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- Grossmann, Benjamin
(författare)
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Procedural sedation : Aspects on methods, safety and effectiveness
- 2019
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Safety and effectiveness are fundamental principles within the healthcare sector to provide quality of care and health improvement for patients. By ensuring that care is provided based on evidence-based knowledge, risks and complications can be minimised and the use of scarce resources optimised. An increasing demand for diagnostic and therapeutic procedures challenges the traditional methods for sedation regarding safety and effectiveness. It is desirable that the fundamental principles are improved when refining existing or developing new sedation methods. In this doctoral thesis, safety and effectiveness were evaluated for adult patient-controlled sedation (PCS) using propofol during two endoscopic procedures: endoscopic retrograde cholangiopancreaticography (ERCP) and flexible bronchoscopy (FB); and different doses of rectal racemic ketamine for paediatric (< 4 years) burn wound care.Methods: Data on vital functions, sedation level, safety interventions, procedure feasibility, patient-reported outcome and experience measures, and recovery, from three clinical randomised controlled trials were collected. Costs of sedation for the endoscopic procedures were compiled in a cost-analysis study.Results: PCS with propofol and bedside anaesthetic personnel was shown to be a safe and effective alternative method of sedation during ERCP and FB compared with intravenous sedation with midazolam. The PCS method gives stable cardiorespiratory conditions with few adverse events and interventions, with a low risk of oversedation. PCS offers similar (FB) or better (ERCP) procedure feasibility and patient satisfaction during the procedures than midazolam. Recovery after PCS is quick, minimises the risk for prolonged hospitalisation and is thereby a potential cost-saving sedation method. The optimal dose of rectal racemic ketamine, 6 mg/kg with the addition of 0.5 mg/kg midazolam during severely painful procedures, gives minimal risk for outbreaks of pain, offers stable vital signs conditions and allows rapid recovery without affecting procedure feasibility.Conclusions: The sedation method can be adjusted to type of procedure and patient population. PCS with propofol offers an alternative and reliable method for adult sedation during endoscopic procedures, whereas rectal racemic ketamine combined with midazolam provides good conditions for burn care dressing procedures in young children.
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| 2. |
- Kassymova, Gulnara, 1972-
(författare)
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The impact of postoperative telephone follow-up contacts on recovery after benign hysterectomy : with emphasis on health-related quality of life, postoperative symptoms, and health economics
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- BackgroundThe course of a postoperative recovery is important for both patient and healthcare services. Efforts to expedite and improve recovery in a safe and cost-effective manner are therefore highly desirable from the perspective of both parties. Telephone follow-up (TFU) has been suggested as a way to improve postoperative recovery and reduce the burden of the healthcare service. This thesis intends to investigate these issues. The overall purpose of the thesis was twofold: to evaluate the effects of nurse-led TFU contacts on the recovery after benign hysterectomy, and to make a health economic analysis of TFU. The specific aims of the thesis were a) to evaluate whether TFU, particularly when combined with structured-oriented coaching, facilitated postoperative recovery in terms of health-related quality of life (HRQoL), the duration of sick leave, and the occurrence of unplanned telephone contacts (uTCs) and unplanned visits (uVs) in the postoperative period, b) to determine if the TFUs affected postoperative symptoms and the consumption of analgesics, c) to analyze whether symptoms of anxiety and depression, and low stress-coping capacity had an impact on the effect of TFU on recovery and the occurrence of uTCs and uVs, and d) to provide a health economic evaluation of the TFU from the healthcare and societal perspectives. By addressing these aims, the intention of the thesis was to contribute with important knowledge to the existing sparse body of science concerning clinical outcomes after nurse-led TFUs and their impact on recovery outcomes after benign hysterectomy. Material and methodsA four-armed, semi-blinded, randomized controlled trial was conducted at the departments of obstetrics and gynecology in five public hospitals in the southeast health region of Sweden from October 2011 to May 2017. The study comprised 487 women between 18 and 60 years old who underwent abdominal or vaginal hysterectomy for benign gynecological conditions. The treatments to be investigated were different nurse-led TFU models and consisted of four groups: Group A had no planned follow-up contact with the healthcare service after discharge (control group); Group B had one planned, structured TFU session with the research nurse (RN) on the day after discharge; Group C had a planned, structured TFU session with the RN on the day after discharge and then once weekly for six weeks; and Group D had a planned, structured, oriented coaching TFU session with the RN on the day after discharge and then once weekly for six weeks. The specific content of the TFUs in Groups B and C, as well as the oriented coaching TFU model in Group D, were outlined in the study. Demographic and clinical data relevant to the study were collected prospectively. Sick leave duration, analgesic consumption, uTC, and uV were recorded from discharge until the six-week follow-up visit with the RN. HRQoL was measured by means of the EuroQoL-5 Dimension with three levels and the Short Form Health Survey with 36 items. Psychological distress was evaluated using the Hospital Anxiety and Depression Scale and the Stress-Coping Inventory. Postoperative symptoms were assessed using the Swedish Postoperative Symptoms Questionnaire. The health economics were evaluated using a cost minimization analysis. The estimation of hospital costs was based on the principles of the Cost Per Patient (CPP) method and the prices from the CPP list for 2022 from the University Hospital in Linköping were applied. ResultsRegardless of the TFU model, women achieved baseline levels of HRQoL four weeks after surgery and no difference was seen between the intervention groups in the trajectory of recovery of HRQoL. The duration of sick leave was similar across all intervention groups, ranging from 26.8 to 28.1 days. There were no significant differences in the trajectory of the intensity of postoperative symptoms or analgesic consumption between the intervention groups. Approximately 46% of the women had uTC and 45% had uV. The oriented coaching TFU was associated with a 33% lower occurrence of uTC compared with other TFU models. Women who had uTC reported higher levels of pain intensity and sum scores of postoperative symptoms, especially when the uTC was followed by a uV. Symptoms of depression, anxiety, and low stress coping capacity did not affect the effects of the TFU models on recovery trajectories, although there were strong associations between symptoms of anxiety, depression and low stress-coping capacity and all recovery measures. In addition, uTCs were more frequent among women with anxiety. The total costs per patient more than doubled in the groups with repeated TFUs compared with the group with no TFU. The coaching TFU group had lower costs for informal care. ConclusionsNurse-led TFU after benign hysterectomy in the form used in the present study did not expedite or improve the postoperative recovery concerning HRQoL, sick leave duration postoperative symptoms, or analgesic consumption. However, nurse-led TFU with structured coaching reduced the occurrence of uTC to healthcare providers, but not uVs. Symptoms of anxiety increased the occurrence of uTC and pain seemed to be a significant cause of both uTCs and uVs, The effect of the TFU on the recovery did not seem to be affected by the psychological state of proneness to anxiety, depression, or low stress-coping capacity. Nurse-led TFUs were cost-driving for the healthcare systems and can be seen as an inefficient use of healthcare resources.
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| 3. |
- Kask, Lena, et al.
(författare)
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Signatures in in vitro infection of NSC-34 mouse neurons and their cell nucleus with Rickettsia helvetica
- 2023
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Ingår i: BMC Microbiology. - : BioMed Central (BMC). - 1471-2180. ; 23
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Tidskriftsartikel (refereegranskat)abstract
- Background: Rickettsia helvetica, a spotted fever rickettsia, is transmitted to humans via ticks in Europe, North Africa, and Asia. The central nervous system is a crucial target for rickettsial diseases, which has been reported for 12 of the 31 species, of which R. helvetica is one. This study aimed, in an experimental model, to identify characteristics of R. helvetica infection in a mouse neuronal cell line, NSC-34.Results: NSC-34, a fusion cell line of mouse motor spinal cord neurons and neuroblastoma cells, was used as a model. Propagation of R. helvetica in neurons was confirmed. Short actin tails were shown at the polar end of the bacteria, which makes it likely that they can move intracellularly, and even spread between cells. Another protein, Sca4, which with the cell adhesion protein vinculin enables the passage of the cell membrane, was expressed during infection. No significant increase in TNF alpha levels was seen in the infected neurons, which is of interest because TNF alpha protects the host cell from infection-induced apoptotic death which is crucial for host cell survival. The bacteria were also shown to invade and grow in the cell nucleus of the neuron.Conclusions: The findings suggest that a R. helvetica infection may be harmful to NSC-34 neurons under these in vitro conditions, but the full effects of the infection on the cell need to be studied further, also on human neurons, to also understand the possible significance of this infection in relation to pathogenetic mechanisms.
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