keyword
MENU ▼
Read by QxMD icon Read
search

hair implant

keyword
https://www.readbyqxmd.com/read/27909498/shock-lead-dislodgement-related-to-its-small-hair-pin-curve-in-a-pocket-a-case-of-ratchet-syndrome
#1
Yuka Taguchi, Kohei Matsushita, Toshiyuki Ishikawa, Yutaka Ogino, Hirooki Matsushita, Junya Hosoda, Katsumi Matsumoto, Satoshi Umemura
There have been few reports about ratchet syndrome. We report a case of ratchet syndrome caused by small hair-pin curve of lead that triggered the lead retract itself. A 69-year-old man with a past history of inferior wall myocardial infarction, presented with progressive congestive heart failure. He underwent implantation of cardiac resynchronization therapy with an implantable cardiac defibrillator (CRTD) at our hospital. At 33 days after implantation, shock lead dislodgement was revealed. X-ray showed that the lead tip was in left subclavian vein, leaving its screw out, and a large part of the proximal portion of the lead was retracted into the pocket, while the other two leads remained in appropriate positions and the device had not rotated...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27889116/total-phallic-reconstruction-using-radial-forearm-free-flap-after-iatrogenic-penile-amputation
#2
J C Angulo, I Arance, C Gómez-Llorens, C Esquinas, C Gómez-Martín, J L Fernández-Cañamaque
INTRODUCTION: The iatrogenic loss of the penis is a rare situation. We present a challenging case of deferred total penile reconstruction in a genetic male. MATERIAL AND METHODS: A 57-year-old man with the loss of the penis due to a penile abscess and necrosis secondary to penile curvature surgery. The reconstruction was performed over several operations using a radial forearm free flap (RFFF) and placement of a customised inflatable prosthesis a year later. RESULTS: During the first operation, the penile abscess was drained, the necrotic residues were debrided and placement of hypogastric drainage...
November 23, 2016: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/27881310/implant-retained-skull-prosthesis-to-cover-a-large-defect-of-the-hairy-skull-resulting-from-treatment-of-a-basal-cell-carcinoma-a-clinical-report
#3
Jitske Hoekstra, Arjan Vissink, Gerry M Raghoebar, Anita Visser
Skin carcinoma, particularly basal cell carcinoma, and its treatment can result in large defects of the hairy skull. A 53-year-old man is described who was surgically treated for a large basal cell carcinoma invading the skin and underlying tissue at the top of the hairy skull. Treatment consisted of resecting the tumor and external part of the skull bone. To protect the brain and to cover the defect of the hairy skull, an acrylic resin skull prosthesis with hair was designed to mask the defect. The skull prosthesis was retained on 8 extraoral implants placed at the margins of the defect in the skull bone...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27864610/the-monorail-technique-to-overcome-difficult-anatomical-course-during-implantation-of-central-venous-port-via-the-left-internal-jugular-vein
#4
Eu Hyun Kim, Jung Suk Oh, Ho Jong Chun, Hae Giu Lee, Byung Gil Choi
PURPOSE: The study aimed to introduce a monorail technique to overcome difficult anatomical course via left internal jugular vein in implantable port insertion. METHODS: From 2007 to 2016, a total of 9346 patients were referred for implantable port insertion in our interventional unit, among which 79 cases were requested to insert on the left side. Our monorail technique was applied only when the technical challenge of the catheter tip entering the azygos vein instead of the superior vena cava occurred (n = 7)...
November 18, 2016: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/27805613/spiral-ganglion-neuron-explant-culture-and-electrophysiology-on-multi-electrode-arrays
#5
Stefan Hahnewald, Marta Roccio, Anne Tscherter, Jürg Streit, Ranjeeta Ambett, Pascal Senn
Spiral ganglion neurons (SGNs) participate in the physiological process of hearing by relaying signals from sensory hair cells to the cochlear nucleus in the brain stem. Loss of hair cells is a major cause of sensory hearing loss. Prosthetic devices such as cochlear implants function by bypassing lost hair cells and directly stimulating SGNs electrically, allowing for restoration of hearing in deaf patients. The performance of these devices depends on the functionality of SGNs, the implantation procedure and on the distance between the electrodes and the auditory neurons...
October 19, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27783138/cochlear-implantation-in-patients-with-definite-meniere-s-disease
#6
Nils Kristian Prenzler, Eva Bültmann, Alexandros Giourgas, Melanie Steffens, Rolf Benedikt Salcher, Stefan Stolle, Anke Lesinski-Schiedat, Thomas Lenarz, Martin Durisin
The exact pathomechanism of deafening in Meniere's disease (MD) is still unknown; intoxication of hair cells and neural damage from endolymphatic hydrops is discussed. In the literature, there are only a few reports on hearing outcome of MD patients after treatment with cochlear implantation (CI) whereby especially the comparison of MD vs. non-MD patients with CI differs. In this retrospective study, results in speech understanding [Freiburger Einsilber (FES65) and Hochmair-Schulz-Moser test in quiet (HSM) and in noise (HSM + 10 dB)] of 27 implanted MD patients were collected and compared to a matched standard CI cohort...
October 25, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27753703/intracochlear-pressure-transients-during-cochlear-implant-electrode-insertion
#7
Nathaniel T Greene, Jameson K Mattingly, Renee M Banakis Hartl, Daniel J Tollin, Stephen P Cass
HYPOTHESIS: Cochlear implant (CI) electrode insertion into the round window induces pressure transients in the cochlear fluid comparable to high-intensity sound transients. BACKGROUND: Many patients receiving a CI have some remaining functional hearing at low frequencies; thus, devices and surgical techniques have been developed to use this residual hearing. To maintain functional acoustic hearing, it is important to retain function of any hair cells and auditory nerve fibers innervating the basilar membrane; however, in a subset of patients, residual low-frequency hearing is lost after CI insertion...
December 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27749750/the-compound-action-potential-in-subjects-receiving-a-cochlear-implant
#8
William C Scott, Christopher K Giardina, Andrew K Pappa, Tatyana E Fontenot, Meredith L Anderson, Margaret T Dillon, Kevin D Brown, Harold C Pillsbury, Oliver F Adunka, Craig A Buchman, Douglas C Fitzpatrick
HYPOTHESIS: The compound action potential (CAP) is a purely neural component of the cochlea's response to sound, and may provide information regarding the existing neural substrate in cochlear implant (CI) subjects that can help account for variance in speech perception outcomes. BACKGROUND: Measurement of the "total response" (TR), or sum of the magnitudes of spectral components in the ongoing responses to tone bursts across frequencies, has been shown to account for 40 to 50% of variance in speech perception outcomes...
December 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27697486/enhancing-speech-envelope-by-integrating-hair-cell-adaptation-into-cochlear-implant-processing
#9
Mahan Azadpour, Robert L Smith
Cochlear implants (CIs) bypass some of the mechanisms that underlie normal neural behavior as occurs in acoustic hearing. One such neural mechanism is short-term adaptation, which has been proposed to have a significant role in speech perception. Acoustically-evoked neural adaptation has been mainly attributed to the depletion of neurotransmitter in the hair-cell to auditory-nerve synapse and is therefore not fully present in CI stimulation. This study evaluated a signal processing method that integrated a physiological model of hair-cell adaptation into CI speech processing...
September 30, 2016: Hearing Research
https://www.readbyqxmd.com/read/27611787/titanium-and-zirconium-levels-are-associated-with-changes-in-micrornas-expression-results-from-a-human-cross-sectional-study-on-obese-population
#10
Gianguido Cossellu, Valeria Motta, Laura Dioni, Laura Angelici, Luisella Vigna, Giampietro Farronato, Angela Cecilia Pesatori, Valentina Bollati
OBJECTIVES: In this study on 90 individuals we aimed at evaluating the microRNAs (miRNAs) expression profile associated with personal levels of Titanium (Ti) and Zirconium (Zr) traced in hair samples. Ti and Zr materials are broadly used for dental implants but the biological reactions triggered by a long term presence of these materials in the oral cavity still need to be assessed. MiRNAs are mechanisms that need to be investigated as they play a fundamental role in the control of gene expression following external stimuli and contribute to a wide range of pathophysiological processes...
2016: PloS One
https://www.readbyqxmd.com/read/27573993/phenomenological-modelling-of-electrically-stimulated-auditory-nerve-fibers-a-review
#11
Marko Takanen, Ian C Bruce, Bernhard U Seeber
Auditory nerve fibers (ANFs) play a crucial role in hearing by encoding and transporting the synaptic input from inner hair cells into afferent spiking information for higher stages of the auditory system. If the inner hair cells are degenerated, cochlear implants may restore hearing by directly stimulating the ANFs. The response of an ANF is affected by several characteristics of the electrical stimulus and of the ANF, and neurophysiological measurements are needed to know how the ANF responds to a particular stimulus...
2016: Network: Computation in Neural Systems
https://www.readbyqxmd.com/read/27525617/the-effect-of-round-window-sealants-on-delayed-hearing-loss-in-a-guinea-pig-model-of-cochlear-implantation
#12
David Rowe, Scott Chambers, Amy Hampson, Hayden Eastwood, Stephen O'Leary
AIM: To determine whether the type of material used to seal the cochlea after round window cochlear implantation influences delayed hearing loss. BACKGROUND: Cochlear implants are now prescribed to patients with residual, low-frequency hearing. This hearing-which provides perceptual benefits for the implanted ear-is frequently lost for unknown reasons weeks to months after surgery in a proportion of patients. A post-surgical change in cochlear mechanics, related to the material used to seal the cochlea after round window implantation, may contribute to this loss...
September 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27519654/effects-of-sustained-release-dexamethasone-hydrogels-in-hearing-preservation-cochlear-implantation
#13
Clemens Honeder, Chengjing Zhu, Hanna Schöpper, Julia Clara Gausterer, Manuel Walter, Lukas David Landegger, Nodir Saidov, Dominik Riss, Roberto Plasenzotti, Franz Gabor, Christoph Arnoldner
It has been shown that glucocorticoids reduce the hearing threshold shifts associated with cochlear implantation. Previous studies evaluated the administration of glucocorticoids immediately before surgery or the repeated pre- or perioperative systemic application of glucocorticoids. The aim of this study was to evaluate the effects of a sustained release dexamethasone hydrogel in hearing preservation cochlear implantation. To address this issue, a guinea pig model of cochlear implantation was used. 30 normal hearing pigmented guinea pigs were randomized into a group receiving a single dose of a dexamethasone/poloxamer407 hydrogel one day prior to surgery, a second group receiving the hydrogel seven days prior to surgery and a control group...
August 9, 2016: Hearing Research
https://www.readbyqxmd.com/read/27495906/percutaneous-irreversible-electroporation-for-breast-tissue-and-breast-cancer-safety-feasibility-skin-effects-and-radiologic-pathologic-correlation-in-an-animal-study
#14
Sheng Li, Fei Chen, Lujun Shen, Qi Zeng, Peihong Wu
BACKGROUND: To study the safety, feasibility and skin effects of irreversible electroporation (IRE) for breast tissue and breast cancer in animal models. METHODS: Eight pigs were used in this study. IRE was performed on the left breasts of the pigs with different skin-electrode distances, and the right breasts were used as controls. The electrodes were placed 1-8 mm away from the skin, with an electrode spacing of 1.5-2 cm. Imaging and pathological examinations were performed at specific time points for follow-up evaluation...
2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27472515/tarantula-hair-associated-panuveitis-treated-with-sustained-release-intravitreal-dexamethasone-implant
#15
Melina I Morkin, Lana M Rifkin, Sabin Dang, Caroline R Baumal
PURPOSE: To report a case of tarantula hair-induced panuveitis treated with sustained-release intravitreal dexamethasone implant and followed by sequential spectral domain optical coherence tomography imaging. METHODS: Findings on clinical examination, anterior segment optical coherence tomography, corneal in vivo confocal microscopy, color fundus photos, fluorescein angiography, and retinal spectral domain optical coherence tomography are presented. Sequential optical coherence tomography images demonstrated the course of the chorioretinal lesions before and after sustained-release intravitreal dexamethasone implant...
July 28, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/27458264/hair-follicle-and-sebaceous-gland-de-novo-regeneration-with-cultured-epidermal-stem-cells-and-skin-derived-precursors
#16
Xiaoxiao Wang, Xusheng Wang, Jianjun Liu, Ting Cai, Ling Guo, Shujuan Wang, Jinmei Wang, Yanpei Cao, Jianfeng Ge, Yuyang Jiang, Edward E Tredget, Mengjun Cao, Yaojiong Wu
: : Stem cell-based organ regeneration is purported to enable the replacement of impaired organs in the foreseeable future. Here, we demonstrated that a combination of cultured epidermal stem cells (Epi-SCs) derived from the epidermis and skin-derived precursors (SKPs) was capable of reconstituting functional hair follicles and sebaceous glands (SG). When Epi-SCs and SKPs were mixed in a hydrogel and implanted into an excisional wound in nude mice, the Epi-SCs formed de novo epidermis along with hair follicles, and SKPs contributed to dermal papilla in the neogenic hair follicles...
July 25, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27431243/peripheral-nerve-and-spinal-cord-regeneration-in-mice-using-hair-follicle-associated-pluripotent-hap-stem-cells
#17
Yasuyuki Amoh, Kensei Katsuoka, Robert M Hoffman
Nestin, a neural stem cell marker protein, is expressed in hair follicle cells above the bulge area. These nestin-positive hair follicle-associated-pluripotent (HAP) stem cells are negative for the keratinocyte marker K15 and can differentiate into neurons, glia, keratinocytes, smooth muscle cells, cardiac muscle cells, and melanocytes in vitro. HAP stem cells are positive for the stem cell marker CD34, as well as K15-negative, suggesting their relatively undifferentiated state. HAP stem cells promoted the functional recovery of injured peripheral nerves and the spinal cord...
2016: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27381403/blunt-force-trauma-in-veterinary-forensic-pathology
#18
L Ressel, U Hetzel, E Ricci
Veterinary pathologists commonly encounter lesions of blunt trauma. The development of lesions is affected by the object's mass, velocity, size, shape, and angle of impact and by the plasticity and mobility of the impacted organ. Scrape, impact, and pattern abrasions cause localized epidermal loss and sometimes broken hairs and implanted foreign material. Contusions are best identified after reflecting the skin, and must be differentiated from coagulopathies and livor mortis. Lacerations-traumatic tissue tears-may have irregular margins, bridging by more resilient tissue, deviation of the wound tail, crushed hairs, and unilateral abrasion...
September 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27380578/alloderm-covering-over-titanium-cranioplasty-may-minimize-contour-deformities-in-the-frontal-bone-position
#19
Mansher Singh, Joseph A Ricci, Ian F Dunn, Edward J Caterson
BACKGROUND: Titanium cranioplasty is commonly used for surgical closure of skull defects post craniectomy. Superficial implantation of the mesh can result in discomfort, palpability, and in extreme patients, exposure of the mesh. Exposed titanium mesh can be complicated by infections and often requires implant revision or removal. Generally, the contour of the titanium mesh is camouflaged in the hairline of the patient and any aesthetic complication can remain inconspicuous. However, in the frontal bone position the thin hairless forehead skin often may not easily hide the contour of the underlying titanium mesh...
July 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27373131/biofibre-hair-implant-what-is-new-what-is-true
#20
G Tchernev, M Sheta, M Rahoui, A A Chokoeva, U Wollina, G K Maximov, J W Patterson, M Fioranelli, M G Roccia, J Ananiev, T Lotti
Ensuring the safety of hair implant fibers is essential. At the same time, good aesthetic quality and durability should also be considered in order to maintain expected result over the years. The main features required are biocompatibility, resistance to traction, absence of capillarity, resistance to physical-chemical stress, and low tissue trauma, in addition to good aesthetics. Biofibre® medical hair prosthetic fibers meet all the biocompatibility and safety requirements established by international standards for medical devices...
April 2016: Journal of Biological Regulators and Homeostatic Agents
keyword
keyword
109043
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"