Home About us Current issue Back issues Submission Instructions Advertise Contact Login   

Search Article 
  
Advanced search 
 
Saudi Journal of Kidney Diseases and Transplantation
Users online: 273 Home Bookmark this page Print this page Email this page Small font sizeDefault font size Increase font size 
 

LETTER TO EDITOR Table of Contents   
Year : 2002  |  Volume : 13  |  Issue : 4  |  Page : 512-514
Does Dopamine Still Deserve to be Prescribed in "Renal Dose" to the Critically ill?


Post-Graduate Department of Medicine, King Fahad Hospital, Hofuf, Al-Hasa-31982, Saudi Arabia

Click here for correspondence address and email
 

How to cite this article:
Saxena AK. Does Dopamine Still Deserve to be Prescribed in "Renal Dose" to the Critically ill?. Saudi J Kidney Dis Transpl 2002;13:512-4

How to cite this URL:
Saxena AK. Does Dopamine Still Deserve to be Prescribed in "Renal Dose" to the Critically ill?. Saudi J Kidney Dis Transpl [serial online] 2002 [cited 2020 Nov 30];13:512-4. Available from: https://www.sjkdt.org/text.asp?2002/13/4/512/35803
To the Editor:

Despite persistent reservations expressed by various authors from time to time, parti­cularly during the past ten years, dopamine "renal dose" continues to be administered very frequently to critically ill patients. The use of dopamine is not only for improving the state of circulatory distribution in imminent cadiogenic shock, but also for the prevention of declining and/or improvement of renal perfusion in diverse medical and surgical conditions and in high-risk proce­dures, in the hope of avoiding the menacing development of acute renal failure (ARF). The far-reaching global use of dopamine as a "renal protective" agent in critically ill patients is based on physiology suggesting selective renal vasodilatation in animal models and human subjects when it is infused at low-dose, the "renal-dose". [1],[3] Earlier studies [4],[7] involving small patient populations had reported consistent apparent increases in fractional excretion of sodium (FeNa), and urine output following "low­dose" dopamine administration with or without co-administration of diuretics. Since urine output is an erroneous marker of glomerular filtration rate (GFR), and simul­taneous administration of diuretics may have a confounding influence on FeNa, these studies offer only meager data to support the use of dopamine in the management of ARF. Denton et al (1996) concluded that renal-dose of dopamine should not be used for its selective renal vasodilatory effect in patients with ARF until its effectiveness is established decisively. [8]

Dopamine exerts its action on the cardio­vascular and renal neuro-humoral system by acting on a number of different receptors that have diverse actions making its effects extremely complicated. Dopamine stimulates beta-adrenoreceptors and increases the cardiac index. [9] High-dose dopamine interacts with peripheral alpha-one-adrenoreceptors causing systemic vasoconstriction. [1] In addition, it acts on peripheral receptors with their sub­groups, DAi and DA2. DAi receptors have been recognized on renal, mesenteric, coronary and cerebral arteries while DA2 receptors, on autonomic ganglia and sympathetic nerve endings where they inhibit noradrenaline release. [11] DAi receptor-related vasodilatation and inhibition of electrolyte transport is mediated by cAMP. DA2 receptors inhibit aldosterone production in the adrenal gland. [9] In the inner medulla, DA2 receptor is linked to stimulation of prostaglandin E2 production, apparently due to stimulation of phospho­lipase A2. [11] However, the precise role of DA2 receptors remains unclear. Dopamine directly stimulates sodium uptake in proximal tubular cells; this implies that the natriuretic effect of dopamine is due to alterations in hemodynamics and distal tubular effects. Dopamine has been hypothesized to act as intrarenal natriuretic hormone. In view of the complexity of dopamine's actions, it is not surprising that there is an overlap of doses at which a range of effects of dopamine are seen concurrently and no dose could actually be absolutely renal in action.

Low-dose dopamine (0.5-3.0 ug/kg/min) infusion in normal human subjects has been reported to enhance renal blood flow (RBF) and GFR by stimulation of DA] receptors. [12] Nonetheless, Vargo et al, [13] found no significant change in GFR in their recent randomized, controlled, crossover trials. For these reasons, the authenticated evidence of low-dose dopamine-induced alteration of GFR in man is inconsistent.

Moreover, randomized controlled trials have failed to demonstrate a better outcome of dopamine use with respect to prevention of ARF, requirement for dialysis and resultant mortality in various clinical settings. The Auriculin Anaritide Acute Renal Failure Study [14] Group USA, in 1997, conducted a randomized placebo controlled multicentre trial that included 250 patients with ARF to examine the relationship between low-dose dopamine administration and outcomes of ARF. There were 93 (36%) deaths docu­mented; 52 (20%) required dialysis during 60 days study period despite being on renal dose dopamine. The relative risk (RR) of death associated with dopamine adminis­tration was 1.11 (95% Confidence Interval­0.66 to 1.89) raising reservations concerning its safety and efficacy. Similarly, the NORASEPT II Study, [15] USA (1999), in their controlled, randomized multicenter trial concluded that dopamine "renal-dose" does not prevent ARF in patients with septic shock and oliguria.

More recently, Kellum et al, [16] performed a meta-analysis of 58 studies (n=1019) from 1966 to 2000 including 17 randomized clinical trials (n=854) and reported that renal-dose dopamine did not reduce mortality (RR, 0.90 [0.44-1.83]; p=0.92), onset of renal failure [RR, 0.81 (0.55-1.19)] or need for dialysis [RR, 0.83 (0.55-1.24]. They concluded that there was insufficient statistical evidence to support any large (>50%) effect of dopamine on risk of ARF or need for dialysis and so this drug ought to be eliminated from routine clinical use.

A recent randomized, double blind, placebo controlled, multicenter study was carried out by the Australian and New Zealand Intensive Care Society clinical trial group. [17] They studied 328 patients admitted to 23 participating intensive care unit (ICU), randomly assigned to continuous intravenous infusion of dopamine (2 jag/kg/min) or placebo, administered through a central venous catheter (CVC) while in the ICU. The patients' assigned to dopamine (n=161) and those assigned to placebo (n=163), were similar in terms of baseline characteristics, renal function and duration of trial infusion. No difference between the dopamine and placebo groups was found in peak serum creatinine concentration during the treatment, in the increase from baseline to highest value during treatment, or in numbers of patients whose serum creatinine concentration exceeded 300 jimol/L or who required renal replacement therapy. Sixty-nine patients in the dopamine group and 66 in the placebo group died. The authors concluded that administration of low-dose dopamine by continuous infusion does not confer any protection from renal dysfunction in ICU. The credence of evidence currently reachable goes compellingly against the very existence of "renal-dose dopamine and its role as "renal protective" agent. In addition, there is apprehension related to impending adverse effects " ranging from local tissue necrosis to suppression of anterior pituitary dependent hormones and decline in T-cell proliferation through cardio-respiratory dysfunction. These factors demand the exclusion of so called "renal dose" of dopamine from regular clinical use, especially amongst critically ill individuals, with endangered metabolic and immunologic homeostasis[20].

 
   References Top

1.Trim CM, Moore JN, Clark ES. Renal effects of dopamine infusion in conscious horses. Equine Vet J Suppl 1989;7:124-8.  Back to cited text no. 1    
2.Me Nay JL, Me Donald RH, Goldberg LI. Direct renal vasodilatation produced by dopamine in dog. Circ Res 1965; 16:510-7.  Back to cited text no. 2    
3.McDonald RH, Goldberg LI, McNay JL, Turtle EP. Effects of dopamine in man: augmentation of sodium excretion, glome­rular filtration rate and renal plasma flow. J Clin Invest 1964;43:1116-24.  Back to cited text no. 3    
4.Hegde SS, Lokhandwala MF. Renal dopa­mine and sodium excretion. Am J Hypertens 1990;3:78S-81S.  Back to cited text no. 4    
5.Davis RF, Lappas DG, Kirklin JK, Buckley MJ, Lowenstein E. Acute oliguria after cardiopulmonary bypass: renal functional improvement with low dose dopamine infusion. Crit Care Med 1994;22:61-6.  Back to cited text no. 5    
6.Henderson IS, Beattie TJ, Kennedy AC. Dopamine hydrochloride in oliguric states. Lancet 1980;2:827-8.  Back to cited text no. 6    
7.Lindner A. Synergism of dopamine and furosemide in diuretic-resistant, oliguric acute renal failure. Nephron 1983;33:121-6.  Back to cited text no. 7    
8.Graziani G, Cantaluppi A, Casate S. Dopamine and furosemide in oliguric acute renal failure. Nephron 1984;37:39-42.  Back to cited text no. 8    
9.Denton MD, Chertow GM, Brady HR. "Renal dose" dopamine for the treatment of acute renal failure: scientific rationale, experimental studies and clinical trials. Kidney Int 1996;50:4-14.  Back to cited text no. 9    
10.Goldberg LI. Cardiovascular and renal actions of dopamine: potential clinical applications. Pharmacol Rev 1972;24:1-29.  Back to cited text no. 10    
11.Olsen NV. Effect of dopamine on renal hemodynamics, tubular function and sodium excretion in normal humans. Dan Med Bull 1998;45:282-97.  Back to cited text no. 11    
12.Asico LD, Eisner GM, Jose PA. Renal nerves and Dl dopamine receptor mediated natriu­resis. Clin Exp Hypertens 1998;20:259-71.  Back to cited text no. 12    
13.Jose PA, Raymond JR, Bates MD, Aperia A, Felder RA, Carey RM. The renal dopamine receptors. J Am Soc Nephrol 1992;2:1265-78.  Back to cited text no. 13    
14.Vargo DL, Brater DC, Rudy DW, Swan SK. Dopamine does not enhance furosemide­induced natriuresis in patients with conges­tive heart failure. J Am Soc Nephrol 1996; 7:1032-7.  Back to cited text no. 14    
15.Chertow GM, Sayegh MH, Allgren RL, Lazarus JM. Is the administration of dopamine associated with adverse or favorable outcomes in acute renal failure? Auriculin Anaritide Acute Renal Failure Study (AAARFS) Group. Am J Med 1997;102: 320-22.  Back to cited text no. 15    
16.Marik PE, Iglesias J. Low dose dopamine does not prevent acute renal failure in patients with septic shock and oliguria. NORASEPT II Study Investigators. Am J Med 1999;107:387-90.  Back to cited text no. 16    
17.Kellum JA, Dekker MJ. Use of dopamine in acute renal failure: a meta analysis. Crit Care Med 2001;29:1526-31.  Back to cited text no. 17    
18.Bellomo R, Chapman M, Finfer S, Hickling K, Myburgh J. Low dose dopamine in patients with early renal dysfunction: a placebo con­trolled randomized trial. Australian and New Zealand Intensive Care Society (ANZICS) Clinical Trial Group. Lancet 2000;356:2139-3.  Back to cited text no. 18    
19.De Werra P, Bracco D. Renal protective dose of dopamine: Myth or Reality? Rev Med Suisse Romande 1999; 119:203-8.  Back to cited text no. 19    
20.Thompson BT, Cockrill BA. Renal-dose dopamine: a siren song? Lancet 1994;344:7-8.  Back to cited text no. 20    

Top
Correspondence Address:
Anil K Saxena
Post-Graduate Department of Medicine, King Fahad Hospital, Hofuf, Al-Hasa-31982
Saudi Arabia
Login to access the Email id


Rights and Permissions




 

Top
 
 
    Similar in PUBMED
    Search Pubmed for
    Search in Google Scholar for
    Email Alert *
    Add to My List *
* Registration required (free)  
 


 
    References
 

 Article Access Statistics
    Viewed2463    
    Printed66    
    Emailed0    
    PDF Downloaded219    
    Comments [Add]    

Recommend this journal