Acute acalculous cholecystitis in hospitalized patients in intensive care unit: study of 5 cases.

Background: Acute acalculous cholecystitis (AAC) is an inflammation of the gallbladder with no evidence of gallstones. It occurs mostly in patients in intensive care units and is associated with several risk factors (fasting, parenteral nutrition, mechanical ventilation) leading to ischemia of the gallbladder wall. Methods: This is a retrospective multiple cases study of five cases of AAC in patients hospitalized in the Medical Intensive Care Unit at Tahar Sfar Hospital in Mahdia over a 4-year period between January 2016 and December 2020. Results: The mean age of our patients was 62.5 years (±8) with a male predominance (sex ratio 4/1). The mean Charlson comorbidity index was 4. Four patients were under invasive mechanical ventilation and total parenteral nutrition. Three patients were under vasoactive drugs. All patients had fever, the patient who was conscious presented with abdominal pain and vomiting with right hypochondrium tenderness, while two patients presented with abdominal bloating and bowel obstruction. All patients had a biological inflammatory syndrome, two patients had cytolysis, and only one patient had cholestasis. All patients had a thickening of the gallbladder wall greater than 3mm on ultrasound. Treatment was based on broad-spectrum antibiotic therapy followed by early (<72 h) cholecystectomy. Only one patient had postoperative peritonitis. All patients had gangrenous cholecystitis. Three patients died of multi-visceral failure. Conclusion: This study, in spite of its small sample size, gave us an idea of patients at risk of developing this disease, on the difficulty of diagnosis and on the importance of surgical treatment.

Comparison Between Continuous and Intermittent Administration of Hydrocortisone During Septic Shock: A Randomized Controlled Clinical Trial.

OBJECTIVES: The best modality of administration of hydrocortisone during septic shock has been poorly evaluated and the guidelines remain unclear in this respect. This study aimed to compare bolus of hydrocortisone to a continuous infusion during septic shock. DESIGN: Randomized controlled, open-label trial. SETTING: Medical ICU of a university hospital. PATIENTS: Adult patients with septic shock requiring more than 2 mg/h (approximately 33.3 µg/mn) of norepinephrine after adequate fluid administration were eligible.Patients already receiving corticosteroids or who have a contraindication to corticosteroids, patients who died within 24 h and those with a decision of not to resuscitate were excluded. INTERVENTIONS: Patients were randomized either to receive hydrocortisone 200 mg/d by continuous infusion or by boluses of 50 mg every 6 h throughout the prescription of vasopressors with a maximum of 7 days. RESULTS: Twenty-nine patients were included in each group. Shock reversal was significantly higher in the HC bolus group (66% vs. 35%, P = 0.008). The median time to shock reversal was 5 days (95% CI, 4.31-5.69) in the HC bolus group compared to 6 days (95% CI, 4.80-7.19) in the HC continuous infusion group (log Rank = 0.048). The number of hours spent with blood glucose ≥ 180 mg/dL was higher in the HC continuous infusion group with a median of 64 h [IQR (2-100)] versus 48 h [IQR (14-107)] in the HC bolus group, (P = 0.60), and daily insulin requirements were similar between the two groups (P = 0.63). The occurrence of other side effects, mortality, and ICU LOS were similar between the study groups. CONCLUSION: Hydrocortisone administered by intermittent bolus was associated with higher shock reversal at day 7 compared with a continuous infusion.

Delirium in the Intensive Care Unit: Incidence, Risk Factors, and Impact on Outcome.

BACKGROUND: The incidence and risk factors for delirium vary among studies. OBJECTIVE: We aimed to determine the incidence, risk factors, and impact on outcome of delirium in a medical Intensive Care Unit (ICU) in Tunisia using a prospective observational study. PATIENTS: All consecutive patients admitted to the ICU between May 2012 and April 2013 were included if they were aged more than 18 years and had an ICU stay of more than 24 h. Patients who had a cardiac arrest or have a history of dementia or psychosis were excluded. Patients eligible for the study were evaluated by the medical staff to detect delirium using the CAM-ICU. RESULTS: A total of 206 patients were included, 167 did not present delirium and 39 (19%) were analyzed for delirium. Delirious patients had a significantly longer duration of mechanical ventilation (10 days[6-20] vs. 2 days[0-7]) respectively and length of stay in ICU (21.5 days [10.5-32.5] vs. 8 days [5-13]), with no impact on mortality. Delirium was associated with high incidence of unintentional removal of catheters (39% vs. 9%; P < 0.0001), endotracheal tubes (18% vs. 1%; P < 0.0001), and urinary catheters (28% vs. 2%, P < 0.0001). In multivariable risk regression analysis, age (odds ratio [OR] = 4.1, 95% confidence interval [CI]: 1.39-12.21; P = 0.01), hypertension (OR = 3.3, 95% CI: 1.31-8.13; P = 0.011), COPD (OR = 3.5, 95% CI: 1.47-8.59; P = 0.005), steroids (OR = 2.8, 95% CI: 1.05-7.28; P = 0.038), and sedation (OR = 5.4, 95% CI: 2.08-13.9; P < 0.0001) were independent risk factors for delirium. We did not find a relationship between delirium and mortality. CONCLUSION: Delirium is frequent in the ICU and is associated with poor outcome. Several risk factors for delirium are linked to intensive care environment.