Fundamentally intertwined: anharmonic intermolecular interactions dictate both thermal expansion and terahertz lattice dynamics in molecular crystals.

We investigate the anisotropic thermal expansion behavior of a co-crystalline system composed of 4,4'-azopyridine and trimesic acid (TMA-azo). Using variable-temperature single-crystal X-ray diffraction (SC-XRD), low-frequency Raman spectroscopy, and terahertz time-domain spectroscopy (THz-TDS), we observe significant temperature-induced shifting and broadening of the vibrational absorption features, indicating changes in the intermolecular potential. Our findings reveal that thermal expansion is driven by anharmonic interactions and the potential energy topography, rather than increased molecular dynamics.

Utility of Quadratus Lumborum Blocks in Patients Who Undergo Liver Transplant: A Single-Center Retrospective Study.

Background: Regional anesthesia is an alternative to opioids for pain in patients undergoing liver transplantation. Quadratus lumborum blocks may provide appropriate dermatomal coverage with an excellent safety profile.

Methods: Data were collected retrospectively on adult patients who underwent liver transplant at an academic medical center from 2019 to 2022 (n = 207).

Reoperation and Perioperative Complications After Surgical Treatment of Cervical Radiculopathy: A Comparison Between Three Procedures.

Study Design: A retrospective database study.

Objective: The purpose of our study was to compare the perioperative complications and reoperation rates after anterior cervical discectomy and fusion (ACDF), cervical disk arthroplasty (CDA), and posterior cervical foraminotomy (PCF) in patients treated for cervical radiculopathy.

Summary Of Background Data: Cervical radiculopathy results from compression or irritation of nerve roots in the cervical spine.

No Significant Differences in Postoperative Complications Between Outpatient and Inpatient Single-level or Multiple-level Cervical Disk Replacement for Cervical Radiculopathy.

Study Design: Retrospective cohort analysis.

Objective: To investigate the safety profile of outpatient versus inpatient single-level and multiple-level cervical disk replacement (CDR) by analyzing one- and two-year surgical outcomes and 90-day medical complications using a large patient database.

Summary Of Background Data: CDR is becoming a more desirable option for patients undergoing cervical spine procedures.

A comparison of pediatric liver transplant anesthesia practices with new organ procurement and transplant network pediatric policy requirements: A report from the society for the advancement of transplant anesthesia and the society for pediatric anesthesia.

Introduction: Organ Procurement and Transplant Network (OPTN) pediatric policies on knowledge and skill requirements for key personnel failed to address the Director of Anesthesia for Pediatric Liver Transplantation. A Joint Committee representing the Society for the Advancement of Transplant Anesthesia and Society for Pediatric Anesthesia (SPA) surveyed all pediatric anesthesia liver transplant practices to determine if practices were aligned with policies and what changes would be needed for compliance.

Methods: A survey of the Director or equivalent at each program collected data about specialized knowledge and skill sets.

Impact of human immunodeficiency virus on 2-year revision rates following lumbar fusion for degenerative spinal conditions: a retrospective cohort study.

Background: To our knowledge, no studies exist that evaluate the impact of human immunodeficiency virus (HIV) on long-term revision rates following lumbar fusion. This study aims to understand how HIV impacts 2-year revision rates and 90-day postoperative complication rates following primary lumbar fusion for degenerative spine conditions.

Methods: Data collection was done using PearlDiver Patient Records Database, a national insurance database from 2010-2019.

Association of Bleeding Disorders and Risk of Complications Following Open Reduction and Internal Fixation of the Ankle.

Background: Open reduction and internal fixation (ORIF) of the ankle is a common procedure performed to correct ankle fractures in many different patient populations. Diabetes, peripheral vascular disease, and osteoporosis have been identified as risk factors for postoperative complications following surgery for ankle fractures. To date, there have not been any studies evaluating postoperative outcomes in patients with bleeding disorders undergoing operative treatment for ankle fractures.

Impact of sickle cell disease on postoperative outcomes following total hip arthroplasty.

Introduction: Osteonecrosis (ON) of the femoral head is a common complication of sickle cell disease (SCD), frequently necessitating total hip arthroplasty (THA). Although THA is a common procedure with few complications when indicated for osteoarthritis (OA), patients with SCD have increased rates of complications. The purpose of this study is to determine the impact of SCD on outcomes and complications following THA.

Adult liver transplant anesthesiology practice patterns and resource utilization in the United States: Survey results from the society for the advancement of transplant anesthesia.

Introduction: Liver transplant anesthesiology is an evolving and expanding subspecialty, and programs have, in the past, exhibited significant variations of practice at transplant centers across the United States. In order to explore current practice patterns, the Quality & Standards Committee from the Society for the Advancement of Transplant Anesthesia (SATA) undertook a survey of liver transplant anesthesiology program directors.

Methods: Program directors were invited to participate in an online questionnaire.

Cirrhotic Cardiomyopathy and Cardiac Failure after Liver Transplantation: A Case Series.

Preoperative cardiac functional assessment has been a long-debated topic in liver transplantation. Debate continues to exist regarding the use of invasive cardiac studies, and the utility of each prior to transplant. Despite the debate, a 7% mortality can be attributed to significant cardiac events.

Conversion total knee arthroplasty: A case complexity between primary and revision total knee arthroplasty.

Background: Conversion total knee arthroplasty (TKA) may represent a more complex procedure compared with primary TKA. The purpose of this study was to compare 30-day complications between conversion TKA and primary, non-conversion TKA as well as between conversion TKA and revision TKA on a national scale using a multi-center surgical registry.

Methods: Adult patients undergoing conversion TKA from 2006 to 2018 were identified in the National Surgical Quality Improvement Program database and were compared with patients who underwent primary TKA and aseptic revision TKA.

Impact of Anesthesiologist Experience on Early Outcomes in Adult Orthotopic Liver Transplantation.

Background: Liver transplantation is a complex surgical procedure. The experience of the anesthesiologist, and its potential relationship to patient morbidity and mortality, is yet to be determined. We sought to explore this possible association using our institutional training patterns as the subject of study.

Intraoperative vasopressors in head and neck free flap reconstruction.

Introduction: Historically, there were concerns vasopressors impair free flap outcomes, but recent studies suggest vasopressors are safe. Here we investigate this controversy by (1) evaluating vasopressors' effect on head and neck free-flap survival and surgical complications, and (2) performing soft tissue and bony subset analysis.

Patients And Methods: Post hoc analysis was performed of a single-blinded, prospective, randomized clinical trial at a tertiary care academic medical center involving patients ≥18 years old undergoing head and neck free flap reconstruction over a 16-month period.

Total Hip Arthroplasty for the Sequelae of Femoral Neck Fractures in the Pediatric Patient.

Although rare, total hip arthroplasty (THA) may be indicated in pediatric patients with degenerative changes of the hip joint after previous trauma. To illustrate management principles in this patient population, this study describes the case of a 15-year-old female who sustained bilateral femoral neck fractures after a generalized tonic-clonic seizure, an atypical, low-energy mechanism for this injury. These fractures were not diagnosed until 14 weeks after the seizure episode, at which point they had progressed to nonunion on the left side, malunion on the right side, and degenerative hip joint changes were developing bilaterally.

Service Requirements of Liver Transplant Anesthesia Teams: Society for the Advancement of Transplant Anesthesia Recommendations.

There are disparities in liver transplant anesthesia team (LTAT) care across the United States. However, no policies address essential resources for liver transplant anesthesia services similar to other specialists. In response, the Society for the Advancement of Transplant Anesthesia appointed a task force to develop national recommendations.

The endolithic bacterial diversity of shallow bedrock ecosystems.

Terrestrial subsurface microbial communities are not restricted to the fluid-filled void system commonly targeted during groundwater sampling but are able to inhabit and dwell in rocks. However, compared to the exploration of the deep biosphere, endolithic niches in shallow sedimentary bedrock have received little interest so far. Despite the potential contribution of rock matrix dwellers to matter cycling and groundwater resource quality, their identity and diversity patterns are largely unknown.

Two cases of combined patellar tendon avulsion from the tibia and patella.

Avulsion fractures of the inferior pole of the patella and proximal tibial apophysis are independently rare injuries. They occur in children due to the relative weakness of the apophyseal cartilage compared to the ligaments and tendons. The combination of these two fractures, is exceedingly rare, with only a few previously described cases in the literature.

Archaeal Diversity and CO Fixers in Carbonate-/Siliciclastic-Rock Groundwater Ecosystems.

Groundwater environments provide habitats for diverse microbial communities, and although Archaea usually represent a minor fraction of communities, they are involved in key biogeochemical cycles. We analysed the archaeal diversity within a mixed carbonate-rock/siliciclastic-rock aquifer system, vertically from surface soils to subsurface groundwater including aquifer and aquitard rocks. Archaeal diversity was also characterized along a monitoring well transect that spanned surface land uses from forest/woodland to grassland and cropland.

Use of intra-aortic counterpulsation in cardiogenic shock post-liver transplantation.

Left ventricular dysfunction resulting in cardiogenic shock occurs infrequently following organ reperfusion in liver transplantation. The etiology of the cardiogenic shock is often multifactorial and difficult to manage due to the complex nature of the procedure and the patient's baseline physiology. Traditionally, this hemodynamic instability is managed medically using inotropic agents and vasopressor support.

Utility of the Surgical Apgar Score in Kidney Transplantation: Is it Feasible to Predict ICU Admission, Hospital Readmission, Length of Stay, and Cost in This Patient Population?

Background: This study analyzed the utility of the Surgical Apgar Scoring (SAS) system in predicting morbidity in kidney transplantation. Recipient comorbidities were evaluated for any effect on the SAS and then globally assessed for any relationship with intensive care unit (ICU) admission, need for dialysis, creatinine at discharge, length of stay, incremental, and total cost of transplantation. The hypothesis for this study is that a low SAS will be a statistically significant predictor of postoperative morbidity and associated costs.

Motor/Prefrontal Transcranial Direct Current Stimulation (tDCS) Following Lumbar Surgery Reduces Postoperative Analgesia Use.

Study Design: Randomized, controlled pilot trial.

Objective: The present study is the first randomized, double-blind, sham-controlled pilot clinical trial of transcranial direct current stimulation (tDCS) for pain and patient-controlled analgesia (PCA) opioid usage among patients receiving spine surgery.

Summary Of Background Data: Lumbar spinal surgeries are common, and while pain is often a complaint that precedes surgical intervention, the procedures themselves are associated with considerable postoperative pain lasting days to weeks.

Intraoperative goal-directed hemodynamic management in free tissue transfer for head and neck cancer.

Background: The purpose of this study was to determine the effect of algorithmic physiologic management on patients undergoing head and neck free tissue transfer and reconstruction.

Methods: Ninety-four adult patients were randomized to treatment and control groups. The blood pressure of the control group was managed consistent with contemporary standards.

Utilization of Intraoperative TEE to Assess Supraventricular Tachycardia-Inducing Right-Sided Cardiac Compression by the Liver, Post-Liver-Transplantation Status.

This unique and interesting case report involves a patient who recently underwent a combined liver and kidney transplant (due to autosomal dominant polycystic kidney disease) and subsequently suffered from episodes of supraventricular tachycardia (SVT) secondary to the new liver graft compressing the right atrium and ventricle. After this was diagnosed, the patient underwent operative plication of the right hemidiaphragm. Intraoperative transesophageal echocardiography was used to demonstrate cardiac compression from the liver and demonstrate resolution of compression after plication of the hemidiaphragm.