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Byeonggwan Noh,Lee Nuri,Lee Jae Il,윤명희 대한이식학회 2021 Korean Journal of Transplantation Vol.35 No.4
Intracranial hemorrhage (ICH) following liver transplantation is a potentially devastating complication. Although hypertension and thrombocytopenia are well-known risk factors for ICH in the general population, their roles in ICH after liver transplantation have not been well established. ICH occurred in two patients with alcoholic cirrhosis after deceased donor liver transplantation. A 38-year-old man presented with acute ICH in the right parietal lobe on day 16 after transplantation, with decreased level of consciousness and seizure. His mental status improved with immediate neurological treatment without surgery. In the second case, a 42-year-old woman had acute ICH in the left frontoparietal lobes on day 9 after transplantation, with generalized tonic-clonic seizures. Urgent cerebral decompression was performed. The patient’s neurological symptoms gradually recovered. In both cases, the blood platelet count was less than 50,000/mm3. Monitoring cerebral pressure for ICH is an invasive and challenging method, especially in patients with cirrhosis who have issues with hemostasis. Surgeons should be critically mindful of the risk of rapid neurological deterioration in patients with cirrhosis. Careful neurologic examination and immediate treatment to lower intracranial pressure for ICH after liver transplantation in patients with alcoholic cirrhosis are very important.
Shape-Adaptable 2D Titanium Carbide (MXene) Heater
Park, Tae Hyun,Yu, Seunggun,Koo, Min,Kim, Hyerim,Kim, Eui Hyuk,Park, Jung-Eun,Ok, Byeori,Kim, Byeonggwan,Noh, Sung Hyun,Park, Chanho,Kim, Eunkyoung,Koo, Chong Min,Park, Cheolmin American Chemical Society 2019 ACS NANO Vol.13 No.6
<P>Prior to the advent of the next-generation heater for wearable/on-body electronic devices, various properties are required, including conductivity, transparency, mechanical reliability, and conformability. Expansion to two-dimensional (2D) structure of metallic nanowires based on network- and mesh-type geometries has been widely exploited for realizing these heaters. However, the routes led to many drawbacks such as the low-density cross-bar linking, self-aggregation of wire, and high junction resistance. Although 2D carbon nanomaterials such as graphene and reduced graphene oxide (rGO) have shown their potentials for the purpose, CVD-grown graphene with sufficiently high conductivity was limited due to its poor processability for large-area applications, while rGO fabricated with a complex reduction process involving the use of toxic chemicals suffered from a low electrical conductivity. In this study, we demonstrate a simple and robust process, utilizing electrostatic assembling of negatively charged MXene flakes on a positively treated surface of substrate, for fabricating a metal-like 2D MXene thin film heater (TFH). Our TFH showed a high optical property (>65%), low sheet resistance (215 ?/sq), fast electrothermal response (within dozens of seconds) with an intrinsically high electrical conductivity, and mechanical flexibility (up to 180? bending). Its capability for forming a firm and stable ionic-type interface with a counterpart surface allows us to develop a shape-adaptable and patchable thread heater (TH) that can be shaped on diverse substrates even under harsh conditions of conventional sewing or weaving processes. This work suggests that our shape-adaptable MXene heaters are potentially suitable not only for wearable devices for local heating and defrosting but also for a variety of emerging applications of soft actuators and wearable/flexible healthcare monitoring and thermotherapy.</P> [FIG OMISSION]</BR>