Publications by authors named "Ahmed M Mukhtar"

Background: Immune paralysis can be defined as a hypoinflammatory state associated with the incapacity of the immune system to release proinflammatory mediators despite the clearance of pathogens by antimicrobials. Persistent immune paralysis leads to failure to eradicate primary infections with a substantial increase in the risk of multiorgan dysfunction and mortality. The state of immune paralysis is caused mainly by the diminished ability of monocytes to release proinflammatory cytokines in response to endotoxin.

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Background: Patients with liver cirrhosis develop symptoms comparable to those of patients with sepsis, who have increased total vascular compliance, which may cause blood pooling in the venous pool. No previous studies have evaluated the effect of using norepinephrine on the intravascular blood volume. We investigated the norepinephrine infusion's effect on the mean systemic filling pressure, venous return, and cardiac preload in patients undergoing liver transplantation.

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Background: Fluid management practices during and after liver transplantation vary widely among centers despite better understanding of the pathophysiology of end-stage liver disease and of the effects of commonly used fluids. This reflects a lack of high quality trials in this setting, but also provides a rationale for both systematic review of all relevant studies in liver recipients and evaluation of new evidence from closely related domains, including hepatology, non-transplant abdominal surgery, and critical care.

Objectives: To develop evidence-based recommendations for perioperative fluid management to optimize immediate and short-term outcomes following liver transplantation.

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Purpose: To evaluate the effect of national early warning scoring system (NEWS) implementation in identifying patients at risk of clinical deterioration at an emergency hospital.

Background: Early warning score has been developed to facilitate early detection of deterioration by categorizing a patients' severity of illness and prompting nursing staff to request a medical review at specific trigger points.

Patients And Methods: A prospective, control/intervention groups', quasi-experimental design was utilized.

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Background: Fluid challenge test is a widely used method for the detection of fluid responsiveness in acute circulatory failure. However, detection of the patient's response to the fluid challenge requires monitoring of cardiac output which is not feasible in many settings. We investigated whether the changes in the pulse oximetry-derived peripheral perfusion index (PPI), as a non-invasive surrogate of cardiac output, can detect fluid responsiveness using the fluid challenge test or not.

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Major hemodynamic changes are frequently noted during liver transplantation (LT). We evaluated the performance of electrical velocimetry (EV) as compared to that of TEE in SV optimization during liver transplantation. This was an observational study in 32 patients undergoing LT.

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Background: Sepsis-induced diaphragmatic dysfunction is one of the main risk factors of failure to liberate patients from mechanical ventilation. Several studies addressed diaphragmatic ultrasound as a valuable tool in the assessment of diaphragmatic function during liberation from mechanical ventilation in different populations. However, none of these studies examined the use of diaphragmatic ultrasound to predict failure of liberation from mechanical ventilation in subjects with sepsis METHODS: A prospective observational study was done with subjects on mechanical ventilation and with abdominal sepsis.

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Tuberculosis (TB) is one of the top ten causes of death worldwide. In 2016, there were 490,000 cases of multi-drug resistant TB globally. Over 2 billion people have asymptomatic latent Mycobacterium tuberculosis infection.

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We review contemporary coagulation management for patients undergoing liver transplantation. A better understanding of the complex physiologic changes that occur in patients with end-stage liver disease has resulted in significant advances in anesthetic and coagulation management. A group of internationally recognized experts have critically evaluated current approaches for coagulopathy detection and management.

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Background: Ventilator-associated pneumonia (VAP) is one of the most common nosocomial infections; however, its diagnosis remains difficult to establish in the critical care setting. We investigated the potential role of neutrophil CD64 (nCD64) expression as an early marker for the diagnosis of VAP.

Methods: Forty-nine consecutive patients with clinically suspected VAP were prospectively included in a single-center study.

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Background: Fungal infections have a significant impact on patient survival after liver transplantation, mostly caused by Candida and Aspergillus. The clinical manifestations vary, and range from colonization, active local infection, to severe invasive form. A high degree of suspicion is required for the early diagnosis and, accordingly, the optimal management of these infections.

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Background: Although the cardiovascular effect of CO2 insufflation has not been reported in pediatric thoracoscopy, several clinical trials have demonstrated significant hemodynamic deterioration in adults. We investigated the concept of therapeutic hypercapnia for counteracting the hemodynamic effect of induced capnothorax.

Methods: Twelve pediatric patients who underwent video-assisted thoracoscopic patent ductus arteriosus closure were enrolled in the study.

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A small infant with congenital cystic adenomatoid was scheduled for thoracoscopic resection of the lung cyst. During carbon dioxide insufflation, there was a sharp rise of endtidal carbon dioxide which was followed by marked hypoxemia and bradycardia due to occlusion of the tracheal tube with blood. The plan changed to open thoracotomy and total pneumonectomy.

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We tested dexmedetomidine, an alpha2 agonist, for its ability to decrease heart rate, arterial blood pressure, and neuroendocrinal responses during pediatric cardiac surgery. In a randomized, placebo-controlled study, 30 pediatric patients undergoing open heart surgery were randomly assigned to one of two equal groups. The control group received saline, whereas the treatment group (DEX group) received an initial bolus dose of dexmedetomidine (0.

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Objective: To evaluate the efficacy and clinical outcome of simultaneous or sequential anterior and posterior surgical approaches in the management of spinal tuberculosis in the form of anterior extirpation of the tuberculous lesion, strut bone grafting of the defect produced and posterior instrumentation for spinal fixation.

Subjects And Methods: Twenty-two patients who had tuberculosis of the thoracic and lumbar spine with moderate to severe localized kyphosis and variable degrees of neurological deficits were treated at Al Razi Hospital (Kuwait) in the period from 1998 to 2000 by anterior debridement and autogenous strut bone grafting with simultaneous or staged posterior spinal fixation using either USS or SOCON spinal instrumentation. Appropriate antituberculosis treatment was given to all patients for 9-12 months.

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