Read by QxMD icon Read

Preoperative planning

Hager Aref, Georges A Abizeid
INTRODUCTION: Schwannoma is a benign encapsulated tumor of the peripheral nervous system which is mainly located in the head and neck. However, axillary Schwannoma is rare. In this article, the author presents an interesting case of a right axillary Schwannoma, where the diagnosis was preoperatively made on a Tru-cut biopsy. CASE PRESENTATION: We report a case of an enlarged right axillary swelling in a sixty-year-old male. Proper radiologic workup was performed...
September 29, 2018: International Journal of Surgery Case Reports
Ailin Qu, Yongmei Yang, Xin Zhang, Wenfei Wang, Yingjie Liu, Guixi Zheng, Lutao Du, Chuanxin Wang
BACKGROUND: Preoperative prediction of lymph node (LN) status is of crucial importance for appropriate treatment planning in patients with colorectal cancer (CRC). In this study, we sought to develop and validate a non-invasive nomogram model to preoperatively predict LN metastasis in CRC. METHODS: Development of the nomogram entailed three subsequent stages with specific patient sets. In the discovery set (n = 20), LN-status-related miRNAs were screened from high-throughput sequencing data of human CRC serum samples...
October 9, 2018: EBioMedicine
Michael Salna, Yasuhiro Shudo, Jeffrey J Teuteberg, Dipanjan Banerjee, Richard V Ha, Y Joseph Woo, William Hiesinger
INTRODUCTION: The planned use of a temporary right ventricular assist device (RVAD) at the time of left ventricular assist device (LVAD) implantation may prevent the need for a permanent biventricular assist device (BiVAD). Herein we describe our RVAD weaning protocol that was effectively employed in 4 patients to prevent the need for permanent BiVAD. METHODS: Four patients in refractory cardiogenic shock underwent planned RVAD insertion during LVAD implantation due to severely depressed right ventricular function with dilation preoperatively...
October 1, 2018: Heart Surgery Forum
Ahmed Elbasty, Nadeem Mughal, Michael Delbridge
Purpose: Achieving an effective seal with the Nellix endovascular aneurysm system is dependent on filling the stent bags with an appropriate volume of polymer. Calculating this volume preoperatively is essential and can be performed manually or using three-dimensional (3D) software. The aim of this project was to compare the accuracy of these two methods relative to the actual polymer volume used. Materials and Methods: Consecutive patients undergoing Nellix aneurysm repair were included in this retrospective study...
September 2018: Vascular Specialist International
Takahiro Nakajima, Ichiro Yoshino
Recent advance in bronchology and interventional pulmonology contributes to improve the quality of patient care in thoracic surgery. Narrow band imaging (NBI) combined with high definition bronchoscopy clearly visualize the aberrant tumor vessels on the mucosa of endobronchial malignancy. It helps the preoperative surgical planning for the clear bronchial margin during the surgery. The index of hemoglobin (IHb) show the approximate amount of hemoglobin within the mucosal surface and we use the IHb for the evaluation of local circulation of bronchial anastomosis after bronchoplasty...
September 2018: Kyobu Geka. the Japanese Journal of Thoracic Surgery
Hyung Seok Lee, Young Rim Song, Jwa Kyung Kim, Sun Ryoung Choi, Narae Joo, Hyung Jik Kim, Pyoungju Park, Sung Gyun Kim
INTRODUCTION: The number of elderly patients requiring hemodialysis has increased, along with the need for multiple vascular access placements. Thus, the frequency of access creation using the upper arm veins, including transposed basilic arteriovenous fistula, has also increased. The purpose of this study was to identify the prevalence of anatomical variations in the upper arm veins on preoperative mapping venography and to investigate the implications of such variants on access creation...
October 11, 2018: Journal of Vascular Access
Sally Nguyen, Sylvie Nadeau
Background Osteomas are rare benign and slow-growing osteogenic tumors mainly involving frontal and ethmoid sinuses. Objectives The primary objective of our study is to present the management of cases of giant frontal sinus osteomas. Secondarily, we describe our modified unilateral osteoplastic flap approach without obliteration to remove these osteomas. Methods Retrospective chart review at a tertiary academic center ("Hôpital de l'Enfant-Jésus") from July 2006 to October 2016. Demographics characteristics, tumor characteristics, presenting symptoms, frontal sinus surgery technique (osteoplastic flap, endoscopic surgery, or a combination of both), and outcomes of giant frontal sinus osteomas (≥30 mm) were recorded...
October 11, 2018: American Journal of Rhinology & Allergy
Kwok-Chuen Wong, Xiaohui Niu, Hairong Xu, Yuan Li, Shekhar Kumta
In orthopaedic bone tumour surgery, surgeons perform malignant bone tumour resections with tumour-free margin. The bone defects following the resections have to be reconstructed to restore limb function. An inaccurate resection with positive surgical margin increased the risk of local recurrence and compromised patients' survival. Conventionally, orthopaedic tumour surgeons analyse two-dimensional (2D) imaging information and mentally integrate to formulate a three-dimensional (3D) surgical plan. It is difficult to translate the surgical plan to the operating room in complex cases...
2018: Advances in Experimental Medicine and Biology
Li Liu, Klaus Siebenrock, Lutz-P Nolte, Guoyan Zheng
Modern computerized planning tools for periacetabular osteotomy (PAO) use either morphology-based or biomechanics-based methods. The latter rely on estimation of peak contact pressures and contact areas using either patient-specific or constant thickness cartilage models. We performed a finite element analysis investigating the optimal reorientation of the acetabulum in PAO surgery based on simulated joint contact pressures and contact areas using patient-specific cartilage model. Furthermore we investigated the influences of using patient-specific cartilage model or constant thickness cartilage model on the biomechanical simulation results...
2018: Advances in Experimental Medicine and Biology
Li Liu, Klaus Siebenrock, Lutz-P Nolte, Guoyan Zheng
Periacetabular osteotomy (PAO) is an effective approach for surgical treatment of hip dysplasia in young adults. However, achieving an optimal acetabular reorientation during PAO is the most critical and challenging step. Routinely, the correct positioning of the acetabular fragment largely depends on the surgeon's experience and is done under fluoroscopy to provide the surgeon with continuous live x-ray guidance. Our developed system starts with a fully automatic detection of the acetabular rim, which allows for quantifying the acetabular 3D morphology with parameters such as acetabular orientation, femoral head extrusion index (EI), lateral center-edge (LCE) angle, and total and regional femoral head coverage (FHC) ratio for computer-assisted diagnosis, planning, and simulation of PAO...
2018: Advances in Experimental Medicine and Biology
Guoyan Zheng, Alper Alcoltekin, Benedikt Thelen, Lutz-P Nolte
This chapter introduces a solution called "3X-knee" that can robustly derive 3D models of the lower extremity from 2D long leg standing X-ray radiographs for preoperative planning and postoperative treatment evaluation of total knee arthroplasty (TKA). There are three core components in 3X-knee technology: (1) a knee joint immobilization apparatus, (2) an X-ray image calibration phantom, and (3) a statistical shape model-based 2D-3D reconstruction algorithm. These three components are integrated in a systematic way in 3X-knee to derive 3D models of the complete lower extremity from 2D long leg standing X-ray radiographs acquired in weight-bearing position...
2018: Advances in Experimental Medicine and Biology
Matthew J Zdilla, Kelsey R Mangus, Jordan V Swearingen, Kyle D Miller, H Wayne Lambert
PURPOSE: Submental anatomical variation is of clinical importance with regard to head and neck surgeries. One such anatomical variation is that of additional musculature joining the intermediate tendon of the digastric muscle to the midline of the mylohyoid musculature-a variation which this report refers to, accordingly, as an arrowhead variation. Though the arrowhead variation has been described in several case reports, it has not been subject to cross-sectional study. The purpose of this study is to determine the prevalence of the arrowhead variation...
October 10, 2018: Surgical and Radiologic Anatomy: SRA
Jun Yang, Kun Li, Huiyuan Deng, Jun Feng, Yong Fei, Yiren Jin, Chengde Liao, Qinqing Li
Pelvic tumors can be both complicated and challenging, and computed tomography (CT) has played an important role in the diagnosis and treatment planning of these conditions. Cinematic rendering (CR) is a new method of 3D imaging using CT volumetric data. Unlike traditional 3D methods, CR uses the global illumination model to produce high-definition surface details and shadow effects to generate photorealistic images. In this pictorial review, a series of primary pelvic tumor cases are presented to demonstrate the potential value of CR relative to conventional volume rendering (VR)...
September 2018: Quantitative Imaging in Medicine and Surgery
Lucyna Tomaszek, Grazyna Cepuch, Dariusz Fenikowski
AIMS/BACKGROUND: The proportion of patients who experience anxiety prior to planned surgery, even a minimally invasive one, is estimated at 50-70%. Thoracic surgery, causes significant preoperative anxiety, especially in children. The aim of this study was to determine the effect of an important component of psychological preparation for a surgery as information support on levels of anxiety, pain and satisfaction with postoperative analgesia. METHODS: The randomized double blind study including patients aged 9-18 years qualified for lateral thoracotomy or Ravitch procedure...
October 5, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
Hanna Markstad, Zoltan Bakos, Ellen Ostenfeld, Mats Geijer, Marcus Carlsson, Rasmus Borgquist
Background Successful cardiac resynchronization therapy (CRT) requires appropriate left ventricular (LV) lead placement on a suitable segment of the free LV wall. Current guidelines suggest targeted lead placement, but the individual anatomy of the cardiac veins is often a limiting factor. Purpose To map cardiac veins with multidetector computed tomography (MDCT) and plot the veins in cardiac segments to facilitate successful CRT implantation. Material and Methods Ninety-nine patients were included (mean age = 68 ± 9 years; 26% women; 46% ischemic cardiomyopathy)...
October 10, 2018: Acta Radiologica
Bassem Abou Hussein, Ali Khammas, Mariam Shokr, Maiyasa Majid, Mariam Sandal, Sameer Al Awadhi, Alya Al Mazrouei, Faisal Badri
Introduction  The routine use of preoperative endoscopy for patients undergoing bariatric surgery is controversial. Although many surgeons find it unnecessary, others still consider it a mandatory tool in preoperative assessment. Patients and methods  We reviewed the medical records of all patients who had undergone preoperative endoscopy before bariatric surgery in Rashid Hospital between January 2013 and June 2016. The patients were divided into three groups: Group 0 included patients with normal endoscopy; Group 1 included patients with abnormalities that did not affect the timing or type of procedure; Group 2 included patients with abnormalities that had a direct impact on the procedure...
October 2018: Endoscopy International Open
Mario Hevesi, David E Hartigan, Isabella T Wu, Cody C Wyles, Vishal S Desai, Andre J van Wijnen, Daniel B F Saris, Bruce A Levy, Aaron J Krych
Background: The preoperative assessment of cartilage lesions is critical to surgical planning and decision making. The accurate radiographic determination of acetabular cartilage damage has remained elusive for modern imaging modalities, including magnetic resonance imaging (MRI) and magnetic resonance arthrography (MRA). While risk factors have been individually described, no multivariable system exists for predicting high-grade cartilage damage. Purpose: To determine the preoperative predictors of grade 3 to 4 acetabular labrum articular disruption (ALAD) lesions...
October 2018: Orthopaedic Journal of Sports Medicine
Andrea Marchesi, Stefano Marcelli, Nicola Zingaretti, Pier Camillo Parodi, Luca Vaienti
BACKGROUND: Wide axillary reconstruction after hidradenitis suppurativa (HS) excision still represents a great challenge. Thoracodorsal artery perforator flap is one of the most reliable local reconstructive techniques. Although its anatomy and harvesting technique have been well described, specific reconstructive criteria still lack. The aim of this study was to help surgeons in planning axillary reconstruction on flaps based on the thoracodorsal artery. METHODS: Twelve patients affected by HS at Hurley stage III underwent wide "en block" excision and immediate reconstruction with 15 local thoracodorsal artery perforator flaps and 2 muscle-sparing latissimus dorsi flaps...
October 9, 2018: Annals of Plastic Surgery
Ayhan Şahin, Onur Baran
Reports on pacemaker placement/relocation surgery under pectoralis nerve block are limited. We herein report a case involving a 74-year-old woman with an infected cardiac pacemaker generator who underwent pacemaker relocation surgery under an ultrasound-guided pectoralis nerve block. On preoperative evaluation, she had congestive heart failure, type 2 diabetes mellitus, and a pacer-dependent heart rhythm. She was considered to be at high risk for general anesthesia. Thus, an ultrasound-guided pectoralis nerve block was planned...
October 5, 2018: A&A practice
Davide Zattoni, Isacco Montroni, Nicole Marie Saur, Anna Garutti, Maria Letizia Bacchi Reggiani, Caterina Galetti, Pietro Calogero, Valeria Tonini
OBJECTIVES: To determine whether the Flemish version of the Triage Risk Screening Tool (fTRST) can be used to accurately assess frailty in an emergency setting. DESIGN: Prospective observational study. SETTING: of a tertiary referral hospital. PATIENTS: All individuals aged 70 and older consecutively admitted to the emergency surgery unit with an urgent need for abdominal surgery between December 2015 and May 2016 who met inclusion criteria (N=110)...
October 9, 2018: Journal of the American Geriatrics Society
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"