PSPınar Seven

Pınar Seven

*This is an algorithmically generated author record based on publicly available information.

Current Organizations / Institutes

The organizations/institutes from the scholar's latest article


Pınar Seven has a total of 103 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Correction to: A novel oxygenation distension index (ODI): a driving pressure–based metric compared with the oxygenation index in pediatric PARDS

    by Ekin Soydan, Gokhan Ceylan, Ozlem Demirel, Ece Dorsan Yay, Gulhan Atakul, Sevgi Topal, Mustafa Colak, Pinar Hepduman, Ozlem Sarac, Ferhat Sari, et al.

  • A novel oxygenation distension index (ODI): a driving pressure–based metric compared with the oxygenation index in pediatric PARDS

    by Ekin Soydan, Gokhan Ceylan, Ozlem Demirel, Ece Dorsan Yay, Gulhan Atakul, Sevgi Topal, Mustafa Colak, Pinar Hepduman, Ozlem Sarac, Ferhat Sari, et al.

    The oxygenation index (OI) is widely used to assess disease severity in pediatric ARDS; however, it relies on mean airway pressure (Pmean), which does not reflect lung-distending forces relevant to ventilator-induced lung injury. Driving pressure (DP) is a determinant of lung strain. We developed and evaluated the oxygenation distension index (ODI) by substituting DP for Pmean in the OI formula. This observational study included children aged 1 month to 18 years with PARDS requiring ≥ 24 h of invasive mechanical ventilation in six centers. Lung ultrasound scores (LUS) and respiratory mechanics, including transpulmonary pressure (PL), transpulmonary driving pressure (DPL), mechanical power (MP), and transpulmonary mechanical power (MPL), were assessed 4–24 h after diagnosis according to PALICC-2 recommendations. Associations of OI and ODI with lung injury markers and clinical outcomes were analyzed. Among 56 patients, 41 (73%) had mild-to-moderate and 15 (27%) had severe PARDS. ODI demonstrated stronger correlations than OI with lung injury markers, including LUS (r = 0.818 vs. 0.501), PL (r = 0.779 vs. 0.697), DPL (r = 0.745 vs. 0.671), MP normalized to predicted body weight (r = 0.518 vs. 0.438), and MPL normalized to predicted body weight (r = 0.634 vs. 0.628). For 30-day mortality prediction, ODI showed higher discriminative performance than OI (AUC 0.740 [95% CI, 0.598–0.866] vs. 0.685 [95% CI, 0.535–0.835]; DeLong p = 0.040). Conclusions: By incorporating driving pressure, ODI more closely reflects lung injury severity than the conventional oxygenation index and improves discrimination for mortality in PARDS. What is Known: • The oxygenation index is the standard metric used for severity classification in pediatric acute respiratory distress syndrome. • Driving pressure has been increasingly recognized as a key physiological determinant of lung injury and clinical outcomes in ARDS. What is New: • A driving pressure–based oxygenation metric, the oxygenation distension index (ODI), shows stronger associations with established markers of lung injury than the conventional oxygenation index in PARDS. • ODI provides improved discrimination for 30-day mortality compared with the oxygenation index in mechanically ventilated children with PARDS.

  • Open Access

    An Assessment of Intermittent and Continuous Enteral Feeding in Critically Ill Children

    by Merve Misirlioglu, Dincer Yildizdas, Faruk Ekinci, Nihal Akcay, Ilyas Bingol, Ebru Sahin, Fatih Varol, Muhterem Duyu, Ayse Asik, Fatih Durak, et al.

    Background: The inability to ensure adequate nutrition for patients, and failure to provide adequate calorie and protein intake, result in malnutrition, leading to increased morbidity and mortality. The present study assesses the two approaches to enteral nutrition—intermittent and continuous enteral feeding—in critically ill pediatric patients in Türkiye to determine the superiority of one method over the other. Methods: Included in this multicenter prospective study were patients receiving enteral nutrition via a tube who were followed up over a 3-month period. Anthropometric data, calorie and protein intake, and signs of feeding intolerance were evaluated in a comparison of the different feeding methods. Results: A total of 510 patients were examined. In the continuous enteral feeding (CEF) group, 20.2% of patients developed metabolic abnormalities, and 49.5% experienced enteral nutrition intolerance, both of which were higher than in the intermittent enteral feeding (IEF) group, and the differences were statistically significant. No significant differences were observed between the two feeding methods in terms of reaching the target calorie intake on days 2 and 7 (p > 0.05). On day 7, there were significant differences between the two feeding methods in terms of calorie and protein intake (p = 0.023 and 0.014, respectively). Conclusions: In the present study, assessing the IEF and CEF approaches to enteral nutrition, critically ill pediatric patients receiving intermittent feeding exhibited lower rates of enteral nutrition intolerance and metabolic abnormalities. Furthermore, the calorie and protein intake on day 7 were noted to be higher in the IEF group than in the CEF group. Further randomized controlled trials are needed to confirm the findings of the present study.


  • Open Access

    SCOT Deficiency Mimicking Sepsis: An Unusual Cause of Increased Anion Gap Metabolic Acidosis

    by Pelin Teke Kısa, Semra Gürsoy, Pınar Seven, Neslihan Pirinc, Özlem Saraç Sandal, Gülhan Atakul, Filiz Hazan, Tijen Tanyalcın

    Introduction: Succinyl-CoA:3-oxoacid CoA transferase (SCOT, EC 2.8.3.5) deficiency is a rare autosomal recessive inborn error of metabolism (IEM). We report here an infant admitted to intensive care unit with the diagnosis of sepsis. Case Presentation: A five-month-old female patient was admitted to the intensive care unit with lethargy and respiratory distress. She had severe high anion gap metabolic acidosis. The IEM was screened by plasma amino acid analysis, showing no abnormalities, and by acylcarnitine analysis, showing low-normal levels of free carnitine. Urine organic acid analysis revealed massive ketonuria and elevated levels of dicarboxylic acids. Fatty acid oxidation disorder-targeted gene panel revealed a homozygous splice site variant (c.78+1_78+6 del) in the OXCT1 gene. Discussion and Conclusion: SCOT deficiency should be considered when massive ketosis is detected in increased anion gap metabolic acidosis with sepsis-like manifestation. Supportive therapy should be initiated quickly to prevent irreversible neurological damage.

  • The effect of myocardial dysfunction on mortality in children with septic shock: a prospective observational study

    by Ekin Soydan, Mehmet Murat, Ceren Karahan, Ahmet Gonullu, Yigit Aksoy, Gokhan Ceylan, Sevgi Topal, Mustafa Colak, Pınar Seven, Ozlem Sarac Sandal, et al.

    Pediatric septic shock is defined as progressive multi-organ dysfunction and cardiovascular dysfunction accompanying sepsis. Studies showing myocardial dysfunction associated with pediatric septic shock are very limited. The aim of this study was to evaluate the relationship between myocardial functions calculated by echocardiography, disease severity, and clinical outcomes in children with septic shock. This observational prospective study was conducted in a pediatric intensive care at a university-affiliated tertiary hospital. The patients diagnosed with septic shock between January 2021 and February 2022 were included in the study. The study was conducted with 56 patients. The rate of myocardial dysfunction (systolic and/or diastolic dysfunction) was 50%. Of these, 39.3% (n = 22) had systolic dysfunction, 17.9% (n = 10) had diastolic dysfunction, and 8.9% (n = 5) had both systolic and diastolic dysfunction. PRISM III score (p = 0.004), VIS (p < 0.001), lactate (p = 0.002), CK-MB (p = 0.023), troponin (p = 0.038), EF (p = 0.004) EF z-score (p = 0.003), MAPSE z-score (p = 0.049), TAPSE (p = 0.010), TAPSE z-score (p = 0.003), and mitral valve E/e ´z-score (p = 0.028) were statistically significant difference with mortality. No significant difference was found for mortality with MAPSE (p = 0.090), mitral valve E/A (p = 0.624), and mitral valve E/A z-score (p = 0.327). EF z-score was found to be associated with 30-day mortality (OR = 0,681, 95% CI 0,480 to 0.991, p = 0,045). We found the TAPSE z-score to be the most significant parameter with 30-day mortality (OR = 0,690, 95% CI 0,489 to 0.998, p = 0,032). Conclusion: We found left ventricular dysfunction associated factor with mortality. TAPSE showing right ventricular dysfunction was found to be the independent risk factor most associated with mortality. What is Known: • Studies showing myocardial dysfunction associated with pediatric septic shock are limited. • Little is known about the use of echocardiography in pediatric septic shock, and there are no specific guidelines for treatment and follow-up in pediatric patients. What is New: • Characteristics, echocardiographic measurements, and outcomes were comprehensively assessed in children with septic shock. • As a result of our analysis, we found that TAPSE, which is easily measured at the bedside, is the most critical parameter in relation to mortality. • We offer recommendations for its use in the follow-up of children with septic shock.


  • The impact of central line bundles on the timing of catheter-associated bloodstream infections and their microbiological distribution in critically ill children

    by İlKer Devrim, Ozlem Sarac Sandal, Miray Yılmaz Çelebi, Pınar Hepduman, Ahmet Gönüllü, Gülhan Atakul, Aybüke Akaslan Kara, Yeliz Oruç, Gamze Gülfidan, Nuri Bayram, et al.

    Catheter-associated bloodstream infection, also known as CLABSI, is the most serious consequence of central venous access devices. These infections increase the risk of mortality and morbidity. The use of central line bundles in clinical settings is increasing worldwide with the purpose of lowering the risk of catheter-associated bloodstream infections. In this study, we investigated the effect of implementing a central line bundle for the prevention of CLABSIs, the distribution of pathogens, and the duration of time it took for CLABSIs to develop in patients who had subclavian-inserted central venous catheters. This research project was a cross-sectional study investigation carried out in a pediatric tertiary teaching hospital. Participants consisted of children who had been admitted to the pediatric critical care unit with subclavian catheters during a period of 13 years. We compared the prebundle period with the bundle period for CLABSI specifically focusing on the time to infection, the number of polymicrobial infections, the proportion of Candida parapsilosis, and the percentage of Coagulase-negative staphylococci (CoNS). The “prebundle period” included the period from May 2007 to May 2013, and the “bundle period” included the period from June 2013 to June 2020. Throughout the course of the study, a total of 286 cases of CLABSI were documented. Among these patients, 141 (49.3%) had CLABSIs associated with subclavian catheters. During the prebundle period, 55 CLABSIs were diagnosed in 5235 central line days, with an overall rate of 10.5 CLABSIs per 1000 central line days; after the implementation of central line bundle, 86 CLABSIs were diagnosed in 12,450 CL days, with an overall rate of 3.6 CLABSIs per 1000 CL days. This showed a statistically significantly lower rate in the bundle period (p = 0.0126). In the prebundle period, the mean time to develop CLABSI was 15 days, whereas during the bundle period, the mean time to develop CLABSI was 27.9 days, a significantly longer time to onset (p = 0.001). While the percentage of other microorganisms was not statistically different between the prebundle and bundle periods (p > 0.05), the percentage of C. parapsilosis was significantly higher in the prebundle period (p = 0.001). Conclusion: The results of this study imply that the use of central line bundles not only reduces the incidence of CLABSI but also delays the time to which CLABSI patients acquire an infection. In addition, as a direct consequence of the CLB, the number of CLABSIs caused by gram-positive cocci did not increase, while the proportion of CLABSIs caused by C. parapsilosis decreased. What is Known: • The most significant negative consequence of central venous access devices is catheter-associated bloodstream infections. • “Care bundles” for CLABSI prevention have been reported to reduce the CLABSI rate. What is New: • Consider what would happen if the “Care bundle” failed to prevent CLABSI. • The findings of this study imply that using central line bundles not only reduces the risk of CLABSI but also extends the time it takes for patients to develop CLABSI. While the number of CLABSIs caused by gram-positive cocci did not increase as a direct result of CLB, the rate of CLABSIs caused by C. parapsilosis, which has recently become a major problem, has decreased.


  • Open Access

    Çocuk Yoğun Bakımda Yatan Hastalar İçin İstenen Çocuk Ve Ergen Psikiyatrisi Konsültasyonlarının Değerlendirilmesi

    by Özlem Saraç Sandal, Ahmet Gönüllü, Canem Kavurma, Gokhan Ceylan, Gülhan Atakul, Pınar Seven, Ferhat Sari, Utku Karaarslan, Hasan Ağin

    Amaç: Pediyatrik Yoğun Bakım Ünitesinde yatan bedensel hastalığı olan çocuklarda davranışsal-duygusal psikopatolojiler sıklıkla gelişmektedir. Fiziksel hastalığa eşlik eden bu ruhsal durumlar tedaviyi uyumu bozarak olumsuz sonuçlara yol açabilmektedir. Bu çalışmada çocuk yoğun bakım ünitemizde kritik hastalık nedeniyle izlenen hastalar için son 3 yıl içinde istenen çocuk psikiyatri konsultasyonlarının değerlendirilmesi amaçlanmıştır Gereç ve Yöntem: Çalışmamızda 2019-2022 yılları arasında Dr. Behçet Uz Çocuk Hastanesi Çocuk Yoğun Bakım ünitesinde izlenen çocuk psikiyatrisi konsültasyonu istenen hastaların verileri geriye dönük olarak taranmıştır. Hastaların demografik özellikleri, bedensel hastalık tanıları, konsültasyonların istenme nedenleri, konsültasyon sonucunda saptanan psikiyatrik tanılar ve bunun sonucunda tedavi uygulanıp uygulanmadığı, verilen bir tedavi olması durumunda hangi medikal tedavilerin tercih edildiği, psikiyatrik tedavi ve izlem sürecine ilişkin veriler kaydedilmiştir Bulgular: Üç yıllık sürede çocuk yoğun bakımda izlenen çocukların 118’i (%4,9) için psikiyatri konsültasyonu istenmiştir. Konsültasyon istenenlerin çoğu kızdır (%61,9) ve 12 yaş veya üzeri yaşta % 71,4 hasta bulunmaktadır. En sık konsültasyon isteme nedeni özkıyım girişimleri (%33,1) ve depresif görünüm (%25,5) olarak saptanmış olup en sık konulan tanı majör depresif bozukluk ve uyum bozukluğudur. Olguların %31’inde psikotrop ilaç başlanmış olup erkekler ve kızlar arasında anlamlı fark saptanmamıştır. Sonuç: Bu çalışma bedensel hastalığı olan kritik çocuk yoğun bakım hastalarında ruhsal hastalıkların sık görülmesine rağmen psikiyatri konsültasyonu istenme oranlarının düşük olduğunu saptamıştır. Bu durum yoğun bakım hekimlerinin belirtileri anlama ve değerlendirme konusunda hastaların bilinç durumları ve primer hastalıkları nedeniyle güçlükler yaşadığına işaret etmektedir. Bu nedenle çocuk psikiyatrisi ile birlikte multidisipliner bir yaklaşım izlemeleri ve işbirliği içinde olmaları hastanın tedaviye uyumunu arttırarak yatış sürelerini kısaltacaktır.


  • Open Access

    A retrospective comparative analysis of factors affecting the decision and outcome of initial intravenous immunoglobulin alone or intravenous immunoglobulin plus methylprednisolone use in children with the multisystem inflammatory syndrome

    by İlKer Devrim, Elif Böncüoğlu, Elif Kıymet, Şahika Şahinkaya, Miray Yılmaz Çelebi, Ela Cem, Mine Düzgöl, Kamile Ötiken Arıkan, Aybüke Akaslan Kara, Dorukhan Besin, et al.

    Background: For children with the multisystem inflammatory syndrome(MIS-C), intravenous immunoglobulins (IVIG) with or without methylprednisolone are the most effective treatment. In this study, IVIG combined with methylprednisolone was compared to IVIG used alone in children with MIS-C.Methods: This retrospective cohort study was carried out between April 1, 2020, and November 1, 2021. This study covered all children with MIS-C. According to whether they received IVIG alone or IVIG with methylprednisolone as an initial treatment for MIS-C, the patients were split into two groups. The IVIG dosage for the patients in group I was 2 gr/kg, whereas the IVIG dosage for the patients in group II was 2 gr/kg + 2 mg/kg/day of methylprednisolone. These two groups were contrasted in terms of the frequency of fever, length of hospital stay, and admission to the pediatric intensive care unit.Results: The study comprised 91 patients who were diagnosed with MIS-C and were under the age of 18. 42 (46.2%) of these patients were in the IVIG alone group (group I), and 49 (53.8%) were in the IVIG + methylprednisolone group (group II). Patients in group II had a severe MIS-C ratio of 36.7%, which was substantially greater than the rate of severe MIS-C patients in group I (9.5%) (p 0.01). When compared to group I (9.5%), the rate of hypotension was considerably higher in group II (30.6%) (p = 0.014). Additionally, patients in group II had considerably higher mean serum levels of C-reactive protein. The incidence of fever recurrence was 26.5% in group II and 33.3% in group I, however the difference was not statistically significant (p > 0.05).Conclusions: The choice of treatment for patients with MIS-C should be based on an individual evaluation. In MIS-C children with hypotension and/or with an indication for a pediatric intensive care unit, a combination of IVIG and methylprednisolone may be administered. For the treatment modalities of children with MIS-C, however, randomized double-blind studies are necessary.


  • Are clinical features and cardiac biomarkers at admission related to severity in pediatric acute myocarditis?

    by Fatma Akgül, Anıl Er, Emel Ulusoy, Aykut Çağlar, Gamze Vuran, Pınar Seven, Murat Muhtar Yılmazer, Hasan Ağın, Hurşit Apa


  • Open Access

    Assessment of assynchronies on pressure time product (PTP) in active pediatric patients

    by Gokhan Ceylan, Sevgi Topal, Özlem Saraç Sandal, Gülhan Atakul, Mustafa Colak, Ekin Soydan, Pınar Seven, Ferhat Sari, Utku Karaarslan, Hasan Ağin

    Aim: To reveal the effect of synchronous or asynchronous patients on these values by examining the esophageal pressure (Pes ), transpulmonary pressure (PL), and time-pressure-product (PTP) in active patients who are planned to be weaned from the mechanical ventilator and can trigger their own respiration. Material and Methods: Patients who are monitored on a mechanical ventilator and who can trigger their own respiration, and who are planned to be separated from the mechanical ventilator in the near future, were taken and an esophageal catheter was inserted, then the catheter filling volume was first optimized and then validated, and PL was started to be recorded by removing Pes from the airway pressure. With the recording devices on the ventilator, the mechanical ventilation parameters of the patients were recorded as both monitoring values and waveforms. Then, the mechanical ventilation settings were rearranged by the clinician at the bedside with reference to the esophageal waveform. Then, the waveforms of these patients have examined on the Matlab E2019a (Mathworks, USA) software, and each breath was marked as synchronous-asynchronous and the asynchrony index (AI) was calculated. Accordingly, the asynchronous and synchronous periods of the patient were defined, and the values of ∆Pes, ∆PL, PTP-Pes, PTP-PL, PTP-Pes-minutes, PTP-PL-minutes between the synchronous and asynchronous periods of the same patient were calculated on Matlab software, and synchronous and The changes in these values between asynchronous periods were analyzed with the SPSS statistical program. After examining the distribution of the variables by visual and analytical methods (Shapiro-Wilk), the statistical difference between the groups was examined. Results: When the synchronous and asynchronous periods of all patients were compared, the following differences were found between the synchronous and asynchronous groups in favor of the synchronous group. ∆Peso [5.98 (3.55-9.08)] cmH2O, ∆PL [5 (2.7-7.25]cmH2O, ∆PTP-Peso [3.70 (2.81-4.6)) ]cmH2O*s, ∆PTP-PL [3.36 (1.39-4.18)]cmH2O*s, ∆PTP-Peso/min [1.72 (1.02-2.67)]cmH2O*min , ∆PTP-PL/min [1.25 (0.30-3.01)]cmH2O*min. Conclusion: It has also been shown by statistical analyzes that the synchronization of active patients who are planned to be weaned from mechanical ventilator and who can trigger their own respiration causes a decrease in the values of ∆Peso, ∆Ptranspulmonary, PTP-Peso,PTP-Ptranspulmonary, PTP-Peso-minute, PTP-Ptranspulmonary-minute. When this information about synchronization is correlated with the literature, Pes monitoring in patients and synchronization of patients prevent mechanical ventilation-related lung damage that may occur in these patients, and thus the duration of hospital stay due to asynchrony, failure to wean from the ventilator, and the consequences that may occur. It is a method that can be useful in reducing mortality and morbidity.