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Air embolism

Rajat N Moman, Caitlin J Kapurch, Francis X Whalen, David W Barbara
No abstract text is available yet for this article.
March 15, 2018: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
Nanda Kishore Sahoo, Kapil Tomar, Ankur Thakral, N Mohan Rangan
Cranioplasty is a time-honoured surgical procedure to restore the calvarial form and function that is associated with a relatively high complication rate. The present article analyzed various complications and reviewed the complications based on study of the relevant research in the craniofacial literature. Complications were broadly divided into 2 groups, intraoperative and postoperative, for ease of understanding. The etiological factors, local and systemic condition of the patient, prevention, and management of various complications were widely discussed...
March 12, 2018: Journal of Craniofacial Surgery
Melita Kukuljan, Zlatko Kolić, Duje Vukas, David Bonifačić, Kristina Vrbanec
Transthoracic computed tomography-guided core needle biopsy (TTNB) is a well-established method for diagnosing focal pulmonary lesions. However, the dangers associated with this method as well as the significant number of complications caused by it cannot be ignored. Systemic air embolism is a rare but potentially fatal complication that can accompany transthoracic needle biopsies of pulmonary lesions. In this study, we report nonfatal systemic air embolism as a complication of a transthoracic needle core biopsy of a subpleural nodule in the right upper pulmonary lobe of a patient with hemoptysis...
February 2018: Eurasian Journal of Medicine
Hannu Jarvinen, Jad Farah, Teemu Siiskonen, Olivera Ciraj-Bjelac, Jérémie Dabin, Eleftheria Carinou, Joanna Domienik-Andrzejewska, Dariusz Kluszczynski, Željka Knežević, Renata Kopec, Marija Majer, Francoise Malchair, Anna Negri, Piotr Pankowski, Sandra Sarmento, Annalisa Trianni
PURPOSE: The feasibility of setting-up generic, hospital-independent dose alert levels to initiate vigilance on possible skin injuries in interventional procedures was studied for three high-dose procedures (chemoembolization (TACE) of the liver, neuro-embolization (NE) and percutaneous coronary intervention (PCI)) in 9 European countries. METHODS: Gafchromic® films and thermoluminescent dosimeters (TLD) were used to determine the Maximum Skin Dose (MSD). Correlation of the online dose indicators (fluoroscopy time, kerma- or dose-area product (KAP or DAP) and cumulative air kerma at interventional reference point (Ka,r )) with MSD was evaluated and used to establish the alert levels corresponding to a MSD of 2 Gy and 5 Gy...
February 2018: Physica Medica: PM
David M Love, John S Sperry
Little is known about the ability of trees to recover hydraulic conductance (k) within a growing season by regrowth or refilling of embolized conduits. Recovery of k lost to drought or other causes would prevent chronic reductions in gas exchange and productivity. To test recovery ability we conducted a 2-year experiment (2014-15) on a cohort of aspen ramets (Populus tremuloides, Michx.). Whole-tree k was measured from mid-June through September from sapflow (Q) and pre-dawn and mid-day xylem pressure. We induced embolism in the treatment group with high air pressure delivered by a split pressure chamber sealed around the main trunk...
March 2, 2018: Tree Physiology
Joham Choque-Velasquez, Roberto Colasanti, Julio C Resendiz-Nieves, Kléber E Gonzáles-Echevarría, Rahul Raj, Behnam Rezai Jahromi, Felix Goehre, Ann-Christine Lindroos, Juha Hernesniemi
OBJECTIVE: Nowadays, the sitting position has lost favor among neurosurgeons partly due to assumptions of increased complications, such as venous air embolisms (VAEs) and hemodynamic disturbances. Moreover, it may oblige the surgeon to a tiring posture. Herein, we describe our protocol for the "praying (steeper sitting) position" for pineal region surgery, a variant which may reduce some of the risks of the sitting position while providing a more ergonomic surgical position...
February 27, 2018: World Neurosurgery
Carolin Edler, Anke Klein, Klaus Püschel, Ann Sophie Schröder
Vascular air embolism is caused by penetration of air into veins or arteries through a surgical wound or other connection between the external and internal aspects of the body. Vascular air embolism has various causes, and iatrogenic air embolisms are the most frequently described. We report a case of fatal air embolism in an 83-year-old woman who was admitted to hospital. At the time of the incident, she was alone in her ward receiving an intravenous infusion of antibiotics via a peripheral line in her right forearm...
March 1, 2018: Forensic Science, Medicine, and Pathology
Tsuneo Nakajima, Toshihiro Sakai, Hitoshi Hara
We report a forty-six-year-old man with a past history of brain abscess managed by surgical drainage and recurrent ischemic strokes. After treatment of brain abscess, he had been on medication for symptomatic epilepsy, but had ceased medication by his judgment. He was taken to a hospital in an ambulance for an epileptic seizure. In the hospital he suffered from drug-induced renal dysfunction caused by the intravenous anti-epileptic drug, and right hemiparesis due to ischemic stroke occurred on the third hospitalization day...
February 28, 2018: Rinshō Shinkeigaku, Clinical Neurology
Ya Zhang, Laurent J Lamarque, José M Torres-Ruiz, Bernhard Schuldt, Zohreh Karimi, Shan Li, De-Wen Qin, Paulo Bittencourt, Régis Burlett, Kun-Fang Cao, Sylvain Delzon, Rafael Oliveira, Luciano Pereira, Steven Jansen
Methods to estimate xylem embolism resistance generally rely on hydraulic measurements, which can be far from straightforward. Recently, a pneumatic method based on air flow measurements of terminal branch ends was proposed to construct vulnerability curves by linking the amount of air extracted from a branch with the degree of embolism. We applied this novel technique for 10 temperate tree species, including six diffuse, two ring-porous and two gymnosperm species, and compared the pneumatic curves with hydraulic ones obtained from either the flow-centrifuge or the hydraulic-bench dehydration method...
February 21, 2018: Tree Physiology
Nicholas J Parkinson, Harold C McKenzie, Michelle H Barton, Jennifer L Davis, Bettina Dunkel, Amy L Johnson, Elizabeth S MacDonald
BACKGROUND: Venous air embolism is a potentially life-threatening complication of IV catheter use in horses. Despite widespread anecdotal reports of their occurrence, few cases have been reported in the literature and the prognosis is currently unknown. HYPOTHESIS/OBJECTIVES: Our objective was to describe the surrounding circumstances, clinical signs, treatment, progression, and outcome of venous air embolism in hospitalized horses. ANIMALS: Thirty-two horses with acute onset of compatible clinical signs associated with IV catheter disconnection or damage...
February 20, 2018: Journal of Veterinary Internal Medicine
Josep M Casadesús, Fernando Aguirre, Ana Carrera, Pere Boadas-Vaello, Maria T Serrando, Francisco Reina
The purpose of this study was to suggest modifications of autopsy techniques in order to improve post-mortem diagnosis of arterial gas embolism (AGE) based on multidisciplinary investigation of SCUBA diving fatalities. Five adult human cadavers from the voluntary donation program of the Human Anatomy Laboratory, and eight judicial autopsied bodies of SCUBA divers from the Forensic Pathology Service were assessed. Before performing any autopsies, we accessed the diving plan and the divers' profiles for each case...
February 19, 2018: Forensic Science, Medicine, and Pathology
Zeping Xu, Lingyan Jin, Byron Smith, Yiping Bai, Haoxiang Luo, Lars Axel Strombergsson, Min Fei, Yandong Jiang
Efficient air removal from a vascular access line is a key step to prevent air embolism. Existing devices, especially for rapid infusers, are far from optimum. In this study, we developed a novel device, vascular access line air removal device (VALARD), and compared its efficiency of air removal and pause time of forward bulk flow with a commonly used device, the Belmont pump. Part I experiment, saline was infused at a forward bulk flow rate of 250, 500, and 750 mL/min. Meanwhile, air was introduced into the infusion line at a rate of 5, 10, and 15 mL/min for each bulk flow rate...
February 17, 2018: Journal of Clinical Monitoring and Computing
Faiza Khalid, Sofiya Rehman, Rania AbdulRahman, Shikha Gupta
A 76--year--old male cigarette smoker presented with a 2-week history of cough and haemoptysis. Chest CT on admission revealed multiple new lung nodules concerning for malignancy. CT--guided biopsy of the nodule in left lower lobe was attempted in prone oblique position for tissue diagnosis. Local anaesthetic (lidocaine) was administered using a 25--gauge (1.5-inch) needle to anaesthetise the skin and subcutaneous tissue. This was followed by insertion of a 25-gauge (3.5-inch) Whitacre needle to anaesthetise deeper tissues and parietal pleura...
February 5, 2018: BMJ Case Reports
Aniket N Tavare, Anant Patel, Ashish Saini, Dean D Creer, Samanjit S Hare
No abstract text is available yet for this article.
February 2, 2018: British Journal of Hospital Medicine
Pengxian Yin, Jing Cai
Since 1988, researchers have exposed stems to positive pressures to displace water in vessels and measure the impact of applied pressure on hydraulic conductivity. The pressure-sleeve technique has been used in more than 60 publications to measure vulnerability curves (VCs), which are a measure of how water stress impacts the ability of plants to transport water because water stress induces embolism in vessels which blocks water flow. It is thought that the positive pressure in a sleeve required to induce 50% loss of conductivity (PLC), P50 , is the same magnitude as the tension that causes 50% PLC, T50 , where the tension can be induced by either bench-top dehydration or by a centrifuge technique...
February 9, 2018: Plant, Cell & Environment
Aleksandra Borowska-Solonynko, Agnieszka Dąbkowska
Evaluation of two suicidal helium inhalation cases is presented, comprising both conventional autopsy methods and postmortem computed tomography. Conventional postmortem examinations reveal no characteristic changes. Modern diagnostic techniques enabled to disclosethe presence of a very large amount of accumulated gas in all examined areas, including veins and arteries of the head, torso, lower extremities, heart chambers, and between muscle fibers in both cases. The changes due to possible putrefaction were taken into consideration - radiological alteration index was calculated...
January 10, 2018: Legal Medicine
Borhan Alhosseini Hamedani, Alexa Melvin, Kirubahara Vaheesan, Sameer Gadani, Keith Pereira, Andrew F Hall
PURPOSE: The goal of this work was to develop phantoms for the optimization of pre-operative computed tomography (CT) scans of the prostate artery, which are used for embolization planning. METHODS: Acrylonitrile butadiene styrene (ABS) pellets were doped with barium sulfate and extruded into filaments suitable for 3D printing on a fused deposition modeling (FDM) printer. Cylinder phantoms were created to evaluate radiopacity as a function of doping percentage. Small-diameter tree phantoms were created to assess their composition and dimensional accuracy...
February 7, 2018: Journal of Applied Clinical Medical Physics
Xuesong Yao, Dong Yan, Xianxian Jiang, Xiao Li, Huiying Zeng, Dezhong Liu, Huai Li
RATIONALE AND OBJECTIVES: The objective of this study was to investigate the impact of a dual-phase cone-beam computed tomography (DP-CBCT)-based navigation imaging during transarterial chemoembolization (TACE) of hepatocellular carcinoma (HCC) in a perspective randomized study. MATERIALS AND METHODS: Forty-two patients with HCC (39 men, 57 ± 9 years, 13 first-time TACE) underwent TACE using three-dimensional image guidance with automatic detection of tumor-feeding vessels computed from DP-CBCT (early and delayed arterial phases)...
February 1, 2018: Academic Radiology
J Greffier, J Goupil, A Larbi, X Stefanovic, F Pereira, G Moliner, S Ovtchinnikoff, J P Beregi, J Frandon
PURPOSE: To assess the value of the routine use of radiochromic films in abdominopelvic embolization procedures to improve patient follow-up. METHODS: A total of 55 patients who underwent transcatheter abdominopelvic embolization were prospectively included. Six types of procedures were evaluated including hepatic chemoembolization (HCE), gonadal veins embolization (GVE), uterine elective embolization (UEE), uterine urgent embolization (UUE), abdominal elective embolization (AEE), and abdominal urgent embolization (AUE)...
January 29, 2018: Diagnostic and Interventional Imaging
Gildardo Cortés-Julián, Luis C Valencia, Silviano Ríos-Pascual, Marco A de la Rosa-Abarroa, Enrique Guzmán-de Alba
Background Infectious lung cavities are a common entity for the respiratory physician. Sometimes these lesions require surgical treatment, but surgery is challenging, and complications are common. Methods Patients with infectious lung cavities amenable to surgical treatment were included in a case-control study. The control group included patients with no complications. The cases group comprised patients with any of the following complications up to 90 days after surgery: death, persistence of hemoptysis, empyema, operative blood loss > 500 mL, vascular lesion requiring repair, massive transfusion (>5 units of packed red blood cells per 48 h) or reoperation for bleeding, postoperative mechanical ventilation, intensive care unit stay > 48 h, prolonged air leak, and persistent atelectasis...
January 1, 2018: Asian Cardiovascular & Thoracic Annals
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