Home
Articles
Q&A

What bacteria cause pyelonephritis?

Feb 28, 2023 Source: Cainiu Health
Dr. Zhao Xinju
Introduction
Pyelonephritis may be caused by Escherichia coli, alpha-hemolytic streptococcus, Klebsiella, Citrobacter, Streptococcus pneumoniae, etc. In addition, Staphylococcus aureus and Pseudomonas aeruginosa can also potentially cause pyelonephritis. If pyelonephritis occurs, patients may take medications such as cefixime capsules or minocycline hydrochloride capsules under the guidance of a physician.

Generally, pyelonephritis may be caused by Escherichia coli, alpha-hemolytic streptococcus, Klebsiella, Citrobacter, Streptococcus pneumoniae, and other pathogens. The specific analysis is as follows:

1. Escherichia coli

Some patients with pyelonephritis may develop the condition due to infection by Escherichia coli. This is because E. coli has fimbriae that enable it to adhere to the ureteral wall, potentially leading to pyelonephritis.

2. Alpha-hemolytic streptococcus

Alpha-hemolytic streptococcus, also known as group A hemolytic streptococcus or viridans streptococcus, may cause acute pyelonephritis. The bacteria can gradually ascend into the renal pelvis, resulting in infection.

3. Klebsiella

Klebsiella is a Gram-negative bacterium commonly found in the human intestinal tract and urinary tract. When this bacterium enters the urethra and multiplies in urine, it may travel further through the urinary tract into the bladder and renal pelvis, causing infection. Therefore, Klebsiella is one of the common pathogens responsible for urinary tract infections, including pyelonephritis.

4. Citrobacter

Citrobacter is another microorganism classified as a Gram-negative bacillus. It is widely present in natural environments such as soil and water. Although Citrobacter is typically a normal component of the intestinal flora, under certain conditions it can cause urinary tract infections, including pyelonephritis. This may occur due to the bacterial characteristics and pathogenic mechanisms of Citrobacter after it enters the urinary tract.

5. Streptococcus pneumoniae

In certain circumstances—such as in individuals with compromised immune function or structural abnormalities in the urinary tract—Streptococcus pneumoniae may enter the urinary system via ascending infection from the lower respiratory tract. In such cases, the bacteria can enter the urethra and bladder, subsequently infecting the renal pelvis and causing pyelonephritis.

In addition, other bacteria such as Staphylococcus aureus and Pseudomonas aeruginosa may also lead to pyelonephritis. If pyelonephritis occurs, patients can take medications such as cefixime capsules or minocycline hydrochloride capsules under medical guidance. Meanwhile, during treatment, patients should maintain good personal hygiene and drink plenty of water.


Related Articles

View All
Does fetal renal pelvis separation require examination after birth?
The renal pelvis is an internal structure of the kidney that collects urine and directs it toward the ureter. Renal pelvic dilation (or separation) refers to a certain degree of widening between the renal pelvis and the ureter, which can impair normal urine drainage. After birth, infants require examination primarily to assess the severity of the condition and determine whether further treatment is necessary.
avatar
Dr. Lv Aiming
View Full Answer
Is 13mm renal pelvis separation severe?
In general, the normal value for renal pelvis separation is less than 4 mm. A separation of 13 mm usually indicates moderate hydronephrosis, which is relatively serious. In summary, a 13 mm renal pelvis separation is considered a significant finding. If such test results are observed, it is essential to consult with a doctor for further evaluation and appropriate treatment based on the specific condition.
avatar
Dr. Zhao Xinju
View Full Answer
Is mild separation of the fetal bilateral renal pelvis a concern?
Mild separation of the fetal bilateral renal pelvis is generally not a cause for concern. Bilateral renal pelvic separation usually indicates the presence of fluid accumulation within the fetal kidneys. However, when the separation is mild, it means the fluid accumulation does not exceed one centimeter and is considered physiological hydronephrosis. This may result from the fetus temporarily holding urine and often resolves spontaneously or decreases as pregnancy progresses. It typically does not have a significant impact on the fetus's health.
avatar
Dr. Lv Aiming
View Full Answer
What is the most common pathogen causing pyelonephritis?
Generally speaking, there is no single most common causative agent of pyelonephritis. Common pathogens causing pyelonephritis include Escherichia coli, Klebsiella pneumoniae, Proteus species, Citrobacter species, and Pseudomonas aeruginosa. Escherichia coli is a Gram-negative bacterium normally found in the intestines, which can ascend through the urethra to the bladder, ureters, and kidneys, causing infection.
avatar
Dr. Yang Ziqi
View Full Answer
Where is the renal pelvis located?
The renal pelvis is a funnel-shaped, flattened sac formed by the convergence of the major calyces. In adults, the capacity of the renal pelvis is approximately 3–10 mL. It is located within the medial aspect of the renal sinus, with its surface projection situated at the angle formed between the twelfth rib and the lateral border of the erector spinae muscle. Diseases related to the renal pelvis—including pyelonephritis, kidney stones, and renal pelvic tumors—require prompt medical attention at a hospital when abnormal symptoms arise.
avatar
Dr. Zhao Xinju
View Full Answer
What foods can women with pyelonephritis eat?
Women with pyelonephritis can choose vegetables, fruits, and whole grains such as cucumber, tomatoes, apples, kiwifruit, oats, and corn. These foods are low in fat and rich in nutrients. However, food cannot provide the same effects as medication and does not treat pyelonephritis. Patients should seek prompt medical attention at a hospital and receive targeted treatment from a doctor.
avatar
Dr. Zhao Xinju
View Full Answer
Still have back pain after 14 days of intravenous treatment for pyelonephritis
After 14 days of intravenous treatment for pyelonephritis, if the patient still experiences back pain, it could be due to excessive physical activity or prolonged sitting during treatment, leading to lactic acid buildup, which is a normal physiological phenomenon that can be relieved through heat application, massage, and similar methods. It might also be related to pathological factors such as insufficient drug dosage or improper medication use, requiring targeted medical treatment under a doctor's guidance.
avatar
Dr. Zhao Xinju
View Full Answer
What does fetal bilateral renal pelvis separation mean?
In general, bilateral renal pelvis separation in a fetus refers to the presence of fluid accumulation (hydronephrosis) in both kidneys of the fetus. Patients with fetal bilateral renal pelvis separation exceeding one centimeter should seek medical evaluation promptly to determine the underlying cause and receive standardized treatment under a physician's guidance to avoid delaying the condition. During treatment, patients should ensure adequate rest, avoid excessive fatigue, and maintain a regular daily routine.
avatar
Dr. Zhao Xiaodong
View Full Answer
彩牛养生

Your trusted source for health information and wellness guidance.

Quick Links

Resources

Connect

© 2024 HealthPortal. All rights reserved.