C-REACTIVE PROTEIN LEVELS IN OBSTRUCTIVE SLEEP APNEA PATIENTS

Amaç: Obstrüktif Uyku Apne Sendromu (OUAS)'u olan hastalarda C-Reaktif Protein (CRP)'in erken ateroskleozun saptanmasında kullanılması. Yöntemler: Çalışmaya Dokuz Eylül Üniversitesi Tıp Fakültesi uyku bozukluğu polikliniğine başvuran, yaşları 20-66 arasında olan toplam 45 obez hasta alındı. Hastaların cinsiyet, yaş, boy, kilo değerleri saptandı. Vücut kitle indeksleri, bel / kalça oranları hesaplandı. Polisomnografi tetkiki yapıldı. OUAS'u olan hasta grubu ve OUAS'u olmayan kontrol grubu olarak iki gruba ayrıldı. Her iki grup hastadan açlık venöz kan örneği alınarak yüksek duyarlılıklı CRP düzeyleri ve lipid profilleri çalışıldı. B-mode dopler ultrasonografiyle karotis intima madia kalınlıkları ölçüldü. Bulgular: Kontrol grubunda yd-CRP düzeyleri 0,22 (0,01-0,57) mg/dl, OUAS'lı hasta grubundaysa 0,30 (0,05-1,52) mg/dl olarak bulundu, iki grup arasında istatiksel olarak anlamlı fark saptanmadı (p=0,300). Karotis İntima Media Kalınlığı (KİMK) ölçümleri değerlendirildiğinde her iki grup arasında istatistiksel olarak anlamlı fark saptandı (p=0,01). Bel / kalça oranları belirlenip, abdominal obezite açısından değerlendirildiğinde iki grup arasında istatistiksel olarak anlamlı fark gözlendi (p<0,01). AKŞ, TK ve LDL-K düzeylerinde de anlamlı fark saptandı (p=0,049, p=0,01 ve p=0,03). Sonuç: OUAS'lı hastalarda abdominal obezite, AKŞ, TK ve LDL-K düzeylerinde istatistiksel olarak anlamlı fark saptanması OUAS metabolik sendrom ilişkisi için varolan kanıtları doğruladı. Bununla birlikte, ölçülen CRP düzeylerinin OUAS'u hastalarında erken aterosklerozun gösterilmesinde iyi bir gösterge olmayabileceği belirlendi. Objective: To determine whether CRP can detect subclinic atherosclerosis in obstructive sleep apnea patients. Methods: Ages between 20-66, 45 obese patient who was have application to D.E.Ü. Medical Faculty sleep laboratory recruited to study. We determine sex, age, height and weight for all patients and calculate body mass index, waist / hip raito. Polisomnographia was done. Patient's divided in to two group's, whose PSG detected OSA constitute patients group and whose PSG not detected OSA constitude control group. We obtained fasting venous blood sample and measure HSCRP and lipid profiles. Carotis intima media thickness measured with B-mode doppler ultrasonography. Results: HSCRP found 0,22 (0,01-0,57) mg/dl in control group and 0,30 (0,05-1,52) mg/dl in OSA patients group, we didn't detect statistical significancy (p=0,300). When Carotid İntima Media Thickness (CIMT) measurements evaluated for each group, statistical significancy find (p=0,01). WHR determined and evaluated for abdominal obesity, statistical significancy found between two group (p<0,01). Also significant differece detected for FBG, TK and LDL-K (p=0,049, p=0,01 and p=0,03). Conclusion: Detected significant difference for abdominal obesity, FBG, TK and LDL-K levels in OSA patients confirmed existing evidence of relation eith sleep apnea and metabolic syndrome. Although we determined, measured HSCRP levels may not be a good marker for presenting subclinic atherosclerosis in OSA patients

Examining the generalizability of research findings from archival data

This initiative examined systematically the extent to which a large set of archival research findings generalizes across contexts. We repeated the key analyses for 29 original strategic management effects in the same context (direct reproduction) as well as in 52 novel time periods and geographies; 45% of the reproductions returned results matching the original reports together with 55% of tests in different spans of years and 40% of tests in novel geographies. Some original findings were associated with multiple new tests. Reproducibility was the best predictor of generalizability—for the findings that proved directly reproducible, 84% emerged in other available time periods and 57% emerged in other geographies. Overall, only limited empirical evidence emerged for context sensitivity. In a forecasting survey, independent scientists were able to anticipate which effects would find support in tests in new samples

Examining the generalizability of research findings from archival data

This initiative examined systematically the extent to which a large set of archival research findings generalizes across contexts. We repeated the key analyses for 29 original strategic management effects in the same context (direct reproduction) as well as in 52 novel time periods and geographies; 45% of the reproductions returned results matching the original reports together with 55% of tests in different spans of years and 40% of tests in novel geographies. Some original findings were associated with multiple new tests. Reproducibility was the best predictor of generalizability-for the findings that proved directly reproducible, 84% emerged in other available time periods and 57% emerged in other geographies. Overall, only limited empirical evidence emerged for context sensitivity. In a forecasting survey, independent scientists were able to anticipate which effects would find support in tests in new samples