scholarly journals Acacia decurrens di Sebagian Kawasan Taman Nasional Gunung Merapi Yogyakarta

2019 ◽  
Vol 5 (1) ◽  
pp. 38
Author(s):  
Sutomo Sutomo
Keyword(s):  
Multidimensional Scaling ◽  
National Park ◽  
Diversity Index ◽  
Significant Negative Correlation ◽  
Tree Level ◽  
Sampling Location ◽  
Alien Plant ◽  
Metric Multidimensional Scaling ◽  
Spearman's Rho ◽  
Spearman’S Rho

<p><em>Abstrak</em><strong>- </strong><strong><em>Acacia decurrens</em></strong><strong>, adalah jenis asing yang mulai menjadi perhatian sejak dominasinya di lahan bekas erupsi Gunung Merapi tahun 2006. Tujuan dari kegiatan studi ini adalah untuk mendeskripsikan secara kuantitatif Ekologi <em>Acacia decurrens</em>, hubungannya dengan beberapa faktor lingkungan serta potensi keinvasifannya jika dikorelasikan dengan <em>diversity index</em>. Analisis vegetasi dilakukan di empat wilayah Taman Nasional Gunung Merapi (TNGM) yaitu Kalikining, Kaliadem, Plawangan dan Pranajiwa. Ordinasi menggunakan metode <em>Non metric multidimensional scaling</em> (NMDS) serta <em>Canonical Corespondence</em> (CCA) serta korelasi <em>bivariate</em> Spearman dilakukan dalam analisis data. Hasil analisis NMDS (2D stress = 0,14) memperlihatkan bahwa daerah terbuka akibat erupsi di Kaliadem kini didominasi oleh jenis <em>A. decurrens</em>. Hasil analisis juga menunjukkan adanya korelasi negatif yang signifikan (Spearman’s rho = 0,6) antara kelimpahan jenis <em>A. decurrens</em> dengan tingkat keanekaragaman jenis di dalam lokasi sampling. Dari hasil CCA, <em>A. decurrens</em>, pada tahap semai, nampak hidup berdampingan dengan jenis groundcover lainnya seperti <em>Alangium javanicum</em>, dan Araliaceae. Namun pada fase pohonnya, jenis ini cenderung membentuk tegakan murni. <em>Acacia decurrens</em> tingkat pohon nampaknya lebih memilih sites dengan tingkat pH yang lebih rendah sedangkan <em>A. decurrens</em> tingkat semai lebih banyak ditemui pada site-site ber pH lebih tinggi. <em>A. decurrens</em> berpotensi menjadi gulma di TNGM.</strong></p><p><em>Abstract - </em><strong>Acacia decurrens, is an alien plant species that has begun to be a concern since its dominance in the former eruption of Mount Merapi in 2006. The purpose of this study is to describe quantitatively the Ecology of Acacia decurrens, its relation to several environmental factors and their invasive potential if correlated with diversity index. Vegetation analysis was carried out in four areas of Mount Merapi National Park, namely Kalikining, Kaliadem, Plawangan and Pranajiwa. Ordination using Non metric multidimensional scaling (NMDS) and Canonical Correspondence (CCA) methods and Spearman bivariate correlations were carried out in data analysis. NMDS analysis (2D stress = 0.14) shows that open areas due to eruptions in Kaliadem are now dominated by A. decurrens. The results of the analysis also showed a significant negative correlation (Spearman’s rho = 0.6) between the abundance of A. decurrens species and the level of species diversity in the sampling location. From the results of CCA, A. decurrens, at the seedling stage, appears to coexist with other types of ground cover such as Alangium javanicum, and Araliaceae. But in the tree phase, this type tends to form pure stands and only occasionally appear alive can it coexist with other Fabaceae species such as Albizia lopantha. Acacia decurrens tree level seems to prefer sites with lower pH levels while A. decurrens seedling levels are more common at higher pH sites. A. decurrens have the potential to become weeds in the Mount Merapi National Park.</strong></p><p><strong><em>Keywords</em></strong>-<em>Autekologi, Faktor Lingkungan,</em><em> IAS,</em><em> Risk Assesment</em></p>

scholarly journals Ekologi dan Potensi Invasif Acacia decurrens di Sebagian Kawasan Taman Nasional Gunung Merapi Yogyakarta

2019 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Sutomo Sutomo
Keyword(s):  
Species Diversity ◽  
National Park ◽  
Ground Cover ◽  
Significant Negative Correlation ◽  
Tree Level ◽  
Sampling Location ◽  
Invasive Potential ◽  
Merapi Volcano ◽  
Bivariate Correlation ◽  
Nmds Analysis

Acacia decurrens, originally from Australia, is a woody plant that has become a concern in the erupted areas of Merapi volcano in 2006. The purpose of this study was to quantitatively describe the ecology of Acacia decurrens, and its invasive potential. Vegetation analysis was carried out in four areas of Mount Merapi National Park (TNGM), namely Kalikuning, Kaliadem, Plawangan and Pranajiwa. Ordination using the Non Metric Multidimensional Scaling (NMDS) method and Canonical Correspondence (CCA) and Spearman's bivariate correlation were carried out in data analysis. The results of NMDS analysis (2D stress = 0.14) showed that open areas due to eruption in Kaliadem are now dominated by A. decurrens. The results of the analysis also showed a significant negative correlation (Spearman rho = 0.6) between the abundance of A. decurrens and the level of species diversity in the sampling location. From the results of CCA, A. decurrens in the seedling stage appeared to coexist with other types of ground cover such as Alangium javanicum and Araliaceae. But in the tree phase, this species tended to form pure stands and only occasionally appeared to live side by side with other types of Fabaceae such as Albizia lopantha. Tree-level A. decurrens seemed to prefer sites with lower pH levels while A. decurrens seedling levels were more commonly found in sites with higher pH. Acacia decurrens have the potential to become a weed in TNGM due to its dominant distribution and tendency to decrease the level of species diversity in TNGM.

scholarly journals Vegetation Analysis of the Secondary Forest Area of ​​Mount Merapi National Park

2019 ◽  
Vol 4 (1) ◽  
pp. 50-57
Author(s):  
Haryadi Haryadi ◽  
Sunarto Sunarto ◽  
Sugiyarto Sugiyarto
Keyword(s):  
Forest Ecosystem ◽  
National Park ◽  
Secondary Forest ◽  
Diversity Index ◽  
Forest Area ◽  
Tree Level ◽  
Main Function ◽  
Vegetation Analysis ◽  
Severe Damage ◽  
Forest Plants

 Mount Merapi National Park (MMNP) is a natural con-servation area with the main function of preserving the diversity of plants, animals and their ecosystems. In 2010, Mount Merapi suffered a large eruption which caused damage to the forest ecosystem inside. One of the locations that suffered severe damage was at Cangkrin-gan Resort. After the eruption, the affected vegetation began to grow again. The purpose of this study is to monitor and determine the di-versity of secondary forest plants in the MMNP area. The method used was a method of path and use a point-intercept transect as the sam-pling unit. The results showed that after the eruption, the Acacia de-curens dominated at each level starting from sapling, poles and trees. Based on the results of the study showed that the eruption of Mount Merapi that occurred in 2010 resulted in a change in vegetation struc-ture in the area with the Shannon-Weiner diversity index which is still low, amounting to 1.86 for seedling, 1.32 for the sapling and 0.22 for poles. At the tree level 100% is still dominated by Acacia decurens.  

scholarly journals Kebersyukuran dan kesepian pada lansia yang menjadi janda/duda

2019 ◽  
Vol 7 (2) ◽  
pp. 146
Author(s):  
Resnia Novitasari ◽  
Diah Aulia
Keyword(s):  
Sampling Technique ◽  
The Elderly ◽  
Significant Negative Correlation ◽  
Survey Study ◽  
Psychological Issues ◽  
Purposive Sampling ◽  
Loneliness Scale ◽  
Spearman's Rho ◽  
Spearman’S Rho

Abstrak. Kesepian merupakan permasalahan psikologis yang berdampak negatif bagi perkembangan lansia. Penelitian ini merupakan penelitian survei yang bertujuan untuk menelaah peran dari kebersyukuran terhadap kesepian pada lansia yang telah menjanda dan menduda. Penelitian ini melibatkan 82 orang lansia yang dipilih menggunakan teknik purposive sampling dengan rentang usia 60-90 tahun. Alat ukur yang digunakan dalam penelitian ini adalah Gratitude Questionnaire-Six Item Form (GQ-6) dan UCLA Loneliness Scale (Version 3). Analisis data menggunakan uji korelasi Spearman’s Rho menunjukkan adanya korelasi negatif yang signifikan antara kebersyukuran dan kesepian. Semakin tinggi tingkat kebersyukuran pada lansia maka semakin rendah kesepian yang dirasakan, begitu pula sebaliknya. Dengan demikian, hipotesis dalam penelitian ini diterima.Kata kunci: duda, janda, kebersyukuran, kesepian, lansiaAbstract. Loneliness is one of the psychological issues that impacted negatively on elderly development. This study is a survey study that examines the role of gratitude towards loneliness in the elderly who have been widowed. This study proved 82 elderly people obtained from a purposive sampling technique with the age ranged from 60-90 years. The measuring instrument used in this study is the Gratitude Questionnaire-Six Item Form (GQ-6) and the UCLA Loneliness Scale (Version 3). Data analysis was tested by Spearman’s rho correlation test showed a significant negative correlation between gratitude and loneliness. The higher the gratitude, the lower the loneliness for the elderly, and vice versa. Thus, the hypothesis in this study was accepted.Keywords: gratitude, loneliness, elderly, widowed Abstract. Loneliness is one of the psychological issues that impacted negatively on elderly development. This study is a survey study that examines the role of gratitude towards loneliness in the elderly who have been widowed. This study proved 82 elderly people obtained from a purposive sampling technique with the age ranged from 60-90 years. The measuring instrument used in this study is the Gratitude Questionnaire-Six Item Form (GQ-6) and the UCLA Loneliness Scale (Version 3). Data analysis was tested by Spearman’s rho correlation test showed a significant negative correlation between gratitude and loneliness. The higher the gratitude, the lower the loneliness for the elderly, and vice versa. Thus, the hypothesis in this study was accepted.

Catastrophizing and Depression Are Associated With a Poorer Quality Of Life In Pediatric Patients With Sickle Cell Disease

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 1706-1706
Author(s):  
Nitya Bakshi ◽  
Ines Lukombo ◽  
Helen Shnol ◽  
Nonita Mittal ◽  
Saumya Vinod Joshi ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Negative Correlation ◽  
Pain Catastrophizing ◽  
Significant Negative Correlation ◽  
Pain Catastrophizing Scale ◽  
Pain Coping ◽  
Pediatric Pain ◽  
Spearman's Rho ◽  
Spearman’S Rho

Abstract Background Depression and catastrophizing are critically important variables in understanding the experience of pain in patients with several types of chronic pain. In the PiSCES study, negative correlations were observed between high catastrophizing scores with greater depression and lower quality of life in adult patients with sickle cell disease (SCD). These psychological covariates have not been studied extensively in pediatric patients with SCD. Methods Patients entering a study of quantitative sensory testing (QST) completed baseline psychological covariates which included PROMIS measures of pain intensity, interference, anxiety, depression, sleep, fatigue and peer relationships. Participants also completed the Pain Catastrophizing Scale (PCS-child version, ©Sullivan MJ), Child Somatization Inventory (Walker L et al), Pediatric Pain Coping Inventory*(Varni JW et al) as well as Peds QL Generic*(Varni JW et al) and SCD specific*(Panepinto JA et al) measures of Quality of life. We performed a correlational analysis on psychological covariates with quality of life. Results A total of 24 patients were included in the study, however depression scores were missing in 2 patients and catastrophizing scores were missing in one patient.14 patients (58.3 %) had HbSS, 7 patients (29.1%) had HbSC and 3 patients (12.5%) had HbS-beta+ thalassemia. In the past 3 years prior to the study patients with HbSS experienced a median of 4 (IQR: 3-5), HbSC a median of 3(IQR: 0-9) and HbS-beta+thal a median of 7 (IQR: 3-13) vaso-occlusive crises (VOC). The median hemoglobin level was 10.4 (IQR: 8.8-11.1) for patients with HbSS, 13.3 (IQR: 11.3-13.5) for patients with HbSC and 12.2 (IQR: 11.6-13.3) for patients with HbS-beta+ thalassemia. The median score on the Pain Catastrophizing scale was 29 (IQR: 13-35). The median total score on the Peds QL generic QoL scale was 74.4 (IQR: 57.05-87.01) and the SCD specific QoL was 61.9 (IQR: 50.65-77). The median depression score was 44.35 (IQR: 31.8-53.8) and median anxiety score was 46.15 (IQR: 35-51.8). There was a significant negative correlation between catastrophizing on PCS and the total Peds QL SCD specific (Spearman’s rho= -0.57, p= 0.0043) and generic (Spearman’s rho= -0.41, p=0.047) quality of life scores. A similar significantly negative correlation was seen between the catastrophizing dimension score on the Pediatric Pain Coping Inventory with total scores on the Peds QL SCD specific (Spearman’s rho= -0.65, p=0.0006) and generic (Spearman’s rho= -0.59, p=0.002) quality of life scores. There was also a significant negative correlation between depression (on the PROMIS depression module) with SCD specific (Spearman’s rho= -0.58, p= 0.0046) and generic (Spearman’s rho=-0.71, p=0.0002) quality of life scores. There was no correlation between catastrophizing (PedsQL Pediatric Pain Coping Inventory- Catastrophizing dimension or Pain Catastrophizing Scale) and healthcare utilization as measured by VOC requiring Emergency room visit or hospital admission over a 6 month, one year or three year period. Conclusions Children with SCD have a high median catastrophizing score. Catastrophizing and depression scales have a significant negative correlation with quality of life scores. Thus, pain, depression, and catastrophizing might all be important therapeutic targets in the comprehensive management of SCD in children. *PedsQL™ contact information and permission to use: Mapi Research Trust, Lyon, France. E-mail: [email protected] – Internet: www.Mapi-trust.org andhttp://www.pedsql.org/index.html Disclosures: No relevant conflicts of interest to declare.

scholarly journals Tree species diversity on ebony habitat with different degradation levels in Sulawesi

2021 ◽  
Vol 918 (1) ◽  
pp. 012052
Author(s):  
K F Fatlan ◽  
P Pamoengkas ◽  
M Majiidu ◽  
I Z Siregar
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
National Park ◽  
Forest Canopy ◽  
Nature Reserve ◽  
Diversity Index ◽  
Population Decline ◽  
Tree Level ◽  
Canopy Layer ◽  
Natural Habitats

Abstract Ebony (Diospyros celebica Bakh.) is endemic species to Sulawesi that is experiencing population decline. It is known that population size is an important element for the dynamics of natural forests through changes in vegetation structure and composition that need to be monitored. This study aims to analyze the species diversity in natural habitats of genetically diverse ebony, namely: i) Bantimurung National Park (BB), ii) Cani Sirenreng Nature Park (CS), iii) Farhumpenai Nature Reserve (FP), and iv) Pangi Binangga Nature Reserve (PB). Data collection was carried out based on a modified transect line and plot with 20 m x 100 m in size. The results showed that as many as 28 families were identified, consisting of 44 species at the tree level, 37 species at the pole level, 39 species at the sapling level, and 31 species at the seedling level, respectively. The composition of vegetation in Babul National Park consists of 32 species, Cani Sirenreng consists of 18 species, Farhumpenai consists of 19 species, and Pangi Binanngga consists of 19 species. The species composition was dominated by Diospyros celebica Bakh., Dracontomelon dao (Blanco) Merr. & Rolfe, Canangium odoratum, Ficus benjamina L., Pterospermum celebicum Miq., Kleinhovia hospita L. and Vitex cofassus Reinw. Ex Blume. The diversity index (H’-Index) of tree species in BB, CS, FP, and PB were 0.82, 1.13, 1.03, and 1.60, respectively. The Important Value Index (INP-Index) of ebony in BB, CS, FP and PB were 18.01%, 74.1%, 60.13% and 113.5%, respectively. The structure of the forest canopy layer in BB and FP consists of three layers of canopy, while CS and PB consist of two layers of canopy.

scholarly journals Floristic composition and diversity at Keruing (Dipterocarpus spp.) habitat in Tangkahan, Gunung Leuser National Park, Indonesia

2021 ◽  
Vol 22 (10) ◽  
Author(s):  
Arida Susilowati ◽  
HENTI HENDALASTUTI RACHMAT ◽  
DENI ELFIATI ◽  
ASEP HIDAYAT ◽  
ADHI NURUL HADI ◽  
...  
Keyword(s):  
National Park ◽  
Diversity Index ◽  
Floristic Composition ◽  
Initial Step ◽  
Ex Situ ◽  
Tree Level ◽  
Line Transect ◽  
Growth Stages ◽  
Active Monitoring ◽  
A Value

Abstract. Susilowati A, Rachmat HH, Elfiati D, Hidayat A, Hadi AN, Zaitunah A, Nainggolan D, Ginting IM. 2021. Floristic composition and diversity at Keruing (Dipterocarpus spp.) habitat in Tangkahan, Gunung Leuser National Park, Indonesia. Biodiversitas 22: 4448-4456. Dipterocarpus spp., or locally known as Keruing, is a wood-producing tree and has high economic value. Keruing also produces derivative products in oil and oleoresin, which are widely used as raw materials for medicines and perfumes. Keruing natural population has been severely declining caused by habitat alteration and also over exploitation. Therefore, information on the composition and diversity of the floristic community at their habitat is important as an initial step in designing conservation actions. This study aims to determine the floristic composition and diversity at the keruing habitat in the Tangkahan area, Gunung Leuser National Park (Gunung Leuser NP). A line transect has been used to establish a purposive sampling in particular forest areas where the population of the keruing is known to grow naturally. Four line transects, each with five nested plots, totaling 110 plots, were established to gather data at four growth stages. The results found 47 species at the seedling stage, 43 species at the sapling stage, 48 species at the pole stage and 65 species at the tree stage. There were three species of keruing in the research location, namely Dipterocarpus haseltii, Dipterocarpus costulatus and Dipterocarpus elongatus Korth with low IVI values ??at each stage. D. haseltii was only found at the seedling, pole and tree stage with IVI values ??of 0.32, 0.30, and 6.90, respectively. D. costulatus was only found at the tree level with an IVI value of 3.43, while D. elongatus found at the sapling and tree stage with an IVI of 0.30 and 3.42, respectively. The diversity index in the research location was in the medium category at the seedling, sapling, and pole levels with a value of 2.96, 2.86, and 2.92, respectively and was classified as high at the tree level with a value of 3.18. The evenness index (E') in all growth stages is high or evenly distributed with the value of E' > 0.75. The species diversity in research location classified into medium-high category although in each stage showing dynamic on species domination. Disturbed habitat due to illegal logging and land conversion caused a problem on keruing regeneration. Conservation efforts, including active monitoring keruing occurrence, ex-situ conservation, and artificial regeneration, are needed to avoid keruing from extinction. 

scholarly journals Komposisi Jenis dan Struktur Tegakan Berbagai Formasi Hutan di Resort Bama Taman Nasional Baluran, Jawa Timur

2019 ◽  
Vol 10 (2) ◽  
pp. 75-82
Author(s):  
Istomo Istomo ◽  
Wahyu Hartarto
Keyword(s):  
Mangrove Forest ◽  
National Park ◽  
Diversity Index ◽  
Tree Level ◽  
Coastal Forests ◽  
Lowland Forest ◽  
Composition And Structure ◽  
Density Values ◽  
Composition Structure ◽  
Broad Condition

Baluran National Park is a oldes national park and unique in terms of existing ecosystems. One area that is considered to be of broad condition is Bama Resort. Baluran National Park has various forest formations including mangrove formations, coastal forests, savana forests, seasonal forests, rainforests, and plain forests. This study aims to examine the composition and structure of each forest formation in Baluran National Park in East Java. The number of plant species found in mangrove forest formations were 6 species, 40 species of coastal forest, 37 species of savana forest, 44 species of rain forest, 28 species of lowland forest, and 50 species of seasonal forest formations. The highest density values were in savana forest formation at the seedlings and understorey level of 132445 ind / ha while the density at the tree level was found in the mangrove forest formation of 346 ind / ha. The diversity index of seedlings and understorey species is medium (2 <H '<3) while for other growth rates it is classified as medium and low (0 <H' <3). The value of community similarity between overall forest formations is categorized as low (values below 50%.). Overall header stratification in each formation is in strata c. Key words: Forest Formation, Species Composition, Structure, Baluran National Park

scholarly journals Kajian Ekologi Permudaan Saninten (Castanopsis argentea (Bl.) A.DC.) di Taman Nasional Gunung Gede Pangrango, Jawa Barat

2016 ◽  
Vol 13 (1) ◽  
pp. 34 ◽  
Author(s):  
N. M. Heriyanto ◽  
Reny Sawitri ◽  
Didi Subandinata
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Density Distribution ◽  
National Park ◽  
Diversity Index ◽  
Seedling Stage ◽  
Tree Level ◽  
Species Diversity Index ◽  
Dominance Index

<p>The study of population and distribution of saninten (Castanopsis argentea (Bl.) A.DC) seedling was conducted in August 2003 at block Pasarean, Cibodas Resort, Gede Pangrango National Park. The square inventory of 20 plots sizing at 2 x 2 m for seedling level and 20 x 20 m for tree level. Regeneration analysis were laid down at 1,300, 1,400, 1,500, 1,600, and 1,700 m asl. The research showed that the species composition of seedling communities at 1,300 and 1,600 m asl was kileho (Saurauia pendula Bl.), at 1,400 and 1,700 m asl was huru (Litsea sp.) and at 1,500 m asl was nangsi (Villebrunea sp.). The highest density distribution of tree and seedling stage of saninten were at 1,400 m asl which were 18 trees/ha and 833 seedlings/ha with dominance index of 0.06. While the highest of species diversity index occured at 1,300 m asl about 3.34 with 35 invidual species. More over, based on altitudinal sites, the value of index similarity was occured between 1,600 m asl and 1,700 m asl was 65.24%.</p><p> </p><p><strong>Abstrak</strong></p><p>Kajian populasi dan penyebaran anakan saninten (Castanopsis argentea (Bl.) A.DC) dilakukan pada Agustus 2003 di blok Pasarean, Resort Cibodas, Taman Nasional Gunung Gede Pangrango. Pengumpulan data dilakukan dengan menggunakan metode kuadrat bujur sangkar 2 x 2 m, sedangkan untuk tingkat pohon hanya jenis saninten. Ukuran petak yang digunakan 20 x 20 m. Petakan untuk semai terletak di salah satu sudut dalam petak untuk pengukuran pohon. Penelitian dilakukan pada ketinggian tempat 1.300, 1.400, 1.500, 1.600, dan 1.700 m, dpl. Petakan dibuat pada setiap ketinggian tempat sebanyak 20 petak. Hasil penelitian menunjukkan bahwa jenis yang mendominasi komunitas tumbuhan tingkat semai adalah kileho (Saurauia pendula Bl.) yang mendominasi pada ketinggian 1.300 dan 1.600 m dpl, huru (Litsea sp.) mendominasi semai pada ketinggian 1.400 dan 1.700 m dpl, dan nangsi (Villebrunea sp.) mendominasi semai pada ketinggian 1.500 m dpl. Penyebaran terluas pohon dan semai saninten pada ketinggian tempat 1.400 m dpl, yaitu 18 pohon dan 833 anakan/ha. Nilai dominansi tertinggi tingkat semai dimiliki oleh ketinggian tempat 1.400 m dpl dengan indeks dominansi 0,06. Nilai indeks keanekaragaman jenis tertinggi dimiliki oleh ketinggian tempat 1.300 m dpl yang mempunyai keanekaragaman jenis sebesar 3,34 dengan 37 jenis individu. Nilai kesamaan komunitas (IS) tertinggi komunitas semai terdapat antara ketinggian tempat 1.600 dan 1.700 m dpl sebesar 65,24%.</p>

On Multimodality of the SSTRESS Criterion for Metric Multidimensional Scaling

Informatica ◽  
2003 ◽  
Vol 14 (1) ◽  
pp. 121-130 ◽  
Author(s):  
Antanas Žilinskas ◽  
Aurelija Podlipskytė
Keyword(s):  
Multidimensional Scaling ◽  
Metric Multidimensional Scaling

scholarly journals POS0584 ULTRASONOGRAPHY OF THE MEDIAN NERVE IN PATIENTS WITH RHEUMATOID ARTHRITIS UNDER SUSPICION OF CARPAL TUNNEL SYNDROME

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 525.1-525
Author(s):  
S. Tsiami ◽  
E. Ntasiou ◽  
C. Krogias ◽  
R. Gold ◽  
J. Braun ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Nerve Conduction Velocity ◽  
Sectional Area ◽  
Cross Sectional ◽  
Spearman's Rho ◽  
Spearman’S Rho ◽  
Tunnel Syndrome

Background:Carpal tunnel syndrome (CTS) is the most common nerve compression syndrome and a common extra-articular manifestation of rheumatoid arthritis (RA). Different causes of CTS are known, among them inflammatory and non-inflammatory pathologies. Electroneurography (ENG) of the median nerve, the method of choice to diagnose CTS, measures impairment of nerve conduction velocity without explaining its underlying cause. However, because the electrical stimulation is often not well tolerated, ENG results may come out inconclusive. Using greyscale ultrasonography (GS-US) provides anatomic information including a structural representation of the carpal tunnel.Objectives:To investigate the performance of nerve GS-US in the diagnosis of CTS in patients with RA.Methods:Consecutive patients with active RA under suspicion of CTS presenting to a large rheumatologic center were included. Both hands were examined by an experienced neurologist including ENG and a GS-US (ML linear probe with 6-15 Hz) of the median nerve. An established grading system for ENG (1), and an established system for GS-US based on cut-offs for the nerve cross sectional area (CSA) [mild: 0,11-0,13cm2, moderate: 0,14-0,15 cm2, severe: > 0,15 cm2 CTS (2)] were used. In addition, the Boston Carpal Tunnel Syndrome Questionnaire (BCTSQ) was used to assess CTS symptoms (3).Results:Both hands of 58 patients with active RA (n=116) and clinical suspicion of CTS (in 38 cases bilaterally) were included. After clinical examination, CTS was suspicious in 96 hands (82.8%), and 59 of all hands had a final diagnosis of CTS (50.9%). Of the latter, 43 hands (72.9%) had a positive ENG and 16 (27.1%) a positive GS-US finding only, while 30 hands (50.8%) were positive in both examinations.There was a good correlation of the cross-sectional area (CSA) as well as the CSA-ratio to the ENG findings: the larger the CSA, the more severe was the CTS as assessed by ENG (Spearman’s rho=0.554; p<0.001). The more severe the GS-US findings of CTS were, the more definite were the distal motor latency (Spearman’s rho=0.554; p<0.001) and sensible nerve conduction velocity of the median nerve (Spearman’s rho=-0.5411; p<0.001).In the 46 hands positive in GS-US, tenosynovial hypertrophy of the flexor tendons was detected in 19 hands (41.3%), 7 of which (36.8%) also showed an additional cystic mass. In these 19 patients, clinical complains were more severely present than in patients with non-inflammatory CTS, as assessed by the BCTSQ with a total score of 68.8±13.4 vs. 59.3±13.7, respectively (p=0.007).Conclusion:In patients with active RA and clinical complains of CTS, ultrasound examinations provide additional information about inflammation which is helpful for a diagnosis of CTS. Thus, ENG and nerve GS-US should be used complementary for a diagnostic workup of CTS in RA patients with a suspicion of CTS. Power-Doppler may further improve the diagnostic performance of GS-US.References:[1]Padua L et al. Acta Neurol Scand 1997; 96:211–217[2]El Miedany et al., Rheumatology (Oxford). 2004 Jul; 43(7):887-895[3]Levine DW et al. J Bone Joint Surg Am 1993; 75: 1585-1592Figure 1.BCTSQ scores in patients with diagnosis of CTS and absence or presence of RA-related tenosynovial hypertrophyDisclosure of Interests:None declared

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