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Titolo:
DOES A HYPERTONIC SALINE LOAD PREDICT FLUID RETENTION IN PACING-INDUCED HEART-FAILURE
Autore:
FU YL; OBRIEN DW; CHAN SY; KAUFMAN S; MOE GW; ARMSTRONG PW;
Indirizzi:
UNIV TORONTO,ST MICHAELS HOSP,DEPT MED,DIV CARDIOL TORONTO ON M5B 1W8CANADA UNIV TORONTO,ST MICHAELS HOSP,DEPT MED,DIV CARDIOL TORONTO ON M5B 1W8CANADA UNIV ALBERTA,DEPT MED,DIV CARDIOL,WC MACKENZIE HLTH SCI CTR 2F130 EDMONTON AB T6G 2B7 CANADA
Titolo Testata:
Cardiovascular Research
fascicolo: 1, volume: 33, anno: 1997,
pagine: 172 - 180
SICI:
0008-6363(1997)33:1<172:DAHSLP>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
ATRIAL-NATRIURETIC-FACTOR; PLASMA ANGIOTENSIN-II; RENAL-FUNCTION; BODY-WATER; HORMONES; SODIUM; EDEMA; PATHOGENESIS; HEMODYNAMICS; PRESSURES;
Keywords:
HYPERTONIC SALINE; FLUID RETENTION; HEART FAILURE; ISOTONICITY; DOG, CONSCIOUS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
Y.L. Fu et al., "DOES A HYPERTONIC SALINE LOAD PREDICT FLUID RETENTION IN PACING-INDUCED HEART-FAILURE", Cardiovascular Research, 33(1), 1997, pp. 172-180

Abstract

Objective: We examined the response to hypertonic saline challenge (SC) as a potential predictor of fluid retention during heart failure induced by rapid ventricular pacing. Methods: Twelve dogs (22 +/- 4 kg) were given an intra-arterial bolus of 30 ml of 20% saline after establishing baseline fluid intake and urine output (24 h). Dogs were classified according to whether they drank mon (Group A) or less (Group B) than the amount required to dilute the SC to isotonicity. Fluid retention was then assessed Juring heart failure after rapid ventricular pacing according to a graded ordinal scale and correlated with the responses to SC. Results: No difference was noted in baseline fluid intake (1112 +/- 236 ml in Group A vs. 809 +/- 129 ml in Group B). Five hours after SC cumulative water intake was significantly greater in Group A than in Group B (1018 +/- 136 vs. 591 +/- 17 ml) (P < 0.01). Urine sodium concentration was 113 +/- 11 and 124 +/- 28 mmol/l at baseline in Group A and B, respectively; increased to 190 +/- 21 and 295 +/- 59 mmol/l at 5 h and remained elevated 24 h after SC, 177 +/- 60 and 274 +/-55 mmol/l (both P < 0.01 for within-group comparisons vs. baseline). Urine sodium concentration was less in Group A than in Group B at 5 and 24 h (P < 0.05). The fluid retention score was greater in Group A (3.6 +/- 0.5) than in Group B (0.8 +/- 0.4) (P < 0.01). Fluid retention in heart failure correlated with water intake after the pre-pacing SC (r = 0.68, P < 0.025) and inversely with urine concentrating ability (r = -0.58, P < 0.05). Furthermore, water intake and urine concentrating ability following thr SC were inversely related (r = -0.67, P < 0.02). Conclusions: Wt conclude that normal dogs may be classified according to their fluid intake after SC. Those dogs that drank excessively and produced a dilute urine were more likely to retain fluid during pacing-induced heart failure. Hence, fluid intake and the ability to excrete a concentrated urine after a saline challenge may be useful variables to predict fluid retention in pacing-induced heart failure.

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Documento generato il 03/07/20 alle ore 01:40:20