Abstract：
OBJECTIVES:The analysis of energetic ventricular variable changes during artificial ventilation, obtained by numerical simulation was done. Twenty-one sets of hemodynamic parameters for eight cardiosurgical patients were used to estimate left and right stroke work. The data were collected for three methods of ventilation: conventional, lung-protective (with minute ventilation diminished by half) and high frequency ventilation (with frequency 5, 10, or 15 Hz). METHODS:The computer simulator (CARDIOSIM) of the cardiovascular system, was used as a tool to calculate values of energetic ventricular variables for conditions that corresponded to these during in vivo measurements. Different methods of ventilation caused differences of intrathoracic pressure, haemodynamic and finally energetic ventricular variables. The trends of these variable changes were the same in in vivo and simulation studies, in the whole range of intrathoracic pressure changes (Pt = 1.5-3.5 mmHg). RESULTS:As values of main hemodynamic variables like cardiac output or arterial, systemic and pulmonary pressures were very close in both studies. Cardiac index and left ventricular stroke work also differed less than 10% for all examined patients and computer simulation. In a case of right ventricular stroke work the difference between in vivo data and simulation was a bit greater than 10% for two of eight patients under study. CONCLUSIONS:Our comparative analysis proved that numerical simulation is a very useful tool to predict changes of main hemodynamic and energy-related ventricular variables caused by different levels of positive Pt. It means that it can help an anesthesiologist to choose an appropriate method of artificial ventilation for cardiosurgical patients.
journal_name
Methods Inf Medjournal_title
Methods of information in medicineauthors
De Lazzari C,Darowski M,Wolski P,Ferrari G,Tosti G,Pisanelli DMkeywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
98-105issue
1eissn
0026-1270issn
2511-705Xpii
05010098journal_volume
44pub_type
杂志文章abstract：:The relationship was studied between the increase in oxygen uptake (VO2) measured breath-by-breath at the mouth, and the increase in femoral artery blood flow measured continuously with pulsed and echo Doppler methods. Five men exercised at 50 W on a knee extension ergometer in both the supine and the upright posture....
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1997-12-01 00:00:00
abstract：:The AVA program combines a thirty-year history with an approach that remains innovative; namely: multivariate statistical analysis on orthogonal ECG leads. Its diagnostic reference base includes only diagnoses independently verified by non-ECG criteria. The diagnostic module assesses probabilities of nine alternative ...
journal_title：Methods of information in medicine
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doi：
更新日期：1990-09-01 00:00:00
abstract：INTRODUCTION:This article is part of the Focus Theme of METHODS of Information in Medicine on "Managing Interoperability and Complexity in Health Systems". BACKGROUND:Data sharing and integration between the clinical research data management system and the electronic health record system remains a challenging issue. T...
journal_title：Methods of information in medicine
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abstract：BACKGROUND:Diagnosis and management of dementia is a complex process and primary care physicians are under-equipped to deal with uncertainties in the provision of optimal care for the patient. OBJECTIVE:To develop a computer decision support system (CDSS) which could assist physicians with diagnosis and management and...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：OBJECTIVES:This study aimed at gaining comprehensive information on the current status of patient care and management applications used in German acute hospitals. Since the degree of ICT coverage in hospitals depends on the attitude of the key decision makers we also wanted to capture their plans and priorities and her...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：OBJECTIVES:To assess the effects of a CPOE system on inter-professional workflow in the medication process. METHODS:Twenty-three semi-structured interviews with physicians, nurses, and pharmacists were conducted in a Dutch academic hospital. In addition, the handwritten and system-generated documents used daily were c...
journal_title：Methods of information in medicine
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1996-03-01 00:00:00
abstract：OBJECTIVES:Lifestyle has a major influence on the development and progression of atherosclerosis. Our motto for healthy habits is "give up one, reduce two, and increase three". The one thing that is to be given up is smoking. The two things that are to be reduced are intake of food and alcohol. The three things that ar...
journal_title：Methods of information in medicine
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doi：
更新日期：2005-01-01 00:00:00
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journal_title：Methods of information in medicine
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doi：
更新日期：2002-01-01 00:00:00
abstract：OBJECTIVES:As a preliminary for the design of Computer-Based Patient Records, the aim of this paper is to build an understanding of the roles physical artifacts like paper-based patient records play in supporting cognition and collaboration in the health-care settings. METHOD:A small ethnographically-informed study wa...
journal_title：Methods of information in medicine
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doi：
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journal_title：Methods of information in medicine
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doi：
更新日期：2006-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1993-02-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2001-03-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME14-02-0030
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1997-12-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME12-01-0079
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pub_type： 杂志文章
doi：10.3414/ME10-01-0069
更新日期：2012-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2001-07-01 00:00:00
abstract：OBJECTIVES:To contribute a new perspective on recent investigations into the scientific foundations of medical informatics (MI) and bioinformatics (BI). To support efforts that could generate synergies and new research directions. METHODS:MI and BI are compared and contrasted from a philosophy of science perspective. ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：OBJECTIVES:In 1998, we reported a steady increase in the number of publications indexed in MedLine with the MeSH term 'Medical Records Systems, Computerized'. No signs indicating an increasing interest of high-impact medical journals to publish on the computer-based patient record could be determined. In this review we...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
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journal_title：Methods of information in medicine
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journal_title：Methods of information in medicine
pub_type： 社论
doi：10.1160/me5006
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journal_title：Methods of information in medicine
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME13-02-0025
更新日期：2015-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：BACKGROUND:Radiology reports are a permanent record of patient's health information often used in clinical practice and research. Reading radiology reports is common for clinicians and radiologists. However, it is laborious and time-consuming when the amount of reports to be read is large. Assisting clinicians to locat...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.1055/s-0039-1694992
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abstract：:A few years ago, a new method of survival analysis, denoted period analysis, has been developed to derive more up-to-date estimates of long-term survival rates of cancer patients, but this method has rarely been applied so far. Using empirical examples from the Saarland Cancer Registry, we illustrate how seriously tra...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2001-07-01 00:00:00
abstract：OBJECTIVES:The International Medical Informatics Association (IMIA) today is an inclusive organization that represents the medical and health informatics world through its multiple member countries as well as affiliate, corporate and academic institutions, plus working groups and regions. The IMIA leadership deemed thi...
journal_title：Methods of information in medicine
pub_type： 社论
doi：
更新日期：2006-01-01 00:00:00
