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Hypocalcaemia

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https://www.readbyqxmd.com/read/29147113/clinical-presentation-management-and-outcomes-of-primary-hyperparathyroidism-during-pregnancy
#1
Ya Hu, Ming Cui, Zhengyi Sun, Zhe Su, Xiang Gao, Quan Liao, Yupei Zhao
Background: Primary hyperparathyroidism (pHPT) in pregnancy is a rare event, but it poses a significant risk to mothers and fetuses. The optimal treatment strategy remains controversial. Methods: We present a consecutive series of twelve pregnant women with pHPT. Results: Twelve women were diagnosed with pHPT during pregnancy or in the postpartum period. Four of them presented no symptoms or mild symptoms. Four patients experienced serious complications, including hypercalcaemic crisis, acute pancreatitis, and eclampsia...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29144799/parathyroid-function-after-total-thyroidectomy-a-randomized-clinical-trial-concerning-the-influence-of-the-surgical-technique
#2
Theodossis S Papavramidis, Olympia Anastasiou, Ioannis Pliakos, George Kotsovolis, Stavros Panidis, Antonios Michalopoulos
Background Thyroidectomy impairs parathyroid function, even if it does not necessarily lead to postoperative clinical hypocalcaemia. This study is prospective and evaluates the PTH function in non-clinically symptomatic patients after total thyroidectomy performed by two different techniques. Materials and Methods Prospective randomized clinical trial including 269 patients undergoing classic (group A) or harmonic scalpel (group B) total thyroidectomy. Preoperatively and at 48 hours biochemical analysis was performed...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29142830/parathyroid-hormone-and-serum-calcium-levels-measurements-as-predictors-of-postoperative-hypocalcemia-in-total-thyroidectomy
#3
Mohammed Algarni, Rajab Alzahrani, Gianlorenzo Dionigi, Al-Hakami Hadi, Haia AlSubayea
Background: The rules of quantitative measures such as parathyroid hormone (PTH) levels in the first hours following total thyroidectomy have since been validated repeatedly. Such measures play an integral rule in identifying patients at significant risk for hypocalcaemia and have allowed for earlier supplementation of these patients with calcium with or without vitamin D. Methods: A retrospective analysis was conducted of 40 consecutive patients with well differentiated thyroid cancer (WDTC) who underwent total thyroidectomy without central neck dissection (CND) as an initial surgery and no comorbidity at King Abdulaziz Medical City (National Guard hospital), between July 2011 and July 2012...
October 2017: Gland Surgery
https://www.readbyqxmd.com/read/29127708/calcimimetic-and-calcilytic-therapies-for-inherited-disorders-of-the-calcium-sensing-receptor-signalling-pathway
#4
REVIEW
Fadil M Hannan, Mie K Olesen, Rajesh V Thakker
THE CALCIUM-SENSING RECEPTOR (CAS RECEPTOR) PLAYS A PIVOTAL ROLE IN EXTRACELLULAR CALCIUM HOMEOSTASIS AND GERMLINE LOSS- AND GAIN-OF-FUNCTION MUTATIONS CAUSE FAMILIAL HYPOCALCIURIC HYPERCALCAEMIA (FHH) AND AUTOSOMAL DOMINANT HYPOCALCAEMIA (ADH), RESPECTIVELY. CAS RECEPTOR SIGNAL TRANSDUCTION IN THE PARATHYROID GLANDS IS LIKELY REGULATED BY G-PROTEIN SUBUNIT Α11 (GΑ11) AND ADAPTOR-RELATED PROTEIN COMPLEX-2 SIGMA SUBUNIT (AP2Σ), AND RECENT STUDIES HAVE IDENTIFIED GERMLINE MUTATIONS OF THESE PROTEINS AS A CAUSE OF FHH AND/OR ADH...
November 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29120026/risk-factors-for-hypocalcaemia-after-completion-hemithyroidectomy-in-thyroid-cancer
#5
Baktash Aqtashi, Nader Ahmad, Angela Frotzler, Simon Bähler, Thomas Linder, Werner Müller
BACKGROUND: Hypocalcaemia (HC) is the most common complication after thyroid surgery in differentiated thyroid cancer and leads to a prolongation of the hospital stay. While risk factors for HC after total thyroidectomy (TE) are well investigated, only few studies have been published about HC risk factors after completion of thyroidectomy. Our aim was to identify potential risk factors for HC after completion of TE and to compare these incidences with figures from primary total TE. MATERIALS AND METHODS: A retrospective cohort study was undertaken including patients undergoing completion of TE between 2002 and 2013 in our tertiary care centre...
November 9, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29107998/impact-of-surgical-parathyroidectomy-on-chronic-kidney-disease-mineral-and-bone-disorder-ckd-mbd-a-systematic-review-and-meta-analysis
#6
Mugurel Apetrii, David Goldsmith, Ionut Nistor, Dimitrie Siriopol, Luminita Voroneanu, Dragos Scripcariu, Marc Vervloet, Adrian Covic
For more than 6 decades, many patients with advanced chronic kidney disease (CKD) have undergone surgical parathyroidectomy (sPTX) for severe secondary hyperparathyroidism (SHPT) mainly based historical clinical practice patterns, but not on evidence of outcome.We aimed in this meta-analysis to evaluate the benefits and harms of sPTX in patients with SHPT. We searched MEDLINE (inception to October 2016), EMBASE and Cochrane Library (through Issue 10 of 12, October 2016) and website clinicaltrials.gov (October 2016) without language restriction...
2017: PloS One
https://www.readbyqxmd.com/read/29062340/biochemical-markers-of-mineral-bone-disorder-in-south-african-patients-on-maintenance-haemodialysis
#7
Bala Waziri, Raquel Duarte, Saraladevi Naicker
BACKGROUND AND OBJECTIVE: Despite the high mortality and morbidity associated with abnormalities in mineral and bone metabolism in haemodialysis patients, there is limited data on the pattern of mineral bone disorder in African CKD population. Therefore, the purpose of this study was to describe the pattern of mineral bone disease by evaluating biochemical parameters in patients on maintenance haemodialysis (MHD). METHODS: We evaluated the serum/plasma intact parathyroid hormone (iPTH), corrected calcium, phosphate, total alkaline phosphatase (TALP) and 25 -OH vitamin D levels of two hundred and seven patients undergoing MHD at two dialysis centers in Johannesburg...
June 2017: African Health Sciences
https://www.readbyqxmd.com/read/29055723/proteomics-and-metabolomics-characterizing-the-pathophysiology-of-adaptive-reactions-to-the-metabolic-challenges-during-the-transition-from-late-pregnancy-to-early-lactation-in-dairy-cows
#8
Fabrizio Ceciliani, Cristina Lecchi, Christiane Urh, Helga Sauerwein
The transition from late pregnancy to early lactation is a critical period in a dairy cow's life due to the rapidly increasing drain of nutrients from the maternal organism towards the foetus and into colostrum and milk. In order to cope with the challenges of parturition and lactation, comprehensive adaptive reactions comprising the endocrine and the immune system need to be accomplished. There is high variation in this coping ability and both metabolic and infectious diseases, summarized as "production diseases", such as hypocalcaemia (milk fever), fatty liver syndrome, laminitis and ketosis, may occur and impact welfare, productive lifespan and economic outcomes...
October 18, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/29022989/prophylactic-intravenous-calcium-therapy-for-exchange-blood-transfusion-in-the-newborn
#9
REVIEW
Tinuade A Ogunlesi, Foluso Ea Lesi, Olabisi Oduwole
BACKGROUND: Exchange blood transfusion (EBT) is a form of whole blood transfusion in which the total blood volume is replaced within a few hours. In perinatal and neonatal medicine, EBT is most often used in the management of severe anaemia or severe hyperbilirubinaemia in the first week of life. Hypocalcaemia, one of the common morbidities associated with EBT, is thought to arise from the chelating effects of the citrate commonly used as an anticoagulant in the donor's blood. This disorder manifests with muscular and nervous irritability and cardiac arrhythmias...
October 12, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28993435/impact-of-intercurrent-illness-on-calcium-homeostasis-in-children-with-hypoparathyroidism-a-case-series
#10
A Chinoy, M Skae, A Babiker, D Kendall, M Z Mughal, R Padidela
BACKGROUND: Hypoparathyroidism is characterised by hypocalcaemia, and standard management is with an active vitamin D analogue and adequate oral calcium intake (dietary and/or supplements). Little is described in the literature about the impact of intercurrent illnesses on calcium homeostasis in children with hypoparathyroidism. METHODS: We describe three children with hypoparathyroidism in whom intercurrent illnesses led to hypocalcaemia and escalation of treatment with alfacalcidol (1-hydroxycholecalciferol) and calcium supplements...
November 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28976876/parathyroidectomy-in-hyperparathyroidism-associated-calciphylaxis-in-end-stage-renal-disease-should-be-prompt-and-radical-a-case-report-with-two-original-therapeutic-modifications-and-successful-outcome
#11
Sylvie Dusilová Sulková, Jiří Horáček, Eva Vykoukalová, Roman Šafránek, Alena Malá, Vladimír Palička
We present a case of severe calciphylaxis in both thighs and calves in a patient with end-stage renal disease and advanced secondary hyperparathyroidism with successful outcome after modified therapeutic approach. The cause of calciphylaxis is multifactorial. In our case, not only severe hyperparathyroidism and mediocalcinosis, but also medication (warfarin, calcium and active vitamin D) was involved. Because the initial conservative therapy was not successful, we indicated parathyroidectomy. However, we were not able to localize parathyroid glands and we contraindicated bilateral neck exploration due to the patient's critical status...
2017: Acta Medica (Hradec Králové)
https://www.readbyqxmd.com/read/28926829/continuous-subcutaneous-recombinant-parathyroid-hormone-1-34-infusion-in-the-management-of-childhood-hypoparathyroidism-associated-with-malabsorption
#12
Vrinda Saraff, Anya Rothenbuhler, Wolfgang Högler, Agnès Linglart
BACKGROUND/AIMS: Hypoparathyroidism associated with malabsorption can be particularly challenging to manage due to limited and erratic intestinal absorption of calcium and vitamin D analogues, resulting in episodes of hypo- or hypercalcaemia. We evaluated the role of continuous subcutaneous recombinant parathyroid hormone (rhPTH 1-34) infusion (CSPI) in children with hypoparathyroidism associated with intestinal malabsorption resistant to conventional therapy. METHOD: Four patients (8-13 years of age), with symptomatic hypocalcaemia resistant to conventional therapy, were started on CSPI (follow-up 3-8 years) in two paediatric endocrinology units in Europe...
September 19, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28924246/rna-seq-analysis-of-the-kidneys-of-broiler-chickens-fed-diets-containing-different-concentrations-of-calcium
#13
Woncheoul Park, Deivendran Rengaraj, Dong-Yong Kil, Heebal Kim, Hak-Kyo Lee, Ki-Duk Song
Calcium (Ca) is required for normal growth and is involved in cellular physiology, signal transduction, and bone mineralization. In humans, inadequate Ca intake causes hypocalcaemia, and excessive Ca intake causes hypercalcemia. In chicken, Ca is also required for body weight gain and eggshell formation. However, transcriptomic responses to low/high Ca intake, and mechanisms affecting body weight have not been explored. In this study, we performed comparative RNA sequencing (RNA-seq) using the kidney of broiler chickens fed diets containing 0...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28877925/the-impact-of-vitamin-d-status-on-hungry-bone-syndrome-after-surgery-for-primary-hyperparathyroidism
#14
Reto Martin Kaderli, Philipp Riss, Daniela Dunkler, Peter Pietschmann, Andreas Selberherr, Christian Scheuba, Bruno Niederle
OBJECTIVE: Prolonged hypocalcemia but normal intact parathyroid hormone (iPTH) levels after surgery for primary hyperparathyroidism (PHPT) are referred to as 'hungry bone syndrome' (HBS). The aim was to evaluate preoperative risk factors for HBS with a focus on the impact of 25-hydroxyvitamin D (25(OH)D) deficiency. DESIGN: Patients having undergone initial successful surgery for sporadic PHPT within 6 years were considered for retrospective analysis. METHODS: A total of 385 patients were evaluated, of whom 33 (8...
January 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28874217/impact-of-pre-operative-serum-25-hydroxyvitamin-d-on-post-operative-serum-calcium-in-patients-undergoing-total-thyroidectomy-for-benign-goitre-retrospective-study-of-246-patients
#15
M Erlem, N Klopp-Dutote, A Biet-Hornstein, V Strunski, C Page
OBJECTIVE: To determine whether pre-operative serum 25-hydroxyvitamin D has an impact on post-operative parathyroid hormone and serum calcium levels in patients undergoing total thyroidectomy for benign goitre. METHODS: This single-centre, retrospective study comprised 246 unselected surgical patients who had undergone total thyroidectomy for bilateral, benign, multinodular goitre. The correlation between pre-operative serum 25-hydroxyvitamin D and post-operative serum parathyroid hormone and serum calcium was studied to determine whether low pre-operative serum 25-hydroxyvitamin D was predictive of post-operative hypocalcaemia...
October 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28873971/clinical-practice-recommendations-for-treatment-with-active-vitamin-d-analogues-in-children-with-chronic-kidney-disease-stages-2-5-and-on-dialysis
#16
Rukshana Shroff, Mandy Wan, Evi V Nagler, Sevcan Bakkaloglu, Mario Cozzolino, Justine Bacchetta, Alberto Edefonti, Constantinos J Stefanidis, Johan Vande Walle, Gema Ariceta, Günter Klaus, Dieter Haffner, Claus Peter Schmitt
In patients with chronic kidney disease (CKD), renal synthesis of active vitamin D [1,25-dihydroxyvitamin D (1,25(OH)2D)] declines and is associated with hypocalcaemia, secondary hyperparathyroidism and the spectrum of CKD-mineral and bone disorder (MBD). In advanced CKD, active vitamin D analogues, including alfacalcidol, calcitriol and paricalcitol, are routinely administered. There are few studies on the use of vitamin D analogues in children with CKD and on dialysis. It is difficult to define bone-specific outcomes that can guide treatment with active vitamin D analogues in children with CKD-MBD...
July 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28857066/hypoparathyroidism
#17
REVIEW
Michael Mannstadt, John P Bilezikian, Rajesh V Thakker, Fadil M Hannan, Bart L Clarke, Lars Rejnmark, Deborah M Mitchell, Tamara J Vokes, Karen K Winer, Dolores M Shoback
Hypoparathyroidism is a disease characterized by inadequately low circulating concentrations of parathyroid hormone (PTH) resulting in low calcium levels and increased phosphate levels in the blood. Symptoms of the disease result from increased neuromuscular irritability caused by hypocalcaemia and include tingling, muscle cramps and seizures. The most common cause of the disease is inadvertent removal of, or injury to, the parathyroid glands during neck surgery, followed by genetic, idiopathic and autoimmune aetiologies...
August 31, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28782797/in-situ-preservation-of-the-inferior-parathyroid-gland-during-central-neck-dissection-for-papillary-thyroid-carcinoma
#18
J B Wang, K Wu, L H Shi, Y Y Sun, F B Li, L Xie
BACKGROUND: Postoperative hypocalcaemia due to dysfunction of the parathyroid glands is the most common complication after total thyroidectomy plus central neck dissection (CND). There is a lack of surgical techniques described to help preserve the inferior parathyroid gland in situ during CND. The objective of this study was to introduce the 'TBP layer' (layer of thymus-blood vessel-inferior parathyroid gland) concept for preserving the inferior parathyroid gland in situ during CND, and to evaluate its effectiveness...
October 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28765190/reversible-central-neural-hyperexcitability-an-electroencephalographic-clue-to-hypocalcaemia
#19
Bhagyadhan A Patel, Rahul T Chakor, Kaumil V Kothari, Swaleha Nadaf
A 23-year-old male patient presented with cognitive decline and seizures. Examination revealed Chvostek's and Trousseau's signs. Investigations revealed hypocalcaemia, hyperphosphatemia and normal intact parathyroid hormone levels. Imaging showed calcifications in bilateral basal ganglia, thalamus and dentate nuclei. Interictal electroencephalogram showed theta range slowing of background activity and bilateral temporo-occipital, irregular, sharp and slow wave discharges, which accentuated during hyperventilation, photic stimulation and eye closure...
August 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28741586/a-new-mutation-in-the-calcium-sensing-receptor-gene-causing-hypocalcaemia-case-report-of-a-father-and-two-sons
#20
M K Schoutteten, B Bravenboer, S Seneca, K Stouffs, B Velkeniers
BACKGROUND: Regulation of calcium is mediated by parathyroid hormone (PTH) and 1.25-dihydroxyvitamine D3. The calcium-sensing receptor (CaSR) regulates PTH release by a negative feedback system. Gain-of-function mutations in the CaSR gene reset the calcium-PTH axis, leading to hypocalcaemia. PATIENTS AND METHODS: We analysed a family with hypocalcaemia. The proband was a 47-year-old man (index, patient I1), who presented with paraesthesias in both limbs. He has two sons (patient II1 a nd I I2)...
July 2017: Netherlands Journal of Medicine
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