Heart rate during haemorrhagic shock
1992; Wiley; Volume: 12; Issue: 6 Linguagem: Inglês
10.1111/j.1475-097x.1992.tb00369.x
ISSN1365-2281
AutoresJohn R. Jacobsen, Niels H. Secher,
Tópico(s)Heart Rate Variability and Autonomic Control
ResumoSummary. In a prospective study, heart rate and mean arterial pressure were related to estimated blood loss in 34 consecutive patients aged 23–92 years during resuscitation from haemorrhagic shock. Eighteen patients with a blood loss of less than 31 (1.9 [0.9‐3.0] 1) (median and range), corresponding to 34 (16–46) % of estimated blood volume, had a heart rate of 83 (60–160) beats min ‐1 and a mean arterial pressure of 62 (35–73) mmHg. In 16 patients with a blood loss of more than 3 1 (4.0 [3.3–5.0] 1) corresponding to 89 (35–100) % of the estimated blood volume, heart rate was 120 (110–160) beats min ‐1 ( P <0.05) and mean arterial pressure 52 (0–70) mmHg ( P< 0.05). Six patients died due to severe bleeding (3.1 [2.5‐5.0] 1) with a heart rate of 129 (110–160) beats min ‐1 and a mean arterial pressure of 40 (0.70) mmHg. It is concluded that reversible hypovolemic shock is associated with a relatively low heart rate (approximately 80 beats min ‐1 ) and that tachycardia (approximately 120 beats min ‐1 ) is associated with profound bleeding. Hypovolemic shock with tachycardia may represent a transition to an irreversible stage.
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