Table 1.

Characteristics of Study Population

CharacteristicPatients, No. (%)aP Value
All Mediastinitis (N = 151)PSM (n = 63 [41.7%])MEP (n = 60 [39.7%])DNM (n = 17 [11.3%])
Demographics
 Age, mean (SD), y63.3 (14.5)64.9 (11.8)65.6 (12.6)46.3 (18).002b
 Male sex109 (72.2)45 (71.4)40 (66.7)14 (82.4).33
 BMI, mean (SD)c27 (5.7)29.6 (5.9)24.4 (3.7)26.2 (6)<.001b
 Obesity (BMI >30)c31 (20.5)24 (38.1)4 (6.7)3 (17.6)
Chronic renal failure19 (12.6)14 (22.2)5 (8.3)0 (0).02b
Cardiovascular comorbid conditions
 Total no., mean (SD)2.4 (2)3.8 (1.9)1.5 (1.5)1 (1.5)<.001b
 High blood pressure78 (51.7)46 (73.0)25 (41.7)3 (17.6)<.001b
 Diabetes56 (37.1)39 (61.9)12 (20.0)3 (17.6)<.001b
 Dyslipidemia62 (41.1)42 (66.7)14 (23.3)4 (23.5)<.001b
 Coronary heart disease51 (33.8)45 (71.4)5 (8.3)1 (5.9)<.001b
 Lower-extremity artery disease22 (14.6)15 (23.8)6 (10.0)1 (5.9).06
 Valvular disease22 (14.6)18 (28.6)4 (6.7)0 (0)<.001b
 Valvular prosthesis16 (10.6)14 (22.2)1 (1.7)0 (0)<.001b
 Cardiac implantable device7 (4.6)6 (9.5)0 (0)0 (0).04b
History of neoplasia46 (30.4)9 (14.3)33 (55.0)1 (5.9)<.001b
Immunosuppression29 (19.2)8 (12.7)18 (30.0)0 (0).008b
 Immunosuppressive therapy9 (6.0)6 (9.5)1 (1.7)
 Recent chemotherapy19 (12.6)2 (3.2)16 (26.7)
 Solid organ transplantation7 (4.6)5 (7.9)0 (0)
No known comorbid conditions19 (12.6)3 (4.8)7 (11.7)9 (52.9)<.001b
Surgical history before mediastinitis
Surgery within 1 y105 (69.5)61 (96.8)38 (63.3)1 (5.9)<.001b
 Cardiovascular surgery60 (57.1)58 (95.1)0 (0)0 (0)
  Coronary graft29 (48.3)29 (50.0)
  Valvular surgery19 (31.7)18 (31.0)
  Otherd12 (20.0)11 (19.1)
 Gastroesophageal surgery/procedure36 (34.3)0 (0)36 (94.7)0 (0)
  Lewis-Santy procedure17 (47.2)17 (47.2)
  Esophageal dilation7 (19.4)7 (19.4)
  Othere12 (33.3)12 (33.3)
Surgical revision before mediastinitis17 (16.2)6 (9.8)9 (23.7)0 (0).10
Time between initial surgery and mediastinitis, median, d11 (5–23)16 (10–28)5 (1–11)1
Clinical and radiological data
 Fever110 (72.8)45 (71.4)35 (63.3)17 (100).005b
 Chest pain55 (38.7)23 (38.3)22 (40.0)7 (41.2).94
 Sternal scar abnormalities48 (31.8)46 (73.0)0 (0)0 (0)<.001b
 Septic shock68 (45.0)21 (33.3)40 (66.7)3 (17.6)<.001b
 Chest CT performed138 (91.4)52 (82.5)59 (98.3)17 (100).007b
 Chest CT contributory to diagnosis132/138 (95.7)47/52 (90.4)58/59 (98.3)17/17 (100).20
Management
 Surgery for mediastinitis122 (80.8)58 (92.1)45 (75.0)13 (76.5).006b
 Time between diagnosis and surgery, median, d1 (0–5)2 (0–8)0 (0–3)3 (0–4).80
 Perioperative evidence of mediastinitis99 (81.1)52 (89.7)31 (68.9)11 (84.6).052
 Surgical revision for mediastinitis38 (31.1)20 (34.5)9 (20.0)7 (53.4).10
 Duration of intravenous antimicrobial therapy, median, d32 (15­–50)42 (20–52)28 (14–47)22 (17–34).42
 Switch to oral antimicrobial therapy28 (20.1)16 (25.4)5 (9.8)5 (33.3).08
 Total duration of antimicrobial therapy, median, d41 (21–56)49 (40–63)28 (15–49)30 (20–38).30
Prognosis
 Length of hospital stay, median, d32 (21–59)34 (21–53)33 (25–64)25 (12–35).71
 ICU hospitalization129 (85.4)52 (82.5)55 (91.7)13 (76.5).24
 Length of ICU stay, median, d6 (2–18)4 (1–9)8 (4–24)13 (5–23).42
 All-cause mortality50 (33.1)21 (33.3)19 (31.7)2 (11.8).01b
 In-hospital mortality36 (23.8)14 (22.2)14 (23.3)1 (5.9).01b
 Time between inclusion and death, median, d32 (21–59)49 (19–201)28 (9–84)41 (38–43).28
CharacteristicPatients, No. (%)aP Value
All Mediastinitis (N = 151)PSM (n = 63 [41.7%])MEP (n = 60 [39.7%])DNM (n = 17 [11.3%])
Demographics
 Age, mean (SD), y63.3 (14.5)64.9 (11.8)65.6 (12.6)46.3 (18).002b
 Male sex109 (72.2)45 (71.4)40 (66.7)14 (82.4).33
 BMI, mean (SD)c27 (5.7)29.6 (5.9)24.4 (3.7)26.2 (6)<.001b
 Obesity (BMI >30)c31 (20.5)24 (38.1)4 (6.7)3 (17.6)
Chronic renal failure19 (12.6)14 (22.2)5 (8.3)0 (0).02b
Cardiovascular comorbid conditions
 Total no., mean (SD)2.4 (2)3.8 (1.9)1.5 (1.5)1 (1.5)<.001b
 High blood pressure78 (51.7)46 (73.0)25 (41.7)3 (17.6)<.001b
 Diabetes56 (37.1)39 (61.9)12 (20.0)3 (17.6)<.001b
 Dyslipidemia62 (41.1)42 (66.7)14 (23.3)4 (23.5)<.001b
 Coronary heart disease51 (33.8)45 (71.4)5 (8.3)1 (5.9)<.001b
 Lower-extremity artery disease22 (14.6)15 (23.8)6 (10.0)1 (5.9).06
 Valvular disease22 (14.6)18 (28.6)4 (6.7)0 (0)<.001b
 Valvular prosthesis16 (10.6)14 (22.2)1 (1.7)0 (0)<.001b
 Cardiac implantable device7 (4.6)6 (9.5)0 (0)0 (0).04b
History of neoplasia46 (30.4)9 (14.3)33 (55.0)1 (5.9)<.001b
Immunosuppression29 (19.2)8 (12.7)18 (30.0)0 (0).008b
 Immunosuppressive therapy9 (6.0)6 (9.5)1 (1.7)
 Recent chemotherapy19 (12.6)2 (3.2)16 (26.7)
 Solid organ transplantation7 (4.6)5 (7.9)0 (0)
No known comorbid conditions19 (12.6)3 (4.8)7 (11.7)9 (52.9)<.001b
Surgical history before mediastinitis
Surgery within 1 y105 (69.5)61 (96.8)38 (63.3)1 (5.9)<.001b
 Cardiovascular surgery60 (57.1)58 (95.1)0 (0)0 (0)
  Coronary graft29 (48.3)29 (50.0)
  Valvular surgery19 (31.7)18 (31.0)
  Otherd12 (20.0)11 (19.1)
 Gastroesophageal surgery/procedure36 (34.3)0 (0)36 (94.7)0 (0)
  Lewis-Santy procedure17 (47.2)17 (47.2)
  Esophageal dilation7 (19.4)7 (19.4)
  Othere12 (33.3)12 (33.3)
Surgical revision before mediastinitis17 (16.2)6 (9.8)9 (23.7)0 (0).10
Time between initial surgery and mediastinitis, median, d11 (5–23)16 (10–28)5 (1–11)1
Clinical and radiological data
 Fever110 (72.8)45 (71.4)35 (63.3)17 (100).005b
 Chest pain55 (38.7)23 (38.3)22 (40.0)7 (41.2).94
 Sternal scar abnormalities48 (31.8)46 (73.0)0 (0)0 (0)<.001b
 Septic shock68 (45.0)21 (33.3)40 (66.7)3 (17.6)<.001b
 Chest CT performed138 (91.4)52 (82.5)59 (98.3)17 (100).007b
 Chest CT contributory to diagnosis132/138 (95.7)47/52 (90.4)58/59 (98.3)17/17 (100).20
Management
 Surgery for mediastinitis122 (80.8)58 (92.1)45 (75.0)13 (76.5).006b
 Time between diagnosis and surgery, median, d1 (0–5)2 (0–8)0 (0–3)3 (0–4).80
 Perioperative evidence of mediastinitis99 (81.1)52 (89.7)31 (68.9)11 (84.6).052
 Surgical revision for mediastinitis38 (31.1)20 (34.5)9 (20.0)7 (53.4).10
 Duration of intravenous antimicrobial therapy, median, d32 (15­–50)42 (20–52)28 (14–47)22 (17–34).42
 Switch to oral antimicrobial therapy28 (20.1)16 (25.4)5 (9.8)5 (33.3).08
 Total duration of antimicrobial therapy, median, d41 (21–56)49 (40–63)28 (15–49)30 (20–38).30
Prognosis
 Length of hospital stay, median, d32 (21–59)34 (21–53)33 (25–64)25 (12–35).71
 ICU hospitalization129 (85.4)52 (82.5)55 (91.7)13 (76.5).24
 Length of ICU stay, median, d6 (2–18)4 (1–9)8 (4–24)13 (5–23).42
 All-cause mortality50 (33.1)21 (33.3)19 (31.7)2 (11.8).01b
 In-hospital mortality36 (23.8)14 (22.2)14 (23.3)1 (5.9).01b
 Time between inclusion and death, median, d32 (21–59)49 (19–201)28 (9–84)41 (38–43).28

Abbreviations: BMI, body mass index; CT, computed tomography; DNM, descending necrotizing mediastinitis; ICU, intensive care unit; MEP, mediastinitis due to esophageal perforation; PSM, poststernotomy mediastinitis; SD, standard deviation.

aData represent no. (%) of patients unless otherwise specified.

bSignificant at P < .05.

cBMI calculated as weight in kilograms divided by height in meters squared.

dOther cardiovascular surgery included aortic surgery (8 of 60 patients), cardiac graft (3 of 60), and electronic cardiac device implantation (1 of 60);

eOther gastroesophageal procedures included hiatal hernia repair (4 of 36 patients); esophageal diverticulum surgery (3 of 36); and stomach ulcer suture, complicated ultrasonography-endoscopy, complicated transesophageal echocardiography, surgery for spontaneous rupture of the esophagus, and cervical corpectomy complicated by an esophageal fistula (each 1 of 36).

Table 1.

Characteristics of Study Population

CharacteristicPatients, No. (%)aP Value
All Mediastinitis (N = 151)PSM (n = 63 [41.7%])MEP (n = 60 [39.7%])DNM (n = 17 [11.3%])
Demographics
 Age, mean (SD), y63.3 (14.5)64.9 (11.8)65.6 (12.6)46.3 (18).002b
 Male sex109 (72.2)45 (71.4)40 (66.7)14 (82.4).33
 BMI, mean (SD)c27 (5.7)29.6 (5.9)24.4 (3.7)26.2 (6)<.001b
 Obesity (BMI >30)c31 (20.5)24 (38.1)4 (6.7)3 (17.6)
Chronic renal failure19 (12.6)14 (22.2)5 (8.3)0 (0).02b
Cardiovascular comorbid conditions
 Total no., mean (SD)2.4 (2)3.8 (1.9)1.5 (1.5)1 (1.5)<.001b
 High blood pressure78 (51.7)46 (73.0)25 (41.7)3 (17.6)<.001b
 Diabetes56 (37.1)39 (61.9)12 (20.0)3 (17.6)<.001b
 Dyslipidemia62 (41.1)42 (66.7)14 (23.3)4 (23.5)<.001b
 Coronary heart disease51 (33.8)45 (71.4)5 (8.3)1 (5.9)<.001b
 Lower-extremity artery disease22 (14.6)15 (23.8)6 (10.0)1 (5.9).06
 Valvular disease22 (14.6)18 (28.6)4 (6.7)0 (0)<.001b
 Valvular prosthesis16 (10.6)14 (22.2)1 (1.7)0 (0)<.001b
 Cardiac implantable device7 (4.6)6 (9.5)0 (0)0 (0).04b
History of neoplasia46 (30.4)9 (14.3)33 (55.0)1 (5.9)<.001b
Immunosuppression29 (19.2)8 (12.7)18 (30.0)0 (0).008b
 Immunosuppressive therapy9 (6.0)6 (9.5)1 (1.7)
 Recent chemotherapy19 (12.6)2 (3.2)16 (26.7)
 Solid organ transplantation7 (4.6)5 (7.9)0 (0)
No known comorbid conditions19 (12.6)3 (4.8)7 (11.7)9 (52.9)<.001b
Surgical history before mediastinitis
Surgery within 1 y105 (69.5)61 (96.8)38 (63.3)1 (5.9)<.001b
 Cardiovascular surgery60 (57.1)58 (95.1)0 (0)0 (0)
  Coronary graft29 (48.3)29 (50.0)
  Valvular surgery19 (31.7)18 (31.0)
  Otherd12 (20.0)11 (19.1)
 Gastroesophageal surgery/procedure36 (34.3)0 (0)36 (94.7)0 (0)
  Lewis-Santy procedure17 (47.2)17 (47.2)
  Esophageal dilation7 (19.4)7 (19.4)
  Othere12 (33.3)12 (33.3)
Surgical revision before mediastinitis17 (16.2)6 (9.8)9 (23.7)0 (0).10
Time between initial surgery and mediastinitis, median, d11 (5–23)16 (10–28)5 (1–11)1
Clinical and radiological data
 Fever110 (72.8)45 (71.4)35 (63.3)17 (100).005b
 Chest pain55 (38.7)23 (38.3)22 (40.0)7 (41.2).94
 Sternal scar abnormalities48 (31.8)46 (73.0)0 (0)0 (0)<.001b
 Septic shock68 (45.0)21 (33.3)40 (66.7)3 (17.6)<.001b
 Chest CT performed138 (91.4)52 (82.5)59 (98.3)17 (100).007b
 Chest CT contributory to diagnosis132/138 (95.7)47/52 (90.4)58/59 (98.3)17/17 (100).20
Management
 Surgery for mediastinitis122 (80.8)58 (92.1)45 (75.0)13 (76.5).006b
 Time between diagnosis and surgery, median, d1 (0–5)2 (0–8)0 (0–3)3 (0–4).80
 Perioperative evidence of mediastinitis99 (81.1)52 (89.7)31 (68.9)11 (84.6).052
 Surgical revision for mediastinitis38 (31.1)20 (34.5)9 (20.0)7 (53.4).10
 Duration of intravenous antimicrobial therapy, median, d32 (15­–50)42 (20–52)28 (14–47)22 (17–34).42
 Switch to oral antimicrobial therapy28 (20.1)16 (25.4)5 (9.8)5 (33.3).08
 Total duration of antimicrobial therapy, median, d41 (21–56)49 (40–63)28 (15–49)30 (20–38).30
Prognosis
 Length of hospital stay, median, d32 (21–59)34 (21–53)33 (25–64)25 (12–35).71
 ICU hospitalization129 (85.4)52 (82.5)55 (91.7)13 (76.5).24
 Length of ICU stay, median, d6 (2–18)4 (1–9)8 (4–24)13 (5–23).42
 All-cause mortality50 (33.1)21 (33.3)19 (31.7)2 (11.8).01b
 In-hospital mortality36 (23.8)14 (22.2)14 (23.3)1 (5.9).01b
 Time between inclusion and death, median, d32 (21–59)49 (19–201)28 (9–84)41 (38–43).28
CharacteristicPatients, No. (%)aP Value
All Mediastinitis (N = 151)PSM (n = 63 [41.7%])MEP (n = 60 [39.7%])DNM (n = 17 [11.3%])
Demographics
 Age, mean (SD), y63.3 (14.5)64.9 (11.8)65.6 (12.6)46.3 (18).002b
 Male sex109 (72.2)45 (71.4)40 (66.7)14 (82.4).33
 BMI, mean (SD)c27 (5.7)29.6 (5.9)24.4 (3.7)26.2 (6)<.001b
 Obesity (BMI >30)c31 (20.5)24 (38.1)4 (6.7)3 (17.6)
Chronic renal failure19 (12.6)14 (22.2)5 (8.3)0 (0).02b
Cardiovascular comorbid conditions
 Total no., mean (SD)2.4 (2)3.8 (1.9)1.5 (1.5)1 (1.5)<.001b
 High blood pressure78 (51.7)46 (73.0)25 (41.7)3 (17.6)<.001b
 Diabetes56 (37.1)39 (61.9)12 (20.0)3 (17.6)<.001b
 Dyslipidemia62 (41.1)42 (66.7)14 (23.3)4 (23.5)<.001b
 Coronary heart disease51 (33.8)45 (71.4)5 (8.3)1 (5.9)<.001b
 Lower-extremity artery disease22 (14.6)15 (23.8)6 (10.0)1 (5.9).06
 Valvular disease22 (14.6)18 (28.6)4 (6.7)0 (0)<.001b
 Valvular prosthesis16 (10.6)14 (22.2)1 (1.7)0 (0)<.001b
 Cardiac implantable device7 (4.6)6 (9.5)0 (0)0 (0).04b
History of neoplasia46 (30.4)9 (14.3)33 (55.0)1 (5.9)<.001b
Immunosuppression29 (19.2)8 (12.7)18 (30.0)0 (0).008b
 Immunosuppressive therapy9 (6.0)6 (9.5)1 (1.7)
 Recent chemotherapy19 (12.6)2 (3.2)16 (26.7)
 Solid organ transplantation7 (4.6)5 (7.9)0 (0)
No known comorbid conditions19 (12.6)3 (4.8)7 (11.7)9 (52.9)<.001b
Surgical history before mediastinitis
Surgery within 1 y105 (69.5)61 (96.8)38 (63.3)1 (5.9)<.001b
 Cardiovascular surgery60 (57.1)58 (95.1)0 (0)0 (0)
  Coronary graft29 (48.3)29 (50.0)
  Valvular surgery19 (31.7)18 (31.0)
  Otherd12 (20.0)11 (19.1)
 Gastroesophageal surgery/procedure36 (34.3)0 (0)36 (94.7)0 (0)
  Lewis-Santy procedure17 (47.2)17 (47.2)
  Esophageal dilation7 (19.4)7 (19.4)
  Othere12 (33.3)12 (33.3)
Surgical revision before mediastinitis17 (16.2)6 (9.8)9 (23.7)0 (0).10
Time between initial surgery and mediastinitis, median, d11 (5–23)16 (10–28)5 (1–11)1
Clinical and radiological data
 Fever110 (72.8)45 (71.4)35 (63.3)17 (100).005b
 Chest pain55 (38.7)23 (38.3)22 (40.0)7 (41.2).94
 Sternal scar abnormalities48 (31.8)46 (73.0)0 (0)0 (0)<.001b
 Septic shock68 (45.0)21 (33.3)40 (66.7)3 (17.6)<.001b
 Chest CT performed138 (91.4)52 (82.5)59 (98.3)17 (100).007b
 Chest CT contributory to diagnosis132/138 (95.7)47/52 (90.4)58/59 (98.3)17/17 (100).20
Management
 Surgery for mediastinitis122 (80.8)58 (92.1)45 (75.0)13 (76.5).006b
 Time between diagnosis and surgery, median, d1 (0–5)2 (0–8)0 (0–3)3 (0–4).80
 Perioperative evidence of mediastinitis99 (81.1)52 (89.7)31 (68.9)11 (84.6).052
 Surgical revision for mediastinitis38 (31.1)20 (34.5)9 (20.0)7 (53.4).10
 Duration of intravenous antimicrobial therapy, median, d32 (15­–50)42 (20–52)28 (14–47)22 (17–34).42
 Switch to oral antimicrobial therapy28 (20.1)16 (25.4)5 (9.8)5 (33.3).08
 Total duration of antimicrobial therapy, median, d41 (21–56)49 (40–63)28 (15–49)30 (20–38).30
Prognosis
 Length of hospital stay, median, d32 (21–59)34 (21–53)33 (25–64)25 (12–35).71
 ICU hospitalization129 (85.4)52 (82.5)55 (91.7)13 (76.5).24
 Length of ICU stay, median, d6 (2–18)4 (1–9)8 (4–24)13 (5–23).42
 All-cause mortality50 (33.1)21 (33.3)19 (31.7)2 (11.8).01b
 In-hospital mortality36 (23.8)14 (22.2)14 (23.3)1 (5.9).01b
 Time between inclusion and death, median, d32 (21–59)49 (19–201)28 (9–84)41 (38–43).28

Abbreviations: BMI, body mass index; CT, computed tomography; DNM, descending necrotizing mediastinitis; ICU, intensive care unit; MEP, mediastinitis due to esophageal perforation; PSM, poststernotomy mediastinitis; SD, standard deviation.

aData represent no. (%) of patients unless otherwise specified.

bSignificant at P < .05.

cBMI calculated as weight in kilograms divided by height in meters squared.

dOther cardiovascular surgery included aortic surgery (8 of 60 patients), cardiac graft (3 of 60), and electronic cardiac device implantation (1 of 60);

eOther gastroesophageal procedures included hiatal hernia repair (4 of 36 patients); esophageal diverticulum surgery (3 of 36); and stomach ulcer suture, complicated ultrasonography-endoscopy, complicated transesophageal echocardiography, surgery for spontaneous rupture of the esophagus, and cervical corpectomy complicated by an esophageal fistula (each 1 of 36).

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