نتایج جستجو برای: pump failure

تعداد نتایج: 431259  

Journal: :international journal of advanced design and manufacturing technology 0
batool soleimani

this paper deals with a failure investigation of boiler feed pump’s shaft of a steam power plant. boiler feed water pump is a specific type of pump used to pump, feed water into a steam boiler and is one of most important part of steam power plants. feed pumps failure may cause failure of another part of steam power station, therefore keep them safe is an important problem. there are 12 feed pu...

Journal: :Canadian Journal of Anesthesia/Journal canadien d'anesthésie 1999

Journal: :acta medica iranica 0
rasoul ibrahim abdulrahman department of cardiac surgery, shahid madani hospital, tabriz university of medical sciences, tabriz, iran. rezayat parvizi department of cardiac surgery, shahid madani hospital, tabriz university of medical sciences, tabriz, iran.

the present study was undertaken to compare the in hospital results of coronary artery bypass graft (cabg) with (on pump) or without (off pump) cardiopulmonary bypass (cpb). data were collected on all first-time isolated cabgs with saphenous vein and/or artery grafts at shahid madani hospital in tabriz-iran, between 2006 and 2009. age and clinical profile were marched between on pump and off pu...

The use of pumps linked in parallel or series in large scale pipe systems is usually inevitable, to meet the required head and discharge. Transient flow occurs following a pump failure in a pump group as a result of variations in the flow rate. This research is an investigation about waterhammer caused by one or more pump-switch off in a pump group when they are connected in parallel. The opera...

Journal: یافته 2005
fereidon Sabzi , hasan Teimori ,

Background: It has not been yet developed a ost suitable method to treat right ventricular failure due to pulmonar artery hypertention resulted from ventricular arrhythia. Though some case reports about patients ready to heart transplant using left assist device or biventral assist device as bridge have been published in Journals, but nocase concerning application of centrifugal pump for treatm...

Journal: :iranian journal of radiology 0
ayla buyukkaya department of radiology, duzce ataturk government hospital, duzce, turkey; department of radiology, duzce ataturk government hospital, duzce, turkey. tel: +90-3805421390, fax: +90-3805421387, guven tekbas department of radiology, school of medicine, dicle university, diyarbakır, turkey ramazan buyukkaya department of radiology, school of medicine, duzce university, duzce, turkey

twin reversed arterial perfusion (trap) sequence is a syndrome with poor prognosis, seen only in monochorionic monozygotic twin pregnancies. the incidence is one in 35.000 births and one in 100 monozygotic twin pregnancies. it is characterized with a recipient fetus exhibiting lethal anomalies including acardia and a pump fetus. mortality is usually due to heart failure or premature labor cause...

Introduction: Coronary artery bypass grafting is a surgical operation that bypasses atherosclerotic coronary vessels and restores blood flow to the ischemic zone of hearts. And two different conventional methods are ON-pump CABG, and Off-pump CABG.  Altogether, the efficacy and safety of these two types of surgical procedures are still under debate. In this study, we aim to com...

Journal: :Journal of cardiology 2010
Hiroki Usuku Masafumi Nakayama Hitoshi Sumida Megumi Yamamuro Yasuhiro Izumiya Satoru Suzuki Kenichi Kusuhara Hirofumi Ueno Seigo Sugiyama Michihiro Yoshimura Hisao Ogawa

BACKGROUND There have been few reports that have analyzed the predictive factors for heart failure death, which is sub-divided into pump failure death and sudden cardiac death, in the long term. METHODS AND RESULTS We followed 186 consecutive patients with myocardial infarction (MI) and 115 consecutive patients with non-ischemic heart failure (NIHF) during 73+/-3 months. In the MI group, 26 d...

Behrooz Mottahedi, Kambiz Alizadeh, Maryam Salehi Masoomeh Tabari Sima Sabzevari,

Introduction: As off pump Coronary artery bypass grafting surgery (CABG) is a developing method in coronary cardiac surgery, most surgeons are anxious about the danger of emergency crash conversion. In this observational study we tried to show the rate and outcome of conversion . Material and methods: In this descriptive study about 477 coronary off-pump CABG patients were operated in Ghaem hos...

2015
Mai Iwataki Yun-Jeong Kim Byung-Joo Sun Jeong-Yoon Jang Masaaki Takeuchi Shota Fukuda Kyoko Otani Hidetoshi Yoshitani Hisaharu Ohe Ritsuko Kohno Yasushi Oginosawa Haruhiko Abe Robert A. Levine Jae-Kwan Song Yutaka Otsuji

BACKGROUND Heart failure (HF) can be caused by left ventricular (LV) pump failure as well as by bradyarrhythmias. Hemodynamic differences between HF by LV pump failure and that by bradyarrhythmia have not been fully investigated. We hypothesized that HF by LV pump failure could be associated with both reduced cardiac output (CO) and increased LV filling pressure due to associated LV diastolic d...

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