How can a gram stain be medically useful




















Ask your doctor for more information about the specific risks involved in your case. The main benefit of a gram stain is that it helps your doctor learn if you have a bacterial infection, and it determines what type of bacteria are causing it. This can help your doctor determine an effective treatment plan.

Gram-positive bacteria are bacteria with thick cell walls. In a Gram stain test, these organisms yield a positive result. Muscular dystrophy is a group of inherited diseases that damage and weaken your muscles over time.

This damage and weakness is due to the lack of a…. Boils are caused by bacteria building up in a hair follicle and pushing up to the surface of the skin. Recurring boils happen for a number of reasons….

Certain E. Learn about other bacteria and parasites like pinworms and how to prevent…. Shigellosis is a bacterial infection that affects the digestive system. The Shigella bacterium is spread through contact with contaminated feces.

As a boil on the skin matures, it typically develops a visible core of pus. Learn when to see a doctor, how to get the core out of a boil at home, and…. Q fever, also called query fever, is a bacterial infection caused by bacteria commonly found in cattle, sheep, and goats. Humans typically get Q fever…. A doctor typically orders a sputum stain to determine if a person has tuberculosis TB or another type of mycobacterial infection.

Brucellosis is often spread when people eat contaminated food, which can include raw meat and unpasteurized milk. Health Conditions Discover Plan Connect.

People are Escherichia coli E. Haemophilus influenzae infections Haemophilus influenzae Infections Haemophilus influenzae are gram-negative bacteria that can cause infection in the respiratory tract, which can spread to other organs.

Infection is spread through sneezing, coughing, or touching Klebsiella infections Klebsiella, Enterobacter, and Serratia Infections Klebsiella, Enterobacter, and Serratia are closely related gram-negative bacteria that occasionally infect the urinary tract or respiratory tract of people in hospitals or in long-term care Legionnaires' disease Legionella Infections Legionella infections are caused by the gram-negative bacteria Legionella pneumophila and most often affect the lungs, causing pneumonia and flu-like symptoms.

The infection is often acquired Pertussis Pertussis Pertussis is a highly contagious infection caused by the gram-negative bacteria Bordetella pertussis, which results in fits of coughing that usually end in a prolonged, high-pitched, deeply The bacteria are spread mainly by the rat flea. Pseudomonas infections Pseudomonas Infections Any of several types of the gram-negative bacteria Pseudomonas, especially Pseudomonas aeruginosa, can infect different parts of the body, particularly in people who have serious medical problems Salmonella Salmonella Infections The gram-negative bacteria Salmonella typically cause diarrhea and sometimes cause a more serious infection, typhoid fever.

People are usually infected when they eat contaminated food, such Shigellosis Shigellosis Shigellosis is infection by the gram-negative bacteria Shigella. It results in watery diarrhea or dysentery the frequent and often painful passage of small amounts of stool that contains blood Tularemia Tularemia Tularemia is infection that is caused by the gram-negative bacteria Francisella tularensis, which is acquired when people have direct contact with infected wild animals, usually rabbits, or Typhoid fever Typhoid Fever Typhoid fever is caused by certain types of the gram-negative bacteria Salmonella.

It typically causes a high fever and abdominal pain. Typhoid fever can be spread by consuming food or water Gram-negative bacteria can cause many serious infections, such as pneumonia Overview of Pneumonia Pneumonia is an infection of the small air sacs of the lungs alveoli and the tissues around them.

Pneumonia is one of the most common causes of death worldwide. Often, pneumonia is the final Severe abdominal pain that comes on quickly, however, almost always indicates a significant problem. A normal result means that no bacteria or only "friendly" bacteria were found. Some types of bacteria normally live in certain areas of the body, such as the intestines. Bacteria normally don't live in other areas, such as the brain or spinal fluid. Abnormal results may indicate an infection.

You will need further tests, such as a culture, to find out more about the infection. Your risks depend on the method used to remove tissue or fluid from your body. You may have no risk at all. Other risks are rare, but may include:. Specimen collection and handling for diagnosis of infectious diseases. St Louis, MO: Elsevier; chap Medical bacteriology. Updated by: Linda J. Editorial team. Gram stain. How the Test is Performed.



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