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Pseudomonas infection

Pseudomonas infection is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Pseudomonas infection rather than just read about it. In short: A Pseudomonas infection is a disease caused by one of the species of the bacterial genus Pseudomonas. Pseudomonas aeruginosa is an opportunistic human pathogen most commonly infecting immunocompromised patients, such as those with cancer, diabetes, cystic fibrosis, severe burns, AIDS, or people who are very young or elderly.

Pseudomonas infection — main illustration
Pseudomonas infection — illustration

Key takeaways

  • Pseudomonas infection belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Pseudomonas infection to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Pseudomonas infection from memory before moving on to harder problems.

Reference excerpt

A Pseudomonas infection is a disease caused by one of the species of the bacterial genus Pseudomonas. Pseudomonas aeruginosa is an opportunistic human pathogen most commonly infecting immunocompromised patients, such as those with cancer, diabetes, cystic fibrosis, severe burns, AIDS, or people who are very young or elderly. Infection can affect many parts of the body, but infections typically target the respiratory tract, the renal system, and the gastrointestinal system or it can cause blood infection. Symptoms may include bacterial pneumonia, severe coughing, congestion, urinary tract infection (UTI), pain in the ears and eyes, joint pain, neck or back pain, headache, diarrhea, a rash which can include pimples filled with pus, and/or swelling in the eyes. Complications include pneumonia, gangrene, necrotizing fasciitis, compartment syndrome, necrosis, loss of an extremity, and sepsis, which may lead to septic shock and death. In a surveillance study between 1986 and 1989, P. aeruginosa was the third leading cause of all nosocomial (hospital-acquired) infections, and specifically the number one leading cause of hospital-acquired pneumonia and third leading cause of hospital-acquired UTI. Treatment of such infections can be difficult due to multiple antibiotic resistance, and in the United States, there was an increase in MDRPA (Multidrug-resistant Pseudomonas aeruginosa) resistant to ceftazidime, ciprofloxacin, and aminoglycosides, from 0.9% in 1994 to 5.6% in 2002. P. oryzihabitans can also be a human pathogen, although infections are rare. It can cause peritonitis, endophthalmitis, sepsis and bacteremia. Similar symptoms, although also very rare can be seen by infections of P. luteola. P. plecoglossicida is a pathogenic species in fish, causing hemorrhagic ascites in the ayu (Plecoglossus altivelis). P. anguilliseptica is also a fish pathogen. Due to their hemolytic activity, even non-pathogenic species of Pseudomonas can occasionally become a problem in clinical settings, where they have been known to infect blood transfusions.

See also

References

External links

Illustrations

Pseudomonas infection illustration
Pseudomonas infection: Example of a workup algorithm of possible bacterial infection in cases with no specifically requested targets (non-bacteria, mycobacteria, etc.), with most common situations and agents seen in a New England community hospital setting. As seen in the bottom right quadrant, Pseudomonas infection may be identified by MALDI-TOF if such a machine is available. Otherwise, it usually shows relatively characteristic growth on agar plates.
Example of a workup algorithm of possible bacterial infection in cases with no specifically requested targets (non-bacteria, mycobacteria, etc.), with most common situations and agents seen in a New England community hospital setting. As seen in the bottom right quadrant, Pseudomonas infection may be identified by MALDI-TOF if such a machine is available. Otherwise, it usually shows relatively characteristic growth on agar plates.

Worked examples

Example 1 — a first encounter with Pseudomonas infection

Start with the simplest possible case. Write down what Pseudomonas infection claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Pseudomonas infection before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Pseudomonas infection ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Pseudomonas infection

In research
Pseudomonas infection appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Pseudomonas infection in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Pseudomonas infection is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bacterial diseases, Symptoms, so understanding it makes those chapters shorter.
In everyday life
Look for Pseudomonas infection outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Pseudomonas infection in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Pseudomonas infection means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Pseudomonas infection out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pseudomonas infection in simple terms?

A Pseudomonas infection is a disease caused by one of the species of the bacterial genus Pseudomonas. Pseudomonas aeruginosa is an opportunistic human pathogen most commonly infecting immunocompromised patients, such as those with cancer, diabetes, cystic fibrosis, severe burns, AIDS, or people who…

Why does Pseudomonas infection matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Pseudomonas infection?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Pseudomonas infection.

Tags

  • Bacterial diseases
  • Symptoms

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