scholarly journals Can Study of Variations in Platelet Indices in Adult Thrombocytopenias Help to Differentiate the Underlying Mechanism? A Prospective Study

2020 ◽  
Author(s):  
HV Shubha ◽  
Archana Shetty ◽  
TG Vivek ◽  
Vijaya Chowdappa
Keyword(s):  
Platelet Count ◽  
Prospective Study ◽  
Statistical Significance ◽  
Underlying Mechanism ◽  
Good Knowledge ◽  
P Value ◽  
Distribution Width ◽  
Platelet Indices ◽  
Group 2 ◽  
Group 1

Introduction: Thrombocytopenia (TCP) is defined as a platelet count below 1,50,000 per microliter. This fall can be attributed to increased destruction, decreased production in bone marrow and pooling of platelets. A good knowledge of the cause and clinical course of the underlying pathology as reflected by the platelet indices contributes to the better management of TCP. With the advent of automation in haematology, these indices are now available from the routinely used blood cell counters in the laboratory. Aim: To determine if studying the variation in platelet indices helps to identify the aetiology of TCP. Materials and Methods: The prospective study was conducted in the haematology wing of central diagnostics attached to a medical college in Bangalore, Karnataka, India over a period of three months from June 2019 to August 2019. A total of 598 cases of adult TCPs were encountered, out of which 505 cases met the inclusion criteria and were categorised into three groups, namely- Hyperdestructive (Group 1), Hypoproductive (Group 2) and Abnormal pooling (Group 3). Variation of platelet indices {Platelet count, Plateletcrit (PCT), Mean Platelet Volume (MPV), Platelet Distribution Width (PDW)} were studied not only between the groups but also with the severity of TCPs. Data was analysed using the software Statistical Package for Social Sciences (SPSS) program version 20 and tested for statistical significance using one-way Analysis of Variance (ANOVA) test. A p-value of <0.05 was considered as statistically significant. Results: Of the 505 cases a majority fell under Group 1- 420 cases (83%). A higher value of MPV (11.870±1.3) and PDW (15.63±3.4) were seen in Group 1 compared to Groups 2 and 3. There was also significant variation among the platelet indices (PCT, MPV, PDW) with the severity of TCPs. Conclusion: Platelet counts along with a good knowledge on interpretation of platelet parameters obtained by automated analysers play a pivotal role in determining the aetiology of TCPs, thereby, providing better initial patient management.

Platelet Function and Activation in Patients with Immune Thrombocytopenia Treated with Eltrombopag: Comparison with Steroid-Treated and Untreated Patients,

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 3280-3280
Author(s):  
Johanna Haselboeck ◽  
Alexandra Kaider ◽  
Ingrid Pabinger ◽  
Simon Panzer
Keyword(s):  
Platelet Count ◽  
Treatment Group ◽  
Prospective Study ◽  
Platelet Function ◽  
Immune Thrombocytopenia ◽  
Steroid Treatment ◽  
Group 3 ◽  
Group 2 ◽  
Group 1 ◽  
Normally Distributed

Abstract Abstract 3280 Background: Eltrombopag has recently been approved for treatment in immune thrombocytopenia (ITP). Studies on platelet function in eltrombopag-treated patients in comparison to steroid-treated or untreated ITP patients are not available. Objectives: To assess the function of eltrombopag-induced platelets, we compared platelets from eltrombopag-treated patients to those from ITP patients treated with steroids and a group of patients without treatment in a prospective study (ClinicalTrials.gov number NCT00888901). Patients/Methods: We compared platelet function in patients treated with eltrombopag after treatment-induced platelet rise (group 1) to those under steroid treatment (group 2) and ITP patients without treatment (group 3) in a non-randomized prospective study. Platelet function was assessed by adhesion under high shear conditions (surface coverage, SC), P-selectin expression, and formation of platelet-monocyte aggregates (PMA) after treatment induced platelet rise or, in group 3, in patients with ITP without treatment and platelet count between 50–100×109/L at the time of inclusion. Data are given as median [quartiles]. Correlations of the outcome measures are described by the Spearman correlation coefficient. In case of normally distributed data, analysis of variance (ANOVA) and of covariance (ANCOVA) models and in case of non-normally distributed parameters the nonparametric Kruskal-Wallis test were used to compare the groups Results: Eleven patients (female=9) were included in the treatment group with eltrombopag (group 1), thirteen (female=5) in the steroid treatment (group 2) and 6 patients as untreated controls (group 3). None of these patients developed severe bleeding during the study period, none received rescue medication. Four/30 patients were not included in the final analysis, three because they had no treatment induced platelet rise (1 on eltrombopag and 2 on steroids) and 1 because of aspirin medication. Thus, ten patients on eltrombopag, ten patients on steroid treatment and 6 untreated patients were evaluated in the comparative analyses of platelet function. Platelet counts [x109/L] were 48.25 [45.00–59.00] in group 1 after eltrombopag-induced platelet rise, 82.75 [78.50–112.00] in group 2 and 69.25 [65.00–73.00] in group 3. SC was highest in steroid-treated patients (11.25% [8.10–14.00%]) compared to eltrombopag-treated (5.80% [1.80–9.00%]) and untreated (5.03% [3.80–6.20%]) patients and correlated significantly with the platelet count (r=0.72, p<0.0001). There were no differences in P-selectin expression [GeoMFI] (1.15 [0.47–2.77] in group 1, 0.27 [0.10–0.99] in group 2 and 0.59 [0.47–1.44] in group 3; p=0.34) and PMA levels (6.19% [3.91–21.39%] in group 1, 9.73% [1.88–13.29%] in group 2, and 6.56% [4.82–8.43%] in group 3; p=0.93) between the groups. Two patients developed venous thromboses during eltrombopag treatment. No characteristic alteration of platelet function and activation was identified in those 2 patients when compared to the other eltrombopag-treated patients. Conclusions: We proofed a good functional competence of eltrombopag-induced platelets. No substantial hyper-reactivity of eltrombopag-induced platelets in comparison to those of steroid-treated and untreated patients was determined. Disclosures: Pabinger: GlaxoSmithKline: Research Funding, Speakers Bureau. Panzer:GlaxoSmithKline: Speakers Bureau.

scholarly journals Prominent features of platelet count, plateletcrit, mean platelet volume and platelet distribution width in pulmonary tuberculosis

2012 ◽  
Vol 7 ◽  
Author(s):  
Füsun Şahin ◽  
Esra Yazar ◽  
Pınar Yıldız
Keyword(s):  
Platelet Count ◽  
Pulmonary Tuberculosis ◽  
Advanced Stage ◽  
Platelet Distribution Width ◽  
Platelet Volume ◽  
Acute Phase Reactants ◽  
Distribution Width ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Background: We aimed to investigate the relation of platelet count (PLT) and plateletcrit (PCT), mean platelet volume (MPV) and platelet distribution width (PDW) with other acute phase reactants and radiological extent in pulmonary tuberculosis (PTB). Methods: One hundred patients with PTB (Group 1), 50 patients with community-acquired pneumonia (Group 2) and 28 healthy control individuals (Group 3) were included in this analytic study. Results: WBC (White Blood Cell), ESR (Eritrocyte Sedimentation Rate), CRP (C-Reactive Protein), PLT and PCT values were both in Group 1 and Group 2 than in Group 3. PDW values were significantly higher in Group 1 than Group 3. WBC, ESR and CRP values were lower, while PLT and PCT values were higher in the Group 1 compared to Group 2 (p < 0.001). PLT was positively correlated with CRP and ESR values in the tuberculosis group (p < 0.001), while it was not correlated with CRP and ESR in the pneumonia group (p > 0.05). ESR, CRP, PLT and PCT values were found higher in radiological advanced stage (Stage 3) patients with PTB, while hemoglobin (Hb) was found lower (p < 0.05). Higher WBC, ESR, CRP and PCT values as well as radiological advanced stage were more common in PTB patients with thrombocytosis compared to the patients with normal platelet count, whereas Hb was found lower in these patients. Conclusions: This study indicates that reactive thrombocytosis and higher PCT and PDW develop frequently in PTB and there is a relation between thrombocytosis and acute phase reactants, that is the inflammatory response. In addition, tuberculosis with radiological advanced stage is seen more frequently in the patients with thrombocytosis and higher PCT, drawing attention to the possible role of platelets in the cell-based immune process of tuberculosis.

scholarly journals Are Average Platelet Volume (MPV), Red Cell Distribution Width (RDW) and Platelet Distribution Width (PDW) Guiding Markers for Acute Appendicitis Treatment Options?

2021 ◽  
Author(s):  
Erkan Dalbaşı ◽  
Omer Lutfi Akgül
Keyword(s):  
Platelet Count ◽  
Acute Appendicitis ◽  
Antibiotic Therapy ◽  
Laparoscopic Appendectomy ◽  
Standard Treatment ◽  
Treatment Options ◽  
Abdominal Ct ◽  
Distribution Width ◽  
Group 2 ◽  
Group 1

Background: Acute appendicitis (AA) is the most common cause of surgery performed for acute abdomen. The standard treatment for AA patients has been appendectomy for more than a century. use of broad-spectrum antibiotics, the medical treatment option has come to the fore in the treatment of uncomplicated AA. Aim: Evaluate whether WBC, platelet count, MPV, PDW, RDW, and C-reactive protein (CRP) values of patients diagnosed with uncomplicated AA clinically, with laboratory tests and radiologically with abdominal CT could be a marker for choosing medical or surgical treatment. Material and Method: 519 patients aged between 20 and 65 years who were diagnosed with uncomplicated AA by abdominal CT in our centre between January 2016 and January 2019 were retrospectively analysed. . The presence of at least one of the criteria of 7 mm or more appendix diameter and oedema or fluid accumulation around the appendix was accepted as uncomplicated AA. After the diagnosis of AA, 223 patients were treated medically, while 296 patients underwent laparoscopic appendectomy. The first group included patients who were treated medically and the second group included patients who underwent laparoscopic appendectomy. Results: Group 2 patients had higher mean platelet count (p <.005) and RDW (p = .003) values compared to Group 1 patients, while mean PDW (p <.001) values were lower compared to those of Group 1 patients. The differences between the mean WBC, CRP and MPV values of the groups were not statistically significant (p>0.05). Conclusions: The standard treatment for acute appendicitis is surgery. Recently, studies supporting antibiotic therapy have been conducted in patients diagnosed with AA. As a result, we think that PDW, RDW, and platelet values in patients diagnosed with uncomplicated AA may be a guide in choosing patients to be treated with surgery or antibiotics. Key Words: acute appendicitis, laparoscopic appendectomy, antibiotic therapy.

scholarly journals Analysis of Platelet Indices and its correlation with platelet count In Dengue

2020 ◽  
Vol 11 (SPL2) ◽  
pp. 284-289
Author(s):  
Dhanya Menon ◽  
Ganthimathy Sekhar ◽  
Siddharth A R ◽  
Sridevi M
Keyword(s):  
Platelet Count ◽  
Dengue Infection ◽  
Large Cell ◽  
Health Concern ◽  
P Value ◽  
Distribution Width ◽  
Platelet Indices ◽  
Ns1 Antigen ◽  
Automated Hematology Analyzer

Dengue is a global arboviral disease of growing public health concern. Several parameters have been used to detect the infection and severity of dengue. Recent evidence suggests that platelet indices can be used to assess the severity and prognosis of dengue infection. This retrospective study aims at assessing the role of the platelet indices – Mean Platelet Volume (MPV), Platelet Distribution Width, (PDW), P-LCR (Platelet Large Cell Ratio) and Plateletcrit (PCT) and its correlation with the platelet count in 50 Dengue NS1 antigen positive cases and to find the sex ratio and the age-wise distribution of the dengue cases. The indices were obtained using an Automated Hematology analyzer and were compared with the platelet count, considering p-value <0.05 as statistically significant. Thrombocytopenia was found in a majority of the cases and PDW and PLCR were found to be inversely proportional to the platelet count. MPV was found to have no correlation with the platelet count. Hence, we conclude that Platelet count, PDW, and P-LCR can be used as predictors of Dengue infection and severity, whereas MPV cannot be used as a predictor of Dengue infection or severity.

scholarly journals COMPARISON BETWEEN TWO TYPES OF ABDUCTION ORTHOTICS IN TREATING CONGENITAL CLUBFOOT

2017 ◽  
Vol 25 (4) ◽  
pp. 125-128
Author(s):  
Luiz Carlos Ribeiro Lara ◽  
Bruno Leite Gil ◽  
Lucio Carlos de Azevedo Torres Filho ◽  
Tarsila Pagnan Silva dos Santos
Keyword(s):  
Statistical Significance ◽  
Deformity Correction ◽  
Categorical Variables ◽  
P Value ◽  
Congenital Clubfoot ◽  
Level Of Evidence ◽  
Orthotic Device ◽  
Significant Difference ◽  
Group 2 ◽  
Group 1

ABSTRACT Objective: The objective of this study was to analyze and compare the effectiveness of two types of abduction orthotics used for the feet, the Denis-Browne type (traditional) and the Dobbs type (dynamic), with regard to maintenance of deformity correction and prevention of recurrence . Method: In this comparative retrospective case study, information was collected from the medical records of children with idiopathic congenital clubfoot (CCF). We evaluated a total of 43 feet in 28 patients, which were divided into two groups. Group 1 was comprised of 16 patients with a total of 24 CCFs treated with the traditional orthotic device. Group 2 consisted of 12 patients with a total of 19 CCFs treated with the dynamic orthotic device. The statistical analysis used the ANOVA test to compare the categorical variables between the groups. A significance level of 5% was adopted (p-value≤0.05) . Results: In Group 1, recurrence was observed in 2 feet (8.33%), and in 1 foot in Group 2 (5.26%). No significant difference in effectiveness was seen between the two types of orthotic devices . Conclusion: Both abduction devices were seen to be effective in maintaining correction of congenital clubfoot deformities. There was no statistical significance between type of orthotic device and recurrence. Level of Evidence III, Retrospective Comparative Study.

scholarly journals A PROSPECTIVE OBSERVATIONAL STUDY FOR RELATIONSHIP BETWEEN THROMBOCYTOPENIA AND CULTURE POSITIVE NEONATAL BACTERIAL SEPSIS

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Anita Devi ◽  
Rakesh Kumar Sharma ◽  
Kapil Kumar
Keyword(s):  
Platelet Count ◽  
Observational Study ◽  
Neonatal Sepsis ◽  
Prospective Observational Study ◽  
Hematological Parameters ◽  
Clinical Signs ◽  
Sepsis Group ◽  
P Value ◽  
Distribution Width ◽  
Platelet Indices

Background: Changes in Platelet parameters like Mean Platelet Volume and Platelet Distribution Width are helpful in diagnosis of neonatal sepsis but these indices have not been extensively studied in neonatal sepsis. Hence, the present study is undertaken to evaluate Platelet count and platelet indices in diagnosis of neonatal sepsis. Methods: This prospective observational study was conducted over a period of 4 months i.e from December 2019 to March 2020 in neonatal intensive care unit of Jhalawar Medical College & Attached Hospitals, Jhalawar. During the study period 154 consecutive neonates (both inborn and out born), with clinical signs and symptoms of sepsis along with either positive culture (confirmed neonatal sepsis ) or other laboratory findings suggestive of bacterial and fungal infection in absence of positive cultures (probable sepsis), were included after written informed consent from parents. Results: Out of total (154), 81.8%, 76% and 67.5% of cases had thrombocytopenia, raised MPV (>10.8) and raised PDW respectively. As compared to Non-sepsis group, MPV values were raised in more cases of Sepsis proven group (88%) and the difference was statistically significant with P value of 0.011. PDW values were also more increased in Sepsis proven group compared to Non-sepsis group. Conclusion: Platelet count and platelet indices, which are easily available hematological parameters in remote & resource poor areas of our country, should be taken into consideration for suspected cases of neonatal sepsis so that prompt treatment can be given, and morbidity and mortality can be reduced. Keywords: Sepsis, CRP, MPV, PDW.

scholarly journals Platelet indices evaluation in patients with dengue fever

2018 ◽  
Vol 6 (6) ◽  
pp. 2054 ◽  
Author(s):  
Payal Mukker ◽  
Smitha Kiran
Keyword(s):  
Platelet Count ◽  
Dengue Fever ◽  
Mean Platelet Volume ◽  
Dengue Infection ◽  
P Value ◽  
Platelet Distribution Width ◽  
Platelet Volume ◽  
Distribution Width ◽  
Platelet Indices ◽  
Significant Difference

Background: Platelet indices (PIs)-Platecrit, mean platelet volume (MPV) and platelet distribution width (PDW)-are a group of platelet parameters obtained as a part of complete blood count using automated hematology analyzers. Evidence suggests that PIs may have diagnostic and prognostic value in febrile thrombocytopenia. This study aims to understand the profile of PIs in dengue fever. Aims and objectives was to study the platelet indices in patients with dengue fever.Methods: The present study is a retrospective observational study conducted in a tertiary hospital in Kerala. Platelet count, mean platelet volume (MPV), platecrit and Platelet distribution width (PDW) along with routine blood parameters hemoglobin(Hb), hematocrit, WBC, Platelet count, serum bilirubin, liver enzymes (AST, ALT) of 123 patients were collected. These 123 patients were grouped into three according to the platelet count (<20000,20000-100000, >100000). All the test results are available in hospital database. This was accessed using inpatient numbers obtained from medical records department of our institution. All analysis was done using free to use software R and values were rounded off to the nearest decimal point. Non normally distributed parameters were expressed as median (IQR). Parameters which did not follow normal distribution were analyzed with Kruskall Wallis test and the values are expressed as mean (SD) and a p value <0.05 was considered statistically significant.Results: Platelet indices PDW (57±13.8 vs. 55.4±6.9, p value 0.001) and MPV (9.2±0.09 vs. 13.8±1.3fL, p value <0.001) values were significantly altered in dengue fever with platelet counts below 20,000 compared to platelet count more than one lakh group. Similarly, the Platelet index (MPVxPDW\PLCxPCT), MPV\PLC, MPV\Platecrit, PDW\PLC and PDW\Platecrit ratio showed statistically significant difference between the different platelet groups.Conclusions: Platelet indices are useful parameters in dengue infection. Other than platelet count, PDW, MPV, platecrit are useful to monitor dengue fever.

scholarly journals A STUDY ON PLATELET COUNT AND PLATELET INDICES IN NEONATAL SEPSIS IN A TERTIARY CARE CENTER

2021 ◽  
Vol 5 (9) ◽  
Author(s):  
Neha Sharma ◽  
G S Senger ◽  
Seema Meena ◽  
Priyanka Sharma
Keyword(s):  
Platelet Count ◽  
Neonatal Sepsis ◽  
Hematological Parameters ◽  
Care Center ◽  
Tertiary Care ◽  
Clinical Signs ◽  
Sepsis Group ◽  
P Value ◽  
Distribution Width ◽  
Platelet Indices

Background: The present study is undertaken to evaluate Platelet count and platelet indices in diagnosis of neonatal sepsis. Methods: This prospective observational study was conducted on 100 consecutive neonates (both inborn and out born), with clinical signs and symptoms of sepsis along with either positive culture (confirmed neonatal sepsis ) or other laboratory findings suggestive of bacterial and fungal infection in absence of positive cultures (probable sepsis), were included after written informed consent from parents. Results: 71 (71.00%) out of 100 cases had increased values of Platelet Distribution Width. In Proven sepsis group 31(86.11%) cases had increased values of PDW, in Probable sepsis 31(63.27%) and in No sepsis group 9(60.00%) cases were having increased values of PDW. This difference was statistically not significant (P value is 0.08). Conclusion: Platelet count and platelet indices, which are easily available hematological parameters in remote & resource poor areas of our country, should be taken into consideration for suspected cases of neonatal sepsis so that prompt treatment can be given, and morbidity and mortality can be reduced. Keywords: Sepsis, TPC, MPV, PDW.

scholarly journals P318 Left atrial dysfunction assessed by echocardiography in relation to left atrial fibrosis in patients undergoing ablation for atrial fibrillation

2020 ◽  
Vol 21 (Supplement_1) ◽  
Author(s):  
E Pilichowska ◽  
J Baran ◽  
P Kulakowski ◽  
B Zaborska
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Systolic Function ◽  
Electrophysiological Study ◽  
Stiffness Index ◽  
P Value ◽  
Group 2 ◽  
Left Atrial Dysfunction ◽  
Left Atrial Fibrosis ◽  
Group 1

Abstract PURPOSE Left atrial (LA) fibrosis is the hallmark of LA remodeling in atrial fibrillation (AF), alters LA function and may predict poor catheter ablation (CA) outcome. LA fibrosis may be assessed invasively using electroanatomical mapping (EAM) during electrophysiological study. The aim was to assess LA function parameters in relation to degree of LA fibrosis derived from EAM in patients with AF. METHODS Patients (pts) n = 39 (79% males, mean age 56+/-10) with non-valvular AF were studied with TTE and TEE before first CA during sinus rhythm. LA strain (LAS) and strain rate (LASR) were analyzed in reservoir (r), conduit (cd) and contractile (ct) phases. The velocities of mitral A, E" and A" were measured with Doppler. E/E" and LA stiffness index - the ratio of E/E" to LASr were assessed. LA appendage flow velocity (LAAv) was measured in TEE. LA volume using biplane area-length method was calculated. The EAM of LA was build using Carto System before CA. Low amplitude potentials area (LAPA) was quantitatively analyzed and expressed as a percentage of LA surface using the cut-off &lt;0.5 mV to detect sites of fibrosis. LA parameters were compared between mild (LAPA &lt;10%) moderate (LAPA 10-40%) and extensive degree of LA fibrosis (LAPA &gt;40%) (table). RESULTS The mean LA volume was 35 ± 11 mL/m². The LAPA ranged from 2 to 78 % of LA surface. Reduced LA function was observed in the LAPA &gt;40% group. Extensive LAPA altered mainly LA compliance parameters. Traditional LA systolic function parameters did not differ in relation to degree of LAPA. CONCLUSION LA compliance is mostly affected by LA fibrosis, thus LA diastolic parameters may be useful in the noninvasive assessment of LA fibrosis. Whether these parameters should be a part of the proper selection of candidates for CA requires further studies. LA function parameters LA parameters Group 1 LAPA &lt;10% n = 13 Group 2 LAPA &gt;10% &lt;40% n = 13 Group 3 LAPA &gt;40% n = 13 P-value Group 1 + 2 vs 3 Mitral A 0.55 ± 0.10 0.55 ± 0.24 0.73 ± 0.32 0.077 A" 9.19 ± 1.74 7.85 ± 1.43 7.92 ± 2.40 0.376 LASr 31.48 ± 4.52 26.48 ± 8.79 19.63 ± 6.76 &lt;0.001 LAScd 17.30 ± 3.05 15.44 ± 6.93 10.91 ± 4.04 0.003 LASct 14.18 ± 5.36 11.05 ± 3.67 8.72 ± 4.78 0.024 LASRr 1.22 ± 0.19 1.24 ± 0.21 0.92 ± 0.20 &lt;0.001 LASRct -1.71 ± 0.46 -1.37 ± 0.34 -1.04 ± 0.33 &lt;0.001 LA stiffness 0.20 ± 0.07 0.34 ± 0.17 0.63 ± 0.29 &lt;0.001 LAAv 0.83 ± 0.18 0.55 ± 0.17 0.60 ± 0.16 0.178

CD34 immunostain increases sensitivity of the diagnosis of fetal vascular malperfusion in placentas from ex-utero intrapartum treatment

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jerzy Stanek
Keyword(s):  
Statistical Significance ◽  
Treatment Procedure ◽  
Fetal Survival ◽  
Ex Utero Intrapartum Treatment ◽  
Life Threatening ◽  
Group 2 ◽  
Cd34 Immunostain ◽  
The Impact ◽  
Diaphragmatic Hernias ◽  
Group 1

AbstractShort CommunicationsEXIT (ex-utero intrapartum treatment) procedure is a fetal survival-increasing modification of cesarean section. Previously we found an increase incidence of fetal vascular malperfusion (FVM) in placentas from EXIT procedures which indicates the underlying stasis of fetal blood flow in such cases. This retrospective analysis analyzes the impact of the recently introduced CD34 immunostain for the FVM diagnosis in placentas from EXIT procedures.Objectives and MethodsA total of 105 placentas from EXIT procedures (48 to airway, 43 to ECMO and 14 to resection) were studied. In 73 older cases, the placental histological diagnosis of segmental FVM was made on H&E stained placental sections only (segmental villous avascularity) (Group 1), while in 32 most recent cases, the CD34 component of a double E-cadherin/CD34 immunostain slides was also routinely used to detect the early FVM (endothelial fragmentation, villous hypovascularity) (Group 2). 23 clinical and 47 independent placental phenotypes were compared by χ2 or ANOVA, where appropriate.ResultsThere was no statistical significance between the groups in rates of segmental villous avascularity (29 vs. 34%), but performing CD34 immunostain resulted in adding and/or upgrading 12 more cases of segmental FVM in Group 2, thus increasing the sensitivity of placental examination for FVM by 37%. There were no other statistically significantly differences in clinical (except for congenital diaphragmatic hernias statistically significantly more common in Group 2, 34 vs 56%, p=0.03) and placental phenotypes, proving the otherwise comparability of the groups.ConclusionsThe use of CD34 immunostain increases the sensitivity of placental examination for FVM by 1/3, which may improve the neonatal management by revealing the increased likelihood of the potentially life-threatening neonatal complications.

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