Accuracy of clinical examination findings in the diagnosis of COPD.

OBJECTIVE: Simple diagnostic methods can facilitate the diagnosis of COPD, which is a major public health problem. The objective of this study was to investigate the accuracy of clinical variables in the diagnosis of COPD. METHODS: Patients with COPD and control subjects were prospectively evaluated by two investigators regarding nine clinical variables. The likelihood ratio for the diagnosis of COPD was determined using a logistic regression model. RESULTS: The study comprised 98 patients with COPD (mean age, 62.3+/- 12.3 years; mean FEV1, 48.3 +/- 21.6%) and 102 controls. The likelihood ratios (95% CIs) for the diagnosis of COPD were as follows: 4.75 (2.29-9.82; p < 0.0001) for accessory muscle recruitment; 5.05 (2.72-9.39; p < 0.0001) for pursed-lip breathing; 2.58 (1.45-4.57; p < 0.001) for barrel chest; 3.65 (2.01-6.62; p < 0.0001) for decreased chest expansion; 7.17 (3.75-13.73; p < 0.0001) for reduced breath sounds; 2.17 (1.01-4.67; p < 0.05) for a thoracic index > or = 0.9; 2.36 (1.22-4.58; p < 0.05) for laryngeal height < or = 5.5 cm; 3.44 (1.92-6.16; p < 0.0001) for forced expiratory time > or = 4 s; and 4.78 (2.13-10.70; p < 0.0001) for lower liver edge > or = 4 cm from lower costal edge. Inter-rater reliability for those same variables was, respectively, 0.57, 0.45, 0.62, 0.32, 0.53, 0.32, 0.59, 0.52 and 0.44 (p < 0.0001 for all). CONCLUSIONS: Various clinical examination findings could be used as diagnostic tests for COPD.

Acurácia do exame clínico no diagnóstico da DPOC / Accuracy of clinical examination findings in the diagnosis of COPD

Objetivo: A DPOC é um problema de saúde pública, e métodos diagnósticos simples podem ser úteis para facilitar o diagnóstico desta doença. O objetivo deste estudo foi avaliar a acurácia de variáveis clínicas para o diagnóstico de DPOC. Métodos: Pacientes com DPOC e controles foram prospectivamente avaliados por dois examinadores quanto a nove variáveis clínicas. A razão de verossimilhança para o diagnóstico de DPOC foi determinada utilizando-se o modelo de regressão logística. Resultados: Foram incluídos 98 pacientes com DPOC (idade média, 62,3 ± 12,3 anos; VEF1 médio, 48,3 ± 21,6%) e 102 controles. A razão de verossimilhança e IC95% para o diagnóstico de DPOC foram: 4,75 (2,29-9,82; p < 0,0001) para uso da musculatura acessória; 5,05 (2,72-9,39; p < 0,0001) para respiração com os lábios semicerrados; 2,58 (1,45-4,57; p < 0,001) para tórax em barril; 3,65 (2,01-6,62; p < 0,0001) para redução da expansibilidade torácica; 7,17 (3,75-13,73; p < 0,0001) para redução do murmúrio vesicular; 2,17 (1,01‑4,67; p < 0,05) para índice torácico ≥ 0,9; 2,36 (1,22-4,58; p < 0,05) para comprimento laríngeo ≤ 5,5 cm; 3,44 (1,92‑6,16; p < 0,0001) para tempo expiratório forçado ≥ 4 s; e 4,78 (2,13-10,70; p < 0.0001) para limite inferior do fígado ≥ 4 cm abaixo do rebordo costal. A concordância entre observadores para as mesmas variáveis foi, respectivamente, 0,57, 0,45, 0,62, 0,32, 0,53, 0,32, 0,59, 0,52 e 0,44 (p < 0,0001 para todas). Conclusões: Vários achados do exame clínico podem ser utilizados como testes diagnósticos para DPOC.

Objective: Simple diagnostic methods can facilitate the diagnosis of COPD, which is a major public health problem. The objective of this study was to investigate the accuracy of clinical variables in the diagnosis of COPD. Methods: Patients with COPD and control subjects were prospectively evaluated by two investigators regarding nine clinical variables. The likelihood ratio for the diagnosis of COPD was determined using a logisticregression model. Results: The study comprised 98 patients with COPD (mean age, 62.3± 12.3 years; mean FEV1, 48.3 ± 21.6%) and 102 controls. The likelihood ratios (95% CIs) for the diagnosis of COPD were as follows: 4.75 (2.29-9.82; p < 0.0001) for accessory muscle recruitment; 5.05 (2.72-9.39; p < 0.0001) for pursed-lipbreathing; 2.58 (1.45‑4.57; p < 0.001) for barrel chest; 3.65 (2.01-6.62; p < 0.0001) for decreased chest expansion;7.17 (3.75-13.73; p < 0.0001) for reduced breath sounds; 2.17 (1.01- .67; p < 0.05) for a thoracic index ≥ 0.9; 2.36 (1.22-4.58; p < 0.05) for laryngeal height ≤ 5.5 cm; 3.44 (1.92-6.16; p < 0.0001) for forced expiratory time ≥ 4 s; and 4.78 (2.13-10.70; p < 0.0001) for lower liver edge ≥ 4 cm from lower costal edge. Inter-rater reliability for those same variables was, respectively, 0.57, 0.45, 0.62, 0.32, 0.53, 0.32, 0.59, 0.52 and 0.44 (p < 0.0001 for all). Conclusions: Various clinical examination findings could be used as diagnostic tests for COPD.

Sputum examination in the clinical management of community-acquired pneumonia.

OBJECTIVE: To evaluate the frequency of the use of sputum examination in the clinical management of community-acquired pneumonia (CAP) in a general hospital and to determine whether its use has an impact on mortality. METHODS: The medical records of CAP patients treated as inpatients between May and November of 2004 at the Nossa Senhora da Conceição Hospital, located in Porto Alegre, Brazil, were reviewed regarding the following aspects: age; gender; severity of pneumonia (Fine score); presence of sputum; sputum bacteriology; treatment history; change in treatment; and mortality. RESULTS: A total of 274 CAP patients (134 males and 140 females) were evaluated. Using the Fine score to quantify severity, we classified 79 (28.8%) of those 274 patients as class II, 45 (16.4%) as class III, 97 (35.4%) as class IV, and 53 (19.3%) as class V. Sputum examination was carried out in 92 patients (33.6%). A valid sample was obtained in 37 cases (13.5%), and an etiological diagnosis was obtained in 26 (9.5%), resulting in a change of treatment in only 9 cases (3.3%). Overall mortality was 18.6%. Advanced age (above 65), CAP severity, and dry cough were associated with an increase in the mortality rate. Sputum examination did not alter any clinical outcome or have any influence on mortality. CONCLUSION: Sputum examination was used in a minority of patients and was not associated with any noticeable benefit in the clinical management of patients with CAP treated in a hospital setting.

Exame do escarro no manejo clínico dos pacientes com pneumonia adquirida na comunidade / Sputum examination in the clinical management of community-acquired pneumonia

OBJETIVO: Este estudo retrospectivo avaliou a freqüência do uso da bacteriologia do escarro no manejo clínico de pacientes com pneumonia adquirida na comunidade (PAC) em um hospital geral, e se a utilização deste método modificou a mortalidade. MÉTODOS: Os prontuários de pacientes internados no Hospital Nossa Senhora da Conceição, em Porto Alegre (RS) Brasil, para tratamento de PAC entre maio e novembro de 2004 foram revisados quanto aos seguintes aspectos: idade; sexo; gravidade da pneumonia (escore de Fine); presença de expectoração; bacteriologia do escarro; história de tratamento; resposta clínica; troca de tratamento; e mortalidade. RESULTADOS: Foram avaliados 274 pacientes com PAC, sendo 134 do sexo masculino. Dentre os 274 pacientes, 79 (28,8 por cento) apresentavam, de acordo com o escore de Fine, classe II; 45 (16,4 por cento), classe III; 97 (35,4 por cento), classe IV; e 53 (19,3 por cento), classe V. Em 92 pacientes (33,6 por cento), uma amostra de escarro foi colhida para exame bacteriológico. Obtivemos amostra válida em 37 casos (13,5 por cento) e diagnóstico etiológico em 26 (9,5 por cento), o que resultou em modificação do tratamento em apenas 9 casos (3,3 por cento). A mortalidade geral foi 18,6 por cento. Idade acima de 65 anos, a gravidade da PAC e a ausência de escarro associaram-se à maior mortalidade. A bacteriologia do escarro não influenciou o desfecho clínico, nem a taxa de mortalidade. CONCLUSÃO: O exame do escarro foi uma ferramenta diagnóstica utilizada na minoria dos pacientes, e não trouxe benefício detectável no manejo clínico dos pacientes com PAC tratados em ambiente hospitalar.

OBJECTIVE: To evaluate the frequency of the use of sputum examination in the clinical management of community-acquired pneumonia (CAP) in a general hospital and to determine whether its use has an impact on mortality. METHODS: The medical records of CAP patients treated as inpatients between May and November of 2004 at the Nossa Senhora da Conceição Hospital, located in Porto Alegre, Brazil, were reviewed regarding the following aspects: age; gender; severity of pneumonia (Fine score); presence of sputum; sputum bacteriology; treatment history; change in treatment; and mortality. RESULTS: A total of 274 CAP patients (134 males and 140 females) were evaluated. Using the Fine score to quantify severity, we classified 79 (28.8 percent) of those 274 patients as class II, 45 (16.4 percent) as class III, 97 (35.4 percent) as class IV, and 53 (19.3 percent) as class V. Sputum examination was carried out in 92 patients (33.6 percent). A valid sample was obtained in 37 cases (13.5 percent), and an etiological diagnosis was obtained in 26 (9.5 percent), resulting in a change of treatment in only 9 cases (3.3 percent). Overall mortality was 18.6 percent. Advanced age (above 65), CAP severity, and dry cough were associated with an increase in the mortality rate. Sputum examination did not alter any clinical outcome or have any influence on mortality. CONCLUSION: Sputum examination was used in a minority of patients and was not associated with any noticeable benefit in the clinical management of patients with CAP treated in a hospital setting.