Computed Tomography Imaging in Pulmonary Embolism – The Other Side of the Medal

Delay in diagnosis of pulmonary thromboembolism in emergency department: is it still a problem?

BACKGROUND AND AIM

Pulmonary embolism (PE) is a common and serious disease that can result in death unless emergent diagnosis is made and treatment is initiated. In this study, we aimed to identify whether there is still a delay in the diagnosis of PE and to identify the time to delay in diagnosis and factors leading to this delay.

METHODS

This is a prospective observational cohort study performed in an emergency department (ED) of a tertiary care university hospital between September 2008 and September 2010. The rate and cause of delay in diagnosis were analyzed among patients with PE. The "delay" was defined as diagnosing after first 24 hours of symptom onset.

RESULTS

Among the 53 patients who were diagnosed with PE, a delay in diagnosis was present in 49 (93%) of them. Total delay time was 6.8 ± 7.7 days. In 33 (62%) patients, there was a delay of 4.6 ± 6.5 days due to patient-related factors. Delay in diagnosis after admission to hospital was 2.2 ± 2.9 days in 40 (75%) patients. In multivariate regression analysis, being female and having chest pain and cough were identified as significant factors causing patient-related delay. Unilateral leg edema, recent operation, and previous venous thromboembolism (VTE) history were the significant factors causing PE diagnosis without a delay. On the other hand, systemic hypertension as comorbidity was the only factor leading to physician-related delay.

CONCLUSION

The delay in diagnosis of PE in EDs still remains as an important problem. While being female and having chest pain and cough are significantly and independently associated with patient delay in diagnosis, the unilateral leg edema, recent operation, and previous VTE history cause physicians to diagnose on time. On the other hand, having hypertension as comorbidity may lead to physician delay. In order to prevent the delay in diagnosis, hospital-associated factors must be elucidated totally and more interventions must be made to increase public and professional awareness of the disease.

The relationship between socio-demographic characteristics of patients and diagnostic delay in acute pulmonary thromboembolism

BACKGROUND

In pulmonary thromboembolism (PE), delay to diagnosis is very common. In this study, we examined the role of patients and the socio-demographic characteristics in delayed diagnosis of PE.

PATIENTS AND METHODS

We evaluated 156 PE patients for the dates of symptom onset, the dates of first visit to a health institution and diagnosis, signs and symptoms, and the socio-demographic characteristics. Delays were analyzed using the Mann-Whitney U test, and the predictors were analyzed using logistic regression analysis.

RESULTS

Of the patients, 60.3% visited a health institution within the first day of the symptoms. Mean time from symptoms to the first admission to a health institution (patient delay) was 2.04 ± 3.89 days (median 0 day, range 0-30). Current smoking, a high level of education, and co-morbidity were associated with longer patient delays. The time interval from first symptom to the diagnosis (total delay) was 7.93 ± 10.05 (median 4 days, range 0-45) days. While hypotension, syncope, and previous surgery/trauma were significantly associated with a shorter total delay, a previous visit to any health institution was associated with longer total delay.

CONCLUSION

In conclusion, although some socio-demographic characteristics of patients such as smoking, educational status, and co-morbid diseases were found to be associated with delayed visit to any health institution, our results showed that physician or health system delays were more prominent in delayed diagnosis of PE.

Sonographic diagnosis and follow-up of pneumonia: a prospective study

BACKGROUND

Although transthoracic ultrasound offers several important advantages as diagnostic imaging technique in pleural and pulmonary conditions, its significance for the diagnosis and monitoring of pneumonia has yet to be established.

OBJECTIVES

To identify sonographic features associated with pneumonia at admission and during the course of the disease under treatment.

METHODS

Thirty patients (12 females, 18 males; median age 65.5 years) with X-ray-proven pneumonia underwent transthoracic sonography (TS) on day 0, between days 1 and 3, 4 and 7, 8 and 14, 15 and 21, and after day 21. TS was assessed according to: number, location, shape, echogenicity, echotexture, echostructure, breath-depending movement, size of pneumonic lesions, bronchoaerogram, fluid bronchogram, superficial fluid alveologram, necrotic areas, vascularity and incidence of local and/or basal pleural effusion.

RESULTS

Thirty-three pneumonic infiltrates were eligible for analysis in 30 patients. In 57% (17/30), the likely pathogenic microorganism was identified. Pneumonia was recognized as a hypoechoic area of varying size (mean size between 33.7 x 9.38 and 91.2 x 45.3 mm) and shape, with irregular and blurred margins along with a nonhomogeneous echotexture. The most characteristic feature was a positive bronchoaerogram (32/33). Sixty-one percent (20/33) revealed basal and 9% (3/33) local effusion. During follow-up, lesions decreased in size or disappeared (30/33) or decreased in number (4/9). The bronchoaerogram became less pronounced (13/32), basal pleural effusion either diminished (7/20) or dissipated (7/20), as did localized effusion (3/3). In 30 cases, the course of pneumonia was comparable using X-ray and TS.

CONCLUSIONS

TS is a noninvasive technique for the diagnosis and follow-up of patients with pneumonia.