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Infection in acute renal failure
Abstract:
The results are reported of the incidence, severity, and description of infectious complications in 646 cases of acute renal failure (ARF). Infection was felt to represent an important cause of ARF in 34% of the cases. However, the frequency and extent of the infection varied according to the biologic classification. It was present constantly in postabortion ARF, was frequent in medical and in postoperative ARF, and was rare in traumatic and postpartum ARF. The renal lesions vary according to the cause of the infections. Staphylococcus septicemia, leptospiral infections, and rickettsial infections are the causes of interstitial nephritis; whereas gram-negative septicemia, probably via infectious shock, leads more readily to tubular lesions. Hemolytic septicemias most often cause tubular necrosis, although this is usually reversible. When the initial clinical picture is complicated by disseminated intravascular coagulopathy, bilateral cortical necrosis is a distinct possibility. During the established phase of ARF, infections are equally frequent, whether primary or secondary. The most frequent complications are septicemia and bacteremia--or local complications, most often pulmonary or urinary tract infections. The organisms are mainly Staphylococcus (often mephicillin-resistant) and gram-negative, usually E. coli. The most effective treatment is a combination of cephalothin and gentamicin. Pseudomonas infections are the most difficult to treat. The frequency of these serious infections and the difficulty with antibiotic therapy, often dangerous in renal insufficiency, stress the importance of preventive treatment of prophylactic measures. Infection was primarily responsible for 19% of the deaths in our series and may be also largely responsible for some of the persistent residual renal functional impairments.
Insights
Infections are a significant cause of acute renal failure (ARF), varying by ARF type. Prophylactic measures are crucial due to frequent, severe infections and challenging antibiotic treatments in ARF patients.
Area of Science:
- Nephrology
- Infectious Diseases
- Critical Care Medicine
Background:
- Infectious complications are a major concern in patients with acute renal failure (ARF).
- Understanding the patterns and impact of infections in ARF is vital for patient outcomes.
- Previous studies have highlighted the association between infection and ARF, but detailed analysis of incidence, severity, and specific causative agents is ongoing.
Purpose of the Study:
- To report the incidence, severity, and description of infectious complications in a large cohort of acute renal failure patients.
- To analyze the relationship between the etiology of ARF and the occurrence of infectious complications.
- To describe the types of renal lesions associated with different infectious agents and their clinical implications.
Main Methods:
- Retrospective analysis of 646 cases of acute renal failure.
- Classification of ARF based on etiology (postabortion, medical, postoperative, traumatic, postpartum).
- Detailed documentation of infectious complications, causative organisms, renal pathology, and patient outcomes.
Main Results:
- Infection was a primary cause of ARF in 34% of cases and a primary cause of death in 19%.
- Infection frequency varied by ARF type: constant in postabortion, frequent in medical/postoperative, rare in traumatic/postpartum.
- Specific organisms like Staphylococcus and gram-negative bacteria were common; Pseudomonas infections were difficult to treat. Renal lesions ranged from interstitial nephritis to tubular necrosis and cortical necrosis.
Conclusions:
- Infectious complications significantly contribute to ARF morbidity and mortality.
- Preventive strategies and prophylactic measures are essential due to the high frequency and severity of infections in ARF.
- Effective antibiotic management is challenging in renal insufficiency, underscoring the need for proactive infection control.