Efektifitas Kolektor Energi Surya Pada Konfigurasi Paralel Serpentine

This study aims to demonstrate the effectiveness of the collector on the fluid mass flow rate variations in sunlight collectors on the configuration of the combined \u27parallel-serpentine\u27. Value of the mass flow rate is 0.09, 0.18 and 0.36 ltr/min. Fluid drained from the reservoir of cold water through the collector pipe and into the parallel configuration serpentine configuration and then stored in the hot water tank. The test results showed that the efficiency of a mass flow rate achieved at the optimum 0.36 liter / min. This result is probably leading to suitable for domestic purposes

Renal replacement therapy in acute kidney injury: controversy and consensus

Renal replacement therapies (RRTs) represent a cornerstone in the management of severe acute kidney injury. This area of intensive care and nephrology has undergone significant improvement and evolution in recent years. Continuous RRTs have been a major focus of new technological and treatment strategies. RRT is being used increasingly in the intensive care unit, not only for renal indications but also for other organ-supportive strategies. Several aspects related to RRT are now well established, but others remain controversial. In this review, we review the available RRT modalities, covering technical and clinical aspects. We discuss several controversial issues, provide some practical recommendations, and where possible suggest a research agenda for the future

Errors in patient specimen collection: application of statistical process control.

BACKGROUND: Errors in the collection and labeling of blood samples for pretransfusion testing increase the risk of transfusion-associated patient morbidity and mortality. Statistical process control (SPC) is a recognized method to monitor the performance of a critical process. An easy-to-use SPC method was tested to determine its feasibility as a tool for monitoring quality in transfusion medicine. STUDY DESIGN AND METHODS: SPC control charts were adapted to a spreadsheet presentation. Data tabulating the frequency of mislabeled and miscollected blood samples from 10 hospitals in five countries from 2004 to 2006 were used to demonstrate the method. Control charts were produced to monitor process stability. RESULTS: The participating hospitals found the SPC spreadsheet very suitable to monitor the performance of the sample labeling and collection and applied SPC charts to suit their specific needs. One hospital monitored subcategories of sample error in detail. A large hospital monitored the number of wrong-blood-in-tube (WBIT) events. Four smaller-sized facilities, each following the same policy for sample collection, combined their data on WBIT samples into a single control chart. One hospital used the control chart to monitor the effect of an educational intervention. CONCLUSION: A simple SPC method is described that can monitor the process of sample collection and labeling in any hospital. SPC could be applied to other critical steps in the transfusion processes as a tool for biovigilance and could be used to develop regional or national performance standards for pretransfusion sample collection. A link is provided to download the spreadsheet for free

Continuation of chronic antiplatelet therapy is not associated with increased need for transfusions: a cohort study in critically ill septic patients

Fuchs C, Scheer CS, Wauschkuhn S, et al. Continuation of chronic antiplatelet therapy is not associated with increased need for transfusions: a cohort study in critically ill septic patients. BMC Anesthesiology . 2024;24(1): 146.BACKGROUND: The decision to maintain or halt antiplatelet medication in septic patients admitted to intensive care units presents a clinical dilemma. This is due to the necessity to balance the benefits of preventing thromboembolic incidents and leveraging anti-inflammatory properties against the increased risk of bleeding.; METHODS: This study involves a secondary analysis of data from a prospective cohort study focusing on patients diagnosed with severe sepsis or septic shock. We evaluated the outcomes of 203 patients, examining mortality rates and the requirement for transfusion. The cohort was divided into two groups: those whose antiplatelet therapy was sustained (n=114) and those in whom it was discontinued (n=89). To account for potential biases such as indication for antiplatelet therapy, propensity score matching was employed.; RESULTS: Therapy continuation did not significantly alter transfusion requirements (discontinued vs. continued in matched samples: red blood cell concentrates 51.7% vs. 68.3%, p=0.09; platelet concentrates 21.7% vs. 18.3%, p=0.82; fresh frozen plasma concentrates 38.3% vs. 33.3%, p=0.7). 90-day survival was higher within the continued group (30.0% vs. 70.0%; p0.05).; CONCLUSIONS: The findings suggest that continuing antiplatelet therapy in septic patients admitted to intensive care units could be associated with a significant survival benefit without substantially increasing the need for transfusion. These results highlight the importance of a nuanced approach to managing antiplatelet medication in the context of severe sepsis and septic shock. © 2024. The Author(s)