Limb Volume Measurement Research Articles

Utilization of 3-dimensional scanner technology to measure circumference and volume of limbs in patients bitten by venomous snakes

Introduction The objective of this study was to compare limb circumference measurements between a three-dimensional scanner and a measuring tape. Methods Patients older than 18 years, who were bitten by a green pit viper and visited the emergency department between 1 October and 20 December, 2019 were included. Two physicians measured the circumference of a bitten limb and a contralateral unaffected limb twice using both a measuring tape and a three-dimensional scanner. Each patient was measured at the first emergency department visit and again at 24 h, 48 h, and 72 h post-snakebite. There were three points of measurement on both limbs. Results There were 408 anatomical locations from 17 patients for measurement. The three-dimensional scanner and the measuring tape demonstrated a very high correlation (r-squared >0.940, P value <0.001) in measuring limb circumferences. Bland Altman plots also demonstrated the two methods measured limb circumferences with similar results with mean differences <1 cm. Intraclass correlation coefficient between the two methods was greater than 0.8 in every site for the lower limbs, but for the upper limbs, most sites had a poor agreement (ranges: 0.073–0.633). For limb volume measurement, the three-dimensional scanner provided excellent and moderate inter and intrarater reliabilities for the lower and upper limbs, respectively, Discussion The three-dimensional scanner could be reliably used to assess limb circumference with a strong correlation and with a relatively small error compared with the conventional method. Pictures from the scan can also be constructed to calculate limb volume that could have potential for other clinical purposes such as in evaluating antivenom response for limb swelling. Conclusions Circumferences from the three-dimensional scanner were comparable to those from the measuring tape, especially for the lower limbs, and the three-dimensional scanner demonstrated an added value for calculating limb volume.

Lymphedema Rates Following Axillary Lymph Node Dissection With and Without Immediate Lymphatic Reconstruction: A Prospective Trial.

Immediate lymphatic reconstruction (ILR) has been proposed to decrease lymphedema rates. The primary aim of our study was to determine whether ILR decreased the incidence of lymphedema in patients undergoing axillary lymph node dissection (ALND). We conducted a two-site pragmatic study of ALND with or without ILR, employing surgeon-level cohort assignment, based on breast surgeons' preferred standard practice. Lymphedema was assessed by limb volume measurements, patient self-reporting, provider documentation, and International Classification of Diseases, Tenth Revision (ICD-10) codes. Overall, 230 patients with breast cancer were enrolled; on an intention-to-treat basis, 99 underwent ALND and 131 underwent ALND with ILR. Of the 131 patients preoperatively planned for ILR, 115 (87.8%) underwent ILR; 72 (62.6%) were performed by one breast surgical oncologist and 43 (37.4%) by fellowship-trained microvascular plastic surgeons. ILR was associated with an increased risk of lymphedema when defined as ≥10% limb volume change on univariable analysis, but not on multivariable analysis, after propensity score adjustment. We did not find a statistically significant difference in limb volume measurements between the two cohorts when including subclinical lymphedema (≥5% inter-limb volume change), nor did we see a difference in grade between the two cohorts on an intent-to-treat or treatment received basis. For all patients, considering ascertainment strategies of patient self-reporting, provider documentation, and ICD-10 codes, as a single binary outcome measure, there was no significant difference in lymphedema rates between those undergoing ILR or not. We found no significant difference in lymphedema rates between patients undergoing ALND with or without ILR.

Analysis of different outcome parameters and quality of life after different techniques of free vascularized lymph node transfer

ObjectiveVascularized lymph node transfer (VLNT) has become an important surgical technique in the treatment of lymphedema. Considering the different available regions available for flap harvest, we aimed to analyze different donor sites for VLNT with respect to donor site morbidity, impact on limb volume, and patient-reported outcome measurements (PROMs). MethodsA single-center prospective study of all patients undergoing VLNT at the Department of Plastic Surgery and Hand Surgery of the University Hospital Zurich between September 2016 and 2023 was conducted. Lymph nodes were harvested either from the omentum (gastroepiploic [GE]-VLNT), the lateral thoracic wall (LTW), or the superficial inguinal region (SI-VLNT). Volume measurements and PROMs were assessed preoperatively and at different postoperative intervals. ResultsOverall, 70 patients with upper limb lymphedema (21%) or lower limb lymphedema (79%) with different lymphedema stages were included. There were 49 patients who underwent GE-VLNT, followed by LTW-VLNT (n = 16) and SI-VLNT (n = 5). Lymph node harvest from the SI was associated with a significantly higher frequency of seroma development. The average percentage volume loss related in comparison to the preoperative volume of the affected limb was 9% after GE-VLNT, 10% after LTW-VLNT, and 5% after SI-VLNT without a significant difference between the groups. PROMs revealed significant improvements for physical functioning, symptoms and psychological well-being, with no differences between the VLNT techniques. ConclusionsVLNT leads to a significant improvement of quality of life and can decrease limb volume effectively, regardless of the selection of donor site. GE-VLNT has become our flap of choice owing to its low donor site morbidity and its properties that allow a double transplantation while avoiding a second donor site.

Limb Volume Measurements: A Comparison of Circumferential Techniques and Optoelectronic Systems against Water Displacement.

Accurate measurements of limb volumes are important for clinical reasons. We aimed to assess the reliability and validity of two centimetric and two optoelectronic techniques for limb volume measurements against water volumetry, defined as the gold standard. Five different measurement methods were executed on the same day for each participant, namely water displacement, fixed-height (circumferences measured every 5 (10) cm for the upper (lower limb) centimetric technique, segmental centimetric technique (circumferences measured according to proportional height), optoelectronic plethysmography (OEP, based on a motion analysis system), and IGOODI Gate body scanner technology (which creates an accurate 3D avatar). A population of 22 (15 lower limbs, 11 upper limbs, 8 unilateral upper limb lymphoedema, and 6 unilateral lower limb lymphoedema) participants was selected. Compared to water displacement, the fixed-height centimetric method, the segmental centimetric method, the OEP, and the IGOODI technique resulted in mean errors of 1.2, 0.86, -16.0, and 0.71%, respectively. The corresponding slopes (and regression coefficients) of the linear regression lines were 1.0002 (0.98), 1.0047 (0.99), 0.874 (0.94) and 0.9966 (0.99). The centimetric methods and the IGOODI system are accurate in measuring limb volume with an error of <2%. It is important to evaluate new objective and reliable techniques to improve diagnostic and follow-up possibilities.

Techniques for Measuring the Fluctuation of Residual Lower Limb Volume in Clinical Practices: A Systematic Review of the Past Four Decades

Increased pressure and shear stress distributions at the limb–socket interface are hypothesised to result from changes in the residual limb shape and volume, which can cause socket fit difficulties. Accurate residual limb volume measurements may aid clinicians in developing strategies to accommodate volume fluctuations. This review primarily aims to analyse the techniques available for measuring the residual lower limb volume that may be used in clinical settings, as documented in the works published over the previous four decades. A comprehensive search of articles in PubMed, ScienceDirect, Web of Science, and Google Scholar identified 904 articles, and further analysis resulted in only 39 articles being chosen to be analysed. Based on the findings, there are nine techniques available to measure the residual limb volume: water displacement, anthropometric measurement, contact probes, optical scanning, spiral X-ray computed tomography (SXCT), magnetic resonance imaging (MRI), ultrasound, laser scanning, and bioimpedance. Considering the variety of techniques for determining residual limb volume, it is critical to choose the ones that best suit clinicians’ objectives, and each technique has potential sources of error that should be avoided by taking precautionary action. A comprehensive study of the measurement techniques is needed since researchers have developed and extensively utilised many new measuring devices, especially handheld 3D laser scanners.

Development of a rat model of lymphedema and the implantation of a collagen-based medical device for therapeutic intervention.

Secondary lymphedema is a common condition among cancer survivors, and treatment strategies to prevent or treat lymphedema are in high demand. The development of novel strategies to diagnose or treat lymphedema would benefit from a robust experimental animal model of secondary lymphedema. The purpose of this methods paper is to describe and summarize our experience in developing and characterizing a rat hindlimb model of lymphedema. Here we describe a protocol to induce secondary lymphedema that takes advantage of micro computed tomography imaging for limb volume measurements and visualization of lymph drainage with near infrared imaging. To demonstrate the utility of this preclinical model for studying the therapeutic benefit of novel devices, we apply this animal model to test the efficacy of a biomaterials-based implantable medical device.

A Prospective Preliminary Study Examining the Physiological Impact of Pneumatic Compression Dosing in the Treatment of Lower Extremity Lymphedema.

Background: Optimal frequency and duration of pneumatic compression device (PCD) therapy for lymphedema is undetermined. This prospective, randomized preliminary study evaluated the impact of different PCD dosing protocols on physiological and patient-reported outcomes (PROs) to estimate treatment effects, assess the responsiveness of various measurement techniques, and identify endpoints for a definitive PCD dosing trial. Methods and Results: Twenty-one patients with lower extremity lymphedema were randomized into three groups for treatment with the Flexitouch advanced PCD: (A) once per day for 1 hour, 12 consecutive days; (B) twice per day in 1-hour treatments, 5 consecutive days; or (C) twice per day in 2-hour treatments, 5 consecutive days. Outcomes measured were changes in limb volume (LV), tissue fluid, tissue tone, and PROs. Those in group A experienced mean (standard deviation) LV reductions of 109 (58) mL (p = 0.003) on day 1 and of 97 (86) mL (p = 0.024) on day 5. Group A also showed possible single-treatment decreases in extracellular fluid volume by bioimpedance spectroscopy (BIS) on day 5. There were no consistent changes in groups B and C. Long-term assessment of LV and BIS showed no clear change. Tonometry, ultrasound, local tissue water, and PROs showed wide variation among participants. Conclusions: LV measurements showed potential benefit for 1-hour daily PCD treatment. A definitive dosing trial should include LV, BIS, and PROs in a comparison of 1- and 2-hour daily treatment protocols conducted over a study period of 4 weeks. These data may inform appropriate outcome measures for other intervention studies in lymphedema.

Does the osteopathic pedal pump reduce lower limb volume in healthy subjects?

Lymphatic treatments are gentle and passive techniques believed to enhance movement of lymph back into the central circulatory system. Animal studies provide supportive evidence, yet there are few studies in humans. The aim of this study is to investigate whether the osteopathic pedal pump protocol reduces volume in the lower limbs of healthy subjects. A total of 30 first- and second-year medical students were recruited. Subjects were excluded from participating if they had acute asthma, chronic obstructive pulmonary disease (COPD), congestive heart failure, active infections, fractures of the lower extremities, or metastatic cancer. A within-subjects study design with pre- and posttreatment measurement of lower limb volume was utilized. Pretreatment lower limb volume measurements were obtained utilizing a volumetric water gauge prior tomyofascial thoracic inlet release anda 5min pedal lymphatic pump protocol treatment. Posttreatment lower limb measurements were taken immediately following the protocol treatment. A telephone interview was conducted 2-3days after the treatment to assess the participants' experience of the treatment and whether the treatment elicited a subjective change from baseline. A paired t test was utilized to determine the statistical significance of volume displacement posttreatment. The mean change of pretreatment to posttreatment lower limb volume was-45.63mL with a standard deviation of 37.65mL. The change between the pretreatment and posttreatment volume measurements was statistically significant (p<0.001). The minimum displacement was+19mL, and the maximum displacement was-167mL. The majority of participants perceived the treatment as effective and enjoyable, were likely to recommend it to others, and were willing to have it performed on them at routine office visits if there was a need. The osteopathic pedal pump technique, when utilized on those without leg lymphedema, reduces lower limb volume as measured by the volumetric water gauge. Further studies are warranted, especially in persons with excess lower-extremity edema, lymphedema or venous stasis.

Retracted: Invention and Clinical Application of an Oversleeve for Measuring Limb Volume in Postoperative Breast Cancer Patients.

[This retracts the article DOI: 10.1155/2022/5600804.].

Three-versus Two-Dimensional Sonographic Biometry for Predicting Birth Weight at Term

Because aberrant intrauterine growth is related with increased newborn morbidity and death, an accurate estimate of foetal weight is a crucial issue in perinatal treatment. Fetal biometric measures were taken using a 2D ultrasound to determine the birth weight of the baby. The purpose of this study is to compare the reliability of the traditional two-dimensional Hadlock formula for predicting foetal weight to that of three-dimensional ultrasound measurements of foetal thigh volume. Methods: One hundred pregnant women who presented to the Obstetrics and Gynecology department at Benha University Hospital with a singleton live pregnancy between weeks 37 and 40 and no foetal abnormality were included in the research. Patients carrying more than one child, who were in active labour, or who were pregnant with a medical condition were not included in the research. Before anybody took part in the research, they signed informed consent forms. The ranges for anticipated weight using 2D and 3D sonography are (2540–4010) and (2670–3810), respectively. Variations in 3D sonographic thigh volume were seen between (59.62 to 92.52). Comparing the weight predicted by 2D sonography and 3D sonography yielded similar results (P=0.883). Two-dimensional sonography could not accurately predict birth weight (P = 0.582). The discrepancy between the 3D sonographer's estimate and the actual birth weight was not statistically significant (P = 0.403). Actual birth weight was positively correlated with 2D sonography prediction (P 0.001). The actual birth weight was also positively correlated with the anticipated birth weight using 3D sonography (P 0.001). Predicting an expected birth weight for a foetus is aided by measuring the fractional TVol, the authors conclude. Measurements of fractional limb volume may be used to assess foetal size and growth at various stages of pregnancy, and future quantitative investigations should provide light on this topic. Exploring the best birth weight algorithm that adds TVol into conventional birth weight formulas requires large prospective research. Before this indicator may be used in clinical practise, further prospective studies are needed to determine whether or not soft tissue alterations, as measured by TVol, are associated with foetal growth limitation or macrosomia.

A new indocyanine green fluorescence lymphography protocol for diagnostic assessment of lower limb lymphoedema

The lower limbs are a common body site affected by chronic edema. Imaging examination of the lymphatic system is useful to diagnose lymphoedema, identify structural changes in individuals, and guide interventional strategies. In this study, we used a protocol combining indocyanine green (ICG) lymphography and ICG-guided manual lymphatic drainage (MLD) for the diagnostic assessment of lower limb lymphoedema. Patients with lower limb lymphoedema were divided into three groups by their medical history: primary, secondary cancer-related, or secondary non-cancer-related. ICG lymphography was conducted in three phases: initial observation, MLD to accelerate ICG dye transit and reduce imaging time, and imaging data collection. Lymphatic drainage regions were recorded, and the MD Anderson Cancer Center ICG staging was applied. We collected routine lymphoedema assessment data, including limb volume and bioimpedance spectroscopy measurements. Three hundred and twenty-six lower limbs that underwent ICG lymphography were analyzed. Eight drainage regions were identified. The ipsilateral inguinal and popliteal were recognized as the original regions, and the remaining six regions were considered compensatory regions that occur only in lymphoedema. More than half of the secondary cancer-related lower limb lymphoedema (57.6%) continued to drain to the ipsilateral inguinal region. The incidence of drainage to the ipsilateral inguinal region was even higher for the primary (82.8%) and secondary non-cancer-related (87.1%) groups. Significant associations were observed between cancer-related lymphoedema and the presence of compensatory drainage regions. We proposed a prospective ICG lymphography protocol for the diagnostic assessment of lower limb lymphoedema in combination with MLD. Eight drainage regions were identified, including two original and six compensatory regions.

Home-Based Intermittent Pneumatic Compression Therapy: The Impact in Chronic Leg Lymphedema in Patients Treated for Gynecologic Cancer.

We conducted a prospective study of cancer patients to investigate the efficacy, quality of life, satisfaction, and safety of a home-based intermittent pneumatic compression (IPC) device during the maintenance phase of lower extremity lymphedema. This device has a unique mode designed to mimic the manual lymphatic drainage (MLD) technique and thereby gently facilitate lymphatic draining of proximal extremities. Thirty patients with stage 3 chronic secondary unilateral leg lymphedema in the maintenance phase underwent IPC and conventional compression therapy for 4 weeks at home. The participants were guided to use 1 h course (30 min of MLD-mimicking mode and 30 min of conventional mode) of IPC device twice a day for 4 weeks. We assessed the patients’ limb-volume measurement, quality of life (QOL), and satisfaction four times. There were no significant time-dependent interactions in the inter-limb volume difference ratio (Vratio). In a subgroup analysis, participants who used the home-based IPC device and maintained their routine self-maintenance program of short-stretch bandages (group B, n = 21) showed a more significant decline in Vratio than those who did not maintained their routine care (group A, n = 9). All scores of QOL decreased significantly after the intervention without subgroup difference. All participants were satisfied with the 4-week intervention. This study demonstrated that a home-based IPC device with an MLD-mimicking program is a useful option for maintaining the volume of limbs and improving the QOL of patients with stage 3 chronic leg lymphedema during the maintenance phase.

Indocyanine green-guided liposuction for patients presenting with residual nonpitting edema after lymphovenous anastomosis

Lymphovenous anastomoses (LVA) techniques for the treatment of lymphedema are well defined, and results restoring lymph function are reported in the literature. However, unsatisfactory results (poor-responders) are common, leading to persistent nonpitting edema. Blind liposuction eliminates fat and fibrous tissue but may result in inadvertent damage to the lymph vessel system. Indocyanine green imaging of the lymphatic system provides the potential preservation of functioning lymphatics while conducting liposuction to address the excess adipose and fibrous tissue in these patients. Our study reports the results of a prospectively conducted technique in patients with nonpitting edema after failing previous LVA. It consists of indocyanine green-guided liposuction. Twenty poor-responders patients to LVA who presented with persistent nonpitting edema were operated with liposuction. Limb volume measurements, SPECT-CT/lymphoscintigraphy, and ICG lymphography were recorded and complemented with a satisfaction inquiry. The overall percentage of volume reduction was 46.2% after liposuction (p=0.001). None of our patients reported any set back with respect to the improvements they had achieved after LVA nor new infections. Satisfaction showed a mean improvement of 5 points in a 20-point scale. SPECT-CT/lymphoscintigraphy showed further improvements in 17 cases after liposuction, such as dermal back-flow reduction, spots along the lymphatic system, or lymph nodes not described in preoperative reports, without showing significant differences when compared with overall volume reduction (p=0.12). Controlled liposuction with ICG seems to be an effective technique for the reduction of residual non-pitting edema in poor responder patients after LVA. Overall, volume excess reduction after liposuction was 42.6%.

The 24-hour interval compression plan: part 2-lifestyle and therapeutic regimens to manage chronic oedema case series.

The aim of this case series was to retrospectively assess the impact on volume control and patients' quality of life (QOL) when a night-time garment was added to their previous compression regimen for a full 24-hour interval compression plan. Patients who had a history of chronic oedema presented to one of two oedema management centres in the US for treatment for oedema exacerbation and/or suboptimal performance of their current garments. Objective data examined were circumferential limb volume (cm3) measurements and QOL measured with the Lymphoedema QOL Tool (LYMQOL-Leg and LYMQOL-Arm). Subjective comments on functional abilities and perception of improvement with a compression plan that comprised a 24-hour interval were documented. All three patients presented in this case series had a reduction in limb volume and improvement in QOL when their daytime regimen of garments was updated and new night-time garments were added. Their subjective comments indicated improvement in activities of daily living and ease of controlling daytime oedema with a 24-hour interval compression plan. This case series illustrates the need for clinicians to create a partnership with the patient to promote concordance and adherence as part of their individual 24-hour interval compression plan. This partnership allows the plan to be uniquely changed and adjusted to allow each patient to feel in control of refreshing their mood, their skin and their garments.

Quality of life improvement in breast cancer survivors affected by upper limb lymphedema through a novel multiperspective physical activity methodology: a monocentric pilot study.

Chronic lymphedema causes psychophysical sequelae jeopardizing quality of life (QoL) of breast cancer (BC) survivors, and lack of effective therapies represents a major challenge for healthcare professionals. Structured adapted physical activity (APA) may represent an effective strategy to attenuate cancer treatment-related impairments and improve QoL. Here, we describe the effects of a specific APA intervention based on a novel multiperspective methodology in counteracting lymphedema-related morphofunctional alterations and improving QoL of BC survivors. BC survivors with chronic moderate/severe lymphedema attending the Cancer Rehabilitation Center in Florence were assessed before and after 8-week APA. The protocol consisted of both APA specialist-supervised and self-leaded sessions using a tailor-designed proprioceptive board. Body mass index, bioimpedance parameters, indirect upper limb volume measurement, and ultrasonography were performed. Wrist flexion/extension and hand strength functional tests were also executed. QoL, depression/anxiety and pain intensity were evaluated by ULL27, HADS, distress thermometer and NRS questionnaires, respectively. Although bioimpedance, ultrasound and volumetric measures remained mostly unchanged, wrist mobility, pain perception, depression, and QoL were all significantly ameliorated after APA. Our findings suggest that a multidisciplinary treatment approach involving APA professionals should be employed in the management of BC-related lymphedema to improve patient psychophysical outcomes and QoL.

Estimation of the Lymph Flow Through Thoracic Duct in Human Subjects Using the Urine Osmolarity: Applicable for Evaluating the Effectiveness of Manual Lymph Drainage

Currently, there are many methods to evaluate the effectiveness of manual lymph drainage in the treatment of lymphedema, that is, limb volume measurement, bio-electrical impedance measurement, computer tomography, and ultrasound imaging. However, it is difficult for these methods to accurately address the lymph flow generated by manual lymph drainage. Therefore, we aimed at developing a concise and accurate method to measure the lymph flow through the thoracic duct in human subjects, which is applicable for evaluating the effectiveness of manual lymph drainage. In the present mini-review, we demonstrate the developed method in detail and its scientific evidence for the effectiveness obtained with animal and human clinical experiments. In rat in vivo experiments, intragastric administration of distilled water significantly increased mesenteric flow, which was transported via the cisterna chyli and then the thoracic duct. The manual massage on the cisterna chyli in the anesthetized rabbit significantly accelerated the lymph flow through the thoracic duct, resulting in marked hemodilution. Abdominal respiration in the supine position in human subjects produced similar hemodilution, with a marked decrease in the concentration of vasopressin in the blood. On this basis, we developed a new method to accurately measure the lymph flow through the thoracic duct by using changes in the concentration of vasopressin in the blood. In addition, with changes in urine osmolarity depending on the concentration of vasopressin in the blood, we developed a more concise and noninvasive method for evaluating the lymph flow through the thoracic duct in human subjects. These methods may be applicable for evaluating the effectiveness for the manual lymph drainage in the patients with lymphedema.

Factors Predicting Limb Volume Reduction Using Compression Bandaging Within Decongestive Lymphatic Therapy in Lymphedema: A Multicountry Prospective Study.

Objectives: To identify predictive factors associated with limb volume reduction using different decongestive lymphatic therapy (DLT) systems in patients with lymphoedema, over a period of up to 28 days. Methods: A multicountry (Canada, France, Germany, the United Kingdom) prospective cohort study using (DLT): skin care, exercise, compression bandaging, and manual lymphatic drainage for up to 4 weeks. Reduction in limb volume comparing DLT with (1) standard multilayer bandaging with inelastic material, and with (2) multilayer bandaging with Coban2, together with the identification of factors associated with limb volume changes. Results: Out of 264 patients with upper or lower limb lymphedema, 133 used Coban2 and 131 used standard care. Following DLT, mean limb volume reduction was 941 mL using Coban2 compared with 814 mL using standard care. A difference of 127 mL was found (95% confidence interval -275 to 529 mL, p = 0.53). Of the 176 patients with leg swelling, 166 (94.3%) had a limb volume measurement after 28 days and were included in the risk factor analysis. Of these, 132 (79.5%) were female, with overall mean age of 60.1 years (standard deviation = 14.7), with secondary lymphedema in 102/163 (62.6%). Duration of lymphedema was >10 years in 75/161 (46.6%) and 99/166 (59.7%) were International Society of Lymphology late-stage II/III, indicating longstanding and/or a high frequency of patients with advanced stages of lymphedema. Ninety-one (54.8%) received Coban2 and 75 (45.2%) had standard care. Multivariable factors for a greater leg volume reduction were large initial leg volume (p < 0.001), DLT treatment duration of 4 weeks compared with 2 weeks (p = 0.01), and peripheral arterial disease (p = 0.015). Conclusion: Limb volume changes were found to be similar between groups. Lack of standardization of DLT makes interpretation of effectiveness problematic. There is an urgent need for randomized-controlled trials. Despite this, severe lymphedema with a large limb volume responded well to DLT in this study.

3D Fractional Limb Volume Identifies Reduced Subcutaneous and Lean Mass in Fetal Growth Restriction.

Fetal 2D and 3D fractional limb volume (FLV) measurements by ultrasound can detect fetal lean and subcutaneous mass and possibly percent body fat. Our objectives were to 1) compare FLV measurements in fetuses with fetal growth restriction (FGR) versus small for gestational age (SGA) defined by the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG)-supported international Delphi consensus and 2) correlate FLV findings with birth metrics. We hypothesize that FLV measurements will be significantly smaller in FGR versus SGA fetuses and will correlate closer with Ponderal index (PIx) in the neonate than abdominal circumference (AC). Patients were categorized as FGR or SGA as defined by ISUOG. Total thigh volume (TTV), volumes of lean mass (LMV), and fat mass volume (FMV) were calculated from 3D acquisitions. Measurements were compared between groups and correlated with birthweight (BW) and PIx (BW/crown-heal length). The FGR group (n=37) delivered earlier (37/2 versus 38/0; P= .0847), were lighter (2.2 kg versus 2.6 kg; P= .0003) and had lower PIx (0.023 versus 0.025; P= .0013) than SGAs (n=22). FGRs had reduced TTV (40.6 versus 48.4 cm3 ; P= .0164), FMV (20.8 versus 25.3 cm3 ; P= .0413), and LMV (19.8 versus 23.1 cm3 ; P= .0387). AC had the highest area under the curve (0.69) for FGR. FMV was more strongly associated with PIx than the AC (P= .0032). The AC and FLV measurements were significantly reduced in FGR fetuses compared to SGAs. While the AC outperformed FLV in predicting FGR, the FLV correlated best with PIx, which holds investigative promise.

Outcomes of Lymphovenous Anastomosis for Upper Extremity Lymphedema: A Systematic Review.

Background:Lymphovenous anastomosis (LVA) is an accepted microsurgical treatment for lymphedema of the upper extremity (UE). This study summarizes and analyzes recent data on the outcomes associated with LVA for UE lymphedema at varying degrees of severity.Methods:A literature search was conducted in the PubMed database to extract articles published through June 19, 2020. Studies reporting data on postoperative improvement in limb circumference/volume or subjective improvement in quality of life for patients with primary or secondary lymphedema of the UE were included. Extracted data consisted of demographic data, number of patients and upper limbs, duration of symptoms before LVA, surgical technique, follow-up, and objective and subjective outcomes.Results:A total of 92 articles were identified, of which 16 studies were eligible for final inclusion comprising a total of 349 patients and 244 upper limbs. The average age of patients ranged from 38.4 to 64 years. The duration of lymphedema before LVA ranged from 9 months to 7 years. The mean length of follow-up ranged from 6 months to 8 years. Fourteen studies reported an objective improvement in limb circumference or volume measurements following LVA, ranging from 0% to 100%. Patients included had varying severity of lymphedema, ranging from Campisi stage I to IV. The maximal improvement in objective measurements was found in patients with lower stage lymphedema.Conclusion:LVA is a safe, effective technique for the treatment of UE lymphedema refractory to decompressive treatment. Results of LVA indicate greater efficacy in earlier stages of lymphedema before advanced lymphatic sclerosis.

Diagnosis and management of secondary lymphedema

Secondary lymphedema, more common than its primary variant is essentially a clinical diagnosis. Evaluation should include measurement of limb circumference and volume and appropriate staging protocols to determine the severity of the condition. Imaging studies such as magnetic resonance imaging and lymphoscintigraphy are invaluable in ruling out other causes of extremity swelling and for planning surgical treatment. Conservative measures such as combined decongestive therapy are of prime importance in reducing the limb volume and should be continued to maintain the results of surgical treatment. Pharmacotherapy does not have much role in lymphedema. Surgical options which were initially restricted to debulking procedures in chronic late stages are now gaining more relevance with the advent of physiological techniques to prevent further progression of the condition. Detailed counseling regarding the chronic nature of the disease and the need for regular follow-up along with rehabilitation programs will further improve the management of lymphedema.