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2014 ; 18
(6
): 682
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Adenosine, lidocaine and Mg2+ improves cardiac and pulmonary function, induces
reversible hypotension and exerts anti-inflammatory effects in an endotoxemic
porcine model
#MMPMID25497775
Granfeldt A
; Letson HL
; Dobson GP
; Shi W
; Vinten-Johansen J
; Tønnesen E
Crit Care
2014[Dec]; 18
(6
): 682
PMID25497775
show ga
INTRODUCTION: The combination of Adenosine (A), lidocaine (L) and Mg(2+) (M)
(ALM) has demonstrated cardioprotective and resuscitative properties in models of
cardiac arrest and hemorrhagic shock. This study evaluates whether ALM also
demonstrates organ protective properties in an endotoxemic porcine model.
METHODS: Pigs (37 to 42 kg) were randomized into: 1) Control (n = 8) or 2) ALM (n
= 8) followed by lipopolysaccharide infusion (1 ?g ? kg(-1) ? h(-1)) for five
hours. ALM treatment consisted of 1) a high dose bolus (A (0.82 mg/kg), L (1.76
mg/kg), M (0.92 mg/kg)), 2) one hour continuous infusion (A (300 ?g ? kg(-1) ?
min(-1)), L (600 ?g ? kg(-1) ? min(-1)), M (336 ?g ? kg(-1) ? min(-1))) and three
hours at a lower dose (A (240 ? kg(-1) ? min(-1)), L (480 ?g ? kg(-1) ? min(-1)),
M (268 ?g ? kg(-1) ? min(-1))); controls received normal saline. Hemodynamic,
cardiac, pulmonary, metabolic and renal functions were evaluated. RESULTS: ALM
lowered mean arterial pressure (Mean value during infusion period: ALM: 47 (95%
confidence interval (CI): 44 to 50) mmHg versus control: 79 (95% CI: 75 to 85)
mmHg, P < 0.0001). After cessation of ALM, mean arterial pressure immediately
increased (end of study: ALM: 88 (95% CI: 81 to 96) mmHg versus control: 86 (95%
CI: 79 to 94) mmHg, P = 0.72). Whole body oxygen consumption was significantly
reduced during ALM infusion (ALM: 205 (95% CI: 192 to 217) ml oxygen/min versus
control: 231 (95% CI: 219 to 243) ml oxygen/min, P = 0.016). ALM treatment
reduced pulmonary injury evaluated by PaO2/FiO2 ratio (ALM: 388 (95% CI: 349 to
427) versus control: 260 (95% CI: 221 to 299), P = 0.0005). ALM infusion led to
an increase in heart rate while preserving preload recruitable stroke work.
Creatinine clearance was significantly lower during ALM infusion but reversed
after cessation of infusion. ALM reduced tumor necrosis factor-? peak levels (ALM
7121 (95% CI: 5069 to 10004) pg/ml versus control 11596 (95% CI: 9083 to 14805)
pg/ml, P = 0.02). CONCLUSION: ALM infusion induces a reversible hypotensive and
hypometabolic state, attenuates tumor necrosis factor-? levels and improves
cardiac and pulmonary function, and led to a transient drop in renal function
that was reversed after the treatment was stopped.