| Ventilatory pattern, intrapleural pressure, and cardiac output. | |
| | |
MedLine Citation:
|
PMID: 319705 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Continuous positive-pressure ventilation may decrease cardiac output. However, a few reports have separated the effects of positive and end-expiratory pressure (PEEP) from those of mechanical ventilation. Ten surgical patients requiring mechanical ventilatory support had catheters inserted for measurement of right atrial pressure (RAP), pulmonary artery occlusion pressure (PAOP), intrapleural, radial artery, airway, and atrial filling pressures, and cardiac output. All patients breathed spontaneously between mechanical breaths delivered every 30 seconds by intermittent mandatory ventilation (IMV). Measurements were made with 0, 5, and 10 cm H2O PEEP, and during intermittent positive-pressure ventilation (IPPV) with 12 breaths/min without PEEP. Airway pressure (Paw), intrapleural pressure, RAP, and PAOP were increased by PEEP and IPPV. Intrapleural pressure increased most during IPPV (p less than 0.001). Atrial filling pressures and cardiac output were unaffected by PEEP but decreased during IPPV (p less than 0.001). Patients receiving IMV maintained negative intrapleural pressure, atrial filling pressure, cardiac output and, therefore, O2 delivery, regardless of PEEP level. The authors conclude that patients requiring mechanical respiratory support, with or without PEEP, may maintain better cardiopulmonary function when allowed some spontaneous ventilatory activity. |
| | |
Authors:
|
J B Downs; M E Douglas; P M Sanfelippo; W Stanford; M R Hodges |
Related Documents
:
|
6367545 - Hemodynamic consequences of peep in seated neurological patients--implications for para... 362985 - The stocks suction bullet. 2656095 - Pulmonary management during extracorporeal membrane oxygenation. 20521025 - Continuous flow biphasic positive airway pressure by helmet in patients with acute hypo... 12003255 - Effects of left ventricular systolic dysfunction on left atrial appendage and left atri... 20367815 - Impact of prevention structures and processes on pressure ulcer prevalence in nursing h... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Anesthesia and analgesia Volume: 56 ISSN: 0003-2999 ISO Abbreviation: Anesth. Analg. Publication Date: 1977 Jan-Feb |
Date Detail:
|
Created Date: 1977-03-31 Completed Date: 1977-03-31 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 1310650 Medline TA: Anesth Analg Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 88-96 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Blood Gas Analysis Blood Pressure Cardiac Output* Humans Intermittent Positive-Pressure Breathing Pleura / physiology* Positive-Pressure Respiration Pressure Respiration, Artificial* Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Autonomic blockade and the cardiovascular and catecholamine response to electroshock.
Next Document: Treatment of diffuse metastatic cancer pain by instillation of alcohol into the sella turcica.