Main Page
Faculty Deanship
Dean
Health Empowerment Unit
Strategic Planning Unit
Development and Quality Unit
Medical and Bioethics Unit
Vice Dean for Graduate Studies and Research
Vice Dean for Female Section
Vice dean for Academic Affairs
Examination and Assessment Unit
Internship and Alumni Unit
Student Research Unit
E-learning Unit
Student Mentoring and Support Unit
Community Service Unit
Talent and Creativity Care Unit
Continuing Education Unit
Neuroscience Research Unit
Vice Deanship of Clinical Affairs / Administration
Organizational Structure
Departments
Basic Sciences
Department of Anatomy
Department of Pharmacology
Department of Pathology
Department of Microbiology and Medical Parasitolog
Deparment of Clinical Biochemistry
Department of Physiology
Department of Medical Genetics
Clinical Sciences
Department of Otorhinolaryngology
Department of Obstetrics and Gynecology
Department of Hematology
Department of Medical Education
Department of Anesthesia
Department of Family Medicine
Department of Community Medicine
Department of Surgery
Department of Orthopedic Surgery
Department of ophthalmology
Department of Radiology
Department of Internal Medicine
Department of Pediatrics
Department of Emergency Medicine
Department of Urology
Department of Dermatology
Latest News
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Faculty of Medicine
Document Details
Document Type
:
Article In Journal
Document Title
:
Prolonged apnea in the preterm infant is not a random event
Prolonged apnea in the preterm infant is not a random event
Subject
:
Neonatology
Document Language
:
English
Abstract
:
We tested the hypothesis that in preterm infants, prolonged apneas (apneas > or = 20 sec) are not random events but are preceded by frequent and progressively longer respiratory pauses associated with changes in ventilatory variables. We studied 36 preterm infants with apnea [birth weight 1190 +/- 60 g (mean +/- SEM), study weight 1300 +/- 60 g, gestational age 28 +/- 1 weeks, and postnatal age 23 +/- 2 days]. A nosepiece with a flow-through system was used to measure ventilation and alveolar gases. Throughout the monitoring period for each infant we established 10-min moving "window of observation" followed by a 1-min interval examined for the detection of a prolonged apnea. Within the 10-min window, three variables were defined: the number of apneic episodes, the maximum length of a single apneic episode, and the total duration of apneic time. During the following minute (eleventh) the presence or absence of a prolonged apnea was determined. Chi-square test for a linear-trend in the rate of prolonged apnea and multiple logistic regression analysis showed that the relative risk of a prolonged apnea increases significantly from preceding periods without apnea to preceding periods containing the potential predictors of prolonged apnea. The strongest predictor was total duration of apneic time in the previous 10 min. When the 1 min before prolonged apnea was compared with the 1 min of similar sleep state not having prolonged apnea, minute ventilation decreased, primarily due to a decrease in respiratory frequency. Oxygen saturation decreased and alveolar PCO2 did not change. These findings suggest that prolonged apnea is not a random event but is preceded by a disturbance of the respiratory control system characterized by (1) frequent apneas of progressive duration, (2) decrease in respiratory minute volume and frequency, and (3) decreased O2 saturation
ISSN
:
0735-1631
Journal Name
:
American Journal of Perinatology
Volume
:
14
Issue Number
:
4
Publishing Year
:
1417 AH
1997 AD
Article Type
:
Article
Added Date
:
Monday, August 31, 2009
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
سعد الصاعدي
Al-Saedi, Saad
Researcher
Doctorate
Files
File Name
Type
Description
29348.zip
zip
Back To Researches Page