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Abdominal paracentesis is a common procedure performed for both diagnostic and therapeutic purposes in patients with chronic liver disease and ascites. This review aims to provide an overview of the current evidence on the risk of bleeding associated with abdominal paracentesis. Electronic search was performed using PubMed, MEDLINE, and Ovid EMBASE from inception to 29 October 2023. Studies were included if they examined the risk of bleeding post-abdominal paracentesis or the efficacy of interventions to reduce bleeding in patients with chronic liver disease. Random-effects model was used to calculate the pooled proportions of bleeding events following abdominal paracentesis. Heterogeneity was determined by I 2, τ2 statistics, and P-value. Eight studies were included for review. Six studies reported incident events of post-abdominal paracentesis bleeding. Pooled proportion of bleeding events following abdominal paracentesis was 0.32% (95% CI: 0.15-0.69%). The mean values for pre-procedural INR and platelet count of patients in these studies ranged between 1.4 and 2.0, and 50 and 153 × 109/L, respectively. The highest recorded INR was 8.7, and the lowest platelet count was 19 × 109/L. Major bleeding after abdominal paracentesis occurred in 0-0.97% of the study cohorts. Two studies demonstrated that the use of thromboelastography (TEG) before paracentesis in patients with chronic liver disease identified those at risk of procedure-related bleeding and reduced transfusion requirements. The overall risk of major bleeding after abdominal paracentesis is low in patients with chronic liver disease and coagulopathy. TEG may be used to predict bleeding risk and guide transfusion requirements.

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Biliary ascites due to spontaneous biliary duct perforation is a rare case presentation usually seen in the paediatric age group of 6-36 months. We are presenting the case of a 14-month-old baby with abdominal distention associated with abdominal pain, vomiting, fever, and a history of no passage of stools. Upon examination, the abdomen was tense and tender. On radiological investigations, gross free fluid was present in the abdominal cavity along with bowel obstruction and partial situs inversus of the spleen and stomach. The bowel obstruction was relieved by rectal stimulation, after which oral feeds were well tolerated. Bilious fluid was found on diagnostic paracentesis, confirming the diagnosis. The patient was managed further by broad-spectrum antibiotics and drainage of the free fluid. The management ranges from conservative treatment to Roux-en-Y anastomosis. A non-surgical diagnosis is uncommonly seen and helps improve the patient's prognosis if detected early. This case report highlights the importance of early diagnosis and non-surgical treatment modality in critical patients.

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BACKGROUND: Non-surgical methods such as percutaneous drainage are crucial for the treatment of patients with severe acute pancreatitis (SAP). However, there is still an ongoing debate regarding the optimal timing for abdominal paracentesis catheter placement and drainage. AIM: To explore the influence of different timing for abdominal paracentesis catheter placement and drainage in SAP complicated by intra-abdominal fluid accumulation. METHODS: Using a retrospective approach, 184 cases of SAP complicated by intra-abdominal fluid accumulation were enrolled and categorized into three groups based on the timing of catheter placement: group A (catheter placement within 2 d of symptom onset, n = 89), group B (catheter placement between days 3 and 5 after symptom onset, n = 55), and group C (catheter placement between days 6 and 7 after symptom onset, n = 40). The differences in progression rate, mortality rate, and the number of cases with organ dysfunction were compared among the three groups. RESULTS: The progression rate of group A was significantly lower than those in groups B and groups C (2.25% vs 21.82% and 32.50%, P < 0.05). Further, the proportion of patients with at least one organ dysfunction in group A was significantly lower than those in groups B and groups C (41.57% vs 70.91% and 75.00%, P < 0.05). The mortality rates in group A, group B, and group C were similar (P > 0.05). At postoperative day 3, the levels of C-reactive protein (55.41 ± 19.32 mg/L vs 82.25 ± 20.41 mg/L and 88.65 ± 19.14 mg/L, P < 0.05), procalcitonin (1.36 ± 0.51 ng/mL vs 3.20 ± 0.97 ng/mL and 3.41 ± 0.98 ng/mL, P < 0.05), tumor necrosis factor-alpha (15.12 ± 6.63 pg/L vs 22.26 ± 9.96 pg/L and 23.39 ± 9.12 pg/L, P < 0.05), interleukin-6 (332.14 ± 90.16 ng/L vs 412.20 ± 88.50 ng/L and 420.08 ± 87.65ng/L, P < 0.05), interleukin-8 (415.54 ± 68.43 ng/L vs 505.80 ± 66.90 ng/L and 510.43 ± 68.23ng/L, P < 0.05) and serum amyloid A (270.06 ± 78.49 mg/L vs 344.41 ± 81.96 mg/L and 350.60 ± 80.42 mg/L, P < 0.05) were significantly lower in group A compared to those in groups B and group C. The length of hospital stay in group A was significantly lower than those in groups B and group C (24.50 ± 4.16 d vs 35.54 ± 6.62 d and 38.89 ± 7.10 d, P < 0.05). The hospitalization expenses in group A were also significantly lower than those in groups B and groups C [2.70 (1.20, 3.55) ten-thousand-yuan vs 5.50 (2.98, 7.12) ten-thousand-yuan and 6.00 (3.10, 8.05) ten-thousand-yuan, P < 0.05). The incidence of complications in group A was markedly lower than that in group C (5.62% vs 25.00%, P < 0.05), and similar to group B (P > 0.05). CONCLUSION: Percutaneous catheter drainage for the treatment of SAP complicated by intra-abdominal fluid accumulation is most effective when performed within 2 d of onset.

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Abdominal paracentesis is a standard intervention for symptom relief in patients with ascites; however, there is no established agreement regarding the optimal speed of ascites drainage. This paper presents three cases of rapid manual drainage of ascites (RMDA) conducted during home visits: a 72 year-old male with intractable cirrhosis, a 73 year-old male with malignant ascites secondary to cancer of the pancreatic tail, and a 54 year-old male suffering from malignant ascites due to pancreatic tail cancer with hepatic metastases. Drainage volumes ranged from 1.4 to 3 liters, with procedures taking between 12 to 14 minutes. Post-procedure systolic blood pressures were maintained above 90 mmHg at immediate, 2 (±1) hours, and 24 (±12) hours following the procedure in all cases. No severe adverse events were reported. RMDA may offer a reduced procedural time in the home visit context, lessening patient discomfort and healthcare provider costs. Further studies are needed to evaluate the safety of RMDA in home care settings.

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BACKGROUND: We sought to evaluate the effect of early short-term abdominal paracentesis drainage (APD) in moderately severe and severe acute pancreatitis (MSAP/SAP) with pelvic ascites. METHODS: A total of 135 MSAP/SAP patients with early pelvic ascites were divided into the Short-term APD group (57 patients) and the Non-APD group (78 patients). The effects, complications, and prognosis of short-term APD patients were evaluated. RESULTS: The baseline characteristics in the two groups were similar. The target days of intra-abdominal hypertension relief, half-dose enteral nutrition, duration of mechanical ventilation, length of intensive care unit stay (in days) and total hospitalization (also in days) were all lower in the Short-term APD group than in the Non-APD group (P = 0.002, 0.009, 0.004, 0.006 and 0.019), while the white blood cell count and serum C-reaction protein level decreased significantly more quickly (P < 0.01 and P < 0.05), and the prevalence of intra-abdominal infection was also significantly lower (P = 0.014) in the former than the latter. No complications occurred in early APD patients, and the microbial cultures of pelvic ascites were all negative. In addition, patients with early APD presented fewer cases of residual wall-off necrosis or fluid collection (P = 0.008) at discharge and had a lower incidence of rehospitalization and percutaneous catheter drainage and/or necrosectomy (P = 0.017 and 0.009). CONCLUSIONS: For MSAP/SAP patients with pelvic ascites, the early short-term APD is feasible and safe to perform, and it can decrease clinical symptoms, reduce intra-abdominal infection and shorten the hospital stay. It may also reduce the incidence of rehospitalization and surgical intervention.

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Chylous ascites is a milky-appearing, triglyceride-rich fluid within the abdominal cavity. It is a rare finding that arises from the disruption of the lymphatic system and can be caused by a wide variety of pathologies. Here, we present a diagnostically challenging case of chylous ascites. In this article, we discuss the pathophysiology and various etiologies of chylous ascites, explore the diagnostic tools available, and highlight the management strategies implemented in this rare finding.

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Analysis of ascitic fluid can offer useful information in developing and supporting a differential diagnosis. As one of the most prevalent complications in patients with cirrhosis, ascitic fluid aids in differentiating a benign condition from malignancy. Both the gross appearance of the ascitic fluid, along with fluid analysis, play a major role in diagnosis. Here, we discuss a patient with liver cirrhosis, esophageal varices, hepatitis C, and alcohol abuse, who had a paracentesis performed, which revealed a turbid, viscous, orange-colored ascitic fluid that has not been documented in literature. Ascitic fluid is routinely analyzed based on gross appearance, cell count, and serum ascites albumin gradient (SAAG) score. An appearance of turbidity or cloudiness has commonly suggested an inflammatory process. In our case, fluid analysis revealed a red blood cell count of 24 250/mcL, further suggesting inflammation. However, it also revealed an insignificant number of inflammatory cells, with a total nucleated cell count of 14/mcL. This rich-orange color has posed a challenge in classification and diagnosis of the underlying cause of ascites, with one classification system suggesting inflammation, while another suggesting portal hypertension. Furthermore, we have traditionally relied on the SAAG score to aid in determining portal hypertension as an underlying cause of ascites. With a 96.7% accuracy rate, the SAAG score incorrectly diagnosed portal hypertension in this patient. In this article, we aim to explore how this rare, orange-colored ascitic fluid has challenged the traditional classification system of ascites.

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BACKGROUND: Intra-abdominal hypertension (IAH) is an important risk factor for organ dysfunction, and it occurs in the early phase of severe acute pancreatitis (SAP). We have reported a novel step-up approach and shown the benefit of performing abdominal paracentesis drainage (APD) ahead of percutaneous catheter drainage (PCD) when treating Patients with SAP with fluid collections. This study aimed to evaluate the efficacy of APD in Patients with SAP complicated with IAH in the early phase. METHODS: In the present study, 206 AP patients complicated with IAH in the early phase were enrolled in hospital between June 2017 and December 2020. The patients were divided into two groups: 109 underwent APD (APD group) and 97 were managed without APD (non-APD group). We retrospectively compared the outcomes of the APD and non-APD groups for IAH treatment. The parameters including mortality, infection, organ failure, inflammatory factors, indications for further interventions, and drainage-related complications were observed. RESULTS: The demographic data and severity scores of the two groups were comparable. The mortality rate was lower in the APD group (3.7%) than in the non-APD group (8.2%). Compared with the non-APD group, the intra-abdominal pressure and laboratory parameters of the APD group decreased more rapidly, and the mean number of failed organs was lower. However, there was no significant difference in incidence of infections between the two groups. CONCLUSIONS: Application of APD is beneficial to AP patients. It significantly attenuated inflammation injury, avoided further interventions, and reduced multiple organ failure.

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BACKGROUND:  Paracentesis is currently performed by interventional radiologists (IR) rather than gastroenterologists/hepatologists or internists. In this model of care, there is usually no evaluation of patients' renal function or adjustment of their medications at the time of paracentesis. The objectives of this study were to analyze hospital utilization and cirrhosis complications within six months of index outpatient paracentesis by IR and to identify potential areas of improvement in care. METHODS: This is a retrospective study of patients with cirrhosis and ascites who underwent outpatient paracentesis by IR between October 15, 2015, and October 15, 2018, at a tertiary academic medical center. We collected demographics, data on cirrhosis etiology/complications, laboratory tests, provider notes, outpatient paracentesis dates, emergency department (ED) visits, hospitalizations, and ICU admissions within the following six months post index paracentesis. Associations between categorical predictors and clinical outcomes were analyzed using the chi-square test. Associations between quantitative predictors and clinical outcomes were analyzed using the Wilcoxon rank sum test. RESULTS: Our study included 69 unique patients who had at least one outpatient encounter for paracentesis by IR in the study period. Most patients were men (71%), had alcohol-related cirrhosis as primary etiology (53.6%), an average age of 60 years, and an average Model for End-Stage Liver Disease-sodium (MELDNa) score at baseline of 16. Within six months from index paracentesis, 44 patients (64.7%) underwent repeat IR outpatient paracentesis (total 187 paracenteses, 4.25 paracenteses/patient), 43 patients (62.3%) had ER visits (total 118 ER visits, 2.8/patient), 41 patients (59.4%) had hospital admissions (total 88 admissions, 2.2/patient), and 11 patients required ICU admission. Complications of cirrhosis noted during follow-up included hepatic encephalopathy (40.5%), acute kidney injury (38.2%), upper gastrointestinal (UGI) bleeding (16%), and spontaneous bacterial peritonitis (SBP) in 15%. The mortality rate at six months was 20%. On multivariate analysis, the predictive factors for mortality were older age (p = 0.03) and MELDNa score (p = 0.02). Baseline MELDNa was predictive of acute kidney injury (p = 0.02), UGI bleed (p < 0.01), and ICU admission (p < 0.01), but not of SBP, encephalopathy, ED visit, or hospital admissions. Among patients with more than one paracentesis (64%),six patients underwent transjugular portosystemic shunt (TIPS), but there was no documentation of TIPS consideration in 31 patients (70.4%). A total of 20 patients (29%) were waitlisted for liver transplantation. CONCLUSION: In this contemporary cohort of patients with cirrhosis undergoing outpatient IR paracentesis, we found a high rate of short-term cirrhosis complications and hospital utilization, while TIPS consideration was very low. Further data are needed to identify specific gaps in care, but IR paracentesis should be integrated within a multidisciplinary management model, with emphasis on early TIPS in eligible patients, as recommended by the current practice guidelines.

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Pneumatosis intestinalis (PI), pneumoperitoneum, and ascites are radiographic findings that may be incidental or associated with severe bowel compromise. Asymptomatic patients with benign PI, pneumoperitoneum, or ascites are often observed or treated conservatively. However, these findings are concerning in symptomatic patients and often require surgical consultation and urgent surgical intervention Approximately 15% of PI cases are idiopathic, and 85% are secondary due to an underlying pathology including but not limited to pulmonary disease, autoimmune disease, drug-induced sources, gastrointestinal disease, infectious sources, and iatrogenic sources. A management plan for PI proves challenging to create when the pathogenesis is poorly understood and the presenting clinical picture varies. Reported is a case of a 51-year-old female with severe abdominal pain, PI, pneumoperitoneum, and ascites. Managing a patient presenting this way with surgical intervention is a viable option; however, this patient's management was successful using a conservative approach.

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Umbilical hernia is a relatively common complication developing in patients with liver cirrhosis with recurrent ascites. Abdominal paracentesis is considered the mainstay procedure to manage refractory ascites and to diagnose spontaneous bacterial peritonitis. Incarceration of umbilical hernia is a rare but serious adverse event following therapeutic paracentesis that requires prompt management. We describe a case of an incarcerated umbilical hernia following paracentesis requiring surgical repair in a cirrhotic patient.

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It is rare for patients to have hemorrhagic complications after abdominal paracentesis. Abdominal wall hematomas and hemoperitoneum are the most common hemorrhagic complications of paracentesis. The incidence rate of hemorrhage-related complications is unknown. The risk of hemorrhage-related complications can be elevated in patients with underlying kidney disease and those who are thrombocytopenic or coagulopathic. However, there is no correlation between the degree of thrombocytopenia or coagulopathy and the risk of bleeding. It is important to identify the high-risk patients to prevent these hemorrhage-related complications. In rare instances, secondary complications can develop from hemoperitoneum. We present a case of a cirrhotic patient who underwent a diagnostic paracentesis leading to subsequent intra-abdominal hematoma followed by small bowel obstruction (SBO) due to large abdominal hematoma compressing small bowel loops.

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Although ascites leakage to the skin is the most frequent complication after abdominal paracentesis, leakage to the subcutaneous space has not been reported. Here, we report a subcutaneous effusion after paracentesis suggesting ascites leakage. We should be aware of this rare complication due to the potential risk of dissemination.

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BACKGROUND: Diagnostic laparoscopy is often a necessary, albeit invasive, procedure to help resolve undiagnosed peritoneal diseases. Previous retrospective studies reported that EUS-FNA is feasible on peritoneal and omental lesions, however, EUS-FNA provided a limited amount of tissue for immunohistochemistry stain (IHC). AIM: This pilot study aims to prospectively determine the effectiveness of EUS-FNB regarding adequacy of tissue for IHC staining, diagnostic rate and the avoidance rate of diagnostic laparoscopy or percutaneous biopsy in patients with these lesions. METHODS: From March 2017 to June 2018, patients with peritoneal or omental lesions identified by CT or MRI at the King Chulalongkorn Memorial Hospital, Bangkok, Thailand were prospectively enrolled in the study. All Patients underwent EUS-FNB. For those with negative pathological results of EUS-FNB, percutaneous biopsy or diagnostic laparoscopy was planned. Analysis uses percentages only due to small sample sizes. RESULTS: A total of 30 EUS-FNB passes were completed, with a median of 3 passes (range 2-3 passes) per case. For EUS-FNB, the sensitivity, specificity, PPV, NPV and accuracy of EUS-FNB from peritoneal lesions were 63.6%, 100%, 100%, 20% and 66.7% respectively. Adequate tissue for IHC stain was found in 25/30 passes (80%). The tissues from EUS results were found malignant in 7/12 patients (58.3%). IHC could be done in 10/12 patients (83.3%). Among the five patients with negative EUS results, two underwent either liver biopsy of mass or abdominal paracentesis, showing gallbladder cancer and adenocarcinoma. Two patients refused laparoscopy due to advanced pancreatic cancer and worsening ovarian cancer. The fifth patient had post-surgical inflammation only with spontaneous resolution. The avoidance rate of laparoscopic diagnosis was 58.3%. No major adverse event was observed. CONCLUSIONS: EUS-FNB from peritoneal lesions provided sufficient core tissue for diagnosis and IHC. Diagnostic laparoscopy can often be avoided in patients with peritoneal lesions.

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BACKGROUND: Peritoneal dialysis (PD) is increasingly used for the long-term management of refractory congestive heart failure (CHF). Patients with severe CHF and ascites were treated with regular at-home abdominal paracentesis via Tenckhoff catheter. We investigated the outcome of those patients, aiming to identify potential prognostic factors for longer survival. METHODS: Patients with refractory CHF referred by cardiologists to the PD unit from years 2009 to 2019 and treated with regular at-home abdominal paracentesis via Tenckhoff catheter without peritoneal exchanges, were enrolled into this prospective observational study. RESULTS: From the total of 69 refractory CHF patients treated with PD, 18 (26%) were managed with regular at-home abdominal paracentesis via Tenckhoff catheter and improved without the need for peritoneal exchanges for fluid removal (no peripheral oedema or pulmonary congestion) or for solutes removal. Median survival of severe CHF patients treated with abdominal paracentesis was 13.5 months (0-34 months). Long-term survivors demonstrated significant improvement in the New York Heart Association (NYHA) functional class, improvement in kidney function and decrease in serum C-reactive protein (CRP) and Brain natriuretic peptide (BNP) compared with their baseline status. A subgroup of patients with shorter survival were more likely to have evidence of liver cirrhosis and significantly lower serum sodium compared with patients with longer survival. CONCLUSIONS: Refractory CHF patients with massive ascites could be successfully treated with regular at-home abdominal paracentesis via Tenckhoff catheter. This treatment provides a useful alternative to periodical percutaneous paracentesis on as-needed basis.

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Abdominal paracentesis drainage (APD), as an effective treatment of severe acute pancreatitis (SAP) in clinical settings, can ameliorate intestinal barrier damage and the overall severity of SAP. However, the mechanism underlying therapeutic effects of APD on damaged intestinal mucosal barrier during SAP is still unclear. Here, SAP was induced by injecting 5% Na-taurocholate retrograde into the biliopancreatic duct of rats to confirm the benefits of APD on enteral injury of SAP and further explore the possible mechanism. Abdominal catheter was placed after SAP was induced in APD group. As control group, the sham group received no operation except abdominal opening and closure. By comparing changes among control group, sham group, and APD group, APD treatment obviously lowered the intestinal damage and reduced the permeation of intestinal mucosal barrier, which was evidenced by intestinal H&E staining, enteral expression of tight junction proteins, intestinal apoptosis measurement and detection of serum diamine oxidase, intestinal fatty acid binding protein and D-lactic acid. Furthermore, we found that APD polarized intestinal macrophages toward M2 phenotype by the determination of immunofluorescence and western blotting, and this accounts for the benefits of APD for intestinal injury in SAP. Importantly, the protective effect against intestinal injury by APD treatment was mediated through the inhibited ASK1/JNK pathway. In summary, APD improved the intestinal mucosal barrier damage in rats with SAP through an increasing portion of M2 phenotype macrophages in intestine via inhibiting ASK1/JNK pathway.

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BACKGROUND: Our previous studies confirmed that abdominal paracentesis drainage (APD) attenuates intestinal mucosal injury in rats with severe acute pancreatitis (SAP), and improves administration of enteral nutrition in patients with acute pancreatitis (AP). However, the underlying mechanisms of the beneficial effects of APD remain poorly understood. AIM: To evaluate the effect of APD on intestinal inflammation and accompanying apoptosis induced by SAP in rats, and its potential mechanisms. METHODS: SAP was induced in male adult Sprague-Dawley rats by 5% sodium taurocholate. Mild AP was induced by intraperitoneal injections of cerulein (20 µg/kg body weight, six consecutive injections). Following SAP induction, a drainage tube connected to a vacuum ball was placed into the lower right abdomen of the rats to build APD. Morphological changes, serum inflammatory mediators, serum and ascites high mobility group box protein 1 (HMGB1), intestinal barrier function indices, apoptosis and associated proteins, and toll-like receptor 4 (TLR4) signaling molecules in intestinal tissue were assessed. RESULTS: APD significantly alleviated intestinal mucosal injury induced by SAP, as demonstrated by decreased pathological scores, serum levels of D-lactate, diamine oxidase and endotoxin. APD reduced intestinal inflammation and accompanying apoptosis of mucosal cells, and normalized the expression of apoptosis-associated proteins in intestinal tissues. APD significantly suppressed activation of the intestinal TLR4 signaling pathway mediated by HMGB1, thus exerting protective effects against SAP-associated intestinal injury. CONCLUSION: APD improved intestinal barrier function, intestinal inflammatory response and accompanying mucosal cell apoptosis in SAP rats. The beneficial effects are potentially due to inhibition of HMGB1-mediated TLR4 signaling.

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This technical report describes the creation of a model of a newborn with hydrops fetalis (HF). This model is easy to assemble, quite authentic and reusable allowing for many neonatal intensive care providers to practice rare, life-saving procedures. Learning objectives and a critical action checklist have been included to guide the simulation and add additional complexity to the scenario, if desired.

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AIM: The aim of the study is to evaluate the role of abdominal paracentesis drainage (APD) ahead of percutaneous catheter drainage (PCD), as a modification of the step-up approach, when treating acute pancreatitis (AP) with peritoneal ascitic fluid (PAF). PATIENTS AND METHODS: This is a prospective cohort study including 118 participants with AP in which the indicative factors for upgrading from APD to PCD were investigated in patients with PAF. Ninety six patients with a sufficient volume of PAF initially underwent ultrasound-guided APD and were separated into two groups : group A (the patients who did not undergo PCD after APD) and B (the patients who underwent PCD after APD). Participants with AP who underwent PCD but lacked enough PAF for APD before PCD were followed up in a separate group (group C). Primary outcome was conversion rate to more aggressive procedure (percutaneous treatment modalities to surgery or death). RESULTS: Of the 96 patients who underwent APD, 42 were managed with APD alone and 54 received PCD after APD (14 required necrosectomy after initial PCD). APD led to a large decrease in levels of the initial severity scores and laboratory variables in both groups of patients with PAF. The reduction in levels of all evaluated predictive severity scores and laboratory variables was similar (P>0.05) after APD. CONCLUSION: Application of APD ahead of PCD is safe and beneficial in the management of AP with abdominal or pelvic fluid collections. There are no relevant predictors that suggest whether APD is indicated or not.

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BACKGROUND: Abdominal paracentesis drainage (APD) is a safe and effective strategy for severe acute pancreatitis (SAP) patients. However, the effects of APD treatment on SAP-associated cardiac injury remain unknown. AIM: To investigate the protective effects of APD on SAP-associated cardiac injury and the underlying mechanisms. METHODS: SAP was induced by 5% sodium taurocholate retrograde injection in Sprague-Dawley rats. APD was performed by inserting a drainage tube with a vacuum ball into the lower right abdomen of the rats immediately after SAP induction. Morphological staining, serum amylase and inflammatory mediators, serum and ascites high mobility group box (HMGB) 1, cardiac-related enzymes indexes and cardiac function, oxidative stress markers and apoptosis and associated proteins were assessed in the myocardium in SAP rats. Nicotinamide adenine dinucleotide phosphate oxidase activity and mRNA and protein expression were also examined. RESULTS: APD treatment improved cardiac morphological changes, inhibited cardiac dysfunction, decreased cardiac enzymes and reduced cardiomyocyte apoptosis, proapoptotic Bax and cleaved caspase-3 protein levels. APD significantly decreased serum levels of HMGB1, inhibited nicotinamide adenine dinucleotide phosphate oxidase expression and ultimately alleviated cardiac oxidative injury. Furthermore, the activation of cardiac nicotinamide adenine dinucleotide phosphate oxidase by pancreatitis-associated ascitic fluid intraperitoneal injection was effectively inhibited by adding anti-HMGB1 neutralizing antibody in rats with mild acute pancreatitis. CONCLUSION: APD treatment could exert cardioprotective effects on SAP-associated cardiac injury through suppressing HMGB1-mediated oxidative stress, which may be a novel mechanism behind the effectiveness of APD on SAP.

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