Hakan Günen

Factors affecting survival of hospitalised patients with COPD

Factors determining in-hospital mortality and long-term survival of patients hospitalised with acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are not precisely understood. The aim of the present study was to assess the parameters related to in-hospital mortality and long-term survival after hospitalisation of patients with AECOPD. Clinical and epidemiological parameters on admission in 205 consecutive patients hospitalised with AECOPD were prospectively assessed. Patients were followed-up for 3 yrs. Factors determining short- and long-term mortality were analysed. In total, 17 patients (8.3%) died in hospital. In-hospital mortality was significantly associated with lower arterial oxygen tension (Pa,O2), higher carbon dioxide arterial tension, lower arterial oxygen saturation and longer hospital stay. The overall 6-month mortality rate was 24%, with 1-, 2- and 3-yr mortality rates of 33%, 39% and 49%, respectively. Cox regression analysis revealed that long-term mortality was associated with longer disease duration (relative risk (RR) = 1.158), lower albumin (RR = 0.411), lower Pa,O2 (RR = 0.871) and lower body mass index (RR = 0.830). When the model was run for the time elapsed since first hospitalisation, it also appeared as statistically significant (RR = 1.195). These findings show that patients hospitalised with acute exacerbations of chronic obstructive pulmonary disease have poor short- and long-term survival. Prediction of survival status may be enhanced by considering arterial oxygen tension, albumin, body mass index, disease duration and time elapsed since the first hospitalisation.

The role of nebulised budesonide in the treatment of exacerbations of COPD

The present study was designed to evaluate the hypothesis that nebulised budesonide (NB) might be an alternative to systemic corticosteroids (SC) in the treatment of patients with exacerbations of chronic obstructive pulmonary disease (ECOPD). Patients hospitalised with ECOPD (n = 159) were randomised into three groups. Group 1 received only standard bronchodilator treatment (SBDT), group 2 received SC (40 mg prednisolone) plus SBDT, and group 3 received NB (1,500 μg q.i.d.) plus SBDT. Improvement during 10-day hospitalisation was compared with exacerbation and rehospitalisation rates after discharge. While mean±sd age was 64.1±8.9 yrs (female/male = 0.1), mean forced expiratory volume in one second (FEV1) at admission was found to be 37.2±12.2% predicted. Arterial blood gases and spirograms recovered faster in groups 2 and 3. While improvements in arterial oxygen tension (Pa,O2) and forced vital capacity (FVC) in group 2, and improvements in Pa,O2, FVC and FEV1 in group 3, became significant at 24-h control, the first significant improvement in group 1 appeared in arterial oxygen saturation at 72-h control. The mean improvement of Pa,O2 after 10 days was 1.20 and 1.06 kPa (9 and 8 mmHg) higher in group 2 and 3, respectively, than in group 1. Blood glucose exhibited an upward trend only in group 2. The study demonstrates that nebulised budesonide may be an effective and safe alternative to systemic corticosteroids in the treatment of exacerbations of chronic obstructive pulmonary disease.

CPAP compliance in patients with obstructive sleep apnea syndrome

Obstructive sleep apnea syndrome (OSAS) is characterized by repeated cessations of breathing during sleep. Major symptoms of this disease are excessive daytime sleepiness, snoring, and witnessed apnea. Most of the patients are treated with CPAP. In this study, we aimed to evaluate the factors affecting adherence to the CPAP treatment. Seventy-one patients were enrolled to this study. Patients were divided into three groups according to CPAP usage. Group I consisted of patients who had never used CPAP, group II consisted of patients who had used CPAP occasionally, and group-III patients had used CPAP treatment regularly. Group-III patients had higher apnea–hypopnea index (AHI) than groups I and II (respectively, 56.6 ± 27.7, 26.3 ± 7.5, and 32.3 ± 7.06; p < 0.000 for both). Oxygen desaturation index was significantly higher in group-III patients comparing to groups I and II (44.6 ± 22.3, 15.9 ± 8.3, and 25.6 ± 9.5; p < 0.000 for all). Our findings have shown that only very severe patients use the CPAP device regularly (mean AHI 56.6 ± 27.7). Compliance to CPAP treatment seemed to be poor in patients with moderate to severe, AHI about 30, OSAS. Considering the well-established benefits of CPAP treatment in patients with true indications, patients should be encouraged to use CPAP regularly, and complications of OSAS should be keynoted.

Venous thromboemboli and exacerbations of COPD

The aim of the present study was to determine the prevalence of and risk factors for venous thromboembolism (VTE) in exacerbations of chronic obstructive pulmonary disease (COPD). COPD patients hospitalised with an exacerbation were included consecutively. Symptoms, signs and clinical, haematological and epidemiological parameters on admission were noted. All patients underwent computed tomographic angiography and ultrasonographic examination for deep vein thrombosis and pulmonary embolism (PE). Wells and Geneva scores were calculated. Patients were followed-up for 1 yr in order to determine mortality. Deep vein thrombosis and PE were detected in 14 and 18 patients, respectively. The prevalence of VTE was three times higher in patients with an exacerbation of unknown origin than in patients with an exacerbation of known origin (p = 0.016). Of patients with VTE, 20 (95%) had high D-dimer levels. The negative predictive value of D-dimer testing was 0.98. Although the moderate- and high-risk categories of both the Wells and Geneva methods covered all PE patients, the Wells method identified 49% less potential patients for PE investigation. Mortality at 1 yr was higher (61.9% versus 31.8%) in VTE patients (p = 0.013). VTE is a common problem in COPD patients hospitalised with an exacerbation, leading to high long-term mortality. D-dimer levels and the Wells criteria can be used to determine whether or not these patients are assessed for a thromboembolic event.

Prevalence of COPD: First epidemiological study of a large region in Turkey

BACKGROUND Although chronic obstructive pulmonary disease (COPD) is one of the leading causes of mortality and morbidity worldwide, epidemiological data on COPD is very limited. This study was designed to obtain some baseline data on COPD in the Malatya region of Turkey. METHODS Sixty clusters from urban and rural regions were randomly selected. Ten and seven consecutive households were included in the study from each urban and rural cluster, respectively. A validated questionnaire on the epidemiology of COPD was completed for each participant over 18 by a pulmonary physician. Each subject underwent standard spirometric measurement and early bronchodilation testing. RESULTS A total of 1160 participants completed the study (93%). Some 6.9% of the participants were found to have COPD (F/M=1/4). While the prevalence of COPD was 18.1% in current smokers over 40 years of age, the prevalence was 4.5% among younger smokers. Some 25.5% of the women and 57.2% of the men were current smokers. Biomass exposure, as a sole reason for COPD, was significantly common among female patients living in rural areas (54.5%). In the development of COPD, the relative risk ratio of cigarette smoke was found to be 3.4 and 3.3 times higher than biomass exposure and occupational exposure, respectively. CONCLUSIONS Smoking rate and COPD prevalence were found to be unexpectedly high in the region, and biomass exposure is still an important cause of COPD, particularly among females living in rural areas. We think that national policies against smoking and biomass exposure should be implemented immediately.

Thoracic Involvement in Behçet's Disease and Its Correlation with Multiple Parameters

Abstract. In Behçets disease (BD), controversy has existed over the incidence of thoracic involvement, which may be a direct threat to the patients life. The aim of this study is to evaluate the incidence of thoracic involvement in BD and its correlation with the number of diagnostic BD criteria of The International Study Group (ISG), gender, disease duration, and the presence of symptoms. Forty-two BD patients, who had consecutively applied to different clinics in Turgut Özal Medical Center Research Hospital, were included in the study. They were either newly diagnosed or already under treatment. All patients were examined by standard chest roentgenogram, spirometry, and thorax CT. Perfusion scintigraphies were obtained in patients with thoracic involvement. Thoracic pathologic conditions were found in five patients (11.9%). All thoracic pathologic conditions appeared in patients with at least four diagnostic criteria (26 patients) of the ISG for BD. In this subgroup, the rate of thoracic involvement was 19.2%. Also, 25% of the patients with pulmonary symptoms (12 patients) had thoracic lesions. Gender and the duration of the disease did not correlate with thoracic involvement. Our findings suggest that the rate of thoracic involvement in BD is greater than is generally believed. An increased number of diagnostic BD criteria of the ISG may indicate other organ system involvement and an increased risk of thoracic pathosis. All BD patients with at least four diagnostic criteria or any pulmonary symptoms should be evaluated for thoracic involvement, which is a major menace to life and necessitates early intervention.

The role of surgery in chest wall tuberculosis

Chest wall tuberculosis is a rare entity and its clinical presentation may resemble a pyogenic abscess or chest wall tumor. The role of surgery in the diagnosis and treatment of chest wall tuberculosis is still controversial. During a 6-year period (1997-2002), six cases with cold abscesses of chest wall were managed in our clinic. Clinical presentation, diagnostic workup, treatment strategies, and results of medical and surgical treatment were retrospectively reviewed. There were four male and two female patients. All but one had a fluctuating and abscess-like chest wall mass. Pleura and mediastinal or chest wall lymph nodes were also involved in three patients. Before the debridement and abscess drainage, the diagnosis was not confirmed in any of our patients except one. All received a four-drug antituberculous regimen for 6-12 months postoperatively and improved clinically and radiologically. Surgical intervention and histological examination are usually necessary for the treatment and to confirm the diagnosis in chest wall tuberculosis. Antituberculous medical treatment and adjunctive surgery are quite effective in this process.

Evaluation of autonomic activity in patients with subclinical hypothyroidism

It has been shown that impaired cardiac autonomic activity is closely related with lethal arhythmias. Heart rate variability (HRV), analysis of beat-to-beat variations, is an important and widely used non-invasive method to assess autonomic function. Impaired cardiac autonomic activity and altered sympathovagal balance were previously documented in patients with hypothyroidism. However, the effect of sub-clinical hypothyroidism (SH) on autonomic function has not been studied yet. We aimed to investigate the effect of SH on sympathovagal balance using the HRV method. The study included 31 patients with SH and 28 healthy volunteer controls. Patients with cardiac, metabolic, neurological disease or any other systemic disease that could affect autonomic activity were excluded from the study. HRV time domain and frequency domain parameters were determined over a period of 24 h. All time and frequency domain measures of HRV in patients with SH were not significantly different compared to those of healthy control group (p>0.05). Additionally, we compared SH subgroups (TSH level ≥10 and TSH level <10mU/l) with each other and the controls. A statistically significant difference was observed only in time domain parameters of SD of normal-to-normal intervals (SDNN) and SD of all 5-min mean normal NN intervals (SDANN) between subgroup with TSH level ≥10 and controls (p<0.05, p<0.05, respectively). In correlation analysis with TSH, there was positive relationship between TSH and the root mean square of successive differences between adjacent R-R intervals (rMSSD). These findings indicate that SH may affect cardiac autonomic activity in correlation with TSH levels.

Assessment of B‐type natriuretic peptide in patients with pneumonia

The mammalian heart synthesises and secretes B‐type natriuretic peptide (BNP), which has potent diuretic, natriuretic and vascular smooth muscle‐relaxing effects as well as complex interactions with the hormonal and nervous systems. Recent studies described that BNP was acute phase reactant. In this study, we aimed to evaluate BNP levels in patients with pneumonia.

Long-term follow-up of chronic obstructive pulmonary disease patients on long-term oxygen treatment

Aims:  Few studies exist on influence of long‐term oxygen treatment (LTOT) on survival of chronic obstructive pulmonary disease (COPD) patients. This study was designed to determine whether LTOT improves survival or not in severely hypoxaemic COPD patients.