Objective To explore the value of vesical imaging reporting and data system(VI-RADS)combined with absolute tumor-wall contact length(ABTCL)and actual tumor-wall contact length(ACTCL)in diagnosing muscle invasive bladder cancer(MIBC).Methods The MRI data of 113 patients with pathologically confirmed bladder cancer(BCa)were analyzed retrospectively.All patients underwent conventional MRI,diffusion weighted imaging(DWI)and dynamic contrast enhanced(DCE)MRI before sur-gery.Two radiologists independently evaluated MRI images based on VI-RADS score,and measured quantitative parameters,inclu-ding ABTCL and ACTCL.The Chi-square test was used to compare the difference of VI-RADS scores between MIBC and non-mus-cle invasive bladder cancer(NMIBC).Quantitative parameters between MIBC and NMIBC were compared by Mann-Whitney U test.The receiver operating characteristic(ROC)curve was used to evaluate the diagnostic value of VI-RADS,quantitative parameters and VI-RADS combined with quantitative parameters in the diagnosis of MIBC.Results VI-RADS,ABTCL and ACTCL had significant differences between MIBC and NMIBC(P＜0.05).The area under the curve(AUC)for VI-RADS,ABTCL and ACTCL in diagno-sing MIBC were 0.89,0.76 and 0.77,respectively.There was no significant difference between the AUC for ABTCL and ACTCL(P＞0.05).The AUC for VI-RADS combined with ABTCL or ACTCL in diagnosing MIBC was 0.93,higher than that of only VI-RADS(P＜0.05).Conclusion The combination of VI-RADS with either ABTCL or ACTCL can effectively improve the diagnostic performance of MIBC.ABTCL obtainedby linear measurement is easier to implement in clinical practice than ACTCL obtained by curved measurement.

Objective:To study the current status and existing problems of bronchopulmonary dysplasia (BPD) in preterm infants in Chinese literature using bibliometric methods.Methods:Using "preterm infants", "BPD" and "chronic lung disease of prematurity"(Chinese version)as keywords, Wanfang database was searched up to August 27th, 2022. Literature published in high-influencing journals were selected for bibliometrical and social network analysis.Results:A total of 2 172 articles published in 311 journals were included. The number of articles increased rapidly year by year, involving studies on the risk factors and respiratory management of BPD. Dynamic researches focused on the following topics:1,selection of multiple non-invasive ventilation modes combined with minimally invasive surfactant administration; 2,the application of caffeine and glucocorticoids and 3, follow-up after discharge.Conclusions:In the past 40 years, research on BPD in preterm infants in China has mainly focused on risk factors and prevention. However, research on pathogenesis and other aspects needs to be strengthened.

Objective:To study the clinical effect of dynamic reconstruction of lower lip defect after squamous cell cancer resection by using unilateral Gillies fan flap and perioral muscle restoration.Methods:From Feburary 2017 to January 2020, 8 patients (6 female and 2 male, aged 55-81, 62.9 in average)diagnosed lower lip squamous cell carcinoma were accepted treatment in the Department of Otolaryngology Head & Neck Surgery, the First Affiliated Hospital of Xiamen University. All the moderate lower lip defect after cancer resection were repaired with unilateral Gillies fan flap with perioral muscle restoration under general anesthesia. The length of the vermilion of the upper lip in the Gillies fan flap was designed to be 1/3 of the length of the vermilion of the lower lip defect. The composite axial flap was prepared with the blood supply from contralateral upper lip artery-ipsilateral upper lip artery-mouth corner part of facial artery-ipsilateral lower lip artery.The end of all the perioral muscles were also prepared. After reconstruction of the continuity of the orbicularis oris, the ends of these perioral radiation muscles were restored in the position where they should be in the reconstructed lip.These perioral muscles training were undergone for 6 months after operation. After the reconstructed lip tend to be stable, measurement and calculation were carried out to evaluate the appearance, opening and closing functions of the mouth.Results:In our series of 8 cases, the length of the vermilion of the upper/lower lip was 52.4 mm(46.0-60.0 mm) in average; the circumference of the vermilion was 104.8 mm(92-120 mm)in average; the length of the defect of lower lip was 27.6 mm (21.0-35.0 mm)in average, 52.5% (42.0-67.3%) of the vermilion of lower lip. Six cases were using the right-side flap, and the other 2 cases were left. The length of the vermilion of the upper lip in the Gillies fan flap was 9.5 mm(7.0-12.0 mm)in average.All cases healed well with inconspicuous scar. No infection, hematoma or other surgical complications.No local or distant recurrence of cancer was observed during the follow-up period. Numbness of the lower lip happened posto-peration, and gradually disappeared 6 months later.Evaluation was conducted according to the measurement result preoperatively and 6 months postoperatively. (1) Appearance: the reconstructed lips were naturally symmetrical. Both side of the mouth corner were in the same horizontal level. The upper lip was lengthened with average increase of 6.8 mm and average increase rate of 15.9%. The lower lip was lengthened with average increase of 15.4 mm and average increase rate of 45.3%. In the rest situation, the circumference of the lips decreased by 5.5 mm in average compared with that preoperatively, which was 94.9% of the lip preoperatively, basically rehabilitate to the shape preoperatively.(2) Mouth-opening function: 1 week postoperation, the opening shape of mouth in all the cases was skewed with an about 1.5 fingers mouth-opening. Six months later, the opening shape of mouth was basically symmetrical round with a 3 fingers mouth-opening; in maximum mouth opening situation, the circumference of the lips decreased by 46.5 mm in average compared with that preoperatively, which was 73.1% of the lip in maximum mouth opening situation preoperatively, basically meeting physiological needs. (3) Mouth-closing function: All patient shave complete mouth-closing function and speech function.No leakage when making closed lip sound and whistling. All patients were satisfied with the oral appearance and the function of opening and closing mouth.Conclusions:Unilateral Gillies fan flap with perioral muscle restoration is a reliable method to repair the moderate full-thickness defect of the lower lip after cancer resection. After dynamic reconstruction of the perioral muscle group, the insufficient tissue of lips can be extended to obtain sufficient mouth opening, natural corner of the mouth and symmetrical lip appearance.

Objective:To study the clinical effect of dynamic reconstruction of lower lip defect after squamous cell cancer resection by using unilateral Gillies fan flap and perioral muscle restoration.Methods:From Feburary 2017 to January 2020, 8 patients (6 female and 2 male, aged 55-81, 62.9 in average)diagnosed lower lip squamous cell carcinoma were accepted treatment in the Department of Otolaryngology Head & Neck Surgery, the First Affiliated Hospital of Xiamen University. All the moderate lower lip defect after cancer resection were repaired with unilateral Gillies fan flap with perioral muscle restoration under general anesthesia. The length of the vermilion of the upper lip in the Gillies fan flap was designed to be 1/3 of the length of the vermilion of the lower lip defect. The composite axial flap was prepared with the blood supply from contralateral upper lip artery-ipsilateral upper lip artery-mouth corner part of facial artery-ipsilateral lower lip artery.The end of all the perioral muscles were also prepared. After reconstruction of the continuity of the orbicularis oris, the ends of these perioral radiation muscles were restored in the position where they should be in the reconstructed lip.These perioral muscles training were undergone for 6 months after operation. After the reconstructed lip tend to be stable, measurement and calculation were carried out to evaluate the appearance, opening and closing functions of the mouth.Results:In our series of 8 cases, the length of the vermilion of the upper/lower lip was 52.4 mm(46.0-60.0 mm) in average; the circumference of the vermilion was 104.8 mm(92-120 mm)in average; the length of the defect of lower lip was 27.6 mm (21.0-35.0 mm)in average, 52.5% (42.0-67.3%) of the vermilion of lower lip. Six cases were using the right-side flap, and the other 2 cases were left. The length of the vermilion of the upper lip in the Gillies fan flap was 9.5 mm(7.0-12.0 mm)in average.All cases healed well with inconspicuous scar. No infection, hematoma or other surgical complications.No local or distant recurrence of cancer was observed during the follow-up period. Numbness of the lower lip happened posto-peration, and gradually disappeared 6 months later.Evaluation was conducted according to the measurement result preoperatively and 6 months postoperatively. (1) Appearance: the reconstructed lips were naturally symmetrical. Both side of the mouth corner were in the same horizontal level. The upper lip was lengthened with average increase of 6.8 mm and average increase rate of 15.9%. The lower lip was lengthened with average increase of 15.4 mm and average increase rate of 45.3%. In the rest situation, the circumference of the lips decreased by 5.5 mm in average compared with that preoperatively, which was 94.9% of the lip preoperatively, basically rehabilitate to the shape preoperatively.(2) Mouth-opening function: 1 week postoperation, the opening shape of mouth in all the cases was skewed with an about 1.5 fingers mouth-opening. Six months later, the opening shape of mouth was basically symmetrical round with a 3 fingers mouth-opening; in maximum mouth opening situation, the circumference of the lips decreased by 46.5 mm in average compared with that preoperatively, which was 73.1% of the lip in maximum mouth opening situation preoperatively, basically meeting physiological needs. (3) Mouth-closing function: All patient shave complete mouth-closing function and speech function.No leakage when making closed lip sound and whistling. All patients were satisfied with the oral appearance and the function of opening and closing mouth.Conclusions:Unilateral Gillies fan flap with perioral muscle restoration is a reliable method to repair the moderate full-thickness defect of the lower lip after cancer resection. After dynamic reconstruction of the perioral muscle group, the insufficient tissue of lips can be extended to obtain sufficient mouth opening, natural corner of the mouth and symmetrical lip appearance.

Objective:To study the clinical effect of dynamic reconstruction of lower lip defect after squamous cell cancer resection by using unilateral Gillies fan flap and perioral muscle restoration.Methods:From Feburary 2017 to January 2020, 8 patients (6 female and 2 male, aged 55-81, 62.9 in average)diagnosed lower lip squamous cell carcinoma were accepted treatment in the Department of Otolaryngology Head & Neck Surgery, the First Affiliated Hospital of Xiamen University. All the moderate lower lip defect after cancer resection were repaired with unilateral Gillies fan flap with perioral muscle restoration under general anesthesia. The length of the vermilion of the upper lip in the Gillies fan flap was designed to be 1/3 of the length of the vermilion of the lower lip defect. The composite axial flap was prepared with the blood supply from contralateral upper lip artery-ipsilateral upper lip artery-mouth corner part of facial artery-ipsilateral lower lip artery.The end of all the perioral muscles were also prepared. After reconstruction of the continuity of the orbicularis oris, the ends of these perioral radiation muscles were restored in the position where they should be in the reconstructed lip.These perioral muscles training were undergone for 6 months after operation. After the reconstructed lip tend to be stable, measurement and calculation were carried out to evaluate the appearance, opening and closing functions of the mouth.Results:In our series of 8 cases, the length of the vermilion of the upper/lower lip was 52.4 mm(46.0-60.0 mm) in average; the circumference of the vermilion was 104.8 mm(92-120 mm)in average; the length of the defect of lower lip was 27.6 mm (21.0-35.0 mm)in average, 52.5% (42.0-67.3%) of the vermilion of lower lip. Six cases were using the right-side flap, and the other 2 cases were left. The length of the vermilion of the upper lip in the Gillies fan flap was 9.5 mm(7.0-12.0 mm)in average.All cases healed well with inconspicuous scar. No infection, hematoma or other surgical complications.No local or distant recurrence of cancer was observed during the follow-up period. Numbness of the lower lip happened posto-peration, and gradually disappeared 6 months later.Evaluation was conducted according to the measurement result preoperatively and 6 months postoperatively. (1) Appearance: the reconstructed lips were naturally symmetrical. Both side of the mouth corner were in the same horizontal level. The upper lip was lengthened with average increase of 6.8 mm and average increase rate of 15.9%. The lower lip was lengthened with average increase of 15.4 mm and average increase rate of 45.3%. In the rest situation, the circumference of the lips decreased by 5.5 mm in average compared with that preoperatively, which was 94.9% of the lip preoperatively, basically rehabilitate to the shape preoperatively.(2) Mouth-opening function: 1 week postoperation, the opening shape of mouth in all the cases was skewed with an about 1.5 fingers mouth-opening. Six months later, the opening shape of mouth was basically symmetrical round with a 3 fingers mouth-opening; in maximum mouth opening situation, the circumference of the lips decreased by 46.5 mm in average compared with that preoperatively, which was 73.1% of the lip in maximum mouth opening situation preoperatively, basically meeting physiological needs. (3) Mouth-closing function: All patient shave complete mouth-closing function and speech function.No leakage when making closed lip sound and whistling. All patients were satisfied with the oral appearance and the function of opening and closing mouth.Conclusions:Unilateral Gillies fan flap with perioral muscle restoration is a reliable method to repair the moderate full-thickness defect of the lower lip after cancer resection. After dynamic reconstruction of the perioral muscle group, the insufficient tissue of lips can be extended to obtain sufficient mouth opening, natural corner of the mouth and symmetrical lip appearance.

Objective:To study the clinical effect of dynamic reconstruction of lower lip defect after squamous cell cancer resection by using unilateral Gillies fan flap and perioral muscle restoration.Methods:From Feburary 2017 to January 2020, 8 patients (6 female and 2 male, aged 55-81, 62.9 in average)diagnosed lower lip squamous cell carcinoma were accepted treatment in the Department of Otolaryngology Head & Neck Surgery, the First Affiliated Hospital of Xiamen University. All the moderate lower lip defect after cancer resection were repaired with unilateral Gillies fan flap with perioral muscle restoration under general anesthesia. The length of the vermilion of the upper lip in the Gillies fan flap was designed to be 1/3 of the length of the vermilion of the lower lip defect. The composite axial flap was prepared with the blood supply from contralateral upper lip artery-ipsilateral upper lip artery-mouth corner part of facial artery-ipsilateral lower lip artery.The end of all the perioral muscles were also prepared. After reconstruction of the continuity of the orbicularis oris, the ends of these perioral radiation muscles were restored in the position where they should be in the reconstructed lip.These perioral muscles training were undergone for 6 months after operation. After the reconstructed lip tend to be stable, measurement and calculation were carried out to evaluate the appearance, opening and closing functions of the mouth.Results:In our series of 8 cases, the length of the vermilion of the upper/lower lip was 52.4 mm(46.0-60.0 mm) in average; the circumference of the vermilion was 104.8 mm(92-120 mm)in average; the length of the defect of lower lip was 27.6 mm (21.0-35.0 mm)in average, 52.5% (42.0-67.3%) of the vermilion of lower lip. Six cases were using the right-side flap, and the other 2 cases were left. The length of the vermilion of the upper lip in the Gillies fan flap was 9.5 mm(7.0-12.0 mm)in average.All cases healed well with inconspicuous scar. No infection, hematoma or other surgical complications.No local or distant recurrence of cancer was observed during the follow-up period. Numbness of the lower lip happened posto-peration, and gradually disappeared 6 months later.Evaluation was conducted according to the measurement result preoperatively and 6 months postoperatively. (1) Appearance: the reconstructed lips were naturally symmetrical. Both side of the mouth corner were in the same horizontal level. The upper lip was lengthened with average increase of 6.8 mm and average increase rate of 15.9%. The lower lip was lengthened with average increase of 15.4 mm and average increase rate of 45.3%. In the rest situation, the circumference of the lips decreased by 5.5 mm in average compared with that preoperatively, which was 94.9% of the lip preoperatively, basically rehabilitate to the shape preoperatively.(2) Mouth-opening function: 1 week postoperation, the opening shape of mouth in all the cases was skewed with an about 1.5 fingers mouth-opening. Six months later, the opening shape of mouth was basically symmetrical round with a 3 fingers mouth-opening; in maximum mouth opening situation, the circumference of the lips decreased by 46.5 mm in average compared with that preoperatively, which was 73.1% of the lip in maximum mouth opening situation preoperatively, basically meeting physiological needs. (3) Mouth-closing function: All patient shave complete mouth-closing function and speech function.No leakage when making closed lip sound and whistling. All patients were satisfied with the oral appearance and the function of opening and closing mouth.Conclusions:Unilateral Gillies fan flap with perioral muscle restoration is a reliable method to repair the moderate full-thickness defect of the lower lip after cancer resection. After dynamic reconstruction of the perioral muscle group, the insufficient tissue of lips can be extended to obtain sufficient mouth opening, natural corner of the mouth and symmetrical lip appearance.

Objective:To study the clinical effect of dynamic reconstruction of lower lip defect after squamous cell cancer resection by using unilateral Gillies fan flap and perioral muscle restoration.Methods:From Feburary 2017 to January 2020, 8 patients (6 female and 2 male, aged 55-81, 62.9 in average)diagnosed lower lip squamous cell carcinoma were accepted treatment in the Department of Otolaryngology Head & Neck Surgery, the First Affiliated Hospital of Xiamen University. All the moderate lower lip defect after cancer resection were repaired with unilateral Gillies fan flap with perioral muscle restoration under general anesthesia. The length of the vermilion of the upper lip in the Gillies fan flap was designed to be 1/3 of the length of the vermilion of the lower lip defect. The composite axial flap was prepared with the blood supply from contralateral upper lip artery-ipsilateral upper lip artery-mouth corner part of facial artery-ipsilateral lower lip artery.The end of all the perioral muscles were also prepared. After reconstruction of the continuity of the orbicularis oris, the ends of these perioral radiation muscles were restored in the position where they should be in the reconstructed lip.These perioral muscles training were undergone for 6 months after operation. After the reconstructed lip tend to be stable, measurement and calculation were carried out to evaluate the appearance, opening and closing functions of the mouth.Results:In our series of 8 cases, the length of the vermilion of the upper/lower lip was 52.4 mm(46.0-60.0 mm) in average; the circumference of the vermilion was 104.8 mm(92-120 mm)in average; the length of the defect of lower lip was 27.6 mm (21.0-35.0 mm)in average, 52.5% (42.0-67.3%) of the vermilion of lower lip. Six cases were using the right-side flap, and the other 2 cases were left. The length of the vermilion of the upper lip in the Gillies fan flap was 9.5 mm(7.0-12.0 mm)in average.All cases healed well with inconspicuous scar. No infection, hematoma or other surgical complications.No local or distant recurrence of cancer was observed during the follow-up period. Numbness of the lower lip happened posto-peration, and gradually disappeared 6 months later.Evaluation was conducted according to the measurement result preoperatively and 6 months postoperatively. (1) Appearance: the reconstructed lips were naturally symmetrical. Both side of the mouth corner were in the same horizontal level. The upper lip was lengthened with average increase of 6.8 mm and average increase rate of 15.9%. The lower lip was lengthened with average increase of 15.4 mm and average increase rate of 45.3%. In the rest situation, the circumference of the lips decreased by 5.5 mm in average compared with that preoperatively, which was 94.9% of the lip preoperatively, basically rehabilitate to the shape preoperatively.(2) Mouth-opening function: 1 week postoperation, the opening shape of mouth in all the cases was skewed with an about 1.5 fingers mouth-opening. Six months later, the opening shape of mouth was basically symmetrical round with a 3 fingers mouth-opening; in maximum mouth opening situation, the circumference of the lips decreased by 46.5 mm in average compared with that preoperatively, which was 73.1% of the lip in maximum mouth opening situation preoperatively, basically meeting physiological needs. (3) Mouth-closing function: All patient shave complete mouth-closing function and speech function.No leakage when making closed lip sound and whistling. All patients were satisfied with the oral appearance and the function of opening and closing mouth.Conclusions:Unilateral Gillies fan flap with perioral muscle restoration is a reliable method to repair the moderate full-thickness defect of the lower lip after cancer resection. After dynamic reconstruction of the perioral muscle group, the insufficient tissue of lips can be extended to obtain sufficient mouth opening, natural corner of the mouth and symmetrical lip appearance.

Objective:To study the clinical effect of dynamic reconstruction of lower lip defect after squamous cell cancer resection by using unilateral Gillies fan flap and perioral muscle restoration.Methods:From Feburary 2017 to January 2020, 8 patients (6 female and 2 male, aged 55-81, 62.9 in average)diagnosed lower lip squamous cell carcinoma were accepted treatment in the Department of Otolaryngology Head & Neck Surgery, the First Affiliated Hospital of Xiamen University. All the moderate lower lip defect after cancer resection were repaired with unilateral Gillies fan flap with perioral muscle restoration under general anesthesia. The length of the vermilion of the upper lip in the Gillies fan flap was designed to be 1/3 of the length of the vermilion of the lower lip defect. The composite axial flap was prepared with the blood supply from contralateral upper lip artery-ipsilateral upper lip artery-mouth corner part of facial artery-ipsilateral lower lip artery.The end of all the perioral muscles were also prepared. After reconstruction of the continuity of the orbicularis oris, the ends of these perioral radiation muscles were restored in the position where they should be in the reconstructed lip.These perioral muscles training were undergone for 6 months after operation. After the reconstructed lip tend to be stable, measurement and calculation were carried out to evaluate the appearance, opening and closing functions of the mouth.Results:In our series of 8 cases, the length of the vermilion of the upper/lower lip was 52.4 mm(46.0-60.0 mm) in average; the circumference of the vermilion was 104.8 mm(92-120 mm)in average; the length of the defect of lower lip was 27.6 mm (21.0-35.0 mm)in average, 52.5% (42.0-67.3%) of the vermilion of lower lip. Six cases were using the right-side flap, and the other 2 cases were left. The length of the vermilion of the upper lip in the Gillies fan flap was 9.5 mm(7.0-12.0 mm)in average.All cases healed well with inconspicuous scar. No infection, hematoma or other surgical complications.No local or distant recurrence of cancer was observed during the follow-up period. Numbness of the lower lip happened posto-peration, and gradually disappeared 6 months later.Evaluation was conducted according to the measurement result preoperatively and 6 months postoperatively. (1) Appearance: the reconstructed lips were naturally symmetrical. Both side of the mouth corner were in the same horizontal level. The upper lip was lengthened with average increase of 6.8 mm and average increase rate of 15.9%. The lower lip was lengthened with average increase of 15.4 mm and average increase rate of 45.3%. In the rest situation, the circumference of the lips decreased by 5.5 mm in average compared with that preoperatively, which was 94.9% of the lip preoperatively, basically rehabilitate to the shape preoperatively.(2) Mouth-opening function: 1 week postoperation, the opening shape of mouth in all the cases was skewed with an about 1.5 fingers mouth-opening. Six months later, the opening shape of mouth was basically symmetrical round with a 3 fingers mouth-opening; in maximum mouth opening situation, the circumference of the lips decreased by 46.5 mm in average compared with that preoperatively, which was 73.1% of the lip in maximum mouth opening situation preoperatively, basically meeting physiological needs. (3) Mouth-closing function: All patient shave complete mouth-closing function and speech function.No leakage when making closed lip sound and whistling. All patients were satisfied with the oral appearance and the function of opening and closing mouth.Conclusions:Unilateral Gillies fan flap with perioral muscle restoration is a reliable method to repair the moderate full-thickness defect of the lower lip after cancer resection. After dynamic reconstruction of the perioral muscle group, the insufficient tissue of lips can be extended to obtain sufficient mouth opening, natural corner of the mouth and symmetrical lip appearance.

Objective To explore the relationship between the maximum standardized uptake value ( SUVmax ) of 18 F-fluoromisonidazole ( FMISO) PET/CT and the pathological classification, differentiation, T stage and primary tumor volume of nasopharyngeal carcinoma ( NPC) . Methods A retrospective analysis was performed on 41 patients with NPC (31 males, age 18-74 years;10 females, age 35-67 years) who underwent head and neck 18 F-FMISO PET/CT from 2012 to 2015. The relationship between the clinicopath-ological parameters (pathological classification, differentiation, T stage, tumor volume) of primary lesion and SUVmax were analyzed. Mann-Whitney u test, approximate t test and Spearman correlation were used for data analysis. Results There was no significant difference in SUVmax between non-keratinizing carcinoma and squamous cell carcinoma ( u=183.5, P>0.05) , nor between the differentiated carcinoma and undiffer-entiated carcinoma( t'=-1.23, P>0.05) . SUVmax of T1-T2 primary tumor was significantly lower than that of T3-T4 tumor (1.52±0.43 vs 2.05±0.85; t'=-2.60, P<0.05), and SUVmax was correlated with primary tumor volume ( rs=0.488, P<0.05) . Conclusions The hypoxic degree is related with T stage and primary tumor volume in NPC. The combination analysis of T stage and tumor size will contribute to the assessment of oxygen level and prognosis of primary NPC.

Objective To study the predictive value of hemodynamic monitoring in the responsiveness of fluid therapy in neonatal septic shock.Method The 96 neonates with septic shock admitted to the NICU from Wuhan Children's Hospital and Tongji Hospital between March 2014 to May 2017 were enrolled.Hemodynamics parameters of neonates pre-,1 hour and 6 hour post-fluid therapy were supervised by ultrasonic cardiac output monitor.The hemodynamics parameters included cardiac index (CI),systemic vascular resistance (SVR),stroke volume (SV),stroke volume variation (SVV),stroke volume index (SVI) and corrected flow time (FTc).The SVI variation (△ SVI) were calculated based on the SVI among pre-and post-fluid therapy.According to the △ SVI,these samples were assigned into two groups,responsive group with a △ SVI ≥10％,and the other was nonresponsive group respectively.T-test was applied to analyze the differences of hemodynamic parameters between two groups.The associations between SVV、FTc and △ SVI were evaluated by bivariate correlation.Receiver operating characteristic curve (ROC) was used to evaluate the predictive value of SVV and FTc in fluid responsiveness.All statistical analyses were performed by SPSS 19.0,P＜0.05 was considered as statistically significant.Result A total of 96 cases were enrolled,of which 54 were fluid responsive group,while 42 were nonresponsive group.(1) Before fluid resuscitation,the FTc in responsive and nonresponsive groups were (317.1±22.2) ms and (326.8± 21.2) ms (P＜0.05) respectively,SVV were(18.3±2.0)％ and (15.0±2.6)％ (P＜0.05).SVV was significantly associated with △ SVI (r=0.542,P＜0.05).(2) There were statistically significant differences in heart rate,mean arterial pressure,cardiac output,cardiac index,stroke volume and systemic vascular resistance index before treatment,1 h and 6 h after treatment (P＜0.05).(3) The area under the ROC of SVV (AUC) was 0.838 (95％CI 0.749～0.906).A sensitivity of 98.2％,and specificity 73.8％ when SVV defined as 15.5％,with a significant difference when compared with FTc (AUC=0.642,95％CI 0.538～0.737) (P＜0.01).Conclusion SVV could be a reliable predictive index in estimating fluid responsiveness of neonatal septic shock and could be helpful parameter in clinic diagnosis.