Abstract:
BACKGROUND:The calcium sensitizer levosimendan is increasingly used to improve hemodynamics in patients with acutely decompensated heart failure. By binding to cardiac troponin C the conformation of the calcium-troponin C complex is stabilized, which leads to acceleration of actin-myosin crossbrigde formation and increased force generating capacity of muscle fibers. Besides indications in cardiac failure, beneficial effects of levosimendan in skeletal muscle disorders are currently evaluated. The aim of this study was to investigate differential effects of levosimendan on skeletal muscle of pigs with and without susceptibility to malignant hyperthermia (MH) in order to identify possible risks of this emerging drug for patients with predisposition to MH. METHODS:Muscle bundles of 17 pigs (9 MH susceptible (MHS); 8 MH non-susceptible (MHN)) were excised under general anesthesia and examined in the tissue bath with increasing concentrations of levosimendan (0.065; 0.125; 0.5; 1.0; 10 and 50 μg/ml). Baseline tension and twitch force were monitored continuously. Data are presented as median and interquartile range. Statistical evaluation was performed using D'Agostino & Pearson test for normal distribution and student's t test and 2-way ANOVA for differences between the groups. P < 0.05 was considered significant. RESULTS:There were no differences between the groups concerning length, weight, initial twitch force and pre-drug resting tension of the investigated muscle strips. After an initial decrease in both groups, twitch amplitude was significantly higher in MHN (- 3.0 [- 5.2-0.2] mN) compared to MHS (- 7.5 [- 10.8- -4.5] mN) (p = 0.0034) muscle at an applied levosimendan concentration of 50 μg/ml. A marked increase in resting tension was detected following levosimendan incubation with 50 μg/ml in MHS muscle bundles (3.3 [0.9-6.1] mN) compared to MHN (- 0.7 [- 1.3-0.0] mN) (p < 0.0001). CONCLUSIONS:This in vitro investigation revealed the development of significant contractures in muscle bundles of MHS pigs after incubation with levosimendan. However, the effect appeared only at supra-therapeutic concentrations and further research is needed to determine the impact of levosimendan on MHS individuals in vivo.
journal_name
BMC Anesthesioljournal_title
BMC anesthesiologyauthors
Schuster F,Johannsen S,Isbary S,Türkmeneli I,Roewer Ndoi
10.1186/s12871-018-0644-zsubject
Has Abstractpub_date
2018-12-03 00:00:00pages
182issue
1issn
1471-2253pii
10.1186/s12871-018-0644-zjournal_volume
18pub_type
杂志文章abstract:BACKGROUND:Ketamine and hyperoxia are widely used in obstetric and pediatric settings. Either ketamine or hyperoxia has been reported to cause neuroapoptosis in the developing brain, and ketamine-induced neuronal apoptosis may involve a compensatory upregulation of the N-methyl-D-aspartate (NMDA) receptor NR1 subunit. ...
journal_title:BMC anesthesiology
pub_type: 杂志文章
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更新日期:2018-05-10 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
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更新日期:2019-04-25 00:00:00
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journal_title:BMC anesthesiology
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journal_title:BMC anesthesiology
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journal_title:BMC anesthesiology
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
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更新日期:2014-09-25 00:00:00
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更新日期:2014-01-02 00:00:00
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journal_title:BMC anesthesiology
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更新日期:2007-07-07 00:00:00
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更新日期:2018-04-02 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章
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更新日期:2013-07-17 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章
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更新日期:2021-01-07 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章
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更新日期:2007-01-31 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章
doi:10.1186/s12871-019-0748-0
更新日期:2019-05-15 00:00:00
abstract:BACKGROUND:The peri-operative effectiveness of ultrasound-guided great auricular nerve block (GANB) in patients, especially in adult patients undergoing middle ear microsurgery remains unclear. We hypothesized that ultrasound-guided GANB would decrease the hemodynamic responsiveness to incision and opioid consumption i...
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pub_type: 杂志文章
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更新日期:2020-09-15 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
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更新日期:2018-07-11 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2020-01-30 00:00:00
abstract:BACKGROUND:Renal dysfunction following intraoperative arterial hypotension is mainly caused by an insufficient renal blood flow. It is associated with higher mortality and morbidity rates. We hypothesised that the intraoperative haemodynamics are more stable during xenon anaesthesia than during isoflurane anaesthesia i...
journal_title:BMC anesthesiology
pub_type: 杂志文章
doi:10.1186/s12871-019-0799-2
更新日期:2019-07-09 00:00:00
abstract:BACKGROUND:Knee arthroplasty leads to postoperative pain. This study compares analgesia and postoperative bleeding achieved by intrathecal morphine with a continuous femoral plus single-shot sciatic nerve block. METHODS:A randomized non-blinded clinical trial enrolled patients aged over 18 years old, ASA I to III who ...
journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
doi:10.1186/s12871-017-0355-x
更新日期:2017-05-12 00:00:00