What could have been the possible reasons for this state of affairs? 2) A hypothetical culture media is being developed for the isolation of Salmonella Typhimurium. How will these unique characteristics be used to produce a culture media that is both selective and differential for the isolation of presumptive Salmonella Typhimurium?arrow_forwardOne laboratory method to detect for COVID-19 infection is via real time RT-PCR. The process starts with nasopharyngeal or oropharyngeal swabbing to get a sample. Explain concisely how this technique generally works and how it can be used for testing.arrow_forwardreview the case uploaded. in a practice scenario to identify unknown bacteria. a) in your own words write an introduction on how you identify unknown bacteriaarrow_forward
- Why is that bacterial slide agglutination technique important in diagnostic procedure?arrow_forwardWhat are the common pathogens isolated from stool samples? What is the difference between a coliform bacterium and a noncoliform enteric bacterium? What diagnostic test differentiates Proteus and Providencia species from other Enterobacteriaceae? How would you differentiate between serotypes of E. coli? Are the gram-negative enteric bacilli fastidious organisms? Would they survive well outside of the body? If so, what significance would this have in their transmission? Why is serotyping particularly important in Salmonella infections and typhoid fever?arrow_forwardAt autopsy, the most prominent findings were bronchopneumonia with focal organization and hemorrhage in the right lung. Stains of the lung tissue were negative by Gram, methenamine silver, and acid-fast methods, but Dieterle silver stains revealed short bacilli. Lung cultures yielded Gram-negative bacilli, which grew aerobically on buffered charcoal-yeast extract, but not on blood or chocolate agar. The organisms resembled Legionella, but failed to stain with immunofluorescence conjugates for Legionella pneumophila and multiple other species (L minded, L longbeachae, L gormanii, L dumoffi, L bozemanii). The organism was sent to the Centers for Disease Control and Prevention, where it was eventually identified as a new species of Legionella. What is the most probable source of this man's infection? Family member Water Food Insect Bioterrorism Dark-field microscopy may be used to diagnose spirochetes in which of the following scenarios? To detect spirochetes in the blood of a…arrow_forward
- The following pictures show the results of a Disk Diffusion Assay for different types of bacteria. For each bacteria, what antibiotic would you recommend be used on the patient? Explain your choice.arrow_forwardWhy is aseptic urine collection important when cultures are ordered? If you counted 20 colonies from a 0.01-ml inoculum of a 1:10 dilution of urine, how many organisms per milliliter of specimen would you report? Is this number significant? What can you learn from visual inspection of a urine specimen? How would you relate these to the microorganisms present in the sample? How are UTIs acquired/transmitted? Explain why E. coli is frequently implicated in cystitis in females.arrow_forward1- Why was the T4 and E.coli mixed together in top agar and then poured on the plate instead of just spreading the two together with a glass spreader on the plate? 2- When doing the titration and isolation of the T4 phage, E.coli diluted for you to 10e7 cells/ml. why was a diluted culture used? 3- After doing the titration of T4 phage, you find your dilution plates are all TNTC. how could this have happened? 4- Could you isolate phages that infect E.coli from raw sewerage? explain.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Microbiology for Surgical Technologists (MindTap ...BiologyISBN:9781111306663Author:Margaret Rodriguez, Paul PricePublisher:Cengage Learning
Microbiology for Surgical Technologists (MindTap ...
Biology
ISBN:9781111306663
Author:Margaret Rodriguez, Paul Price
Publisher:Cengage Learning
Serology 101: Testing for IgG and IgM antibodies; Author: Beckman Coulter Dx;https://www.youtube.com/watch?v=LtqKB-qpJrs;License: Standard youtube license