Table 3.

Mean, Standard Deviation, Median, and Range of Zone Diameters (mm) for Essential Oils Against Gram-Negative, Carbapenem-Susceptible Clinical Isolates

Species (n)OreganoThymeManukaCloveTea TreeThievesMeropenem
ESBL Escherichia coli (19)Cinnamon Bark
Mean (SD)23.6 (0.84)26.8 (1.69)29.7 (0.82)19.7 (1.34)12.8 (0.63)9.4 (0.52)18.8 (1.81)30.0 (1.81)
Median, range23, 226, 530, 320, 413, 29, 118, 130, 7
ESBL Klebsiella pneumoniae (7)
Mean (SD)21.3 (3.50)15.4 (1.27)22.3 (1.60)6.0 (0)10.7 (1.38)14.4 (0.79)11.6 (1.41)30.3 (0.95)
Median, range23, 1015, 1922, 56, 010, 415, 212, 330, 3
Enterobacter spp (10)
Mean (SD)18.5 (5.15)14.8 (5.60)22.3 (4.08)6.3 (0.48)9.8 (2.44)13.6 (3.27)11.5 (3.10)26.4 (4.86)
Median, range20.5, 1420.5, 1421, 146, 110, 814.5, 1211, 1027, 17
Pseudomonas aeruginosa (4)
Mean (SD)13.0 (11.27)11.0 (7.81)28.5 (13.08)10.0 (6.16)11.0 (5.83)8.5 (3.0)13.8 (6.24)12.8 (2.22)
Median, range20, 77, 1427.5, 277.5, 1310.5, 118, 614, 1313, 5
Species (n)OreganoThymeManukaCloveTea TreeThievesMeropenem
ESBL Escherichia coli (19)Cinnamon Bark
Mean (SD)23.6 (0.84)26.8 (1.69)29.7 (0.82)19.7 (1.34)12.8 (0.63)9.4 (0.52)18.8 (1.81)30.0 (1.81)
Median, range23, 226, 530, 320, 413, 29, 118, 130, 7
ESBL Klebsiella pneumoniae (7)
Mean (SD)21.3 (3.50)15.4 (1.27)22.3 (1.60)6.0 (0)10.7 (1.38)14.4 (0.79)11.6 (1.41)30.3 (0.95)
Median, range23, 1015, 1922, 56, 010, 415, 212, 330, 3
Enterobacter spp (10)
Mean (SD)18.5 (5.15)14.8 (5.60)22.3 (4.08)6.3 (0.48)9.8 (2.44)13.6 (3.27)11.5 (3.10)26.4 (4.86)
Median, range20.5, 1420.5, 1421, 146, 110, 814.5, 1211, 1027, 17
Pseudomonas aeruginosa (4)
Mean (SD)13.0 (11.27)11.0 (7.81)28.5 (13.08)10.0 (6.16)11.0 (5.83)8.5 (3.0)13.8 (6.24)12.8 (2.22)
Median, range20, 77, 1427.5, 277.5, 1310.5, 118, 614, 1313, 5

Abbreviations: ESBL, extended-spectrum beta-lactamase-producing; SD, standard deviation.

Table 3.

Mean, Standard Deviation, Median, and Range of Zone Diameters (mm) for Essential Oils Against Gram-Negative, Carbapenem-Susceptible Clinical Isolates

Species (n)OreganoThymeManukaCloveTea TreeThievesMeropenem
ESBL Escherichia coli (19)Cinnamon Bark
Mean (SD)23.6 (0.84)26.8 (1.69)29.7 (0.82)19.7 (1.34)12.8 (0.63)9.4 (0.52)18.8 (1.81)30.0 (1.81)
Median, range23, 226, 530, 320, 413, 29, 118, 130, 7
ESBL Klebsiella pneumoniae (7)
Mean (SD)21.3 (3.50)15.4 (1.27)22.3 (1.60)6.0 (0)10.7 (1.38)14.4 (0.79)11.6 (1.41)30.3 (0.95)
Median, range23, 1015, 1922, 56, 010, 415, 212, 330, 3
Enterobacter spp (10)
Mean (SD)18.5 (5.15)14.8 (5.60)22.3 (4.08)6.3 (0.48)9.8 (2.44)13.6 (3.27)11.5 (3.10)26.4 (4.86)
Median, range20.5, 1420.5, 1421, 146, 110, 814.5, 1211, 1027, 17
Pseudomonas aeruginosa (4)
Mean (SD)13.0 (11.27)11.0 (7.81)28.5 (13.08)10.0 (6.16)11.0 (5.83)8.5 (3.0)13.8 (6.24)12.8 (2.22)
Median, range20, 77, 1427.5, 277.5, 1310.5, 118, 614, 1313, 5
Species (n)OreganoThymeManukaCloveTea TreeThievesMeropenem
ESBL Escherichia coli (19)Cinnamon Bark
Mean (SD)23.6 (0.84)26.8 (1.69)29.7 (0.82)19.7 (1.34)12.8 (0.63)9.4 (0.52)18.8 (1.81)30.0 (1.81)
Median, range23, 226, 530, 320, 413, 29, 118, 130, 7
ESBL Klebsiella pneumoniae (7)
Mean (SD)21.3 (3.50)15.4 (1.27)22.3 (1.60)6.0 (0)10.7 (1.38)14.4 (0.79)11.6 (1.41)30.3 (0.95)
Median, range23, 1015, 1922, 56, 010, 415, 212, 330, 3
Enterobacter spp (10)
Mean (SD)18.5 (5.15)14.8 (5.60)22.3 (4.08)6.3 (0.48)9.8 (2.44)13.6 (3.27)11.5 (3.10)26.4 (4.86)
Median, range20.5, 1420.5, 1421, 146, 110, 814.5, 1211, 1027, 17
Pseudomonas aeruginosa (4)
Mean (SD)13.0 (11.27)11.0 (7.81)28.5 (13.08)10.0 (6.16)11.0 (5.83)8.5 (3.0)13.8 (6.24)12.8 (2.22)
Median, range20, 77, 1427.5, 277.5, 1310.5, 118, 614, 1313, 5

Abbreviations: ESBL, extended-spectrum beta-lactamase-producing; SD, standard deviation.

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