CNN-LSTM vs. LSTM-CNN to Predict Power Flow Direction: A Case Study of the High-Voltage Subnet of Northeast Germany.

The massive installation of renewable energy sources together with energy storage in the power grid can lead to fluctuating energy consumption when there is a bi-directional power flow due to the surplus of electricity generation. To ensure the security and reliability of the power grid, high-quality bi-directional power flow prediction is required. However, predicting bi-directional power flow remains a challenge due to the ever-changing characteristics of power flow and the influence of weather on renewable power generation. To overcome these challenges, we present two of the most popular hybrid deep learning (HDL) models based on a combination of a convolutional neural network (CNN) and long-term memory (LSTM) to predict the power flow in the investigated network cluster. In our approach, the models CNN-LSTM and LSTM-CNN were trained with two different datasets in terms of size and included parameters. The aim was to see whether the size of the dataset and the additional weather data can affect the performance of the proposed model to predict power flow. The result shows that both proposed models can achieve a small error under certain conditions. While the size and parameters of the dataset can affect the training time and accuracy of the HDL model.

Surgeon administered transversus abdominis plane block: anatomic principles and technique.

The Transversus Abdominis Plane (TAP) block is a regional abdominal wall block that has been effectively used as an adjunct to alleviate postoperative pain. The ultrasound-guided TAP (USTAP) administered by anesthesiologists is the gold standard and has been effective for surgeries involving abdominal wall incisions. Recently, the TAP block has been administered by surgeons with the help of direct visualization during minimally invasive surgery. The surgeon-administered or laparoscopic-guided TAP block has been compared to the USTAP with no discernible difference in patient outcomes. Also, directly visualizing the injection in the surgeon-administered block can offset complications such as visceral injury and block failure (injectate in the wrong plane). This review explores the literature's surgeon-administered TAP blocks for minimally invasive surgery in the literature. In addition, the prerequisite anatomy of the anterolateral abdominal wall, various approaches, and other factors that influence the efficacy of the block are described to increase awareness of this analgesic tool among surgeons and achieve better postoperative pain management.

Thrombosis of Bilateral Profunda Femoris, Anterior Tibial, and Tibioperoneal Arteries in a Patient With COVID-19 Infection.

COVID-19, also known as severe acute respiratory distress syndrome coronavirus 2, mostly affects the respiratory system causing acute respiratory syndrome. It not only targets lungs but also causes vascular endothelial disruption, which can lead to arterial or venous thrombosis causing ischemia, which increases the morbidity and mortality in some patients, if not recognized and treated in a timely manner. We present an interesting case of a patient recovering from COVID-19 pneumonia , who developed bilateral foot ischemia due to thrombosis of bilateral profunda femoris, bilateral anterior tibial, and tibioperoneal arteries. A 44-year-old gentleman presented to the emergency department complaining of severe bilateral foot pain, which progressively got worse. Upon examination he had blue toes bilaterally with absent dorsalis pedis and posterior tibial pulse. CT angiogram was performed, which showed severe multilevel lower limb arterial occlusions involving bilateral profunda femoris, bilateral anterior tibial, and tibioperoneal arteries. The patient was initially thrombolyzed and later underwent thrombectomy with the assistance of interventional radiologist. Hospital course was uneventful, and the patient was discharged on warfarin following complete resolution of symptoms.