0000000000323241
AUTHOR
Annette Schmidt
showing 9 related works from this author
Postoperative nausea and vomiting in patients after craniotomy: incidence and risk factors
2011
Object The purpose of this study was to assess the incidence and risk factors of postoperative nausea and vomiting (PONV) after craniotomy because most available data about PONV in neurosurgical patients are retrospective in nature or derive from small prospective studies. Methods Postoperative nausea and vomiting was prospectively assessed within 24 hours after surgery in 229 patients requiring supratentorial or infratentorial craniotomy. To rule out the relevance of the neurosurgical procedure itself to the development of PONV, the observed incidence of vomiting was compared with the rate of vomiting predicted with a surgery-independent risk score (Apfel postoperative vomiting score). Re…
Pro-Inflammatory Cytokines in Elective Flap Surgery
2006
Surgical trauma releases inflammatory mediators such as pro-inflammatory cytokines. In this prospective, controlled, randomized trial we investigated the release of pro-inflammatory cytokines and monocyte/macrophage activation in patients scheduled for breast reconstruction after mastectomy. Patients were allocated to one of three surgical procedures, differing in complexity and in the need for implants used for reconstruction.Thirty mastectomized women underwent delayed breast reconstruction with the lateral thoracodorsal flap (LTD), the latissimus dorsi flap (LD), or the pedicled transverse rectus abdominis muscle flap (TRAM). Blood samples for TNF, IL-6, IL-8, neopterin, C-reactive prote…
Prospective assessment of postoperative pain after craniotomy.
2010
Pain after craniotomy may be underdiagnosed, despite the fact that it can increase postoperative complications for example arterial hypertension and postoperative hemorrhage. This study investigates the incidence and intensity of pain after craniotomy and characterizes the influencing parameters. During a 1-year period 256 patients undergoing elective craniotomy were prospectively included in the study. Intensity of pain was evaluated 1, 4, and 24 hours after extubation using a verbal numerical rating scale (NRS) ranging from 0 (no pain) to 10 (maximal pain). Routine perioperative pain management was not influenced by the investigators. Parameters including patient-related factors, drug adm…
Complement split products and proinflammatory cytokines in intraoperatively salvaged unwashed blood during hip replacement: comparison between hepari…
2008
Background and Objectives The aim of the present study was to investigate the quality of shed blood collected in a new intraoperative autotransfusion system (Sangvia®, AstraTech, Sweden) and to study whether heparin-coated surfaces in the device reduce the production of inflammatory mediators. Material and Methods The study was randomized and prospective. Twelve total hip arthroplasty patients whose blood was collected with a device having a heparin-coated surface and 12 patients whose blood was collected with a device having a non-heparin-coated surface were included. Venous blood was drawn from the patients preoperatively. Intraoperatively 200 ml salvaged blood was collected and samples…
Influence of organophosphate poisoning on human dendritic cells.
2013
Organophosphourus compounds (OPC, including nerve agents and pesticides) exhibit acute toxicity by inhibition of acetylcholinesterase. Lung affections are frequent complications and a risk factor for death. In addition, epidemiological studies reported immunological alterations after OPC exposure. In our experiments we investigated the effects of organophosphourus pesticides dimethoate and chlorpyrifos on dendritic cells (DC) that are essential for the initial immune response, especially in the pulmonary system. DC, differentiated from the monocyte cell line THP-1 by using various cytokines (IL-4, GM-CSF, TNF-α, Ionomycin), were exposed to organophosphourus compounds at different concentrat…
Is cell salvage safe in liver resection? A pilot study
2007
Abstract Study Objective To investigate the quality of cell salvaged (CS) blood in patients undergoing hemihepatectomy (study group) and compare it with CS-blood from aortic surgery (control group). Design Observational study. Setting Operating room in a university hospital. Measurements 6 patients undergoing hemihepatectomy or aortobifemoral bypass with intraoperative blood loss of more than 800 mL. Samples were drawn from the central venous catheter, from the reservoir of a CS recovery system, and from the processed blood in each patient to determine interleukin (IL)-6, IL-8, IL-10, tumor necrosis factor (TNF), complement C3a, and the terminal complement complex C5b-9. Microbiological ana…
Influence of cold ischemia time on complement activation, neopterin, and cytokine release in liver transplantation.
2004
The aim of this study was to determine whether a cold ischemia time (CIT) of12 hours influences the activation of complement as well as the plasma concentrations of neopterin, interleukin (IL)-6, or IL-8 in orthotopic liver transplantation (OLT).Eighteen consecutive patients undergoing OLT using a veno-venous bypass technique were divided into 2 groups: duration of CIT12 hours (group 1; n = 11), and CIT12 hours (group 2; n = 7). Blood samples were drawn preoperatively, 1 minute before, and 120 minutes after reperfusion.Preoperatively, complement split products, neopterin, IL-6, and IL-8 levels did not differ between the groups. At 120 minutes after reperfusion, the concentrations of C3a, SC…
Orthotopic liver transplantation in a malignant hyperthermia susceptible patient.
2005
We present a patient with hepatitis C and D and hepatocellular carcinoma who underwent preoperative evaluation for orthotopic liver transplantation. In his past medical history, he reported a life-threatening event during tonsillectomy in 1975. Intubation was impossible due to extreme jaw muscle tension, followed by excessive elevation in body temperature, tachycardia, and coma for a few days. We evaluated him for malignant hyperthermia, according to the European Malignant Hyperthermia Group Protocol, and found him highly positive in both the halothane and caffeine test, respectively. Three months later, we performed an orthotopic liver transplantation. During retransplantation 4 years late…
Anesthesiological Particularities in Bariatric Surgery
2011
Morbid obesity has become a global pandemic in recent years: 5% of the adult population of the USA are considered morbidly obese, i.e., have a BMI that exceeds 40. Every 90 seconds a US American dies of obesity and its consequences – making 1,000 people every day and 400,000 a year. This explains the dramatic rise of interest in bariatric procedures and with it in suitable anesthesiological methods.