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Heffner AC, Swords DS, Neale MN, Jones AE. Incidence and factors associated with cardiac arrest complicating emergency airway management. Resuscitation. 2013;84(11):1500–1504.

Berger T, Green J, Horeczko T, et al. Shock Index and Early Recognition of Sepsis in the Emergency Department: Pilot Study. WestJEM. 2013;14(2):168–174.

ProCESS Investigators, Yealy DM, Kellum JA, et al. A randomized trial of protocol-based care for early septic shock. N Engl J Med. 2014;370(18):1683–1693.

Acker SN, Ross JT, Partrick DA, Tong S, Bensard DD. Pediatric specific shock index accurately identifies severely injured children. J Pediatr Surg. 2015;50(2):331-4.

Schroll R, Swift D, Tatum D, et al. Accuracy of shock index versus ABC score to predict need for massive transfusion in trauma patients. Injury. 2018;49(1):15-19.

Al Jalbout N, Balhara KS, Hamade B, Hsieh YH, Kelen GD, Bayram JD. Shock index as a predictor of hospital admission and inpatient mortality in a US national database of emergency departments. Emerg Med J. 2019;36(5):293-297.

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Vandromme MJ, Griffin RL, Kerby JD, McGwin G Jr., Rue LW III, Weinberg JA. Identifying Risk for Massive Transfusion in the Relatively Normotensive Patient: Utility of the Prehospital Shock Index. J Trauma. 2011;70(2):384–390.

Mutschler M, Nienaber U, et al. The Shock Index revisited – a fast guide to transfusion requirement? A retrospective analysis on 21,853 patients derived from the TraumaRegister DGU®. Critical Care 2013, 17:R172 doi:10.1186/cc12851

Dr. Manuel Mutschler

var calc_output=[]; 
var u=parseInt(heart_rate)/parseInt(systolic_blood_pressure); 

calc_output.push({
    name:'mini',
    value:u.toFixed(1),
    value_text:' ',
    message:'Shock Index'
}); 
calc_output.push({
    name:'1316_Shock Index_result',
    value:u.toFixed(1),
    value_text:' ',
    message:'0.5-0.7 is believed to be a normal shock index. Higher numbers have been shown to be more sensitive than vital signs alone in diagnosing occult shock, need for transfusion and/or operation.'
});

Shock Index

heart_rate

systolic_blood_pressure

May be a more sensitive indicator of occult shock, especially in trauma or acute hemorrhage.

Sensitive indicator of occult shock.

Kamal (Kim) Medlej, MD, is an attending physician at the department of emergency medicine at Massachusetts General Hospital. He was born and raised in Beirut, Lebanon, then moved to Montreal to attend McGill University where he received his medical degree. He completed a residency in emergency medicine at St. Luke’s-Roosevelt Hospital Center in New York City and served as chief resident in his final year, followed by fellowship in critical care medicine at the Brigham and Women’s Hospital in Boston. Prior to joining the emergency department at MGH, Dr. Medlej was an attending physician in the emergency department of the American University of Beirut Medical Center in Lebanon then at Mount Sinai St. Luke's-West in New York City where he held appointments in both the emergency department and the division of pulmonary, critical care and sleep medicine. His areas of interest include emergency and critical care ultrasound, fluid management, non-invasive patient management, and the intersection of emergency medicine and critical care.

Kamal Medlej, MD

The Shock Index indicates level of occult shock, especially in trauma or acute hemorrhage, based on heart rate and systolic blood pressure.

Systolic BP

Heart Rate/Pulse

Shock Index, Pediatric Age-Adjusted (SIPA)

TASH Score

Palchak (UC Davis) Rule

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Calc Function