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  • Küçük Resim
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    Correlation of pulse oximetry oxygen saturation with blood gas arterial oxygen saturation in patients with heart failure reduced ejection fraction: Prospective cohort study
    (2020) Gok, Gulay; Cinar, Tufan; Nurkalem, Zekeriya; Duman, Dursun
    Aim: An estimation of accurate oxygen saturation is a critical in the management of patients with heart failure (HF). However, obtaining peripheral arterial blood samples may be technically difficult in some cases. The purpose of this study was to evaluate the correlation of pulse oximetry SO2 with arterial SO2 in patients with HF reduced ejection fraction (HFrEF). Material and Methods: In total, 29 consecutive patients who were admitted to cardiology clinics with HFrEF were prospectively enrolled in this study. We enrolled all patients if the chief physician ordered an atrial blood gas analysis. Simultaneous atrial blood gas sample and pulse oximetry measurements were collected and compared. The strength of association between atrial blood gas and pulse oximetry measurements was determined by Pearson correlation and Bland and Altman analysis.Results: We evaluated 29 heart failure patients (the mean age was; 70.7±10.9, 44.8 % of patients were male) with a mean EF of 29.6 ± 5.5. We observed that the mean pulse oximetry SO2 and arterial SO2 in the study were 92.8 ± 4.4 and 93 ± 5.2, respectively. We found significantly positive linear correlation between two methods according to Pearson analysis (r = 0.683, p 0.001). A low bias was found between two methods according to Bland and Altman method (-0.2296, p = 0.23).Conclusion: The present data may suggest that pulse oximetry oxygen saturation is an acceptable substitute for the arterial oxygen saturation in patients with HFrEF.
  • Küçük Resim Yok
    Öğe
    Demographics of patients with heart failure who were over 80 years old and were admitted to the cardiology clinics in Turkey
    (Kare Publ, 2019) Gok, Gulay; Zoghi, Mehdi; Sinan, Umit Yasar; Kilic, Salih; Tokgozoglu, Lale; Sumerkan, Mutlu Cagan; Emren, Volkan
    Objective: Heart failure (HF) has a high prevalence and mortality rate in elderly patients; however, there are few studies that have focused on patients older than 80 years. The aim of this study is to describe and compare the age-specific demographics and clinical features of Turkish elderly patients with HF who were admitted to cardiology clinics. Methods: The Epidemiology of Cardiovascular Disease in Elderly Turkish population (ELDER-TURK) study was conducted in 73 centers in Turkey, and it recruited a total of 5694 patients aged 65 years or older. In this study, the clinical profile of the patients who were aged 80 years or older and those between 65 and 79 years with HF were described and compared based on the ejection fraction (EF)-related classification: HFrEF and HFpEF (is considered as EF: >= 50%). Results: A total of 1098 patients (male, 47.5%; mean age, 83.5 +/- 3.1 years) aged 80 years and 4596 patients (male, 50.2 %; mean age, 71.1 +/- 4.31 years) aged 65-79 years were enrolled in this study. The prevalence of HF was 39.8% for patients who were >= 80 years and 27.1% for patients 65-79 years old. For patients aged >= 80 years with HF, the prevalence rate was 67% for hypertension (HT), 25.6% for diabetes mellitus (DM), 54.3% for coronary artery disease (CAD), and 42.3% for atrial fibrilation. Female proportion was lower in the HFrEF group (p=0.019). The prevalence of HT and DM was higher in the HFpEF group (p<0.01), whereas CAD had a higher prevalence in the HFrEF group (p=0.02). Among patients aged 65-79 years, 43.9% (548) had HFpEF, and 56.1% (700) had HFrEF. In this group of patients aged 65-79 years with HFrEF, the prevalence of DM was significantly higher than in patients aged >= 80 years with HFrEF (p<0.01). Conclusion: HF is common in elderly Turkish population, and its frequency increases significantly with age. Females, diabetics, and hypertensives are more likely to have HFpEF, whereas CAD patients are more likely to have HFrEF.