Intravenous Administration of Furosemide in Heart Failure

JAMA ◽  
1967 ◽  
Vol 200 (10) ◽  
pp. 824 ◽  
Author(s):  
Michael Davidov
JAMA ◽  
1967 ◽  
Vol 200 (10) ◽  
pp. 824-829 ◽  
Author(s):  
M. Davidov

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
H Hagiwara ◽  
M Watanabe ◽  
Y Fujioka ◽  
T Koya ◽  
M Nakao ◽  
...  

Abstract Background In heart failure (HF), diastolic calcium (Ca) leak from sarcoplasmic reticulum (SR) via ryanodine receptor (RyR) causes delayed after depolarization (DAD), leading ventricular arrhythmias (VAs). Recent study reported that Ca uptake into mitochondria via mitochondrial calcium uniporter (MCU) suppress Ca waves (CaWs) and DAD in catecholaminergic polymorphic ventricular tachycardia, in which diastolic Ca leak is thought to be a major cause of VAs as in HF. However, such anti-arrhythmic effect of mitochondrial Ca uptake via MCU remains unclear in HF. Purpose We sought to investigate whether mitochondrial Ca uptake via MCU decreases CAWs and VAs incidence in ischemic HF mice. Methods Ten-week-old male C57BL/6J mice were divided into 2 groups; sham operation mice (Sham) or HF mice (HF) in which myocardial infarction was induced by left coronary artery ligation. After 4–6 weeks, cardiomyocyte or mitochondria was isolated respectively from the myocardium of Sham and the non-infarct myocardium of HF. Influence of MCU activation on Ca dynamics, VA inducibility and left ventricular hemodynamics were evaluated using Kaemenpferol, a MCU activator. Intracellular Ca dynamics and mitochondrial Ca uptake were measured in isolated cardiomyocytes loaded with Fluo-4 AM on an epifluorescence microscopy and by estimating the extra-mitochondrial Ca reduction with Fluo-5N on a spectrofluoro-photometer, respectively. VAs was induced by programmed stimulation in the Langendorff perfused hearts. Left ventricular (LV) pressure was measured using a microtip transducer catheter. Finally, the effect of intravenous administration of Kaempferol (5mg/kg) on hemodynamic parameters was examined 30 minutes after administration in Sham and HF. Results HF mice showed left ventricular dysfunction, as well as the increased heart and lung weights compared to Sham. MCU protein expression in cardiomyocytes did not differ between Sham and HF. Kaempferol increased mitochondrial Ca uptake in the isolated mitochondria both in Sham and HF. The number of the diastolic CaWs was higher in HF compared to Sham. Such increased number of CaWs in HF was attenuated by 10 μM Kaempferol, which was, however, abolished by a MCU blocker Ruthenium Red. The incidence of induced VA was significantly higher in HF than Sham, which was suppressed by Kaempferol. In vivo measurements, intravenous administration of Kaempferol did not show significant changes in hemodynamic parameters in Sham and HF mice. Conclusions Mitochondrial Ca uptake via MCU suppresses CaWs and VAs, but did not change LV hemodynamics in HF. Whereas traditional antiarrhythmic drugs have limited use in heart failure patients, a novel strategy that promotes Ca uptake into mitochondria might be a new and safer option for treating VAs in HF. Funding Acknowledgement Type of funding source: None


1997 ◽  
Vol 61 (5) ◽  
pp. 367-374 ◽  
Author(s):  
Yuzo Hirota ◽  
Chuichi Kawai ◽  
Ryohei Hori ◽  
Katsuhiko Okumura ◽  
Masahiko Kinoshita ◽  
...  

2021 ◽  
Vol 25 (11) ◽  
pp. 1234-1234
Author(s):  
S. M. Raysky

Prof. I. Donath (Dio Arztrliche Praxis, No. 5, 1929. Medizinisches Seminar) notes cases of the possibility of an easy delimitation of cardiac or pulmonary asthma from other types of suffocation, and at the same time cases where it is very difficult to make such a delimitation, as, for example, in old people-emphysematics with chronic bronchitis and a weak heart who have shortness of breath as a result of both heart and lung disease. In these latter cases, anti-broncho-asthmatic agents (astmolysin, lysostmin, belladonna and iodine) are successfully used simultaneously with cardiac ones. For pure cardiac asthma, morphine and its derivatives remain the best remedy. Since in some cases it is impossible to establish the absence of a pulmonary component in the etiology of this asthma, and morphine is contraindicated in pure pulmonary asthma, morphine should always be given in combination with caffeine or cardiazole. In many cases, seizures are stopped by injections of pituitrin, pituisan or pituglandol in an amount of 0.5 to 1.0 cm3, as well as nitrites, theobromine, and teominal. Cases of cardiac asthma, leading to symptoms of heart failure and pulmonary edema, are subject to cardiodiuretic therapy, and the best and fastest way is intravenous administration of digipurate in combination with aminophylline or salirgan.


1983 ◽  
Vol 52 (8) ◽  
pp. 1046-1049 ◽  
Author(s):  
Giovanni Bellotti ◽  
Lélio A. Silva ◽  
Antonio Esteves Filho ◽  
Miguel Rati ◽  
Álvaro V. de Moraes ◽  
...  

2007 ◽  
Vol 13 (6) ◽  
pp. S41
Author(s):  
Chikako Inaba ◽  
Toshio Nishikimi ◽  
Tsuyoshi Karasawa ◽  
Yayoi Ishikawa ◽  
Shogo Koshikawa ◽  
...  

2009 ◽  
Vol 15 (7) ◽  
pp. S176
Author(s):  
Akihiro Shirakabe ◽  
Noritake Hata ◽  
Shinya Yokoyama ◽  
Takuro Shinada ◽  
Yasuhiro Takahashi ◽  
...  

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