Relationship Between Pressure Passivity and Subependymal/Intraventricular Hemorrhage as Assessed by Pulsed Doppler Ultrasound

PEDIATRICS ◽  
1983 ◽  
Vol 72 (5) ◽  
pp. 665-669
Author(s):  
Peter A. Ahmann ◽  
Francine D. Dykes ◽  
Anthony Lazzara ◽  
Philip J. Holt ◽  
Don P. Giddens ◽  
...  
Keyword(s):  
Prospective Study ◽  
Doppler Ultrasound ◽  
Intraventricular Hemorrhage ◽  
Anterior Cerebral Artery ◽  
The Other ◽  
Passive State ◽  
Pulsed Doppler ◽  
Noninvasive Technique ◽  
Pulsed Doppler Ultrasound ◽  
A Prospective Study

A prospective study was undertaken using a range-gated, pulsed Doppler velocimeter to study flowpressure relationships in the anterior cerebral artery. Serial velocity and pressure studies were performed with each infant serving as his or her own control. The hypothesis tested was that ill preterm infants sustaining subependymal/intraventricular hemorrhage would have absent autoregulation. The hypothesis has been tested in 88 studies on 32 infants. Of 32 infants studied, 15 were judged to be pressure passive; nine of these children bled. The other 17 infants were not pressure passive; eight of these children bled (P > .05). From these studies, it may be concluded that the pressure passive state is not the final common link in the genesis of subependymal/intravertricular hemorrhage. Pulsed Doppler ultrasound may provide an extremely useful noninvasive technique for studing both the arterial and venous sides of the cerebral circulation.

Lifespan of peripheral intravenous short catheters in hospitalized children: A prospective study

2021 ◽  
pp. 112972982110052
Author(s):  
Maria Elizabeth Gómez-Neva ◽  
Martin Alonso Rondon Sepulveda ◽  
Adriana Buitrago-Lopez
Keyword(s):  
Cohort Study ◽  
Prospective Study ◽  
The Other ◽  
Hospitalized Children ◽  
Intravenous Catheter ◽  
Survival Analyses ◽  
Median Lifespan ◽  
Pediatric Services ◽  
A Prospective Study ◽  
Intravenous Catheters

Objective: To estimate the recommended lifespan of 223 peripheral intravenous accesses in pediatric services. Method: In this cohort study, we monitored the time of intravenous catheter between insertion and removal in children aged up to 15 years old in a Hospital from Bogotá-Colombia. The routine catheter observations was registered in questionnaires during nursing shifts. Survival analyses were performed to analyze the lifespan of the catheter free of complications. Results: The median lifespan of peripheral intravenous catheters without complications was 129 h (IQR 73.6–393.4 h). This median time free from complications was much lower for children ⩽1 year 98.3 h (IQR 63–141 h), than for participants aged >1 year 207.4 h (IQR 100–393 h). Catheters of 24 G (gauge) caliber had a median complication free time of 128 h (IQR 69–207 h) and 22 G calibers 144 h (IQR 103–393 h). Conclusions: In this study, 75% of peripheral indwell catheters remained free from complications for 74 h, the other extreme 25% of these patients could remain up to 393 h.

scholarly journals Evaluation of Fetal Pulmonary Veins During Early Gestation by Pulsed Doppler Ultrasound: A Feasibility Study

2015 ◽  
Vol 2 (1) ◽  
pp. 27-32
Author(s):  
Aldo L. Schenone ◽  
Gelsy Giugni ◽  
Mauro H. Schenone ◽  
Luis Diaz ◽  
Alberto Bermudez ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Feasibility Study ◽  
Pulmonary Veins ◽  
Pulsed Doppler ◽  
Early Gestation ◽  
Pulsed Doppler Ultrasound

scholarly journals Bridge-therapy with enoxaparin in the preoperative period of endarterectomy

2010 ◽  
Vol 68 (5) ◽  
pp. 775-777
Author(s):  
Jair Leopoldo Raso ◽  
Rogério Zenóbio Darwich ◽  
Francisco de Lucca Jr ◽  
Romeu Valle Santana ◽  
Marco Túlio Tanure ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Mortality Rate ◽  
Prospective Study ◽  
Low Molecular Weight Heparin ◽  
The Other ◽  
Low Molecular Weight ◽  
Preoperative Period ◽  
Safe Strategy ◽  
A Prospective Study ◽  
Bridge Therapy

Cervical clot is one of the complications of endarterectomy. This risk may be higher in patients using aspirin or clopidogrel. On the other hand, stroke may occur if the medication is interrupted before surgery. We carried out a prospective study of 124 endarterectomies in 119 patients in which aspirin or clopidogrel was stopped and a bridge-therapy with enoxaparin was administered preoperatively. There was no case of stroke during the period of the bridge-therapy. One patient developed cervical clot (0.8%) in the fifth postoperative day. Mortality rate in this series was 0.8%. There was no complication directly related to the use of enoxaparin. Bridge-therapy with low molecular weight heparin is a safe strategy for patients elected for endarterectomy

Diagnosis of Renal Pseudoaneurysms by Pulsed Doppler Ultrasound

1985 ◽  
Vol 13 (9) ◽  
pp. 662-666 ◽  
Author(s):  
Yi‐Hong Chou ◽  
Chui‐Mei Tiu ◽  
Huay‐Ben Pan ◽  
Yeou‐Gie Su ◽  
Tsuen Chang
Keyword(s):  
Doppler Ultrasound ◽  
Pulsed Doppler ◽  
Pulsed Doppler Ultrasound
Sign in / Sign up

Export Citation Format

Share Document