An untreated ruptured appendix causes fatal peritonitis through bacterial contamination of the abdominal cavity
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Medical literature establishes that an untreated ruptured appendix leads to peritonitis, a severe intra-abdominal infection that can result in lethal outcomes.
Secondary peritonitis is a life-threatening intra-abdominal condition arising from gastrointestinal perforation, chemical injury, or catheter-related infections, characterized by marked heterogeneity in presentation and progression. Major subtypes include stercoraceous peritonitis with fecal contamination, fibrinous peritonitis triggered by bile or gastric contents, peritoneal dialysis-associated infections, and pancreatitis-associated chemical peritonitis. Regardless of etiology, these conditions share profound local and systemic inflammatory responses, contributing to high morbidity and mortality. Biomarkers such as procalcitonin (PCT), interleukin-6 (IL-6), high mobility group box 1 (HMGB1), C-reactive protein (CRP), lipopolysaccharide (LPS), neutrophil-to-lymphocyte ratio (NLR), and neutrophil gelatinase-associated lipocalin (NGAL) have emerged as tools for early diagnosis, subtype stratification, and monitoring of therapeutic response. Their prognostic value is particularly relevant in peritoneal dialysis and postoperative intensive care. Advances in multi-omics, patient-derived organoids, peritoneum-on-chip models, and microbiota profiling are reshaping understanding of peritoneal pathophysiology, revealing cellular heterogeneity, immune-microenvironment interactions, and mechanisms of fibrotic remodeling. Key translational challenges include assessing whether omics-derived signatures can predict the need for early re-laparotomy or the risk of abdominal compartment syndrome. Integration of high-dimensional biomarker profiling with mechanistic and functional studies promises a new era of precision medicine in secondary peritonitis, enabling risk-adapted interventions, complication prevention, and tailored strategies to improve outcomes.
Mortality of preoperative peritonitis in newborn infants without intestinal obstruction. Within a period of 15 years 649 neonates were subjected to laparotomy; 60 (9%) of these patients died. Eighty-seven of the patients had a peritonitis already preoperatively without intestinal obstruction. Many of these were cases of ruptured omphaloceles or gastroschisis. In 17 infants a spontaneous intestinal perforation was the cause of the peritonitis. In 13 there was a preexisting meconium peritonitis. Seven children suffered from gangrenous intestine. Further causes for preoperative peritonitis were a complicated enteritis in 7 and a perforated appendix in 2 cases. Twenty-five or 29% of the children died. The highest mortality was found in children with ruptured omphalocele. It was 50% followed by gastroschisis with 36%. The mortality in patients with spontaneous intestinal perforation was rather similar, and the same high fatality rate was observed in infants with gangrenous intestine. In 28% of the children no cause for the peritonitis could be discovered.
Objectives: To evaluate the results of laparoscopic appendectomy for appendicitis peritonitis treatment.
Methods: Prospective study, including 37 patients diagnosed with appendicitis peritonitis based on clinical and subclinical symptoms and determined during surgery to have peritonitis due to ruptured appendix and treated with laparoscopic surgery from April 2022 to June 2023 at the Department of Digestive Surgery, Hue University of Medicine and Pharmacy Hospital.
Results: Patients with appendicitis peritonitis had an average age of 54.9 years. The females accounted for 58.6%. Normal BMI accounted for the highest rate at 56.8%, the rate of overweight and obesity was up to 29.7%; there were 62.2% of patients were assessed to have ASA index 2 or 3. The average time from onset to hospital admission was 30.8 ± 29.1 hours. Generalized peritonitis accounts for 24.3%. The average surgical time was 60.5 ± 17.2 minutes. Peritoneal drainage was placed in 45.9% of cases. There were no cases of complications during surgery or conversion to open surgery. The average time to return to fart after surgery was 20.2 ± 12 hours, the average time to use analgesic after surgery was 1.53 ± 0.7 hours. The average postoperative hospital stay was 5.3 ± 1.3 days. There were 2.7% of patients had complication of abdominal drainage site infection. Evaluating treatment results, there were 97.3% of patients achieved good results. There was no 30-day mortality.
Conclusions: Laparoscopic surgery to treat appendicitis peritonitis is a safe and effective method. Patients can recover well in a short time.
Key words: appendicitis peritonitis, laparoscopic appendectomy, acute appendicitis, abdominal drainage.
Peritoneal dialysis (PD) is a common renal replacement therapy for patients with end-stage renal disease (ESRD). Despite its benefits, PD-related peritonitis remains a severe complication, often associated with significant morbidity and mortality. Although most cases of PD-related peritonitis are due to touch contamination, intra-abdominal infections, such as appendicitis, are less common but can result in severe outcomes. We present a case of severe peritonitis secondary to perforated appendicitis in a patient with a dormant PD catheter. A 41-year-old male with ESRD, previously on PD, presented with a 36-hour history of fever, chills, nausea, and abdominal pain. Despite transitioning to hemodialysis, the patient had retained his PD catheter, which had not been used for months. On admission, the patient was septic with evidence of peritonitis. Blood cultures were positive for Escherichia coli, while PD catheter cultures were negative. An abdominal CT scan revealed a gangrenous perforated appendix. The patient underwent an emergency laparoscopic appendectomy and PD catheter removal, resulting in significant clinical improvement. Perforated appendicitis in ESRD patients with a PD catheter can result in severe peritonitis with life-threatening complications, including sepsis and cardiac events. This case underscores the importance of maintaining a high index of suspicion for intra-abdominal causes of peritonitis in PD patients, even when the PD catheter is dormant. Timely diagnosis, empiric antibiotic therapy, and prompt surgical management are essential to reduce mortality in these patients.
An otherwise healthy 24-year-old male was sent to the emergency department by an urgent care center with remote concern for appendicitis. The patient was afebrile, eating and drinking normally and non-leukocytotic, but because of mild tenderness to palpation in the right lower quadrant of his abdomen and symptomatology persisting for seven days computed tomography was obtained which revealed a ruptured appendix and localized peritonitis. The patient was admitted to the acute care emergency surgery service and managed non-operatively with antibiotics.
Subhepatic appendicitis.
Intestinal malrotation is a developmental anomaly that occasionally causes an unusual array of symptoms in adults. The delay in diagnosis that is common in patients with malrotation frequently results in a ruptured appendix. Appendicitis should be considered when characteristic signs and symptoms are present, even if the location of abdominal pain is atypical.
Published in American family physician (1989)
A significant number of complications in acute appendicitis develop due to delayed or even missed diagnosis. Potentially every patient can be affected due to a distinct feature of appendicitis--the rapidity with which the inflammation passes through the different stages. Even after a few hours, gangrenous appendicitis with impending overt perforation can have developed. In many cases, the term complicated appendicitis may be less significant than implied because, e.g., the rapidly developed perforation can be treated by appendectomy, which rarely presents a surgical challenge. However, every perforation of a hollow viscus in the abdomen leads to peritonitis of different degrees, which untreated can end lethally. The often cited statement of Dieu la Foy from the last but one century "no patient has to die from appendicitis" remains a surgical dream not quite fulfilled. Occasionally even today, patients with comorbidity die from the sequelae of appendicitis, i.e., high-risk groups including the very young and the very old and immunosuppressed patients. These patients should receive special attention when the diagnosis of appendicitis is considered. By definition, complicated appendicitis includes perforation of the appendix, empyema or abscess formation, and finally fecal peritonitis. The surgical procedure chosen and when to add supportive measures will depend on the specific complication present. Early or immediate appendectomy, i.e., the urgent indication to operate, is a generally accepted concept in the therapy of acute appendicitis. Even in complicated cases, the aim is just one operative procedure or if need be only the application of antibiotics.
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