1. Aetiological diagnosis of hyponatraemia in non-critical patients on total parenteral nutrition: A prospective multicentre study
- Author
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Julia Álvarez Hernández, María Victoria García Zafra, Yaiza García Delgado, Luis Miguel Luengo Pérez, María Julia Ocón Bretón, María Dolores Ballesteros Pomar, Daniel Antonio de Luis Román, María Argente Pla, Angel Luis Abad Gonzalez, Emilia Gómez-Hoyos, Irene Bretón Lemes, Ana Herrero Ruiz, Francisco Botella Romero, Alejandra Herranz Antolín, Cristina Tejera Pérez, María Dolores del Olmo García, Alfonso Vidal Casariego, Isabelle Runkle de la Vega, Miguel Ángel Martínez Olmos, Pilar Matía Martín, Ana Ortola Buigues, Carmen Tenorio Jiménez, and Maria Jose Tapia Guerrero
- Subjects
Male ,medicine.medical_specialty ,Cirrhosis ,endocrine system diseases ,Nausea ,Aetiology of hyponatraemia, Estímulo fisiológico de la secreción de AVP, Etiología de la hiponatremia, Nutrición parenteral, Parenteral nutrition, Physiological stimuli of AVP secretion, SIADH ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Urinary system ,Hypovolemia ,Renal function ,Pain ,Etiología de la hiponatremia ,Nutrición parenteral ,Gastroenterology ,Inappropriate ADH Syndrome ,Estímulo fisiológico de la secreción de AVP ,Endocrinology ,Internal medicine ,medicine ,Humans ,Prospective Studies ,Aged ,Nutrition and Dietetics ,business.industry ,Aetiology of hyponatraemia ,SIADH ,nutritional and metabolic diseases ,medicine.disease ,Parenteral nutrition ,nervous system diseases ,Syndrome of inappropriate antidiuretic hormone secretion ,Urine osmolality ,Female ,Parenteral Nutrition, Total ,Physiological stimuli of AVP secretion ,medicine.symptom ,Diuretic ,business ,Hyponatremia - Abstract
BACKGROUND: In patients receiving total parenteral nutrition (TPN), the frequency of hyponatraemia is high. However, the causes of hyponatraemia in TPN have not been elucidated, although diagnosis is required for appropriate therapy. The aim of this study is to describe the aetiology of hyponatraemia in non-critical hospitalised patients receiving TPN. METHODS: Prospective multicentre study in 19 Spanish hospitals. Non-critically hyponatraemic patients receiving TPN and presenting hyponatraemia over a 9-month period were studied. Data collected included sex, age, previous comorbidities, and serum sodium levels (SNa) before and following TPN initiation. Parameters for study of hyponatraemia were also included: clinical volaemia, the presence of pain, nausea, gastrointestinal losses, diuretic use, oedema, renal function, plasma and urine osmolality, urinary electrolytes, cortisolaemia, and thyroid stimulating hormone. RESULTS: 162 patients were included, 53.7% males, age 66.4 (SD13.8) years. Volume status was evaluated in 142 (88%): 21 (14.8%) were hypovolaemic, 96 (67.6%) euvolaemic and 25 (17.6%) hypervolaemic. In 111/142 patients the analytical assessment of hyponatraemia was completed. Hypovolaemic hyponatraemia was secondary to GI losses in 10/111 (9%), and to diuretics in 3/111 (2.7%). Euvolaemic hyponatraemia was due to Syndrome of Inappropriate Antidiuretic Hormone secretion (SIADH) in 47/111 (42.4%), and to physiological stimuli of Arginine Vasopressin (AVP) secretion in 28/111 (25.2%). Hypervolaemic hyponatraemia was induced by heart failure in 19/111 (17.1%), cirrhosis of the liver in 4/111 (3.6%). CONCLUSIONS: SIADH was the most frequent cause of hyponatraemia in patients receiving TPN. The second most frequent cause was physiological stimuli of AVP secretion induced by pain/nausea.
- Published
- 2022