Editorial
How much weight today doctor? Overconfidence or zeal excess
¿Cuánto peso hoy doctor? Exceso de celo o exceso de confianza
T. Grau Carmona
Servicio de Medicina Intensiva, Hospital Universitario Doce de Octubre, Madrid, Spain
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"apellidos" => "Acosta Escribano" ] ] ] ] ] "idiomaDefecto" => "en" "Traduccion" => array:1 [ "es" => array:9 [ "pii" => "S0210569117302796" "doi" => "10.1016/j.medin.2017.09.008" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "es" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0210569117302796?idApp=WMIE" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173572718301176?idApp=WMIE" "url" => "/21735727/0000004200000006/v1_201807240414/S2173572718301176/v1_201807240414/en/main.assets" ] ] "en" => array:12 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Editorial</span>" "titulo" => "How much weight today doctor? Overconfidence or zeal excess" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "327" "paginaFinal" => "328" ] ] "autores" => array:1 [ 0 => array:3 [ "autoresLista" => "T. Grau Carmona" "autores" => array:1 [ 0 => array:3 [ "nombre" => "T." "apellidos" => "Grau Carmona" "email" => array:1 [ 0 => "teodoro.grau@salud.madrid.org" ] ] ] "afiliaciones" => array:1 [ 0 => array:2 [ "entidad" => "Servicio de Medicina Intensiva, Hospital Universitario Doce de Octubre, Madrid, Spain" "identificador" => "aff0005" ] ] ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "¿Cuánto peso hoy doctor? Exceso de celo o exceso de confianza" ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">In this number of the journal, Dr. García-Martínez et al. present the results of a survey on the quality of body weight and height measurements in critically ill patients admitted to the Intensive Care Unit (ICU). The authors interview a representative sample of intensivists and nurses in the ICU with the aim of: (a) determining whether they have equipment for measuring patient weight and height; (b) evaluating the use made of such equipment; and (c) assessing the perceived importance of measuring these parameters. The study shows that the ICU professionals make little use of instruments for measuring body weight and height. In effect, such instruments are only employed occasionally, and the values are generally estimated on a subjective basis–even though these professionals admit that the availability of real rather than estimated values has an impact upon patient safety.<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">1</span></a> The study shows that the clinicians consider it sufficient to know the approximate weight and height, in a limited number of patients, and in certain clinical situations. On the other hand, the nurses in the ICU do not consider it essential to systematically obtain reliable and precise measurements of patient weight and height.</p><p id="par0010" class="elsevierStylePara elsevierViewall">As pointed out by the authors and by other work groups in Spain, from the theoretical perspective the obtainment of real measurements rather than estimates of weight and height should be standard practice upon patient admission and during stay in the ICU.<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">2</span></a> Knowing adult patient weight and height is considered to be crucial for the prescription of drugs with a narrow therapeutic window, for the use of mechanical ventilation, for calculating nutritional needs, and for assessing water balance.<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">3</span></a> However, only a limited number of longitudinal studies have evaluated the true impact of the lack of precision and accuracy in estimating weight and height–a fact that helps explain the scant interest shown by the professionals in this survey. Three factors may contribute to this situation: (a) the available measurement instruments are imprecise and/or expensive; (b) the clinical impact of recording these parameters is less important than suggested from the theoretical perspective; and (c) the professionals are overconfident in relation to their own capacity.</p><p id="par0015" class="elsevierStylePara elsevierViewall">Measuring body weight and height in a bedridden patient in the ICU represents an additional work burden and is difficult to carry out. In fact, measuring the height of a bedridden patient intrinsically implies measurement error, while estimating these parameters from measures or formulas is imprecise.<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">4</span></a> Regardless of the method involved, the alternative to measuring weight and height is to estimate the parameters subjectively, question the patient and/or relatives, or use different inferential techniques. The use of formulas for estimating body height from the length and width of the hand, or the length of the leg or foot, is no better than using a flexible metric tape with the patient lying face up in the horizontal position.<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">5</span></a> Bed scales in turn are expensive, their precision is subject to debate, and they do not appear to offer more advantages than the measurement of water balance.<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">6</span></a> Routine practice often consists of questioning the patient and relatives about usual weight and height, and this has also been shown to be reliable.<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">7</span></a></p><p id="par0020" class="elsevierStylePara elsevierViewall">Although there is evidence of the important risk posed by estimating rather than measuring body weight and height when administering drugs with a narrow therapeutic window or margin, alternatives are available, such as the determination of plasma drug levels or evaluation of the effects of treatment, in the case of anticoagulants. There are no specific recommendations referred to the use of ideal weight for mechanical ventilation, though some analyses of the ARDSNet study reveal an important lack of precision in calculating tidal volume when using body height to determine ideal weight.<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">8</span></a> With regard to the recommendations of the scientific societies dedicated to patient nutrition, all of them–including the SEMICYUC–advise body weight and height obtained by questioning the patient and/or relatives. If this is not possible, subjective calculation is recommended.<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">9</span></a></p><p id="par0025" class="elsevierStylePara elsevierViewall">Lastly, mention must be made of the overconfidence shown by the professionals in the survey. Clinicians are often overconfident in the clinical data obtained at the patient bedside–a practice than can give rise to scantly reliable estimations. Among the many data reflected on a nursing sheet or in an electronic registry, we tend to take information such as patient gender, weight and height as being valid. However, such excess confidence may also at least partly reflect certainty that simply estimating patient weight and height suffices in routine clinical practice. The theoretical rigor that could be demanded is not endorsed in the scientific literature by clear evidence of the potential adverse effects for patients of using estimations or subjective calculations of these parameters. Moreover, a review of the literature yields no large longitudinal studies supporting the purported risk of only estimating body weight and height in critical patients in the ICU. In my opinion, the weight and height of patients admitted to the ICU should be recorded by questioning the patients or their relatives, from the time of admission. The weight gain associated to positive balances and drug dose adjustments can be made by assessing the effect of the drug (e.g., catecholamines), or from pharmacokinetic data. Until large longitudinal studies become available in this field, the acquisition of bed scales or the use of often complicated calculation formulas cannot be expected to offer relevant clinical improvements.</p></span>" "pdfFichero" => "main.pdf" "tienePdf" => true "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as: Grau Carmona T. ¿Cuánto peso hoy doctor? Exceso de celo o exceso de confianza. Med Intensiva. 2018;42:327–328.</p>" ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0015" "bibliografiaReferencia" => array:9 [ 0 => array:3 [ "identificador" => "bib0050" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Calidad de la medición antropométrica en las Unidades de Medicina Intensiva españolas (Estudio CAMIES)" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:5 [ 0 => "M.A. García-Martínez" 1 => "T. Cherednichenko" 2 => "A.I. Catalá Espinosa" 3 => "A. Arrascaeta Llanes" 4 => "A. 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| Year/Month | Html | Total | |
|---|---|---|---|
| 2024 November | 7 | 8 | 15 |
| 2024 October | 38 | 44 | 82 |
| 2024 September | 39 | 30 | 69 |
| 2024 August | 36 | 46 | 82 |
| 2024 July | 38 | 30 | 68 |
| 2024 June | 45 | 52 | 97 |
| 2024 May | 41 | 24 | 65 |
| 2024 April | 44 | 38 | 82 |
| 2024 March | 44 | 32 | 76 |
| 2024 February | 29 | 36 | 65 |
| 2024 January | 30 | 30 | 60 |
| 2023 December | 37 | 39 | 76 |
| 2023 November | 41 | 35 | 76 |
| 2023 October | 27 | 28 | 55 |
| 2023 September | 34 | 37 | 71 |
| 2023 August | 23 | 16 | 39 |
| 2023 July | 35 | 35 | 70 |
| 2023 June | 33 | 21 | 54 |
| 2023 May | 43 | 47 | 90 |
| 2023 April | 31 | 23 | 54 |
| 2023 March | 91 | 41 | 132 |
| 2023 February | 63 | 42 | 105 |
| 2023 January | 25 | 18 | 43 |
| 2022 December | 65 | 43 | 108 |
| 2022 November | 51 | 44 | 95 |
| 2022 October | 61 | 27 | 88 |
| 2022 September | 62 | 42 | 104 |
| 2022 August | 73 | 52 | 125 |
| 2022 July | 60 | 38 | 98 |
| 2022 June | 39 | 28 | 67 |
| 2022 May | 63 | 52 | 115 |
| 2022 April | 35 | 43 | 78 |
| 2022 March | 63 | 58 | 121 |
| 2022 February | 33 | 37 | 70 |
| 2022 January | 48 | 41 | 89 |
| 2021 December | 47 | 49 | 96 |
| 2021 November | 37 | 38 | 75 |
| 2021 October | 46 | 82 | 128 |
| 2021 September | 33 | 37 | 70 |
| 2021 August | 25 | 46 | 71 |
| 2021 July | 26 | 25 | 51 |
| 2021 June | 37 | 23 | 60 |
| 2021 May | 37 | 42 | 79 |
| 2021 April | 78 | 98 | 176 |
| 2021 March | 62 | 24 | 86 |
| 2021 February | 58 | 25 | 83 |
| 2021 January | 55 | 31 | 86 |
| 2020 December | 47 | 15 | 62 |
| 2020 November | 23 | 17 | 40 |
| 2020 October | 34 | 25 | 59 |
| 2020 September | 46 | 25 | 71 |
| 2020 August | 18 | 16 | 34 |
| 2020 July | 31 | 20 | 51 |
| 2020 June | 41 | 25 | 66 |
| 2020 May | 8 | 5 | 13 |
| 2020 April | 17 | 17 | 34 |
| 2020 March | 20 | 15 | 35 |
| 2020 February | 33 | 31 | 64 |
| 2020 January | 26 | 28 | 54 |
| 2019 December | 16 | 14 | 30 |
| 2019 November | 26 | 24 | 50 |
| 2019 October | 21 | 14 | 35 |
| 2019 September | 25 | 19 | 44 |
| 2019 August | 17 | 15 | 32 |
| 2019 July | 30 | 19 | 49 |
| 2019 June | 10 | 6 | 16 |
| 2019 May | 34 | 28 | 62 |
| 2019 April | 25 | 5 | 30 |
| 2019 March | 13 | 14 | 27 |
| 2019 February | 24 | 29 | 53 |
| 2019 January | 18 | 23 | 41 |
| 2018 December | 49 | 34 | 83 |
| 2018 November | 19 | 16 | 35 |
| 2018 September | 1 | 0 | 1 |
| 2018 July | 0 | 1 | 1 |
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