mRNA-Based Genetic Reprogramming.

The discovery that ordinary skin cells can be turned into pluripotent stem cells by the forced expression of defined factors has raised hopes that personalized regenerative treatments based on immunologically compatible material derived from a patient's own cells might be realized in the not-too-distant future. A major barrier to the clinical use of induced pluripotent stem cells (iPSCs) was initially presented by the need to employ integrating viral vectors to express the factors that induce an embryonic gene expression profile, which entails potentially oncogenic alteration of the normal genome. Several "non-integrating" reprogramming systems have been developed over the last decade to address this problem. Among these techniques, mRNA reprogramming is the most unambiguously "footprint-free," most productive, and perhaps the best suited to clinical production of stem cells. Herein, we discuss the origins of the mRNA-based reprogramming system, its benefits and drawbacks, recent technical improvements that simplify its application, and the status of current efforts to industrialize this approach to mass-produce human stem cells for the clinic.

AngioVac Procedures: Integration of cardiac surgeon and anesthesiologist-led transesophageal echocardiography: A preliminary report.

Introduction: The AngioVac system is a novel, minimally invasive, endovascular technique used to evacuate intravascular or intracardiac vegetation or thrombus. Although most AngioVac procedures are currently performed by interventionalists, this innovative procedure has been gaining attention among the surgical and anesthesia communities. Methods: We retrospectively reviewed all patients who underwent the AngioVac procedure performed by a cardiac surgeon between August 2019 and December 2022. Fellowship-trained cardiac anesthesiologists operated TEE to navigate the AngioVac cannula during the procedure. The stored TEE images were retrospectively reviewed and independently analyzed by two cardiac anesthesiologists with specific focus on TEE-guided navigation of the AngioVac cannula towards the aspiration target. Results: Eleven patients underwent the AngioVac procedure during the study period. In nine cases, the majority of the vegetation or thrombus was successfully aspirated. In two cases, incomplete aspiration was attributed to the mass burden being too large, firm, and chronic in etiology. Worsening tricuspid regurgitation (TR) was identified in three of the 11 cases. Intraoperative TEE provided the cardiac surgeon with simultaneous display of the AngioVac cannula shaft, its tip, and aspiration target, as well as real-time assessment of TR, facilitating the minute movements essential for successful outcomes. Conclusions: This study details our experience and the effectiveness of the AngioVac system for treating soft, intracardiac vegetation or thrombus in a minimally invasive manner. Experienced cardiac anesthesiologists have the skillsets and knowledge to provide optimal live TEE imaging necessary for successful maneuvering of the AngioVac cannula.

Use of herbal medication in the perioperative period: Potential adverse drug interactions.

Use of herbal medications and supplements has experienced immense growth over the last two decades, with retail sales in the USA exceeding $13 billion in 2021. Since the Dietary Supplement Health and Education Act (DSHEA) of 1994 reduced FDA oversight, these products have become less regulated. Data from 2012 shows 18% of U.S. adults used non-vitamin, non-mineral natural products. Prevalence varies regionally, with higher use in Western states. Among preoperative patients, the most commonly used herbal medications included garlic, ginseng, ginkgo, St. John's wort, and echinacea. However, 50-70% of surgical patients fail to disclose their use of herbal medications to their physicians, and most fail to discontinue them preoperatively. Since herbal medications can interact with anesthetic medications administered during surgery, the American Society of Anesthesiologists (ASA) and the American Association of Nurse Anesthetists (AANA) recommend stopping herbal medications 1-2 weeks before elective surgical procedures. Potential adverse drug effects related to preoperative use of herbal medications involve the coagulation system (e.g., increasing the risk of perioperative bleeding), the cardiovascular system (e.g., arrhythmias, hypotension, hypertension), the central nervous system (e.g., sedation, confusion, seizures), pulmonary (e.g., coughing, bronchospasm), renal (e.g., diuresis) and endocrine-metabolic (e.g., hepatic dysfunction, altered metabolism of anesthetic drugs). During the preoperative evaluation, anesthesiologists should inquire about the use of herbal medications to anticipate potential adverse drug interactions during the perioperative period.

Determining the Factors that Impede or Facilitate the Utilization of Telemedicine (Video Visits) for Geriatric Patients.

Objective: The objective of the study was to evaluate the barriers and facilitators of telemedicine utilization experienced by geriatric patients at the University of Iowa Family Medicine Clinic and selected Senior Living Communities in Iowa City, to inform recommendations for improving the telemedicine delivery process for older adults. Methods: The study population was elderly patients (65-85 years old) living independently, and in long-term care facilities, who received health care using telemedicine during the period of the study from March to July 2020. A Mixed Methods study design was utilized with qualitative data collected through semistructured telephone and Zoom interviews and quantitative data through surveys. Results: A total of 33 study participants (n = 33) were interviewed or surveyed, including 3 patients (n = 3), 4 caregivers (n = 4), 19 physicians (n = 19), 5 medical assistants (n = 5), and 2 schedulers (n = 2). The results showed that geriatric patients and their caregivers, as well as health and nonhealth care personnel experience barriers, including difficulty navigating technology, privacy concerns, and lack of technical support; and facilitators, such as customer service support and having protocols to guide patients on telemedicine use. Conclusion: Geriatric patients face certain barriers and facilitators (self-identified or identified by their caregivers, physicians, and other health and nonhealth care personnel) that can make it either more or less difficult for them to maximize the benefits of telemedicine. As a result, health systems should consider older adults' needs and preferences when implementing telemedicine systems in outpatient settings.

Challenges for Emergent Combined Cesarean Delivery and Type A Aortic Dissection Repair Including Bleeding Management in the Setting of Full Heparinization: A Case Report.

Type A aortic dissection is rare in young females; however, it is associated with a high mortality rate. This case report describes a 30-year-old female at 38 weeks of gestation who presented with acute onset chest pain and hypotension responsive to intravenous fluid therapy. Transthoracic echocardiogram and chest computed tomography angiography confirmed a type A aortic dissection. The patient was transported urgently to the operating room for a Cesarean section and aortic dissection repair. Following induction of general anesthesia, the baby was delivered, oxytocin infusion was started, and a Bakri balloon was placed in the uterus. On cardiopulmonary bypass with circulatory arrest, the ascending aorta and aortic valve were repaired. Multiple uterotonic agents were required intraoperatively to manage persistent uterine bleeding in the setting of full heparinization. Both mother and baby survived without major complications. Preoperative management should focus on maternal hemodynamic control while completing a diagnostic evaluation. Intraoperative considerations include minimizing fetal exposure to medication, maintaining hemodynamic stability, and managing intraoperative blood loss in the setting of full anticoagulation.