1.Differential leukocyte count: manual or automated, what should it be?.
Bong H HYUN ; Gene L GULATI ; John K ASHTON
Yonsei Medical Journal 1991;32(4):283-291
Today's automated hematology analyzers capable of performing a full CBC and a differential leukocyte count (DLC) on whole blood, particularly in a closed tube system, using cytochemistry or impedance-based flow cytometry technology coupled with laser light scattering, conductivity and/or differential cell lysis, are here to stay. Their need and popularity among at least the large, cost and quality-conscious clinical laboratories have been growing for the past few years and will continue to do so in the years ahead. The efficiency and reliability of several of these analyzers in performing complete CBCD (CBC and DLC) and in flagging significant abnormalities have been tested and found acceptable with the need to review a stained blood smear or perform a manual DLC to confirm or obtain additional information on selected cases.
Automation
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Human
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Leukocyte Count/*methods
2.Pancreas-Intestinal Transplantation in Familial Adenomatous Polyposis Patients.
Young Moon JANG ; John J FUN ; K ABU-ELMAG ; Thomas E STARZL
Journal of the Korean Surgical Society 2000;58(6):867-871
Familial adenomatous poliposis is autosomal, predominantly inherited, premalignant disease, which is caused by a mutation in adenomatous poliposis coli gene in chromosome 5q21. Intestinal transplantation is an evolving procedure and has become a lifesaving procedure for pediatrics and adults with intestinal failure who cannot be managed by conventional therapies. Long-term outcome and cost effectiveness continue to improve and will be comparable to those of total parenteral nutrition. The short gut syndrome is the most common indication. Pancreas transplantation, as a solid organ, vascularized graft, has im proved the quality of life for diabetic patients by establishing an insulin-independent, constant normo glycemic state and is a well-established treatment for patients with insulin-dependent diabetes. The bene ficial effect is the maintenance of normoglycemia and possibly the reversal of diabetic complications, such as vasculopathy, neuropathy, and nephropathy. We report a case of pancreas-intestinal transplantation in a familial adenomatous polyposis patient along with a review of the literature.
Adenomatous Polyposis Coli*
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Adult
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Cost-Benefit Analysis
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Diabetes Complications
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Humans
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Pancreas Transplantation
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Parenteral Nutrition, Total
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Pediatrics
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Quality of Life
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Transplants
3.Functional outcomes in children with reduction glossectomy for vascular malformations – “less is more!”
John K. THOMAS ; Vivek Samuel GAIKWAD ; Telugu Ramesh BABU ; John MATHAI ; Rohit SRINIVAS ; Immanuel Sampath KARL
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2021;47(3):209-215
Objectives:
Vascular malformation (VM) of the tongue can cause true macroglossia in children. Reduction glossectomy provides primary relief when sclerotherapy has failed or is not possible. In this study, we evaluated the surgical role in functional outcome of reduction glossectomy performed for VM of the tongue.
Patients and Methods:
We evaluated the functional and surgical outcomes of seven children who were treated at a tertiary care centre in Southern India between 2013 and 2018.
Results:
Six children underwent median glossectomy, while one child underwent lateral glossectomy. Functional assessment was performed at least 2 years after the date of surgery. At the time of assessment, speech was comprehensible for three children and was occasionally unintelligible in four children. Taste and swallowing were normal in all seven children. Six children exhibited a minimal residual lesion after surgery, of which only one was symptomatic. Residual lesions were managed with sclerotherapy (n=3), observation (n=2), or repeat surgery (n=1).
Conclusion
Reduction glossectomy in children with macroglossia secondary to VMs has acceptable outcomes in terms of cosmesis and speech, with no gastronomic restriction.
4.Functional outcomes in children with reduction glossectomy for vascular malformations – “less is more!”
John K. THOMAS ; Vivek Samuel GAIKWAD ; Telugu Ramesh BABU ; John MATHAI ; Rohit SRINIVAS ; Immanuel Sampath KARL
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2021;47(3):209-215
Objectives:
Vascular malformation (VM) of the tongue can cause true macroglossia in children. Reduction glossectomy provides primary relief when sclerotherapy has failed or is not possible. In this study, we evaluated the surgical role in functional outcome of reduction glossectomy performed for VM of the tongue.
Patients and Methods:
We evaluated the functional and surgical outcomes of seven children who were treated at a tertiary care centre in Southern India between 2013 and 2018.
Results:
Six children underwent median glossectomy, while one child underwent lateral glossectomy. Functional assessment was performed at least 2 years after the date of surgery. At the time of assessment, speech was comprehensible for three children and was occasionally unintelligible in four children. Taste and swallowing were normal in all seven children. Six children exhibited a minimal residual lesion after surgery, of which only one was symptomatic. Residual lesions were managed with sclerotherapy (n=3), observation (n=2), or repeat surgery (n=1).
Conclusion
Reduction glossectomy in children with macroglossia secondary to VMs has acceptable outcomes in terms of cosmesis and speech, with no gastronomic restriction.
5.Management plan to reduce risks in perioperative care of patients with obstructive sleep apnoea averts the need for presurgical polysomnography.
Chin Ted CHONG ; John TEY ; Shi Ling LEOW ; Wilson LOW ; Kim Meng KWAN ; Yu Lin WONG ; Thomas W K LEW
Annals of the Academy of Medicine, Singapore 2013;42(3):110-119
INTRODUCTIONObstructive sleep apnoea (OSA) is associated with increased perioperative morbidity and mortality. Patients at risk of OSA as determined by pre-anaesthesia screening based on the American Society of Anesthesiologists checklist were divided into 2 groups for comparison: (i) those who proceeded to elective surgery under a risk management protocol without undergoing formal polysomnography preoperatively and; (ii) those who underwent polysomnography and any subsequent OSA treatment as required before elective surgery. We hypothesised that it is clinically safe and acceptable for patients identified on screening as OSA at-risk to proceed for elective surgery without delay for polysomnography, with no increase in postoperative complications if managed on a perioperative risk reduction protocol.
MATERIALS AND METHODSA retrospective review of patients presenting to the preanaesthesia clinic over an 18-month period and identified to be OSA at-risk on screening checklist was conducted (n = 463). The incidence of postoperative complications for each category of OSA severity (mild-moderate and severe) in the 2 study groups was compared.
RESULTSThere was no statistically significant difference in the incidence of cardiac (3.3% vs 2.3%), respiratory (14.3% vs 12.5%), and neurologic complications (0.6% vs 0%) between the screening-only and polysomnography-confirmed OSA groups respectively (P >0.05). There was good agreement of the OSA risk that is identified by screening checklist with OSA severity as determined on formal polysomnography (kappa coefficient = 0.953).
CONCLUSIONPreviously undiagnosed OSA is common in the presurgical population. In our study, there was no significant increase in postoperative complications in patients managed on the OSA risk management protocol. With this protocol, it is clinically safe to proceed with elective surgery without delay for formal polysomnography confirmation.
Adult ; Elective Surgical Procedures ; Female ; Humans ; Male ; Middle Aged ; Perioperative Care ; Polysomnography ; Postoperative Complications ; prevention & control ; Preoperative Care ; Risk Reduction Behavior ; Sleep Apnea, Obstructive ; diagnosis
7.Utility of Seated Lateral Radiographs in the Diagnosis and Classification of Lumbar Degenerative Spondylolisthesis
Tariq Z. ISSA ; Yunsoo LEE ; Emily BERTHIAUME ; Mark J. LAMBRECHTS ; Caroline ZAWORSKI ; Qudratallah S. QADIRI ; Henley SPRACKLEN ; Richard PADOVANO ; Jackson WEBER ; John J. MANGAN ; Jose A. CANSECO ; Barrett I. WOODS ; I. David KAYE ; Alan S. HILIBRAND ; Christopher K. KEPLER ; Alexander R. VACCARO ; Gregory D. SCHROEDER ; Joseph K. LEE
Asian Spine Journal 2023;17(4):721-728
Methods:
We assessed baseline neutral upright, standing flexion, seated lateral radiographs, and magnetic resonance imaging (MRI) for patients identified with spondylolisthesis from January 2021 to May 2022 by a single spine surgeon. DS was classified by Meyerding and Clinical and Radiographic Degenerative Spondylolisthesis classifications. A difference of >10° or >8% between views, respectively, was used to characterize angular and translational instability. Analysis of variance and paired chi-square tests were utilized to compare modalities.
Results:
A total of 136 patients were included. Seated lateral and standing flexion radiographs showed the greatest slip percentage (16.0% and 16.7%), while MRI revealed the lowest (12.2%, p <0.001). Standing flexion and lateral radiographs when seated produced more kyphosis (4.66° and 4.97°, respectively) than neutral upright and MRI (7.19° and 7.20°, p <0.001). Seated lateral performed similarly to standing flexion in detecting all measurement parameters and categorizing DS (all p >0.05). Translational instability was shown to be more prevalent when associated with seated lateral or standing flexion than when combined with neutral upright (31.5% vs. 20.2%, p =0.041; and 28.1% vs. 14.6%, p =0.014, respectively). There were no differences between seated lateral or standing flexion in the detection of instability (all p >0.20).
Conclusions
Seated lateral radiographs are appropriate alternatives for standing flexion radiographs. Films taken when standing up straight do not offer any more information for DS detection. Rather than standing flexion-extension radiographs, instability can be detected using an MRI, which is often performed preoperatively, paired with a single seated lateral radiograph.
8.How Does the Severity of Neuroforaminal Compression in Cervical Radiculopathy Affect Outcomes of Anterior Cervical Discectomy and Fusion
Mark J. LAMBRECHTS ; Tariq Z. ISSA ; Yunsoo LEE ; Khoa S. TRAN ; Jeremy HEARD ; Caroline PURTILL ; Tristan B. FRIED ; Samuel OH ; Erin KIM ; John J. MANGAN ; Jose A. CANSECO ; I. David KAYE ; Jeffrey A. RIHN ; Alan S. HILIBRAND ; Alexander R. VACCARO ; Christopher K. KEPLER ; Gregory D. SCHROEDER
Asian Spine Journal 2023;17(6):1051-1058
Methods:
Patients undergoing primary, elective 1–3 level ACDF for radiculopathy at a single academic center between 2015 and 2021 were identified retrospectively. Cervical FS was evaluated using axial T2-weighted MRI images via a validated grading scale. The maximum degree of stenosis was used for multilevel disease. Motor symptoms were classified using encounters at their final preoperative and first postoperative visits, with examinations ≤3/5 indicating weakness. PROMs were obtained preoperatively and at 1-year follow-up. Bivariate analysis was used to compare outcomes based on stenosis severity, followed by multivariable analysis.
Results:
This study included 354 patients, 157 with moderate stenosis and 197 with severe stenosis. Overall, 58 patients (16.4%) presented with upper extremity weakness ≤3/5. A similar number of patients in both groups presented with baseline motor weakness (13.5% vs. 16.55, p =0.431). Postoperatively, 97.1% and 87.0% of patients with severe and moderate FS, respectively, experienced full motor recovery (p =0.134). At 1-year, patients with severe neuroforaminal stenosis presented with significantly worse 12-item Short Form Survey Physical Component Score (PCS-12) (33.3 vs. 37.3, p =0.049) but demonstrated a greater magnitude of improvement (Δ PCS-12: 5.43 vs. 0.87, p =0.048). Worse stenosis was independently associated with greater ΔPCS-12 at 1-year (β =5.59, p =0.022).
Conclusions
Patients with severe FS presented with worse preoperative physical health. While ACDF improved outcomes and conferred similar motor recovery in all patients, those with severe FS reported much better improvement in physical function.
9.Cortical Thinning in High-Grade Asymptomatic Carotid Stenosis
Randolph S. MARSHALL ; David S. LIEBESKIND ; John Huston III ; Lloyd J. EDWARDS ; George HOWARD ; James F. MESCHIA ; Thomas G. BROTT ; Brajesh K. LAL ; Donald HECK ; Giuseppe LANZINO ; Navdeep SANGHA ; Vikram S. KASHYAP ; Clarissa D. MORALES ; Dejania COTTON-SAMUEL ; Andres M. RIVERA ; Adam M. BRICKMAN ; Ronald M. LAZAR
Journal of Stroke 2023;25(1):92-100
Background:
and Purpose High-grade carotid artery stenosis may alter hemodynamics in the ipsilateral hemisphere, but consequences of this effect are poorly understood. Cortical thinning is associated with cognitive impairment in dementia, head trauma, demyelination, and stroke. We hypothesized that hemodynamic impairment, as represented by a relative time-to-peak (TTP) delay on MRI in the hemisphere ipsilateral to the stenosis, would be associated with relative cortical thinning in that hemisphere.
Methods:
We used baseline MRI data from the NINDS-funded Carotid Revascularization and Medical Management for Asymptomatic Carotid Stenosis–Hemodynamics (CREST-H) study. Dynamic contrast susceptibility MR perfusion-weighted images were post-processed with quantitative perfusion maps using deconvolution of tissue and arterial signals. The protocol derived a hemispheric TTP delay, calculated by subtraction of voxel values in the hemisphere ipsilateral minus those contralateral to the stenosis.
Results:
Among 110 consecutive patients enrolled in CREST-H to date, 45 (41%) had TTP delay of at least 0.5 seconds and 9 (8.3%) subjects had TTP delay of at least 2.0 seconds, the maximum delay measured. For every 0.25-second increase in TTP delay above 0.5 seconds, there was a 0.006-mm (6 micron) increase in cortical thickness asymmetry. Across the range of hemodynamic impairment, TTP delay independently predicted relative cortical thinning on the side of stenosis, adjusting for age, sex, hypertension, hemisphere, smoking history, low-density lipoprotein cholesterol, and preexisting infarction (P=0.032).
Conclusions
Our findings suggest that hemodynamic impairment from high-grade asymptomatic carotid stenosis may structurally alter the cortex supplied by the stenotic carotid artery.
10.Significance of Facet Fluid Index in Anterior Cervical Degenerative Spondylolisthesis
Yunsoo LEE ; Jeremy C. HEARD ; Mark J. LAMBRECHTS ; Nathaniel KERN ; Bright WIAFE ; Perry GOODMAN ; John J. MANGAN ; Jose A. CANSECO ; Mark F. KURD ; Ian D. KAYE ; Alan S. HILIBRAND ; Alexander R. VACCARO ; Christopher K. KEPLER ; Gregory D. SCHROEDER ; Jeffrey A. RIHN
Asian Spine Journal 2024;18(1):94-100
Methods:
Patients diagnosed with cervical degenerative spondylolisthesis were identified from a hospital’s medical records. Demographic and surgical characteristics were collected through a structured query language search and manual chart review. Radiographic measurements were made on preoperative MRIs for all vertebral levels diagnosed with spondylolisthesis and adjacent undiagnosed levels between C3 and C6. The facet fluid index was calculated by dividing the facet fluid measurement by the width of the facet. Bivariate analysis was conducted to compare facet characteristics based on radiographic spondylolisthesis and spondylolisthesis stability.
Results:
We included 154 patients, for whom 149 levels were classified as having spondylolisthesis and 206 levels did not. The average facet fluid index was significantly higher in patients with spondylolisthesis (0.26±0.07 vs. 0.23±0.08, p <0.001). In addition, both fluid width and facet width were significantly larger in patients with spondylolisthesis (p <0.001 each). Cervical levels in the fusion construct demonstrated a greater facet fluid index and were more likely to have unstable spondylolisthesis than stable spondylolisthesis (p <0.001 each).
Conclusions
Facet fluid index is associated with cervical spondylolisthesis and an increased facet size and fluid width are associated with unstable spondylolisthesis. While cervical spondylolisthesis continues to be an inconclusive finding, vertebral levels with spondylolisthesis, especially the unstable ones, were more likely to be included in the fusion procedure than those without spondylolisthesis.