Which of the following would be the most likely effect on Staphylococcus aureus antibiotic resistance? 2022

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Overview Methicillin-resistant Staphylococcus aureus (MRSA) infection is caused by a type of staph bacteria that’s become resistant to many of the antibiotics used to treat ordinary staph infections. Nội dung chính When to see a doctor From Mayo Clinic to your inbox Antibiotic resistance Risk factors Risk factors for HA-MRSA Risk factors for CA-MRSA Complications Preventing HA-MRSA Preventing CA-MRSA Which of the following statements best explains how the genes for antibiotic resistance? Which of the following statements explains the ability of MRSA to evade existing drug therapies choose all answers that apply? Which of the following best describes the process responsible for the change in the percent of Tuskless female elephants in the Gorongosa National Park? Which if the following best explains the most likely method by which this antitumor drug works? Most MRSA infections occur in people who’ve been in hospitals or other health care settings, such as nursing homes and dialysis centers. When it occurs in these settings, it’s known as health care-associated MRSA (HA-MRSA). HA-MRSA infections usually are associated with invasive procedures or devices, such as surgeries, intravenous tubing or artificial joints. HA-MRSA can spread by health care workers touching people with unclean hands or people touching unclean surfaces. Another type of MRSA infection has occurred in the wider community — among healthy people. This form, community-associated MRSA (CA-MRSA), often begins as a painful skin boil. It’s usually spread by skin-to-skin contact. At-risk populations include groups such as high school wrestlers, child care workers and people who live in crowded conditions. Symptoms Staph skin infections, including MRSA, generally start as swollen, painful red bumps that might look like pimples or spider bites. The affected area might be: Warm to the touch Full of pus or other drainage Accompanied by a fever These red bumps can quickly turn into deep, painful boils (abscesses) that require surgical draining. Sometimes the bacteria remain confined to the skin. But they can also burrow deep into the body toàn thân, causing potentially life-threatening infections in bones, joints, surgical wounds, the bloodstream, heart valves and lungs. When to see a doctor Keep an eye on minor skin problems — pimples, insect bites, cuts and scrapes — especially in children. If wounds appear infected or are accompanied by a fever, see your doctor. From Mayo Clinic to your inbox Sign up for không lấy phí, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health. To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Causes Different varieties of Staphylococcus aureus bacteria, commonly called “staph,” exist. Staph bacteria are normally found on the skin or in the nose of about one-third of the population. The bacteria are generally harmless unless they enter the body toàn thân through a cut or other wound, and even then they usually cause only minor skin problems in healthy people. According to the Centers for Disease Control and Prevention, around 5% of the population chronically carries the type of staph bacteria known as MRSA. Antibiotic resistance MRSA is the result of decades of often unnecessary antibiotic use. For years, antibiotics have been prescribed for colds, flu and other viral infections that don’t respond to these drugs. Even when antibiotics are used appropriately, they contribute to the rise of drug-resistant bacteria because they don’t destroy every germ they target. Bacteria live on an evolutionary fast track, so germs that survive treatment with one antibiotic soon learn to resist others. Risk factors Because hospital and community strains of MRSA generally occur in different settings, the risk factors for the two strains differ. Risk factors for HA-MRSA Being hospitalized. MRSA remains a concern in hospitals, where it can attack those most vulnerable — older adults and people with weakened immune systems. Having an invasive medical device. Medical tubing — such as intravenous lines or urinary catheters — can provide a pathway for MRSA to travel into your body toàn thân. Residing in a long-term care facility. MRSA is prevalent in nursing homes. Carriers of MRSA have the ability to spread it, even if they’re not sick themselves. Risk factors for CA-MRSA Participating in contact sports. MRSA can spread easily through cuts and scrapes and skin-to-skin contact. Living in crowded or unsanitary conditions. MRSA outbreaks have occurred in military training camps, child care centers and jails. Men having sex with men. Men who have sex with men have a higher risk of developing MRSA infections. Having HIV infection. People with HIV have a higher risk of developing MRSA infections. Using illicit injected drugs. People who use illicit injected drugs have a higher risk of MRSA infections. Complications MRSA infections can resist the effects of many common antibiotics, so they’re more difficult to treat. This can allow the infections to spread and sometimes become life-threatening. MRSA infections may affect your: Bloodstream Lungs Heart Bones Joints Prevention Preventing HA-MRSA In the hospital, people who are infected or colonized with MRSA often are placed in isolation as a measure to prevent the spread of MRSA. Visitors and health care workers caring for people in isolation may need to wear protective garments. They also must follow strict hand hygiene procedures. For example, health care workers can help prevent HA-MRSA by washing their hands with soap and water or using hand sanitizer before and after each clinical appointment. Hospital rooms, surfaces and equipment, as well as laundry items, need to be properly disinfected and cleaned regularly. Preventing CA-MRSA Wash your hands. Careful hand washing remains your best defense against germs. Scrub hands briskly for at least 20 seconds. Carry a small bottle of hand sanitizer containing at least 60% alcohol for times when you don’t have access to soap and water. Keep wounds covered. Keep cuts and scrapes clean and covered with clean, dry bandages until they heal. The pus from infected sores may contain MRSA, and keeping wounds covered can help prevent the spread of the bacteria. Keep personal items personal. Avoid sharing personal items such as towels, sheets, razors, clothing and athletic equipment. MRSA spreads on infected objects as well as through direct contact. Shower after athletic games or practices. Shower immediately after each trò chơi or practice. Use soap and water. Don’t share towels. Sanitize linens. If you have a cut or sore, wash towels and bed linens in a washing machine set to the hottest water setting (with added bleach, if possible) and dry them in a hot dryer. Wash gym and athletic clothes after each wearing. Dec. 01, 2020 Which of the following statements best explains how the genes for antibiotic resistance? Which of the following statements best explains how the genes for antibiotic resistance can be transmitted between bacteria without the exchange of bacterial chromosomal DNA? The genes for antibiotic resistance are located on a plasmid that can be passed to neighboring bacteria. Which of the following statements explains the ability of MRSA to evade existing drug therapies choose all answers that apply? Which of the following best explains the ability of MRSA to evade existing drug therapies? MRSA exchange genetic material within their populations and have fast generation times. Resistant bacteria reproduce more frequently and pass along their resistance genes more often than non-resistant bacteria. Which of the following best describes the process responsible for the change in the percent of Tuskless female elephants in the Gorongosa National Park? Which of the following best describes the process responsible for the change in the percent of tuskless female elephants in the Gorongosa National Park population shown in Figure 1? Human hunting of elephants with tusks between 1977 and 1992. Which if the following best explains the most likely method by which this antitumor drug works? Which of the following best explains the most likely method by which this antitumor drug works? Trabectedin interferes with the duplication of DNA during interphase and thus prevents cancer cells from passing the G2 checkpoint.

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