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. 2019 Sep 5;9(1):99.
doi: 10.1186/s13613-019-0574-z.

Serum sodium and intracranial pressure changes after desmopressin therapy in severe traumatic brain injury patients: a multi-centre cohort study

Affiliations

Serum sodium and intracranial pressure changes after desmopressin therapy in severe traumatic brain injury patients: a multi-centre cohort study

A Harrois et al. Ann Intensive Care. .

Erratum in

Abstract

Background: In traumatic brain injury (TBI) patients desmopressin administration may induce rapid decreases in serum sodium and increase intracranial pressure (ICP).

Aim: In an international multi-centre study, we aimed to report changes in serum sodium and ICP after desmopressin administration in TBI patients.

Methods: We obtained data from 14 neurotrauma ICUs in Europe, Australia and UK for severe TBI patients (GCS ≤ 8) requiring ICP monitoring. We identified patients who received any desmopressin and recorded daily dose, 6-hourly serum sodium, and 6-hourly ICP.

Results: We studied 262 severe TBI patients. Of these, 39 patients (14.9%) received desmopressin. Median length of treatment with desmopressin was 1 [1-3] day and daily intravenous dose varied between centres from 0.125 to 10 mcg. The median hourly rate of decrease in serum sodium was low (- 0.1 [- 0.2 to 0.0] mmol/L/h) with a median period of decrease of 36 h. The proportion of 6-h periods in which the rate of natremia correction exceeded 0.5 mmol/L/h or 1 mmol/L/h was low, at 8% and 3%, respectively, and ICPs remained stable. After adjusting for IMPACT score and injury severity score, desmopressin administration was independently associated with increased 60-day mortality [HR of 1.83 (1.05-3.24) (p = 0.03)].

Conclusions: In severe TBI, desmopressin administration, potentially representing instances of diabetes insipidus is common and is independently associated with increased mortality. Desmopressin doses vary markedly among ICUs; however, the associated decrease in natremia rarely exceeds recommended rates and median ICP values remain unchanged. These findings support the notion that desmopressin therapy is safe.

Keywords: Desmopressin; Diabetes insipidus; Natremia; Sodium; Traumatic brain injury.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Natremia during ICU stay according to desmopressin administration status. Red dots = natremia at a given time in patients who received desmopressin, Red curve = average natremia over time in patients who received desmopressin. Black dots = natremia at a given time in patients who did not receive desmopressin, Black curve = average natremia of patients who did not receive desmopressin. p < 0.001 for natremia over time between patients who received desmopressin and those who did not receive desmopressin (two-way ANOVA)
Fig. 2
Fig. 2
Median daily desmopressin dose in patients who received desmopressin. Boxplot represents median, quartiles and minimum/maximum values
Fig. 3
Fig. 3
Intracranial pressure changes after a natremia correction rate higher than 0.5 mmol/L/h (during 6 h). The red boxplots correspond to the median ICPs and interquartile ranges at the start and at the end of the six-hour period (three patients with raised ICPs of 37, 43 and 73 mmHg at time 0 increased their ICPs up to 59, 54 and 100, respectively, 6 h after. They died early at day 2, 3 and 4, respectively, suggesting their DI was related to brain death)

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