Acute, severe hypovolemia is a medical emergency. Traditional vital sign parameters allow no optimal triage. High predictive power of finger plethysmography-based stroke volume (SV) and pulse pressure (PP) was recently suggested. To assess the performance of the PP and SV parameters, lower body negative pressure of −40 mmHg, than −60 mmHg — corresponding to moderate and severe central hypovolemia — was applied in 22 healthy males (age 35 ± 7 years). Slow breathing induced fluctuations in the above indices, characterized by stroke volume variability (SVV), and pulse pressure variability (PPV), were assessed. Responses in heart rate (HR) and shock index (SI) were also studied. Discriminative capacity of these parameters was characterized by the area under the ROC (receiver operating characteristic) curves (AUC).
In comparison of baseline to severe central hypovolemia SV, PP, HR and SI showed good discriminating capacity (AUC 99%, 88%, 87% and 93%, respectively). The discriminating capacity of SVV and PPV was poor (77% and 70%, respectively). In comparison of moderate and severe hypovolemia, the discriminating capacity of the studied parameters was uniformly limited.
Plethysmography-based SV and PP parameters can be used to detect acute severe volume loss. Sensitive parameters discriminating moderate and severe central hypovolemia are still lacking.
Birkhahn RH , Gaeta TJ, Terry D, Bove JJ, Tloczkowski J: Shock index in diagnosing acute hypovolemia. Am. J. Emerg. Med. 23 (3), 323–326 (2005)
Carrico CJ , Holcomb JB, Chaudry IH: PULSE Trauma Work Group: Scientific priorities and strategic planning for resuscitation research and life saving therapy following traumatic injury: report of the PULSE Trauma Work Group. Acad. Emerg. Med. 9 (6), 621–626 (2002))
Convertino VA , Cooke WH: Relationship between stroke volume and sympathetic nerve activity: new insights about autonomic mechanisms of syncope. J. Gravit. Physiol. 9 (1), P63–P66 (2002)
Convertino VA , Cooke WH, Holcomb JB: Arterial pulse pressure and its association with reduced stroke volume during progressive central hypovolemia. J. Trauma 61 (3), 629–634 (2006)
Convertino VA , Ryan KL, Rickards CA, Salinas J, McManus JG, Cooke WH, Holcomb JB: Physiological and medical monitoring for en route care of combat casualties. J. Trauma 64 (4 Suppl), S342–S353 (2008)
Convertino VA , Rickards CA, Lurie KG, Ryan KL: Hyperventilation in response to progressive reduction in central blood volume to near syncope. Aviat. Space Environ. Med. 80 (12), 1012–1017 (2009)
Convertino VA , Moulton SL, Grudic GZ, Rickards CA, Hinojosa-Laborde C, Gerhardt RT, Blackbourne LH, Ryan KL: Use of advanced machine-learning techniques for noninvasive monitoring of hemorrhage. J. Trauma 71 (1 Suppl), S25–S32 (2011)
Cooke WH , Cox JF, Diedrich AM, Taylor JA, Beightol LA, Ames JE 4th, Hoag JB, Seidel H, Eckberg DL: Controlled breathing protocols probe human autonomic cardiovascular rhythms. Am. J. Physiol. 274 (2 Pt 2), H709–H718 (1998)
Cooke WH , Ryan KL, Convertino VA: Lower body negative pressure as a model to study progression to acute hemorrhagic shock in humans. J. Appl. Physiol. 96 (4), 1249–1261 (2004)
Cooke WH , Salinas J, Convertino VA, Ludwig DA, Hinds D, Duke JH, Moore FA, Holcomb JB: Heart rate variability and its association with mortality in prehospital trauma patients. J. Trauma 60 (2), 363–370 (2006)
De Backer D , Heenen S, Piagnerelli M, Kock M, Vincent JL: Pulse pressure variations to predict fluid responsiveness: influence of tidal volume. Intensive Care Med. 31 (4), 517–523 (2005)
Kelly JF , Ritenour AE, McLaughlin DF, Bagg KA, Apodaca AN, Mallak CT, Pearse L, Lawnick MM, Champion HR, Wade CE, Holcomb JB: Injury severity and causes of death from Operation Iraqi Freedom and Operation Enduring Freedom: 2003–2004 versus 2006. J. Trauma 64 (2 Suppl), S21–S27 (2008)
McGee S , Abernethy WB, Simel DL: The rational clinical examination. Is this patient hypovolemic?. JAMA 281 (11), 1022–1029 (1999)
Michard F , Chemla D, Richard C, Wysocki M, Pinsky MR, Lecarpentier Y, Teboul JL: Clinical use of respiratory changes in arterial pulse pressure to monitor the hemodynamic effects of PEEP. Am. J. Resp. Crit. Care Med. 159 (3), 935–939 (1999)
Michard F , Boussat S, Chemla D, Anguel N, Mercat A, Lecarpentier Y, Richard C, Pinsky MR, Teboul JL: Relation between respiratory changes in arterial pulse pressure and fluid responsiveness in septic patients with acute circulatory failure. Am. J. Resp. Crit. Care Med. 162 (1), 134–138 (2000)
Nowak RM , Garcia AJ, Wilkie H, Yang JJ, Nowak MR, Moyer ML: Noninvasive continuous or intermittent blood pressure and heart rate patient monitoring in the ED. Am. J. Emerg. Med. 29 (7), 782–789 (2011)
Olsen H , Vernersson E, Länne T: Cardiovascular response to acute hypovolemia in relation to age. Implications for orthostasis and hemorrhage. Am. J. Physiol. 278 (1), H222–H232 (2000)
Penttilä J , Snapir A, Kentala E, Koskenvuo J, Post J, Scheinin M, Scheinin H, Kuusela T: Estimation of cardiac output in a pharmacological trial using a simple method based on arterial blood pressure signal waveform: A comparison with pulmonary thermodilution and echocardiographic methods. Eur. J. Clin. Pharmacol. 62 (6), 401–407 (2006)
Perel A , Pizov R, Cotev S: Systolic blood pressure variation is a sensitive indicator of hypovolemia in ventilated dogs subjected to graded hemorrhage. Anesthesiology 67 (4), 498–502 (1987)
Reisner AT , Xu D, Ryan KL, Convertino VA, Rickards CA, , Mukkamala R: Monitoring non-invasive cardiac output and stroke volume during experimental human hypovolaemia and resuscitation. Br. J. Anesth. 106 (1), 23–30 (2011)
Remmen JJ , Angevaeren WRM, Verheugt FWA, van der Werf T, Luijten HE, Jansen RWMM: Finapres arterial pulse wave analysis with the Modelflow is not a reliable non-invasive method for assessment of cardiac output. Clin. Sci. 103 (2), 143–149 (2002)
Renner J , Cavus E, Meybohm P, Tonner P, Steinfath M, Scholz J, Lutter G, Bein B: Stroke volume variation during hemorrhage and after fluid loading: impact of different tidal volumes. Acta Anesthesiol. Scand. 51 (5), 538–544 (2007)
Reuter DA , Felbinger TW, Kilger E, Schmidt C, Lamm P, Goetz AE: Optimizing fluid therapy in mechanically ventilated patients after cardiac surgery by on-line monitoring of left ventricular stroke volume variations. Comparison with aortic systolic pressure variations. Br. J. Anaesth. 88 (1), 124–126 (2006)
Reuter DA , Bayerlein J, Goepfert MSG, Weis FC, Kliger E, Lamm P, Goetz AE: Influence of tidal volume on left ventricular stroke volume variation measured by pulse contour analysis in mechanically ventilated patients. Intensive Care Med. 29 (3), 476–480 (2003)
Sauaia A , Moore FA, Moore EE, Moser KS, Brennan R, Read RA, Pons PT: Epidemiology of trauma deaths: a reassessment. J. Trauma 38 (2), 411–417 (1995)
Shi X , Huang G, Smith SA, Zhang R, Formes KJ: Aging and arterial blood pressure variability during orthostatic challenge. Gerontology 49 (5), 279–286 (2003)
Szold A , Pizov E, Perel A: The effect of tidal volume and intravascular volume state on systolic pressure variation in ventilated dogs. Intensive Care Med. 15 (6), 368–371 (1989
Van Hoeyweghen R , Hanson J, Stewart MJ, DethuneL, Davies I, Little RA, Horan MA, Kirkman E: Cardiovascular responses to graded lower body negative pressure in young and elderly man. Exp. Physiol. 86 (3), 427–435 (2001)