Transient cortical weakness following cerebral angiography: A new syndrome.

Transient cortical blindness is a known complication of iodinated contrast administration and is believed to reflect osmotic injury or autoregulatory dysfunction of the posterior circulation. Here, we report 2 cases of postangiography transient cortical weakness, a rare clinical analog to transient cortical blindness that affects the anterior circulation. The symptoms, timeline, and imaging findings of transient cortical weakness are distinct from more common post-procedural complications such as acute ischemic stroke or transient ischemic attack.

The Impact of COVID on Health Systems: The Workforce and Telemedicine Perspective.

The COVID-19 pandemic significantly strained global health systems, leading to the rapid adoption of telemedicine and changes in workforce management. Previously underused, telemedicine became an essential means of delivering healthcare while adhering to physical distancing guidelines. This transition addressed longstanding barriers like connectivity issues. Simultaneously, the radiology sector innovated by widely implementing remote reading stations, which helped manage exposure risks and conserve human resources. Moreover, the pandemic highlighted the critical role of technological advancements beyond telemedicine, such as the accelerated integration of AI in diagnostics and management. This article examines these comprehensive effects, emphasizing the remote work adaptations and innovations in healthcare systems that have reshaped both healthcare delivery and workforce dynamics during the pandemic.

The Financial Impact of COVID on Radiology Health Systems.

The coronavirus pandemic of 2019 (COVID-19) was arguably the most pivotal global event that current generations have witnessed, with unprecedented global challenges, and colossal effects on health systems. The financial consequences, in particular, were profound and far-reaching. Staggering estimates of up to $50.7 billion dollars per month in lost revenue for the US health system were reported by the American Hospital Association (Kaye et al., 2021). The pandemic caused significant increases in cost of drugs, disruptions to medical supply chains, day-to-day workflow, and operations in all areas of medicine and various healthcare systems. Radiology experienced a significant burden of the damage, finding itself at the forefront of the pandemic's economic fallout (American Hospital Association).

Social Vulnerability and Location of Death in Heart Failure in the United States.

Majority of patients with heart failure (HF) die in either nursing homes or inpatient facilities. Social vulnerability captures multiple domains of socioeconomic position and has been linked with higher HF mortality. We sought to investigate the trends in location of death in patients with HF and its association with social vulnerability. We utilized the multiple cause of death files from the United States (1999-2021) to identify decedents with HF as the underlying cause of death and linked them with county-level social vulnerability index (SVI) available from CDC/ATSDR database. Approximately 1.7 million HF deaths were examined across 3003 United States counties. Most patients (63%) died in a nursing home or inpatient facility, followed by home (28%), and only 4% died in hospice. Death at home had a positive correlation with higher SVI with Pearson's r = 0.26 (P < 0.001) as well as deaths in an inpatient facility r = 0.33 (P < 0.001). Death in a nursing home correlated negatively with SVI with r = -0.46 (P < 0.001). There was no association between hospice utilization and SVI. Locations of death were varied by geographic residence. More patients died at home during the COVID-19 pandemic (OR 1.39, P < 0.001). Social vulnerability was associated with location of death in patients with HF in the US. These associations varied by geographic location. Future studies should focus on social determinants of health and end-of-life care in HF.

Wide QRS Complex Transient Pattern in a Patient With Severe COVID-19.

This case report describes a patient in their 60s with shortness of breath who tested positive for COVID-19.

Large hepatic biloma after bland hepatic arterial embolization using antireflux catheter.

To our knowledge, there have been no previous reports of biliary injury or bilomas due to microvalve infusion catheters (Trinav Infusion System; Westminster, CO). Here, we describe an interesting case of large hepatic biloma following bland hepatic arterial embolization with an antireflux catheter.

Computed Tomography Angiography and Conventional Angiography for the Diagnosis and Treatment of Non-variceal Gastrointestinal Bleeding at a Tertiary Cancer Center.

INTRODUCTION: To evaluate the diagnostic value of computed tomography angiography (CTA) and conventional angiography (CA) and the therapeutic value of transarterial embolization for acute gastrointestinal bleeding in patients with malignancy. METHODS: A retrospective review of 100 patients who underwent CTA and/or CA for gastrointestinal bleeding at a comprehensive cancer center between the years 2011-2021 was performed. Clinical and patient outcome data were collected and analyzed using Kruskal-Wallis tests for continuous variables and chi-square tests or Fisher's exact tests (whichever is appropriate) for categorical variables in univariate analysis. All tests were two-sided at a significance level of 0.05. Analyses were performed using SAS version 9.4 (SAS Institute, Cary, NC). RESULTS: Fifty-two percent of our patients underwent CTA alone, 29% underwent CA alone, and 19% underwent both procedures. Overall, CTA was positive in 11.3% (8/71) of patients and CA was positive in 22.9% (11/38) of patients. Of patients who underwent both studies, 52.6% (10/19) were positive for both. ICU admission was associated with CTA and/or CA positivity (p=0.015). Of 48 patients with data for embolization, 50% of patients underwent transarterial embolization for bleeding, 11 patients had identifiable bleeding on CA, and 13 patients underwent prophylactic embolization at the site of suspected bleeding. Rebleeding following embolization was found in 33.3% (8/24) of patients, including six patients who underwent prophylactic embolization and two patients who were treated for visualized bleeding. CONCLUSION: CTA and CA are two critical studies for patients with GI bleeding and a history of malignancy. Neither alone can effectively exclude an identifiable source of bleeding. In patients with a history of malignancy, transarterial embolization may be an effective treatment of both angiographically visible and occult sources of GI bleeding.

A report of 2 cases of the use of the Inari FlowTriever System in the treatment of pulmonary embolism.

The FlowTriever System (Inari Medical, Irvine, California) is the first FDA-approved mechanical thrombectomy device used for treatment of pulmonary embolism. This device enables nonsurgical removal of pulmonary blood clots without the use of thrombolytic medication and its associated risks. We report 2 cases of successful application of the Inari FlowTriever in treatment of pulmonary embolism and right atrial thrombus.

Rhabdomyolysis and the Use of Low-Dose Amphetamine.

Rhabdomyolysis ranges from being asymptomatic with elevated creatine kinase (CK) to a potentially life-threatening condition involving multiple organ systems. Muscular trauma is the most common cause, followed by enzyme deficiencies, electrolyte abnormalities, drugs, toxins, and endocrinopathies. While these risk factors are delineated, it is not clear if mild exposure to a combination of risk factors could lead to the development of rhabdomyolysis. In this case report, a 22-year-old male of Pakistani/Caucasian ethnicity presented to the emergency room with myalgias and tea-colored urine after starting a new exercise program. His serum CK level and liver function tests were significantly elevated. He was successfully treated for acute rhabdomyolysis with aggressive hydration. However, the etiology of his condition was not clear given that his exercise was not considered vigorous. The only plausible explanation for his symptoms included the use of prescribed dextroamphetamine, which may have exacerbated the physiologic responses induced by exercise. This report describes a novel case in which a patient may have developed recurrent episodes of rhabdomyolysis due to low-dose dextroamphetamine use. The combination of exercise and dextroamphetamine use may predispose patients to develop rhabdomyolysis.

A novel approach to describing the pancreas and submandibular gland: Can they be classified as primary and secondary tissue organs?

Our aim is to examine the relationship between the submandibular gland (SMG) and the pancreas by discussing similarities and differences in their embryology, histology, physiology, and pathology, and to introduce the question of classifying them as primary or secondary organs. From an embryonic standpoint, SMG and pancreas originate from different germ layers, yet they share a variety of similar elements in their morphogenesis, branching process, and mesenchymal molecular interaction. The histological and anatomical comparison between these two organs reveals parallels in the basic function of their exocrine physiology. With both the SMG and pancreas playing a significant role in digestive processes, there are also common aspects in their exocrine function. Furthermore, recent research has unraveled an intricate novel system of hormonal interaction between the salivary glands and pancreas which regulates pancreatic cellular differentiation and injury repair mechanism. Lastly, there are analogous features in the pathological mechanisms and inflammatory processes in the course of chronic disease in both organs. By defining this close relationship between the SMG and the pancreas, we aim to provide alternative insights for scholars and physicians in the shared characteristics of basic function of these organs, and possible pathological consequences of their dysregulation.

Challenges in managing ST elevation myocardial infarction during the COVID-19 pandemic.

BACKGROUND: Coronavirus disease 2019 (COVID-19) may contribute to delayed presentations of acute myocardial infarction. Delayed presentation with late reperfusion is often associated with an increased risk of mechanical complications and adverse outcomes. Inherent delays are possible as every patient who is acutely sick is being considered a potential case or a career of COVID-19. Also, standardized personal protective equipment precautions are established for all members of the team, regardless of pending COVID-19 testing which might further add to delays. AIM: To compare performance measures and clinical outcomes of all patients who presented to our facility with ST elevation myocardial infarction (STEMI) during the COVID-19 pandemic to same time cohort from 2019. METHODS: All patients who presented to our facility with STEMI during the pandemic were compared to a matched cohort during the same time period in 2019. STEMI with unknown time of symptom onset and inpatient STEMI patients were excluded. Primary outcome was major adverse cardiac events (MACE) in-hospital and up to 14 d after STEMI, including death, myocardial infarction, cardiac arrest, or stroke. Significant differences among groups for continuous variables were tested through ANOVA, using SYSTAT, version 13. Chi-square tests of association were used to compare patient characteristics among groups using SYSTAT. Relative risk scores and associated tests for significance were calculated for discrete variables using MedCalc (MedCalc Software, Ostend, Belgium). RESULTS: There was a significantly longer time interval from symptom onset to first medical contact (FMC) in the COVID-19 group (P < 0.02). Time to first electrocardiogram, door-to-balloon time, and FMC to balloon time were not significantly affected. The right coronary artery was the most common culprit for STEMI in both the cohorts. Over 60% of patients had one or more obstructive (> 50%) lesion(s) remote from the culprit site. In-hospital and 14 d MACE were more prevalent in the COVID-19 group (P < 0.01 and P < 0.001). CONCLUSION: This single academic center study in the United States suggests that there is a delay in patients with STEMI seeking medical attention during the COVID-19 pandemic which could be translating into worse clinical outcomes.

Palliative Care Consultation Affects How and Where Heart Failure Patients Die.

OBJECTIVE: Determine the role of palliative care on terminal code status and setting of death for those with heart failure. BACKGROUND: Although palliative care consultation (PCC) has increased for many conditions, PCC has not increased in those with cardiovascular disease. While it has been shown that the majority of those with heart failure die in medical facilities, the impact of PCC on terminal code status and setting of death requires further analysis. METHODS: Patients admitted with heart failure between 2014-2015 at an academic VA Healthcare System were reviewed. Primary outcome was terminal code status. Secondary outcomes included setting of death, hospice utilization, and mortality scores. Student t-testing and Chi-square testing were performed where appropriate. RESULTS: 334 patients were admitted with heart failure and had a median follow up time of 4.3 years. 196 patients died, with 122 (62%) receiving PCC and 74 (38%) without PCC. Patients were more likely to have terminal code statuses of comfort measures with PCC (OR = 4.6, p = 0.002), and less likely to be full code (OR = 0.09, p < 0.001). 146 patients had documented settings of death and were more likely to receive hospice services with PCC (OR 6.76, p < 0.001). A patient's chance of dying at home was not increased with PCC (OR 0.49, p = 0.07), but they were more likely to die with inpatient hospice (OR = 17.03; p < 0.001). CONCLUSION: Heart failure patients who received PCC are more likely to die with more defined care preferences and with hospice services. This does not translate to dying at home.

Development of multi-pixel x-ray source using oxide-coated cathodes.

Multiple pixel x-ray sources facilitate new designs of imaging modalities that may result in faster imaging speed, improved image quality, and more compact geometry. We are developing a high-brightness multiple-pixel thermionic emission x-ray (MPTEX) source based on oxide-coated cathodes. Oxide cathodes have high emission efficiency and, thereby, produce high emission current density at low temperature when compared to traditional tungsten filaments. Indirectly heated micro-rectangular oxide cathodes were developed using carbonates, which were converted to semiconductor oxides of barium, strontium, and calcium after activation. Each cathode produces a focal spot on an elongated fixed anode. The x-ray beam ON and OFF control is performed by source-switching electronics, which supplies bias voltage to the cathode emitters. In this paper, we report the initial performance of the oxide-coated cathodes and the MPTEX source.

Safety and effectiveness of varenicline in a veteran population with a high prevalence of mental illness.

BACKGROUND: Varenicline is a selective nicotinic receptor partial agonist used to aid in the process of smoking cessation. Research on varenicline's approval for marketing demonstrated that after 12 weeks of treatment, at least 44% of patients successfully quit smoking and, on average, 13% of individuals discontinued therapy due to an adverse drug event (ADE). Growing postmarketing data linked varenicline to an increase in neuropsychiatric symptoms. OBJECTIVE: To evaluate the safety profile, specifically psychiatric symptoms, and effectiveness of varenicline in a veteran population and to determine whether there is an association among specific baseline demographics and success rate. METHODS: The study was a retrospective review of a prospective performance measure involving veterans initiated on varenicline. Patients were contacted via telephone throughout treatment and at week 12 for effectiveness follow-up. Smoking history was obtained and medication counseling was provided. The primary endpoint was tobacco cessation between weeks 9 and 12 of therapy. Varenicline's safety profile and discontinuation rates due to ADEs were also analyzed. RESULTS: Of the 50 patients included in the study, 30% (n = 15) successfully quit smoking and 70% (n = 35) failed therapy (lack of effectiveness, n = 22; intolerability, n = 13). Prevalence of underlying mental illness in the success group (4/15; 27%) versus failure group (20/35; 57%) was statistically significant (p < 0.001). All patients who discontinued therapy due to an increase in mood and behavioral changes (n = 4) had an underlying psychiatric illness. The study results demonstrate a lower success rate and a higher incidence of discontinuation due to an ADE in our veteran population compared with premarketing data. An inverse association was shown between psychiatric disorders and success. CONCLUSIONS: Cautious treatment initiation and close monitoring of veterans initiated on varenicline are warranted. Furthermore, the results from this study demonstrate the need for prospective effectiveness trials to determine the clinical significance of the results.