https://journal.chestnet.org/article/S0012-3692(12)60137-8/pdf

Antithrombotic therapy in neonates and children: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines.

Background—The goal of this statement is to review available literature and to put forth a scientific statement on the current practice of fetal cardiac medicine, including the diagnosis and manage...

/pdf/diagnosis-and-treatment-of-fetal-cardiac-disease-a-1komqhwbxf.pdf

Diagnosis and Treatment of Fetal Cardiac Disease A Scientific Statement From the American Heart Association

Treatment of early-stage breast cancer

Venous thromboembolism in childhood: a prospective two-year registry in The Netherlands.

There is accumulating evidence that insulin has a physiological role to vasodilate skeletal muscle vasculature in humans. This effect occurs in a dose-dependent fashion within a half-maximal respon...

Hemodynamic actions of insulin

AIUM practice guideline for the performance of fetal echocardiography

The measurement of peripheral blood flow by plethysmography assumes that the cuff pressure required for venous occlusion does not decrease arterial inflow. However, studies in five normal subjects suggested that calf blood flow measured with a plethysmograph was less than arterial inflow calculated from Doppler velocity measurements. We hypothesized that the pressure required for venous occlusion may have decreased arterial velocity. Further studies revealed that systolic diameter of the superficial femoral artery under a thigh cuff decreased from 7.7 +/- 0.4 to 5.6 +/- 0.7 mm (P less than 0.05) when the inflation pressure was increased from 0 to 40 mmHg. Cuff inflation to 40 mmHg also reduced mean velocity 38% in the common femoral artery and 47% in the popliteal artery. Inflation of a cuff on the arm reduced mean velocity in the radial artery 22% at 20 mmHg, 26% at 40 mmHg, and 33% at 60 mmHg. We conclude that inflation of a cuff on an extremity to low pressures for venous occlusion also caused a reduction in arterial diameter and flow velocity.

Venous occlusion plethysmography reduces arterial diameter and flow velocity

Ventriculomegaly may be diagnosed sonographically by identifying abnormal ventricular size. The lateral ventricular ratio (LVR) is a useful index in differentiating normal-sized ventricles from ventriculomegaly. The purpose of this study was to validate previously reported data establishing the normal range for LVR during the second trimester. Prior to 24 weeks, the diagnosis of ventriculomegaly may be difficult since the LVR normal range is quite large. The LVRs for 122 normal fetal ultrasound examinations were calculated based on measurements obtained by three observers. Data were obtained for fetuses during each week of gestation from 15 to 25 weeks. Lateral ventricular ratios varied from 56 +/- 18 per cent (mean +/- 2 standard deviations) at 15 weeks to 33 +/- 4 per cent at 25 weeks. The lateral ventricular width (LVW) range for normal fetuses was 0.7 to 1.1 cm as compared with a LVW range of 1.1 to 2.7 cm for 16 fetuses with hydrocephalus diagnosed during the second trimester. In conclusion, the LVR is extremely useful in differentiating ventriculomegaly from normal ventricular size. Serial ultrasound examinations are often mandatory in the second trimester in order to definitely identify ventriculomegaly. In addition, normal ventricular size may be verified with a LVW of less than 1.1 cm.

Fetal lateral ventricular ratio determination during the second trimester.

An erroneous diagnosis of spina bifida may be made using obstetric ultrasound (US) if the examiner is unfamiliar with normal fetal sacral anatomy or the ways in which artifacts can affect the appearance of the normal lumbosacral posterior elements. Two normal neonates who appeared to have sacral dysraphism in utero are described and compared with US and CT studies of an anatomically normal 34-week cadaver specimen. In the event of transducer angulation, lumbosacral spina bifida must be diagnosed with the utmost caution if an associated sac or mass is not present.

Normal fetal sacrum simulating spina bifida: "pseudodysraphism".

Advanced-practice (AP) ultrasonography by an AP sonographer or ultrasound practitioner is an emerging allied health profession. The efficacy of this professional in sonographic diagnosis has not been evaluated. This report describes a comparison of the efficacies of diagnosis using a traditional approach and diagnosis by the AP sonographer. Between 1991 and 1995, the authors performed a retrospective, case-controlled study. Patients were evaluated with either (1) a sonographer-based method (limited supervision with perinatal consultation as necessary) or 2) a sonologist-dominant method (direct supervision by a radiologist). Demographic information, ultrasonographic findings, delivery information, and data outcomes were compared. Multiple statistical methods were used and p < 0.05 was considered significant. Of 840 patients studied, 420 were evaluated with the sonographer-based method and 420 with a sonologist-dominant method. There was no significant difference in any potentially predisposing maternal risk factor (except maternal age and education), medical history, variable relevant risk factors associated with the current pregnancy, characteristics associated with delivery, or prenatal ultrasonographic variable. The evaluation of diagnostic efficacy for birth defects showed no difference. The sensitivity and specificity of diagnosis using the sonographer-based method were 100% and 94.7% for the detection of fetal abnormalities, respectively, and 100% and 91.4%, for the sonologist-dominant method. The diagnostic efficacy of the AP sonographer or ultrasound practitioner was found to be similar to that of the traditional sonographer-sonologist model. While, intuitively, there are significant advantages to multiple observers, the experienced, well-trained AP sonographer can function independently, with only discretionary consultation and assistance.

Advanced-practice sonography in obstetrics and gynecology: a pilot study investigating the efficacy of the ultrasound practitioner.

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Julia A. Drose

Author Tools

Chat about Author