How much flow is enough: the use of fractional flow reserve in chronic limb-threatening ischemia in a series of patients with isolated occlusive tibial disease.

The role of the fractional flow reserve to guide lower extremity peripheral vascular intervention, specifically in chronic limb-threatening ischemia, has remained unclear. This series presents a novel use of the fractional flow reserve in four patients to guide lower extremity endovascular interventions in patients with chronic limb-threatening ischemia.

Heterogeneity in the prevalence of premature hypertension among Asian American populations compared with white individuals: A National Health Interview Survey study.

Background: Differences in prevalence of risk factors such as hypertension may explain heterogeneity in cardiovascular risk across Asian American populations.

Methods: We used National Health Interview Survey (NHIS) data from 2006 to 2018 among White, Chinese, Asian Indian, Filipino, and 'other Asians' (Japanese, Korean, and Vietnamese). Unadjusted and adjusted odds ratios (aOR) with 95% confidence intervals were reported using logistic regression models for the association between race and self-reported premature hypertension (age <50 years old).

Correlation between great saphenous length of treatment zone and diameter with improvement in symptoms after ablation.

Objective: The aim of the present study was to examine the relationship between the great saphenous vein (GSV) length of segment ablated and diameter with symptom improvement.

Methods: Data from a multicenter, randomized, controlled prospective study of 242 patients undergoing radiofrequency ablation (RFA) or cyanoacrylate closure (CAC) of the GSV were analyzed. The venous clinical severity score (VCSS) was measured at baseline and at 1, 3, 6, 12, 24, and 36 months after ablation.

Mechanical Circulatory Support to Treat Pulmonary Embolism: Venoarterial Extracorporeal Membrane Oxygenation and Right Ventricular Assist Devices.

Mechanical circulatory support may help patients with massive pulmonary embolism who are not candidates for systemic thrombolysis, pulmonary embolectomy, or catheter-directed therapy, or in whom these established interventions have failed. Little published literature covers this topic, which led us to compare outcomes of patients whose massive pulmonary embolism was managed with the use of venoarterial extracorporeal membrane oxygenation (VA-ECMO) or a right ventricular assist device (RVAD). We searched the medical literature from January 1990 through September 2018 for reports of adults hospitalized for massive or high-risk pulmonary embolism complicated by hemodynamic instability, and who underwent VA-ECMO therapy or RVAD placement.

Formation of intracellular lumina in human prostate carcinoma (DU145) cells, maturation into signet cells, and the cribriform morphology of tumors.

The intracellular or intracytoplasmic lumen (IL) is an enigmatic histological structure that occurs in various tumor cells. A reassessment of diverse ILs fine-structure micrographs obtained out of previous studies encompassing the human prostate carcinoma (DU145) cell line and xenotransplanted carcinomas enabled us to propose aspects of ILs development in cancer cells: a combination of altered expressions in intercellular contacts and their cytoskeletal components would favor a disarray of self-apical polarity orientation; those defects, associated with a local, entwined enriched membranous structures growing as microvilli-like formations out of a disrupted endoplasm and trans-Golgi sorting, create ILs in cells' perikarya. These misplaced intracytoplasmic domains can become enlarged through spaces made between the finger-like structures by accruing membranes of coalescent intracytoplasmic vesicles then adding microvilli and glycocalyx to constitute ILs.