Subarachnoid hemorrhage laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]

Overview

A lumbar puncture (removal of cerebrospinal fluid/CSF with a needle from the lumbar sac under local anesthetic) will identify another 3% of the cases by demonstrating xanthochromia (yellow appearance of centrifugated fluid) or bilirubin (a breakdown product of hemoglobin) in the CSF.

Laboratory findings

Laboratory findings for intracerebral hemorrhage may include the following:^[1]


Blood test	Test result	Rationale
Complete blood count and platelet	Leukocytosis Polycythemia Thrombocytopenia	Monitor for infection Assess hematocrit and platelet count to identify hemorrhagic risk and complications
BMP/Osmolarity	Increased or decreased serum NA2+, K+, Ca2+ Change in osmolarity	Monitor osmolarity for guidance of osmotic diuresis
PT/APTT/INR^[2]^[3]^[4]	Increased PT/APTT/INR	Identify a coagulopathy
BUN/Creatinine^[5]	Increased BUN and creatinine	May be associated with poor prognosis in patients with intracerebral hemorrhage and hematoma expansion
Toxicology screen/Serum alcohol level	Increased levels of serum	Identify illicit drug use or excessive alcohol Identify exogenous toxins that can cause intracerebral hemorrhage (ICH)
Lipid profile	Decreased levels of lipids	Associated with higher incidence of ICH
Blood glucose levels^[6]	Increased or decreased levels of blood glucose	May be associated with poor prognosis in patients with Intracerebral hemorrhage
Cardiac enzymes^[7]^[8]	Increased serum levels of Trop I, Trop T, CK-MB	May suggest ongoing myocardial ischemia (left ventricular ischemia)
Pregnancy test	Serum and urine B-HCG	Rule out pregnancy in all female patients with hemorrhagic stroke

References

↑ Broderick J, Connolly S, Feldmann E, Hanley D, Kase C, Krieger D; et al. (2007). "Guidelines for the management of spontaneous intracerebral hemorrhage in adults: 2007 update: a guideline from the American Heart Association/American Stroke Association Stroke Council, High Blood Pressure Research Council, and the Quality of Care and Outcomes in Research Interdisciplinary Working Group". Stroke. 38 (6): 2001–23. doi:10.1161/STROKEAHA.107.183689. PMID 17478736.
↑ Cucchiara B, Messe S, Sansing L, Kasner S, Lyden P, CHANT Investigators (2008). "Hematoma growth in oral anticoagulant related intracerebral hemorrhage". Stroke. 39 (11): 2993–6. doi:10.1161/STROKEAHA.108.520668. PMID 18703803.
↑ Broderick JP, Diringer MN, Hill MD, Brun NC, Mayer SA, Steiner T; et al. (2007). "Determinants of intracerebral hemorrhage growth: an exploratory analysis". Stroke. 38 (3): 1072–5. doi:10.1161/01.STR.0000258078.35316.30. PMID 17290026.
↑ Flaherty ML, Tao H, Haverbusch M, Sekar P, Kleindorfer D, Kissela B; et al. (2008). "Warfarin use leads to larger intracerebral hematomas". Neurology. 71 (14): 1084–9. doi:10.1212/01.wnl.0000326895.58992.27. PMC 2668872. PMID 18824672.
↑ Miller CM, Vespa PM, McArthur DL, Hirt D, Etchepare M (2007). "Frameless stereotactic aspiration and thrombolysis of deep intracerebral hemorrhage is associated with reduced levels of extracellular cerebral glutamate and unchanged lactate pyruvate ratios". Neurocrit Care. 6 (1): 22–9. doi:10.1385/NCC:6:1:22. PMID 17356187.
↑ Sawyer GJ, Fabre JW (1997). "Indirect T-cell allorecognition and the mechanisms of immunosuppression by allogeneic blood transfusions". Transpl Int. 10 (4): 276–83. PMID 9249937.
↑ Davis AM, Natelson BH (1993). "Brain-heart interactions. The neurocardiology of arrhythmia and sudden cardiac death". Tex Heart Inst J. 20 (3): 158–69. PMC 325088. PMID 8219819.
↑ Hasegawa K, Fix ML, Wendell L, Schwab K, Ay H, Smith EE; et al. (2012). "Ischemic-appearing electrocardiographic changes predict myocardial injury in patients with intracerebral hemorrhage". Am J Emerg Med. 30 (4): 545–52. doi:10.1016/j.ajem.2011.02.007. PMC 3684165. PMID 21450435.

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[pmid17478736-1] Broderick J, Connolly S, Feldmann E, Hanley D, Kase C, Krieger D; et al. (2007). "Guidelines for the management of spontaneous intracerebral hemorrhage in adults: 2007 update: a guideline from the American Heart Association/American Stroke Association Stroke Council, High Blood Pressure Research Council, and the Quality of Care and Outcomes in Research Interdisciplinary Working Group". Stroke. 38 (6): 2001–23. doi:10.1161/STROKEAHA.107.183689. PMID 17478736.

[pmid18703803-2] Cucchiara B, Messe S, Sansing L, Kasner S, Lyden P, CHANT Investigators (2008). "Hematoma growth in oral anticoagulant related intracerebral hemorrhage". Stroke. 39 (11): 2993–6. doi:10.1161/STROKEAHA.108.520668. PMID 18703803.

[pmid17290026-3] Broderick JP, Diringer MN, Hill MD, Brun NC, Mayer SA, Steiner T; et al. (2007). "Determinants of intracerebral hemorrhage growth: an exploratory analysis". Stroke. 38 (3): 1072–5. doi:10.1161/01.STR.0000258078.35316.30. PMID 17290026.

[pmid18824672-4] Flaherty ML, Tao H, Haverbusch M, Sekar P, Kleindorfer D, Kissela B; et al. (2008). "Warfarin use leads to larger intracerebral hematomas". Neurology. 71 (14): 1084–9. doi:10.1212/01.wnl.0000326895.58992.27. PMC 2668872. PMID 18824672.

[pmid17356187-5] Miller CM, Vespa PM, McArthur DL, Hirt D, Etchepare M (2007). "Frameless stereotactic aspiration and thrombolysis of deep intracerebral hemorrhage is associated with reduced levels of extracellular cerebral glutamate and unchanged lactate pyruvate ratios". Neurocrit Care. 6 (1): 22–9. doi:10.1385/NCC:6:1:22. PMID 17356187.

[pmid9249937-6] Sawyer GJ, Fabre JW (1997). "Indirect T-cell allorecognition and the mechanisms of immunosuppression by allogeneic blood transfusions". Transpl Int. 10 (4): 276–83. PMID 9249937.

[pmid8219819-7] Davis AM, Natelson BH (1993). "Brain-heart interactions. The neurocardiology of arrhythmia and sudden cardiac death". Tex Heart Inst J. 20 (3): 158–69. PMC 325088. PMID 8219819.

[pmid21450435-8] Hasegawa K, Fix ML, Wendell L, Schwab K, Ay H, Smith EE; et al. (2012). "Ischemic-appearing electrocardiographic changes predict myocardial injury in patients with intracerebral hemorrhage". Am J Emerg Med. 30 (4): 545–52. doi:10.1016/j.ajem.2011.02.007. PMC 3684165. PMID 21450435.

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Subarachnoid hemorrhage laboratory findings

Overview

Laboratory findings

References

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