OBJECTIVE: To investigate the value of maximal rate of left ventricular pressure (dp/dtmax) in evaluating the changes of cardiac function before and after heart rate reduction in patients with sepsis-induced cardiomyopathy (SIC). METHODS: A single-center, prospective randomized controlled study was conducted. Adult patients with sepsis/septic shock admitted to the department of intensive care unit (ICU) of Tianjin Third Central Hospital from April 1, 2020 to February 28, 2022 were enrolled. Speckle tracking echocardiography (STE) and pulse indication continuous cardiac output (PiCCO) monitoring were performed immediately after the completion of the 1 h-Bundle therapy. The patients with heart rate over 100 beats/minutes were selected and randomly divided into esmolol group and regular treatment group, 55 cases in each group. All patients underwent STE and PiCCO monitoring at 6, 24 and 48 hours after admission in ICU and calculated acute physiology and chronic health evaluation II (APACHE II) and sequential organ failure assessment (SOFA). Primary outcome measure: change in dp/dtmax after reducing heart rate by esmolol. Secondary outcome measures: correlation between dp/dtmax and global longitudinal strain (GLS); changes of vasoactive drug dosage, oxygen delivery (DO₂), oxygen consumption (VO₂) and stroke volume (SV) after the administration of esmolol; proportion of heart rate reaching the target after the administration of esmolol; 28-day and 90-day mortality in two groups. RESULTS: Baseline data on age, gender, body mass index, SOFA score, APACHE II score, heart rate, mean arterial pressure, lactic acid, 24-hour fluid balance, sepsis etiology and prior comorbidities were similar between esmolol group and regular treatment group, there were no significant differences between the two groups. All SIC patients achieved the target heart rate after 24 hours of esmolol treatment. Compared with regular treatment group, parameters reflecting myocardial contraction such as GLS, global ejection fraction (GEF) and dp/dtmax were significantly increased in esmolol group [GLS: (-12.55±4.61)% vs. (-10.73±4.82)%, GEF: (27.33±4.62)% vs. (24.18±5.35)%, dp/dtmax (mmHg/s): 1 312.1±312.4 vs. 1 140.9±301.0, all P < 0.05], and N-terminal pro-brain natriuretic peptide (NT-proBNP) significantly decreased [μg/L: 1 364.52 (754.18, 2 389.17) vs. 3 508.85 (1 433.21, 6 988.12), P < 0.05], DO₂ and SV were significantly increased [DO₂ (mL×min^-1×m^-2): 647.69±100.89 vs. 610.31±78.56, SV (mL): 49.97±14.71 vs. 42.79±15.77, both P < 0.05]. The system vascular resistance index (SVRI) in esmolol group was significantly higher than that in regular treatment group (kPa×s×L^-1: 287.71±66.32 vs. 251.17±78.21, P < 0.05), even when the dosage of norepinephrine was similar between the two groups. Pearson correlation analysis showed that dp/dtmax was negatively correlated with GLS in SIC patients at 24 hours and 48 hours after ICU admission (r values were -0.916 and -0.935, respectively, both P < 0.05). Although there was no significant difference in 28-day mortality between esmolol group and regular treatment group [30.9% (17/55) vs. 49.1% (27/55), χ² = 3.788, P = 0.052], the rate of esmolol use in patients who died within 28 days was lower than that in patients who survived [38.6% (17/44) vs. 57.6% (38/66), χ² = 3.788, P = 0.040]. In addition, esmolol has no effect on the 90-day mortality of patients. Logistic regression analysis showed that after adjusting for SOFA score and DO₂ factors, patients who used esmolol had a significantly lower risk of 28-day mortality compared with patients who did not use esmolol [odds ratio (OR) = 2.700, 95% confidence interval (95%CI) was 1.038-7.023, P = 0.042]. CONCLUSIONS dp/dtmax in PiCCO parameter can be used as a bedside indicator to evaluate cardiac function in SIC patients due to its simplicity and ease of operation. Esmolol control of heart rate in SIC patients can improve cardiac function and reduce short-term mortality.
Adult ; Humans ; Prospective Studies ; Ventricular Pressure ; Sepsis/complications* ; Shock, Septic/drug therapy* ; Cardiomyopathies/etiology* ; Prognosis

Objective: To investigate the predictive value of D-dimer for deep venous thrombosis (DVT) of lower extremity in adult burn patients. Methods: A retrospective case series study was conducted. The clinical data of 3 861 adult burn patients who met the inclusion criteria and were admitted to the Department of Burns of Zhengzhou First People's Hospital from January 1, 2015 to December 31, 2019 were collected. The patients were divided into DVT group (n=77) and non-DVT group (n=3 784) according to whether DVT of lower extremity occurred during hospitalization or not. Data of patients in the two groups were collected and compared, including the gender, age, total burn area, D-dimer level, with lower limb burn and inhalation injury or not on admission, with sepsis/septic shock, femoral vein indwelling central venous catheter (CVC), history of surgery, and infusion of concentrated red blood cells or not during hospitalization. Data were statistically analyzed with independent sample t test, Mann-Whitney U test, and chi-square test. The indicators with statistically significant differences between the two groups were analyzed with multivariate logistic regression analysis to screen the independent risk factors for DVT of lower extremity in 3 861 adult burn patients. The receiver operating characteristic (ROC) curve of the independent risk factors predicting DVT of lower extremity in 3 861 adult burn patients were drawn, and the area under the curve (AUC), the optimal threshold value, and the sensitivity and specificity under the optimal threshold value were calculated. The quality of the AUC was compared by Delong test, and the sensitivity and specificity under the optimal threshold value were compared using chi-square test. Results: There were no statistically significant differences in gender, occurrence of sepsis/septic shock or history of surgery during hospitalization between patients in the two groups (P>0.05), while there were statistically significant differences in age, total burn area, D-dimer level, lower limb burn and inhalation injury on admission, and femoral vein indwelling CVC and infusion of concentrated red blood cells during hospitalization between patients in the two groups (t=-8.17, with Z values of -5.04 and -10.83, respectively, χ² values of 21.83, 5.37, 7.75, and 4.52, respectively, P<0.05 or P<0.01). Multivariate logistic regression analysis showed that age, total burn area, and D-dimer level were the independent risk factors for DVT of lower extremity in 3 861 adult burn patients (with odds ratios of 1.05, 1.02, and 1.14, respectively, 95% confidence intervals of 1.04-1.06, 1.00-1.03, and 1.10-1.20, respectively, P<0.05 or P<0.01). The AUCs of ROC of age, total burn area, and D-dimer level for predicting DVT of lower extremity in 3 861 adult burn patients were 0.74, 0.67, and 0.86, respectively (with 95% confidence intervals of 0.68-0.80, 0.60-0.74, and 0.83-0.89, respectively, P values<0.01), the optimal threshold values were 50.5 years old, 10.5% total body surface area, and 1.845 mg/L, respectively, the sensitivity under the optimal threshold values were 71.4%, 70.1%, and 87.0%, respectively, and the specificity under the optimal threshold values were 66.8%, 67.2%, and 72.9%, respectively. The AUC quality and sensitivity and specificity under the optimal threshold value of D-dimer level were significantly better than those of age (z=3.29, with χ² values of 284.91 and 34.25, respectively, P<0.01) and total burn area (z=4.98, with χ² values of 326.79 and 29.88, respectively, P<0.01), while the AUC quality and sensitivity and specificity under the optimal threshold values were similar between age and total burn area (P>0.05). Conclusions: D-dimer level is an independent risk factor for DVT of lower extremity in adult burn patients, its AUC quality and sensitivity and specificity under the optimal threshold value are better than those of age and total burn area, and it has good predictive value for DVT of lower extremity in adult burn patients.
Adult ; Burns/complications* ; Fibrin Fibrinogen Degradation Products/analysis* ; Humans ; Lower Extremity/blood supply* ; Lung Injury/etiology* ; Middle Aged ; Prognosis ; Retrospective Studies ; Shock, Septic/etiology* ; Venous Thrombosis/etiology*

The published clinical research in 2018 in surgical infection are changing current opinions in the management of acute appendicitis, antibiotics usage, resuscitation of septic shock, and choice of nutritional therapy in critically ill patients. In the management of uncomplicated acute appendicitis, antibiotic therapy can be successful in selected patients who wish to avoid surgery. Delayed primary wound closure can not reduce superficial surgical site infection rates compared to primary wound closure for complicated appendicitis. Infusion of antibiotics 30 minutes before the start of operation may influence their prophylactic effect on surgical site infection. After adequate source control, long-course antibiotic therapy in critically ill post-operative patients is not associated with any clinical benefit. Although susceptible in the test, piperacillin-tazobactam can not replace carbapenems in patients with Escherichia coli and Klebsiella pneumoniae bloodstream infection that produce extended-spectrum beta-lactamase for definitive treatment. Deresuscitation of critically ill patients is associated with reduced mortality. Hydrocortisone therapy has potential role in the patients with septic shock and worth further evidence. The use of an energy-dense formulation for enteral delivery of nutrition can not improve 90-day survival rate in patients undergoing mechanical ventilation. Compared with early isocaloric parenteral nutrition, early enteral nutrition did not reduce mortality or the risk of secondary infections, but was associated with a greater risk of digestive complications in critically ill adults with septic shock.
Anti-Bacterial Agents ; administration & dosage ; therapeutic use ; Appendicitis ; complications ; therapy ; Critical Illness ; Humans ; Nutritional Support ; Shock, Septic ; etiology ; therapy ; Surgical Wound Infection ; etiology ; prevention & control ; therapy

BACKGROUNDSepsis is one of the main causes of mortality in critically ill patients following progression to septic shock. To investigate the pathophysiologic changes of sepsis, we developed a novel porcine model of septic shock induced by acute respiratory distress syndrome (ARDS) due to methicillin-resistant Staphylococcus aureus(MRSA) pneumonia.

METHODSTwenty-six male Landraces (Lvyuanweiye, Beijing, China) weighing 30 ± 2 kg were divided into four groups: sham group (SH; n = 5); cotton smoke inhalation group (SM; n = 6); MRSA pneumonia group (MR; n = 6); and septic shock group with cotton smoke inhalation + MRSA pneumonia (SS; n = 9). Extensive hemodynamics, oxygen dynamics, and lung function were monitored for 24 h following the injury or until death. Tissues were collected, and histopathology evaluations were carried out.

RESULTSBlood cultures from 6 of 9 animals in the SS group were positive for MRSA. Two hours following the injury, decreased mean arterial blood pressure (60-70 mmHg) and cardiac index (<2 L.min-1.m-2) were observed in the animals in the SS group, while systemic vascular resistance index was increased. The hemodynamic characteristics of septic shock were only observed in the SS group but not significant in the other groups. The PO2/FiO2in the SM and SS groups decreased to 300 and 100, respectively. In the SS group, extravascular lung water index increased to 20 ml/kg, whereas thoracopulmonary compliance decreased to 10 ml/H2O after injury. Deterioration of pulmonary function in the SS group was more serious than the SM and MR groups. Severe lung injury in the SS group was confirmed by the histopathology evaluations. The lung injury confirmed by high-resolution thin-section computed tomography and histopathology in the SS group was more serious than those of other groups.

CONCLUSIONSIn the present study, we developed a novel porcine model of septic shock induced by ARDS due to severe MRSA pneumonia with characteristic hyperdynamic and hypodynamic phases in 24 h, which mimicked the hemodynamic changing of septic shock in human.

Animals ; Disease Models, Animal ; Hemodynamics ; physiology ; Male ; Methicillin-Resistant Staphylococcus aureus ; pathogenicity ; Pneumonia ; microbiology ; pathology ; Respiratory Distress Syndrome, Adult ; complications ; pathology ; Shock, Septic ; etiology ; pathology ; Swine

Humans ; Infant, Newborn ; Shock, Septic ; diagnosis ; etiology ; therapy

Choristoma ; complications ; diagnosis ; diagnostic imaging ; Duodenal Diseases ; complications ; diagnosis ; diagnostic imaging ; Duodenoscopy ; Fatal Outcome ; Female ; Humans ; Middle Aged ; Pancreas ; Shock, Septic ; etiology ; Tomography, X-Ray Computed ; Ultrasonography

Pulmonary edema frequently occurs after severe burn. It not only impairs pulmonary function directly, but also can induce or exacerbate other pulmonary complications such as lung infection, acute lung injury ( ALI), and ARDS. Extravascular lung water (EVLW) is closely related to the pulmonary edema. Dynamical monitor of EVLW has been used to predict and quantify the degree of pulmonary edema clinically. This review focuses on the recent progresses at home and abroad on the formation mechanism, monitoring approach, and prevention and treatment of EVLW after severe burn injury.
Acute Lung Injury ; etiology ; physiopathology ; Burns ; Extravascular Lung Water ; Humans ; Pulmonary Edema ; diagnosis ; etiology ; Severity of Illness Index ; Shock, Septic ; complications ; physiopathology ; Thermodilution ; Trauma Severity Indices

BACKGROUND/AIMS: Incidence of pyogenic liver abscess (PLA) has been increasing worldwide, especially in the elderly population. Therefore, the aim of this study is to elucidate the clinical features and outcomes of PLA in elderly patients. METHODS: A total of 602 patients diagnosed with PLA from January 2003 to January 2013 were analyzed retrospectively. The patients were divided according to two age groups; > or =65 years (n=296) and <65 years (n=306). RESULTS: The mean age was 73.59+/-5.98 (range, 65-93) years in the elderly group. Significantly higher incidence of females (52.4% vs. 29.1%, p<0.001), hepatobiliary disease (41.2% vs. 24.8%, p<0.001), hepatobiliary procedure (29.4% vs. 13.7%, p<0.001), underlying malignancy (18.2% vs. 4.6%, p<0.001), culture positivity of resistant organism (20.6% vs. 14.4%, p=0.047), occurrence of complication (19.6% vs. 12.8%, p=0.026), and higher white blood cell (13.44+/-6.56 vs. 12.26+/-5.89, p=0.021), but lower rates of right lobe abscess (67.2% vs. 80.4%, p<0.001), fever (68.6% vs. 79.3%, p=0.003), and lower CRP (16.79+/-9.67 vs. 18.80+/-9.86, p=0.012) was observed in elderly PLA patients, compared to younger patients. Regarding complications, elderly patients had higher incidence of septic shock (8.1% vs. 2.3%, p=0.001) and cardiovascular disease (2% vs. 0%, p=0.014). CONCLUSIONS: More atypical presentations and complications tend to occur in elderly PLA patients compared with younger patients. Clinicians should be aware of these age-related differences in PLA and devise management strategies accordingly.
Adolescent ; Adult ; Age Factors ; Aged ; Aged, 80 and over ; Anti-Bacterial Agents/therapeutic use ; Cardiovascular Diseases/epidemiology/etiology ; Child ; Drug Resistance, Bacterial ; Escherichia coli/isolation & purification ; Female ; Humans ; Incidence ; Klebsiella pneumoniae/isolation & purification ; Leukocyte Count ; Liver Abscess, Pyogenic/*drug therapy/epidemiology/microbiology/*pathology ; Male ; Middle Aged ; Prognosis ; Republic of Korea/epidemiology ; Retrospective Studies ; Sex Factors ; Shock, Septic/epidemiology/etiology ; Young Adult

Umbilical cord blood (UCB)-derived mesenchymal stem cells (MSCs) have been introduced as a possible therapy in acute lung injury and acute respiratory distress syndrome (ARDS). This case history is reported of a 59-yr-old man who was treated with MSCs in the course of ARDS and subsequent pulmonary fibrosis. He received a long period of mechanical ventilation and weaning proved difficult. On hospital day 114, he underwent the intratracheal administration of UCB-derived MSCs at a dose of 1 x 10(6)/kg. After cell infusion, an immediate improvement was shown in his mental status, his lung compliance (from 22.7 mL/cmH2O to 27.9 mL/cmH2O), PaO2/FiO2 ratio (from 191 mmHg to 334 mmHg) and his chest radiography over the course of three days. Even though he finally died of repeated pulmonary infection, our current findings suggest the possibility of using MSCs therapy in an ARDS patient. It is the first clinical case of UCB-derived MSCs therapy ever reported.
Bacterial Infections/diagnosis ; Drug Resistance, Multiple, Bacterial ; Fetal Blood/*cytology ; Humans ; Male ; *Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells/*cytology ; Middle Aged ; Respiratory Distress Syndrome, Adult/complications/radiography/*surgery ; Seizures/etiology ; Shock, Septic/diagnosis ; Tomography, X-Ray Computed ; Treatment Outcome

Sphingobacterium spiritivorum has been rarely isolated from clinical specimens of immunocompromised patients, and there have been no case reports of S. spiritivorum infection in Korea to our knowledge. We report a case of S. spiritivorum bacteremia in a 68-yr-old woman, who was diagnosed with acute myeloid leukemia and subsequently received chemotherapy. One day after chemotherapy ended, her body temperature increased to 38.3degrees C. A gram-negative bacillus was isolated in aerobic blood cultures and identified as S. spiritivorum by an automated biochemical system. A 16S rRNA sequencing analysis confirmed that the isolate was S. spiritivorum. The patient received antibiotic therapy for 11 days but died of septic shock. This is the first reported case of human S. spiritivorum infection in Korea. Although human infection is rare, S. spiritivorum can be a fatal opportunistic pathogen in immunocompromised patients.
Aged ; Anti-Bacterial Agents/therapeutic use ; Bacteremia/*complications/drug therapy/*microbiology ; Bone Marrow Cells/pathology ; Fatal Outcome ; Female ; Humans ; Immunocompromised Host ; Leukemia, Myeloid, Acute/*complications ; Phylogeny ; RNA, Ribosomal, 16S/genetics ; Sequence Analysis, DNA ; Shock, Septic/etiology/microbiology ; Sphingobacterium/classification/genetics/isolation & purification/*physiology