The accuracy of the estimation of body weight and height in the intensive care unit

Leary, T. S.; Milner, Q. J. W.; Niblett, David

doi:10.1097/00003643-200011000-00008

Cited by 54 publications

(22 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In a survey of 20 ICUs in the United Kingdom, 15 measured patients with tape, and 5 estimated heights. 13 Our results show that visual estimation and the tape measure method while subjects are supine are not accurate, with maximum errors being ϳ20 cm. These errors were associated with large errors in V T settings.…”

Section: Discussionmentioning

confidence: 72%

“…Despite the paucity of data, several studies suggest that height is not being used to set the V T 11,14 or that height is unknown because as many as 40% of ARDS patients had no height listed in their medical records, 29 and consequently, visual estimation of height or weight is frequently being used. 13,14,30 In surgical units, patients are frequently measured preoperatively. In a recent study, heights measured before surgery were available for 3,763 patients and were missing for only 6 patients (0.16%).…”

Section: Discussionmentioning

confidence: 99%

“…8,12 Visual estimation of the patient's height is frequently used in mechanically ventilated patients. 13,14 However, visual estimation of height and, even more so, of PBW can be inaccurate. [15][16][17][18] In addition, despite strong evidence and recommendations, protective mechanical ventilation is not optimally implemented [19][20][21][22][23] ; unavailability of the height may be an additional barrier.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of Usual and Alternative Methods to Measure Height in Mechanically Ventilated Patients: Potential Impact on Protective Ventilation

et al. 2013

View full text Add to dashboard Cite

BACKGROUND: Protective ventilation implementation requires the calculation of predicted body weight (PBW), determined by a formula based on gender and height. Consequently, height inaccuracy may be a limiting factor to correctly set tidal volumes. The objective of this study was to evaluate the accuracy of different methods in measuring heights in mechanically ventilated patients. METHODS: Before cardiac surgery, actual height was measured with a height gauge while subjects were standing upright (reference method); the height was also estimated by alternative methods based on lower leg and forearm measurements. After cardiac surgery, upon ICU admission, a subject's height was visually estimated by a clinician and then measured with a tape measure while the subject was supine and undergoing mechanical ventilation. RESULTS: One hundred subjects (75 men, 25 women) were prospectively included. Mean PBW was 61.0 ؎ 9.7 kg, and mean actual weight was 30.3% higher. In comparison with the reference method, estimating the height visually and using the tape measure were less accurate than both lower leg and forearm measurements. Errors above 10% in calculating the PBW were present in 25 and 40 subjects when the tape measure or visual estimation of height was used in the formula, respectively. With lower leg and forearm measurements, 15 subjects had errors above 10% (P < .001). CONCLUSIONS: Our results demonstrate that significant variability exists between the different methods used to measure height in bedridden patients on mechanical ventilation. Alternative methods based on lower leg and forearm measurements are potentially interesting solutions to facilitate the accurate application of protective ventilation.

show abstract

Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Usual and Alternative Methods to Measure Height in Mechanically Ventilated Patients: Potential Impact on Protective Ventilation

et al. 2013

View full text Add to dashboard Cite

show abstract

“…25 Nessas situações, pode-se realizar a avaliação antropométrica pelo uso de medidas estimadas, já que problemas com mobilidade não afetam esse método para coleta das medidas, reduzindo, assim, a incidência de erros. 26 Leary et al 27 encontraram diferenças significativas entre massa corporal e a estatura, mensuradas e preditas. Nesse caso, a amostra foi composta por 30 idosos de ambos os sexos.…”

Section: Discussionunclassified

Avaliação antropométrica em idosos: estimativas de peso e altura e concordância entre classificações de IMC

Souza

Fraga

Gottschall

et al. 2013

Rev. bras. geriatr. gerontol.

View full text Add to dashboard Cite

ResumoObjetivo: Avaliar a concordância entre diferentes classificações de Índice de Massa Corporal (IMC) e verificar modelos de fórmulas propostas para estimativa de peso e altura que podem ser aplicadas na população idosa do Sul do Brasil. Método: Estudo transversal que avaliou 131 idosos residentes de três instituições de longa permanência para idosos (ILPIs) no Sul do Brasil, por meio de uma avaliação antropométrica, utilizando peso, estatura, altura do joelho, dobra cutânea subescapular, circunferência da panturrilha, circunferência do braço, circunferência abdominal e hemienvergadura. Resultados: A idade média da amostra foi de 78,9 anos, sendo 41,2% homens e 58,8% mulheres. De acordo com a classificação da Organização Mundial da Saúde (OMS), apenas dois idosos (1,5%) apresentaram baixo-peso, 63 idosos (48,1%) foram classificados como eutróficos e 66 (50,4%) foram classificados com sobrepeso, obesidade grau I e II. Já os pontos de corte estipulados por Lipschitz determinaram que 21 idosos (16%) se encontram com baixo-peso, 69 (52,7%) eutróficos e 41 (31,3%) com sobrepeso. Ao comparar as medidas de peso e altura aferidas com as mesmas medidas estimadas, percebe-se que a única que não mostrou diferença significativa foi a fórmula de estimativa de altura de Rabito. Conclusão: Os pontos de corte utilizados apresentaram moderada concordância, sendo que Lipschitz salienta uma maior faixa de risco para desnutrição. Comparando as medidas de peso e altura aferidas com as medidas estimadas, foi observado que somente a fórmula de estimativa de altura de Rabito pode ser aplicada para esta população. AbstractObjective: Assessing the concordance between different classifications of body mass index (BMI) and verify if the formulas to estimate weight and height, that can be applied to the elderly population in Southern Brazil. Method: Cross-sectional analysis was applied to 131 elders from three long-stay institutions in Southern Brazil. They were Palavras-chave: Idoso. Índice de Massa Corporal. Instituição de Longa Permanência para Idosos. Antropometria.

show abstract

“…However, this may not be possible in confused, unconscious or sedated patients, such as those in the intensive care units, and estimates by experienced staff in such units (Leary et al, 2000) are variable and unsatisfactory. Lying height may also be measured, but it is not often undertaken because it can be time consuming, the observers may need substantial training to achieve accurate and reproducible results, and certain patients may experience pain or discomfort when moved into the correct measurement position.…”

Section: Introductionmentioning

confidence: 99%

Ulna length to predict height in English and Portuguese patient populations

et al. 2011

View full text Add to dashboard Cite

Background/Objective: This study assessed the extent to which ulna length could be used to predict height and body mass index (BMI) in various groups of English and Portuguese hospitalised patients, and tidal volumes in critically ill patients at risk of requiring ventilatory support. Subjects/Methods: Bedside measurements of weight, height and ulna length were made in 507 patients (432 English, 75 Portuguese; 264 men, 243 women) with a mean age of 61.8 ± 18.9 years, height 165.1 ± 9.5 cm and BMI 26.7 ± 5.43 kg/m 2 . Results: Ulna length could be measured with ease in all subjects. The intra-observer technical error of measurement in the same subjects was 1%. Within each category of men and women aged o65 years and 65 years and over, there was no significant difference between the English and Portuguese in the intercept or regression coefficients for the ulna-height relationships. A strong relationship was found between predicted and measured height (r ¼ 0.963, standard error of the estimate 4.6 cm). The overall mean and s.d. of the difference was 0.3±2.7% of height, with no significant difference between English and Portuguese populations. The discrepancy between measured and predicted BMI corresponded to 0.7 ± 5.5% (s.d.) (all subjects) and for ventilatory volumes predicted from height (critically ill subjects only) 0.7±7.1%. Conclusion: Height can be predicted from ulna length with precision and ease in a wide range of patient groups, and without the need to use different equations in English and Portuguese populations. The predicted measurements are acceptable in most clinical circumstances.

show abstract

The accuracy of the estimation of body weight and height in the intensive care unit

Cited by 54 publications

References 9 publications

Comparison of Usual and Alternative Methods to Measure Height in Mechanically Ventilated Patients: Potential Impact on Protective Ventilation

Comparison of Usual and Alternative Methods to Measure Height in Mechanically Ventilated Patients: Potential Impact on Protective Ventilation

Avaliação antropométrica em idosos: estimativas de peso e altura e concordância entre classificações de IMC

Ulna length to predict height in English and Portuguese patient populations

Contact Info

Product

Resources

About