Ct Evaluation of Acupuncture Needles Inserted into Sacral Foramina

2016 ◽  
Vol 34 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Yuichi Katayama ◽  
Toyoharu Kamibeppu ◽  
Ryuichi Nishii ◽  
Shoichiro Mukai ◽  
Hironobu Wakeda ◽  
...  
Keyword(s):  
Average Distance ◽  
Ct Scanning ◽  
Adult Women ◽  
Acupuncture Needle ◽  
Sacral Nerve ◽  
Sacral Nerve Modulation ◽  
Ct Evaluation ◽  
Group A ◽  
Sacral Foramina ◽  
Group B

Objective To use CT scanning to evaluate the precision with which acupuncture needles can be inserted into sacral foramina to establish sacral nerve modulation by electroacupuncture. Methods The subjects were five adult women (mean age 71.6 years). These five cases were divided into two groups. In the first three subjects (group A) the intention was to insert acupuncture needles in the S3 and S4 foramina; in the remaining two subjects (group B) the intention was to insert acupuncture needles in the S2 and S3 foramina. Results CT scanning showed that in subject 1 of group A, the acupuncture needle intended for insertion in S3 was actually in the S4 foramen, and the acupuncture needle intended for insertion in S4 was actually distal to the sacral body. In subjects 2 and 3, the acupuncture needles were inserted accurately in the S3 and S4 foramina. In the three subjects who had acupuncture needles inserted in the S4 foramen, the tip of the acupuncture needle was an average distance of 6.0 mm from the rectum. The acupuncture needles inserted in subjects 4 and 5 of group B were inserted accurately into the S2 and S3 foramina. Conclusions Inserting acupuncture needles into the sacral foramina of S2 and S3 at an angle of about 60° has the potential to be used for sacral nerve modulation by repeated electroacupuncture stimulation. Needling may be less accurate in subjects with higher body mass index. Because of the potential risk of perforating the rectum with the needle, this technique must be used by specialists only. Trial Registration Number 2013-026

scholarly journals Evaluation of the efficacy of Latakaranja as Antispasmodic Drug in Kastaartava - A Randomised Clinical Control Trial

2020 ◽  
Vol 5 (05) ◽  
pp. 116-122
Author(s):  
Dhiraj Ojha ◽  
P.K. Rawal ◽  
Shrishail S. Pujeri ◽  
Sunita Shirguppi
Keyword(s):  
Back Pain ◽  
Family Doctor ◽  
Research Work ◽  
Causative Factor ◽  
Adult Women ◽  
Duration Of Treatment ◽  
Post Test ◽  
Group A ◽  
Clinical Control Trial ◽  
Group B

Kastaartava (Dysmenorrohea) is a greek word, describes about painful menstruation which the Pratyatmaka Lakhshans of various Yonivyapad that are Vatala Yonivyapad, Udavartini Yonivyapad, Paripluta Yonivyapad, Mahayoni and Vataja Artava Dusti that affects 75% of adolscents, 25-50% of adult women and 5-20% having dysmenorrhea. It is a common reason for losing time at school or work or visiting family doctor. Morbid Vatadosha especially Apanavata is a causative factor of Kastaartava. Vatahara properties are beneficial considering the morbidity and complications that are caused by Kastaaratava, mentioned above herbal preparation has been tried here. This research work is randomized control clinical study with Pre-test and Post-test design. 40 patients suffering from Kastaaratava (Dysmenorrohoea) were selected randomly for study. The selected patients were divided into 2 groups, 20 patients each. The selected 20 patients in Group A (Trial group) were administered Latakaranja Beeja Churna orally. The selected 20 patients in Group B (Controlled group) were administered Rajapravartini Vati. The duration of treatment was for 03 days of menstruation for 2 menstrual cycles and followup for the next menstrual cycle. After the completion of the clinical trial, it was found that in Rajapravartini Vati, there was highly significant result in Cramping pain in abdomen, Irritability, Tenderness in Breast, Back pain and Headache, where as Latakaranja Beeja Choorna there is also significant result in Cramping pain in Abdomen, Irritability, Tenderness in Breast, Back Pain, Headache and Vomiting but statistically considering average mean Latakaranja Choorna shows comparatively lesser effective than Rajapravartini Vati. By the statistical results it can be concluded that Rajapravartini Vati has better result when compared to Latakaranja Choorna in the present study.

scholarly journals Development and Cross-Validation of Anthropometric Predictive Equations to Estimate Total Body Fat Percentage in Adult Women in Sri Lanka

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Nirmala Rathnayake ◽  
Gayani Alwis ◽  
Janaka Lenora ◽  
Sarath Lekamwasam
Keyword(s):  
Body Fat ◽  
Cross Validation ◽  
Body Fat Percentage ◽  
Adult Women ◽  
Fat Percentage ◽  
Predictive Equations ◽  
Total Body Fat ◽  
Group A ◽  
Total Body ◽  
Group B

Attempts have been made to estimate body fat using anthropometry, and most of them are country-specific. This study was designed to develop and cross-validate anthropometric predictive equations to estimate the total body fat percentage (TBFP) of Sri Lankan adult women. A cross-sectional study was conducted in Galle, Sri Lanka, with two groups: Group A (group for equation development) and Group B (cross-validation group) (n = 175 each) of randomly selected healthy adult women aged 30–60 years. TBFP (%) was quantified with total body DXA (TBFPDXA). Height (m), weight (kg), and skinfold thickness (SFT, mm) at six sites and circumferences (cm) at five sites were measured. In the first step, four anthropometric equations were developed based on the data obtained from multiple regression analyses (TBFPDXA = dependent variable and anthropometric measurements and age = independent variables) with Group A. They were developed on the basis of circumferences (TBFP1), SFTs (TBFP2), circumferences and SFTs (TBFP3), and highly significant circumferences and SFTs (r ≥ 0.6) (TBFP4). In the second step, the newly developed equations were cross-validated using Group B. Three equations (TBFP1, TBFP2, and TBFP4) showed the agreement with cross-validation criteria. There were no differences between TBFPDXA and TBFP estimated by these equations (p>0.05). They showed higher measurement concordance with TBFPDXA; correlation between measured TBFP with DXA and estimated with TBFP1, TBFP2, and TBFP4, respectively, was 0.80 (R2 = 0.65, SEE = 3.10), 0.83 (R2 = 0.69, SEE = 2.93), and 0.84 (R2 = 0.72, SEE = 2.78). Three anthropometric measurements based on predictive equations were developed and cross-validated to satisfactorily estimate the TBFP in adult women.

Effect of fermented milk containingLactobacillus acidophilusandBifidobacterium longumon plasma lipids of women with normal or moderately elevated cholesterol

2009 ◽  
Vol 76 (4) ◽  
pp. 469-474 ◽  
Author(s):  
Sara Andrade ◽  
Nuno Borges
Keyword(s):  
Plasma Lipids ◽  
Bifidobacterium Longum ◽  
Hdl Cholesterol ◽  
Fermented Milk ◽  
Adult Women ◽  
Double Blind ◽  
Test Product ◽  
Elevated Cholesterol ◽  
Group A ◽  
Group B

This study aimed to evaluate the effect of milk fermented withLactobacillus acidophilus145 andBifidobacterium longumBB536 on plasma lipids in a sample of adult women. A double-blind, placebo controlled, cross-over study (two periods of four weeks each separated by a 1-week washout period) was performed in 34 women, aged between 18 and 65 years. Group A consumed 125 g fermented milk three times a day for the first 4 weeks while group B consumed regular yoghurt under the same conditions. (Groups A and B switched products for the second treatment period). Women taking the test product with a baseline total cholesterol above 190 mg/dl showed a significant reduction in LDL cholesterol. HDL cholesterol was also reduced by the test product. We conclude that the fermented milk may help to reduce LDL levels in hypercholesterolemic adult women.

scholarly journals Preliminary results in anterior cervical discectomy and fusion with the uncovertebral joint fusion cage in a goat model

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Yi-Wei Shen ◽  
Yi Yang ◽  
Hao Liu ◽  
Ting-Kui Wu ◽  
Li-Tai Ma ◽  
...  
Keyword(s):  
Bone Formation ◽  
Histological Analysis ◽  
Ct Scanning ◽  
Micro Ct ◽  
Preliminary Results ◽  
Joint Fusion ◽  
Group A ◽  
Group B ◽  
Fusion Cage ◽  
Uncovertebral Joint

Abstract Objective To preliminarily evaluate the safety and efficacy of the uncovertebral joint fusion cage in a goat model of cervical spine interbody fusion. Methods Twenty-four healthy adult goats were randomly assigned to one of the two following groups: Group A, goats were implanted with an uncovertebral joint fusion cage combined with a local autograft and Group B, goats were implanted with a non-profile cage filled with a local autograft. The goats were prospectively evaluated for 24 weeks and then were sacrificed for evaluation. X-rays, CT and micro-CT scanning, and undecalcified bone histological analysis were used for the evaluation of fusion. Results 75.0% (9/12) of the goats in Group A were evaluated as having fusion at 12 weeks, compared to 41.7% (5/12) in Group B. 83.3% (10/12) of the goats in Group A were evaluated as having fusion at 24 weeks compared to 58.3% (7/12) in Group B. The fusion grading scores in Group A were significantly higher than that in Group B both at 12 weeks and 24 weeks (P < 0.05). Micro-CT scanning and undecalcified bone histological analysis showed that new bone formation can be obviously found in the bilateral uncovertebral joint. The bone volume fraction (BV/ TV) in Group A (23.59 ± 4.43%) was significantly higher than Group B (16.16 ± 4.21%), with P < 0.05. Conclusions Preliminary results of this study demonstrated that uncovertebral joint fusion cage is effective for achieving early bone formation and fusion without increase of serious complications.

Pre-Operative Bone Marrow-Derived Cell Mobilization by G-CSF Enhances Osseointegration of Bone Substitute In Patients Undergoing Surgery with High Tibial Valgus Osteotomy

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 4773-4773
Author(s):  
Antongiulio Marmotti ◽  
Castoldi Filippo ◽  
Rossi Roberto ◽  
Alessia Tron ◽  
Francesco Giacalone ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Bone Substitute ◽  
Statistical Significance ◽  
Bone Graft Substitute ◽  
Host Bone ◽  
Post Surgery ◽  
Ct Evaluation ◽  
Group A ◽  
High Tibial Valgus Osteotomy ◽  
Group B

Abstract Abstract 4773 Introduction. Bone substitutes are widely used to improve bone repair in orthopaedic surgical procedures. Osseointegration is a slow process that takes place both at bone-implant interface and inside the tridimensional structure. The process might benefit from the addition of bone marrow-derived cells (BMC). In order to exploit this possible effects, a study protocol has been designed including preoperative BMC mobilization induced by granulocyte-colony stimulating factor (G-CSF). Aim of the study was to verify feasibility, safety and efficacy of BMC-mobilization in patients undergoing high tibial valgus osteotomy (HTVO). Patients and Methods. Overall, 24 patients undergoing medial open wedge HTVO to treat genu varum were enrolled in a prospective phase II trial. The osteotomy gap was filled by hydroxyapatite and tricalciumphosphate bone graft substitute. Two consecutive cohorts of 12 patients were assigned to receive (GROUP A) or not receive (GROUP B) a daily dose of 10 μ g/kg of G-CSF for 3 consecutive days, with an additional dose 4 hours before surgery. BMC mobilization was monitored by White Blood Cell (WBC) count and flow cytometry analysis of circulating CD34+ cells. All patients underwent a clinical (Lysholm Score and SF-36) and X-ray evaluation preoperatively, and at 1, 3 and 6 months after surgery. Anteroposterior standard radiographs were analysed to compare bone structure of the osteotomy areas. The percentage of integration at the interface between host bone and bone substitute (“host bone-substitute interface”) was estimated by 2 blinded observers. A computed tomography (CT) evaluation of the host bone-substitute interface was performed at 2 months. The osseointegration at the host bone-substitute interface was estimated through a semiquantitative score by 2 blinded observers and through a measure of bone density. Results. Patients of Groups A and B were well balanced in terms of age and clinical presentation. All patients of both groups completed the study. The most common adverse events among patients assigned to G-CSF were mild to moderate bone pain and muscle discomfort, well controlled by oral analgesics. There were no severe adverse events in both Group A and B, all patients are presently alive and well. Mobilization of CD34+ve cells occurred in all patients receiving G-CSF: mean preoperative WBC and CD34+ values were 39,09 × 103/μ l (21,57-51,11) and 131,58/ƒnμ l (29.1 - 404) in Group A, and 6,77 (2,8-12-06) and 7,67/μ l (5,4-12) in Group B, respectively. At the post-surgery clinical evaluation, patients of Group A experienced pain and a slight impairment in overall performance at 1 month assessment, whereas they displayed a slight increase in overall performance at 3 and 6 months compared to Group B. Semi-quantitative radiographic evaluation revealed a higher rate of bone substitute osseointegration in Group A than in Group B at 1, 3 and 6 months post-surgery. Also semiquantitative CT evaluation at 2 months showed an overall improved osseointegration at the host bone-substitute interface in Group A patients. Bone density was measured at the host bone-substitute interface by the Hounsfield score: Group A patients scored lower values at the upper interface compared to Group B, accordingly with advanced stage bone remodelling. The differences between Group A and B on assessment of host bone-substitute interface reached a statistical significance (p< 0,05). Bone mineral density at the host bone-substitute interface as measured with DEXA (Dual-energy X-ray absorptiometry), was lower, although without statistical significance, in Group A than in Group B, again suggesting a more advanced stage of bone remodelling in the treated group compared to controls. Conclusions. G-CSF administration given to induce pre-operative mobilization of bone marrow-derived cells: i. is feasible and safe in patients undergoing orthopaedic surgery; ii. allows the peripheral blood circulation of high numbers of CD34+ve cells; iii. may hasten bone graft substitute integration as suggested by both clinical and radiographical and CT evaluations. The enhanced osseointegration might be the result of a direct activity of G-CSF or of a cellular effect mediated by either hematopoietic or endothelial progenitors mobilized by G-CSF or by the combination of all these factors. Disclosures: No relevant conflicts of interest to declare.

scholarly journals Study of microleakage in dental enamel using nanofillers composite resin restoration with total-etch and self-etch adhesive

2021 ◽  
Vol 5 (1) ◽  
pp. 12-18
Author(s):  
Iin Sundari ◽  
Viona Diansari ◽  
Niska Darlianti
Keyword(s):  
Composite Resin ◽  
Average Distance ◽  
Dental Enamel ◽  
Single Bond ◽  
Fifth Generation ◽  
Nail Polish ◽  
Group A ◽  
Composite Resin Restoration ◽  
Group B ◽  
Self Etch

Microleakage is a poor marginal adaptation of the restoration, often found between cavity and restoration material. One of the reasons is the shrinkage during the composite resin during polymerization, causing the restoration’s adaption disturbed. Application of adhesive material on the cavity affects microleakage at the margin restoration and increases the adaptation between cavity and restoration material. This research aims to determine microleakage in dental enamel using nanofiller composite resin restoration with fifth-generation total-etch adhesive and eight-generation self-etch adhesive. This research used 16 specimens premolars, which were prepared cavity Class I G.V. Black and divided into two groups (group A and B). Group A used nanofiller composite resin FiltekTM Z350 + fifth-generation total-etch Adper Single Bond 2 (n=8), group B used nanofiller composite resin Filtek TM  Z350 + eight-generation self-etch Universal Single Bond Adper (n=8). The specimen isolated  using nail polish except in the work area.,then immersed in methylene blue 1% at 25°C (for 24 hours). After that, all specimens were washed and cut longitudinally. The results were observed using a Stereomicroscope and Scanning Electron Microscope (SEM). The observation’s results showed that the amount number of microleakage in group A (75%) less than in group B (100%), while the non-parametric statistic test using the Mann Whitney showed no significant differences (p0.143). Based on SEM images, the average distance between enamel and composite resin with total-etch adhesive was 1.40 ± 0.007µm, and 1.84 ± 0.509 µm for resin composite with self-etch adhesive. This research concluded that microleakage using nanofiller composite with the fifth-generation total-etch adhesive was smaller than nanofiller composite resin with the eighth -generation self-etch adhesive.KEYWORDS: Adhesive system, nanofillers composite resin, microleakage, enamel

scholarly journals Optimal Cutoff Values for Anthropometric Adiposity Measures of Sri Lankan Adult Women

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Nirmala Rathnayake ◽  
Gayani Alwis ◽  
Janaka Lenora ◽  
Sarath Lekamwasam
Keyword(s):  
Community Dwelling ◽  
World Health ◽  
Accurate Estimation ◽  
Sri Lankan ◽  
Adult Women ◽  
Optimal Cutoff ◽  
Cutoff Values ◽  
Prevalence Of Obesity ◽  
Group A ◽  
Group B

Anthropometric adiposity measures (AAMs) such as body mass index (BMI), waist circumference (WC), and waist-to-hip ratio (WHR) are used to evaluate obesity status. Country-specific cutoff values of AAMs would provide more accurate estimation of obesity prevalence. This cross-sectional study was designed to determine the optimal cutoff values for AAMs, BMI, WC, hip circumference (HC), and WHR, of Sri Lankan adult women. The study was conducted in Galle, Sri Lanka, with 350 healthy community-dwelling middle-aged women aged 30–60 years, divided into two groups (Group A, n = 175 and Group B, n = 175). Total body fat percentage (TBFP) (kg) was measured with DXA. Body weight (kg), height (m), and WC and HC (cm) were measured. BMI (kg/m2) and WHR were calculated. Optimal cutoff values were determined by area under curve (AUC) in Receiver-Operating Characteristic (ROC) curve analysis using TBFP as the criterion at the TBFP level of 33% and 35% using the women in Group A. Then, the prevalence of obesity was determined in Group B while comparing the prevalence based on the cutoff values recommended by the World Health Organization (WHO) for Asians and the newly developed cutoff values for Sri Lankan women. Optimal cutoff values of AAMs which correspond to TBFP 33% are BMI, 24.5 kg/m2; WC, 80 cm; HC, 95 cm; and WHR, 0.83. TBFP 35% corresponds to the optimal cutoff values of BMI, 25.0 kg/m2; WC, 85 cm; HC, 100 cm; and WHR, 0.83. Prevalence of obesity (number, %) according to the WHO and newly defined cutoff values that correspond to TBFP 33% and 35% were as follows: BMI = 83 (47.4%), 98 (56.0%), 83 (47.4%); WC = 106 (60.6%), 106 (60.6%), 72 (41.1%); and WHR = 140 (80.0%), 106 (60.6%), 106 (60.6%). The observed cutoff values of BMI and WC in this study were within the ranges of those described by the WHO for Asian populations which correspond to the 33% and 35% TBFP levels, respectively. However, the WHR cutoff value of WHO (Asians) is lower when compared to the newly determined value for Sri Lankan females while overestimating the prevalence. More studies are needed to confirm these values before clinical use.

Age-Related Cerebrovascular Disease Alters the Symptomatic Course of Migraine

Cephalalgia ◽  
1998 ◽  
Vol 18 (4) ◽  
pp. 202-208 ◽  
Author(s):  
JS Meyer ◽  
Y Terayama ◽  
S Konno ◽  
GM Margishvili ◽  
H Akiyama ◽  
...  
Keyword(s):  
Late Life ◽  
Ct Scanning ◽  
Cerebrovascular Diseases ◽  
Migraine Headaches ◽  
Clinical Observations ◽  
Age Related ◽  
Before And After ◽  
Group A ◽  
Group B ◽  
Cerebral Vasodilator

Migraine headaches usually decrease in frequency and severity and often cease during advancing age. Occasionally, migraineurs report late-life migrainous accompaniments, i.e., auras without headache, particularly when typical migraine attacks terminate or diminish following major or minor strokes, at which time the auras may become atypical. Clinical observations such as these suggest that degenerative cerebrovascular changes accompanying aging may modify the course of migraine headaches particularly those with aura. To test this hypothesis, we quantitated age-related changes in cerebral vasodilator capacitance by measuring local cerebral blood flow utilizing xenon contrast computed tomography (CT) scanning before and after oral administration of the pharmacological cerebral vasodilator, acetazolamide (Diamox®). Measurements were compared among 27 normal volunteers without headache (aged 24–94 years; mean age 61.1 ± 17.6) and 37 carefully categorized groups of migraine patients (aged 27–83 years; mean age 59.4 ±12.4). The normals comprised Group A. Migraineurs were divided into two subgroups: Group B consisted of 27 migraineurs with and without aura who continued to suffer from incapacitating and frequent headaches and Group C consisted of 10 migraineurs who no longer suffered from severe and frequent headaches, two of whom still complained of atypical auras of the “late-life migrainous accompaniments” type. Cerebral vasodilator capacitance significantly declined with advancing age among normals and the two groups of migraineurs, confirming the development of age-related cerebrovascular diseases. Global CBF increases after Diamox® in Group B (with persistent and severe migraine), were significantly greater compared with normals without headache, and with Group C consisting of migraineurs whose headaches had decreased, subsided, or become replaced by late-life migrainous accompaniments (Group C). Results establish that cerebrovasodilator capacitance declines with advancing age, probably due to progressive cerebral atherosclerosis, since these declines were accentuated by risk factors for stroke, particularly TIAs or documented lacunar infarcts by CT. Progressive impairments of cerebral vasodilator capacitance among migraineurs were associated with: (i) reductions in frequency and severity of migrainous cephalalgia and (ii) appearance of late-life migrainous accompaniments.

scholarly journals Evaluation of porous vitreous carbon or silicon implants by radiology in rat's skull

2008 ◽  
Vol 23 (3) ◽  
pp. 287-293
Author(s):  
Marcelo Paulo Vaccari-Mazzetti ◽  
Dulce Maria Fonseca Soares Martins ◽  
Paulo de Oliveira Gomes ◽  
José Luiz Martins ◽  
Paulo Fabiani ◽  
...  
Keyword(s):  
Vitreous Carbon ◽  
Craniofacial Skeleton ◽  
Ct Evaluation ◽  
Group A ◽  
Group B ◽  
Ct Studies ◽  
Non Parametric

PURPOSE: Evaluate by CT the use of porous vitreous carbon (PVC) and silicon (S) implants as the replacement bone in the craniofacial skeleton of rats. METHODS: 40 rats divided in: Group A (n=20) PVC submitted to the implant of a fragment in skull. After the euthanasia, the animals were divided into two subgroups: A I: 10 animals, studied in the 7th postoperative day (P.O) and AII: 10 animals, studied in the 28th P.O. In group B, S, 20 rats were submitted to S implant in the skull. All other steps were identical to group A, with designation of subgroups BI and BII. CT with beams in axial cuts of 1 mm thickness to obtain 3-D information It was used Hounsfield scale for evaluate the radio density of the implant. They were used non parametric tests to analyze the results. RESULTS: The 7th PO boss remained in the two groups, but for 28th PO, observed reduction in the volume of the implant in Group A, not observed in group B. CT studies noticed different radio densities around all of S prostheses (pseudo-capsule), that don't appeared in CPV implants. The S has remained unchanged in the CT, but the CPV has had a modification in its radio density (p<0,05), in all implants. CONCLUSION: In CT evaluation the implants of CPV have greater deformation that the S, which makes them not suitable for replacement of membranous bone in the rat skull.

scholarly journals Therapeutic Evaluation of Computed Tomography Findings for Efficacy of Prone Ventilation in Acute Respiratory Distress Syndrome Patients with Abdominal Surgery

2020 ◽  
Vol 6 (1) ◽  
pp. 32-40 ◽  
Author(s):  
Masayuki Akatsuka ◽  
Hiroomi Tatsumi ◽  
Naoya Yama ◽  
Yoshiki Masuda
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Abdominal Surgery ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Ct Scan ◽  
Distress Syndrome ◽  
Ground Glass Opacity ◽  
Ct Scanning ◽  
Group A ◽  
Group B

AbstractIntroductionIn Acute Respiratory Distress Syndrome (ARDS), the heterogeneity of lung lesions results in a mis-match between ventilation and perfusion, leading to the development of hypoxia. The study aimed to examine the association between computed tomographic (CT scan) lung findings in patients with ARDS after abdominal surgery and improved hypoxia and mortality after prone ventilation.Material and MethodsA single site, retrospective observational study was performed at the Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan, between 1st January 2004 and 31st October 2018. Patients were allocated to one of two groups after CT scanning according to the presence of ground-glass opacity (GGO) or alveolar shadow with predominantly dorsal lung atelectasis (DLA) on lung CT scan images. Also, Patients were divided into a prone ventilation group and a supine ventilation group when the treatment for ARDS was started.ResultsWe analyzed data for fifty-one patients with ARDS following abdominal surgery. CT scans confirmed GGO in five patients in the Group A and in nine patients in the Group B, and DLA in 17 patients in the Group A and nine patients in the Group B. Both GGO and DLA were present in two patients in the Group A and nine patients in the Group B. Prone ventilation significantly improved patients’ impaired ratio of arterial partial pressure of oxygen to fraction of inspired oxygen from 12 h after prone positioning compared with that in the supine position. Weaning from mechanical ventilation occurred significantly earlier in the Group A with DLA vs the Group B with DLA (P < 0.001). Twenty-eight-day mortality was significantly lower for the Group A with DLA vs the Group B with DLA (P = 0.035).ConclusionsThese results suggest that prone ventilation could be effective for treating patients with ARDS as showing the DLA.

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