Initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders

Abstract Background Immunoglobulin therapy plays a critical role in the treatment of immunodeficiency disorders as well as autoimmune and inflammatory conditions. In immunodeficient patients, there has been controversy whether initial loading doses of intravenous (IVIG) should be based on actual bod...

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Main Author: Rohan Ameratunga
Format: Article
Language:English
Published: BMC 2017-12-01
Series:Allergy, Asthma & Clinical Immunology
Subjects:
Online Access:http://link.springer.com/article/10.1186/s13223-017-0220-y
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author Rohan Ameratunga
author_facet Rohan Ameratunga
author_sort Rohan Ameratunga
collection DOAJ
description Abstract Background Immunoglobulin therapy plays a critical role in the treatment of immunodeficiency disorders as well as autoimmune and inflammatory conditions. In immunodeficient patients, there has been controversy whether initial loading doses of intravenous (IVIG) should be based on actual body weight or a calculated parameter such as adjusted body weight in obese patients. Case presentation I describe a patient with Common Variable Immunodeficiency disorder (CVID) who underwent bariatric surgery for morbid obesity. Her weight decreased by 50% to below her calculated ideal body weight (IBW) while her immunoglobulin requirement fell by approximately 20%. Her steady state serum IgG increased from approximately 7 g/l to 11.7 g/l concomitant with weight loss. Conclusions I present this observation as support for the recommendation that initial loading doses of SCIG/IVIG in immunodeficiency should be based on adjusted body weight (AjBW) and not actual body weight in obese patients. This has important fiscal implications for treating obese patients with immunodeficiency disorders.
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spelling doaj.art-a93b9680d39e4e15bc620529a48582622022-12-21T17:14:59ZengBMCAllergy, Asthma & Clinical Immunology1710-14922017-12-011311510.1186/s13223-017-0220-yInitial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disordersRohan Ameratunga0Department of Clinical Immunology, Auckland HospitalAbstract Background Immunoglobulin therapy plays a critical role in the treatment of immunodeficiency disorders as well as autoimmune and inflammatory conditions. In immunodeficient patients, there has been controversy whether initial loading doses of intravenous (IVIG) should be based on actual body weight or a calculated parameter such as adjusted body weight in obese patients. Case presentation I describe a patient with Common Variable Immunodeficiency disorder (CVID) who underwent bariatric surgery for morbid obesity. Her weight decreased by 50% to below her calculated ideal body weight (IBW) while her immunoglobulin requirement fell by approximately 20%. Her steady state serum IgG increased from approximately 7 g/l to 11.7 g/l concomitant with weight loss. Conclusions I present this observation as support for the recommendation that initial loading doses of SCIG/IVIG in immunodeficiency should be based on adjusted body weight (AjBW) and not actual body weight in obese patients. This has important fiscal implications for treating obese patients with immunodeficiency disorders.http://link.springer.com/article/10.1186/s13223-017-0220-yCVIDBariatric surgeryIVIGSCIG
spellingShingle Rohan Ameratunga
Initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders
Allergy, Asthma & Clinical Immunology
CVID
Bariatric surgery
IVIG
SCIG
title Initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders
title_full Initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders
title_fullStr Initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders
title_full_unstemmed Initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders
title_short Initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders
title_sort initial intravenous immunoglobulin doses should be based on adjusted body weight in obese patients with primary immunodeficiency disorders
topic CVID
Bariatric surgery
IVIG
SCIG
url http://link.springer.com/article/10.1186/s13223-017-0220-y
work_keys_str_mv AT rohanameratunga initialintravenousimmunoglobulindosesshouldbebasedonadjustedbodyweightinobesepatientswithprimaryimmunodeficiencydisorders