Full Text Journal Articles by
Author Giridhar M Shivaram

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Managing systemic venous occlusions in children.

Anne E Gill, Giridhar M Shivaram,

Pediatric venous disease is increasing in incidence in both inpatient and outpatient populations. The widespread use of central venous access devices as well as the rising incidence of thromboembolic events in pediatrics is leading to more systemic venous occlusions in both the central and peripheral veins. This review focuses on ... Read more >>

CVIR Endovasc (CVIR endovascular)
[2020, 3(1):59]

Cited: 0 times

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Spinal ultrasound after failed landmarked-based lumbar puncture: a single institutional experience.

Arthie Jeyakumar, John J Weaver, Jeffrey Forris Beecham Chick, Anthony N Hage, Kevin S H Koo, Giridhar M Shivaram, Eric J Monroe,

BACKGROUND:The safety and efficacy of US-guided lumbar puncture in children has been described. In the pediatric setting, children are frequently referred to interventional radiology only after a failed landmark-based attempt. Routine pre-procedure US in these children is useful to determine a safe level for subarachnoid access and to optimize success. ... Read more >>

Pediatr Radiol (Pediatric radiology)
[2020, :]

Cited: 0 times

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Transforaminal intrathecal delivery of nusinersen for older children and adults with spinal muscular atrophy and complex spinal anatomy: an analysis of 200 consecutive injections.

John J Weaver, Danial K Hallam, Jeffrey Forris Beecham Chick, Sandeep Vaidya, David S Shin, Niranjana Natarajan, Nassim Rad, Joseph Reis, Kevin S H Koo, Giridhar M Shivaram, Ashley Thibodeau, Susan Apkon, Eric James Monroe,

BACKGROUND:Nusinersen is the only approved treatment for all spinal muscular atrophy (SMA) subtypes and is delivered intrathecally. Distorted spinal anatomy and instrumentation preclude standard approaches for intrathecal access, necessitating alternative techniques for delivery. The purpose of this study is to report technical success and adverse events of transforaminal intrathecal delivery ... Read more >>

J Neurointerv Surg (Journal of neurointerventional surgery)
[2020, :]

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Intrahepatic veno-venous collateralization and misrepresentative hepatic venous pressure gradients in children.

Eric J Monroe, Whitney Shofner Michalsky, Kevin S H Koo, Giridhar M Shivaram, Anthony N Hage, Evelyn K Hsu, Simon P Horslen, Jeffrey Forris Beecham Chick,

BACKGROUND:Accurate and reproducible means of measuring the portosystemic gradient are essential for risk stratification and treatment of portal hypertension. OBJECTIVE:To report the reliability of hepatic venous pressure gradients in children with intrahepatic veno-venous collateralization. MATERIALS AND METHODS:Between January 2012 and December 2019 (96 months), 39 patients with native livers underwent wedge ... Read more >>

Pediatr Radiol (Pediatric radiology)
[2020, 50(11):1579-1586]

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Endovascular treatment of surgical mesoportal and portosystemic shunt dysfunction in pediatric patients.

Elliot J Stein, Giridhar M Shivaram, Kevin S H Koo, Andre A S Dick, Patrick J Healey, Eric J Monroe,

BACKGROUND:Published data describing the endovascular treatment of dysfunctional mesoportal and portosystemic shunts in the pediatric population are limited. OBJECTIVE:We sought to describe the treatment and follow-up of such shunts managed by interventional radiology at a single pediatric hospital. We hypothesized that stenotic and occluded pediatric portosystemic and mesoportal shunts can ... Read more >>

Pediatr Radiol (Pediatric radiology)
[2019, 49(10):1344-1353]

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Pediatric Hepatobiliary Interventions in the Setting of Intrahepatic Vascular Malformations, Portal Hypertension, and Liver Transplant.

Eric J Monroe, Giridhar M Shivaram,

Within the broad spectrum of pediatric hepatobiliary disorders, hepatic vascular malformations, portal hypertension, and hepatic transplant interventions pose numerous challenges. The role of interventional radiology within each of these conditions is discussed herein, beginning with endovascular management of high flow hepatic vascular malformations. Next, while becoming less common in adult ... Read more >>

Semin Roentgenol (Seminars in roentgenology)
[2019, 54(4):311-323]

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An update on the use of an arterial closure device following femoral arterial puncture in children.

Jacob C Smith, Eric J Monroe, Giridhar M Shivaram, Dennis W W Shaw, Kevin S H Koo,

BACKGROUND:The use of arterial closure devices in achieving femoral hemostasis has been well documented in adults but insufficiently studied in the pediatric population. An earlier study from our institution of 40 Angio-Seal devices in 38 patients concluded that the arterial closure device is safe in children with only a single ... Read more >>

Pediatr Radiol (Pediatric radiology)
[2019, 49(9):1217-1221]

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Homozygous Mutations in CSF1R Cause a Pediatric-Onset Leukoencephalopathy and Can Result in Congenital Absence of Microglia.

Nynke Oosterhof, Irene J Chang, Ehsan Ghayoor Karimiani, Laura E Kuil, Dana M Jensen, Ray Daza, Erica Young, Lee Astle, Herma C van der Linde, Giridhar M Shivaram, Jeroen Demmers, Caitlin S Latimer, C Dirk Keene, Emily Loter, Reza Maroofian, Tjakko J van Ham, Robert F Hevner, James T Bennett,

Microglia are CNS-resident macrophages that scavenge debris and regulate immune responses. Proliferation and development of macrophages, including microglia, requires Colony Stimulating Factor 1 Receptor (CSF1R), a gene previously associated with a dominant adult-onset neurological condition (adult-onset leukoencephalopathy with axonal spheroids and pigmented glia). Here, we report two unrelated individuals with ... Read more >>

Am. J. Hum. Genet. (American journal of human genetics)
[2019, 104(5):936-947]

Cited: 15 times

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Microwave ablation of osteoid osteoma: initial experience and efficacy.

Elliot S Rinzler, Giridhar M Shivaram, Dennis W Shaw, Eric J Monroe, Kevin S H Koo,

BACKGROUND:Image-guided percutaneous microwave ablation has been used to treat adult osteoid osteomas but has not been thoroughly evaluated in the pediatric population. OBJECTIVE:To evaluate the technical feasibility and clinical efficacy of microwave ablation to treat osteoid osteomas in pediatric patients. MATERIALS AND METHODS:The electronic medical record and imaging archive were ... Read more >>

Pediatr Radiol (Pediatric radiology)
[2019, 49(4):566-570]

Cited: 1 time

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Cone-beam computed tomography guidance with navigational overlay for percutaneous lung nodule biopsy.

Giridhar M Shivaram, Anne Elizabeth Gill, Eric J Monroe, Kevin S H Koo, C Matthew Hawkins,

BACKGROUND:Cone-beam CT is increasingly used in pediatric interventional radiology procedures. However, the feasibility or safety of using this mode of imaging guidance for percutaneous lung nodule biopsy in children has not been assessed. OBJECTIVE:To retrospectively evaluate safety and diagnostic accuracy of percutaneous lung nodule biopsy in people treated at a ... Read more >>

Pediatr Radiol (Pediatric radiology)
[2019, 49(3):327-331]

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Combined glue embolization and excision for the treatment of venous malformations.

Rush H Chewning, Eric J Monroe, Antoinette Lindberg, Kevin S H Koo, Basavaraj V Ghodke, Kenneth W Gow, Patrick J Javid, Thomas M Jinguji, Jonathan A Perkins, Giridhar M Shivaram,

Background:The purpose of this study was to evaluate safety, technical success, and clinical outcomes of treatment for venous malformations using n-BCA glue embolization immediately prior to excision. Sixty three patients (22 male, 41 female; mean age 12 years (range 1-25)) who underwent 70 procedures for extremity and trunk venous malformations were ... Read more >>

(CVIR endovascular)
[2018, 1(1):22]

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Emergent embolization of a ruptured splenic artery aneurysm complicating Menkes disease.

John F Olivieri, Arthie Jeyakumar, Giridhar M Shivaram, Kevin S H Koo, Eric J Monroe,

We report a 7-year-old boy with Menkes disease complicated by rupture of a large splenic artery aneurysm. The aneurysm was successfully embolized with microcoils and n-butyl cyanoacrylate. Further angiographic evaluation revealed marked tortuosity of mesenteric and lower extremity vasculature, including the femoral arteries bilaterally, without aneurysm formation. The patient has ... Read more >>

(Radiology case reports)
[2018, 13(6):1267-1270]

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Catheter-Directed Thrombolysis for Portal Vein Thrombosis in Children: A Case Series.

Kevin S H Koo, David L Lamar, Dennis W W Shaw, Eric J Monroe, Giridhar M Shivaram,

PURPOSE:To describe safety and efficacy of catheter-directed thrombolysis (CDT) for portal vein thrombosis (PVT) in children. MATERIALS AND METHODS:Retrospective review was performed of 10 consecutive patients (7 girls, 3 boys; mean age 11.9 y; range, 3-17 y) with PVT undergoing CDT at a single tertiary children's hospital between August 2005 ... Read more >>

J Vasc Interv Radiol (Journal of vascular and interventional radiology : JVIR)
[2018, 29(11):1578-1583]

Cited: 0 times

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Benefits and risks of protocol biopsies in pediatric renal transplantation.

Roberto Gordillo, Raj Munshi, Eric J Monroe, Giridhar M Shivaram, Jodi M Smith,

Protocol biopsies are defined as sampling of allograft tissue at predetermined times regardless of function. This procedure can be justified due to the lack of non-invasive methods to reliably diagnose rejection (acute or subclinical). Changes in creatinine are not seen with subclinical rejection or early acute rejection and do not ... Read more >>

Pediatr. Nephrol. (Pediatric nephrology (Berlin, Germany))
[2019, 34(4):593-598]

Cited: 2 times

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An Interventionalist's Guide to Hemoptysis in Cystic Fibrosis.

Eric J Monroe, David B Pierce, Christopher R Ingraham, Guy E Johnson, Giridhar M Shivaram, Karim Valji,

Massive hemoptysis occurs in a minority of patients with cystic fibrosis, with an annual incidence of 1%. Although rare, massive hemoptysis can be a severe and potentially fatal complication of this disease. Beyond the acute life-threatening event, hemoptysis in patients with cystic fibrosis has been associated with faster decline in ... Read more >>

Radiographics (Radiographics : a review publication of the Radiological Society of North America, Inc)
[2018, 38(2):624-641]

Cited: 1 time

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Use of 3D reconstruction cloacagrams and 3D printing in cloacal malformations.

Jennifer J Ahn, Margarett Shnorhavorian, Anne-Marie E Amies Oelschlager, Beth Ripley, Giridhar M Shivaram, Jeffrey R Avansino, Paul A Merguerian,

INTRODUCTION:Cloacal anomalies are complex to manage, and the anatomy affects prognosis and management. Assessment historically includes examination under anesthesia, and genitography is often performed, but these do not consistently capture three-dimensional (3D) detail or spatial relationships of the anatomic structures. Three-dimensional reconstruction cloacagrams can provide a high level of detail ... Read more >>

J Pediatr Urol (Journal of pediatric urology)
[2017, 13(4):395.e1-395.e6]

Cited: 1 time

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Single-stick tunneled central venous access using the jugular veins in infants weighing less than 5 kg.

Will S Lindquester, C Matthew Hawkins, Eric J Monroe, Anne E Gill, Giridhar M Shivaram, F Glen Seidel, Matthew P Lungren,

Despite the demonstrated feasibility of the single-stick technique in the femoral vein, its use in neonates and infants for placing central lines in internal and external jugular veins has not been reported.Describe and assess the safety and efficacy of tunneled jugular central venous catheter placement performed under ultrasound (US) and ... Read more >>

Pediatr Radiol (Pediatric radiology)
[2017, 47(12):1682-1687]

Cited: 0 times

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Standardized outcome and reporting measures in pediatric head and neck lymphatic malformations.

Karthik Balakrishnan, Nancy Bauman, Robert H Chun, David H Darrow, J Fredrik Grimmer, Jonathan A Perkins, Gresham T Richter, Jennifer J Shin, Giridhar M Shivaram, Douglas R Sidell, Ravindhra G Elluru,

OBJECTIVE: To develop general and site-specific treatment effect and outcome measures to standardize the reporting of head and neck lymphatic malformation (HNLM) treatments. STUDY DESIGN: Consensus statement/expert opinion. SETTING: Multiple tertiary academic institutions. SUBJECTS AND METHODS: The modified Delphi method is an iterative process of collecting expert opinions, refining opinions ... Read more >>

Otolaryngol Head Neck Surg (Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery)
[2015, 152(5):948-953]

Cited: 8 times

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Pediatric liver transplant portal vein anastomotic stenosis: correlation between ultrasound and transhepatic portal venography.

C Matthew Hawkins, Dennis W W Shaw, Patrick J Healey, Simon P Horslen, Andre A S Dick, Seth Friedman, Giridhar M Shivaram,

The objective of this study was to determine which transabdominal ultrasound parameters correlate with portal vein stenosis (PVS) on percutaneous transhepatic portal venography in pediatric liver transplant patients. A retrospective review was performed of percutaneous transhepatic portal venograms performed between 2005 and 2013. The findings were compared to those from ... Read more >>

Liver Transpl. (Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society)
[2015, 21(4):547-553]

Cited: 1 time

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Novel early response genes in osteoblasts exposed to dynamic fluid flow.

Giridhar M Shivaram, Chi Hyun Kim, Nikhil N Batra, Wuchen Yang, Stephen E Harris, Christopher R Jacobs,

Cyclic mechanical loads applied to the skeleton from habitual physical activity result in increased bone formation. These loads lead to dynamic pressure gradients and oscillatory flow of bone interstitial fluid, which, in turn, exposes cells resident in the bony matrix to oscillatory fluid shear stress. Dynamic fluid flow has previously ... Read more >>

Philos Trans A Math Phys Eng Sci (Philosophical transactions. Series A, Mathematical, physical, and engineering sciences)
[2010, 368(1912):605-616]

Cited: 2 times

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Temporal progression of skeletal cystic angiomatosis.

Giridhar M Shivaram, Reetesh K Pai, Kevin B Ireland, Kathryn J Stevens,

Cystic angiomatosis is a rare, benign, multifocal disorder of bone and viscera, in which angiomatous deposits of both vascular and lymphatic elements result in bone lysis and organ dysfunction. We report on a case of late-onset cystic angiomatosis in a Caucasian woman who first presented at age 35 years with ... Read more >>

Skeletal Radiol. (Skeletal radiology)
[2007, 36(12):1199-1204]

Cited: 8 times

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