Table 2.

Studies included in the review.

Source	Age (Years)	Sex	Chief Complaint	Underlying Cause	Medical History	Organism(s)	Antibiotic Treatment	Drainage	Outcome	Infection Route
[11]	65	Male	Fever, chill, weight loss, abdominal pain	Renal abscess	Renal cyst	P. micra	MEPN, VCM→ETP, CLDM	-	Survival	Dental treatment→oral infection
[12]	72	Female	Fever, general malaise, dyspnea	Liver abscess, brain abscess	Colorectal cancer, psoriasis, hypertension	P. micra	CPFX, MNZ→MEPN	+	Survival	Unknown
[13]	85	Male	Fever, general malaise	Septic pulmonary embolism	Diabetes mellitus	P. micra	MEPN, VCM→ABPC/SBT	-	Survival	Periodontitis/oral infection
[14]	94	Male	Fever, constipation	Colorectal cancer	Dyslipidemia, diabetes, hypertension	P. micra Gemella morbillorum	CTRX→ ABPC/SBT	+	Survival	Unknown
[15]	61	Male	Fever, headache	Bacteremia meningitis	Chronic hepatitis B, dyslipidemia	P. micra	CTRX, VCM→ABPC/SBT, MNZ	-	Survival	Dental treatment/oral infection
[16]	53	Male	Fever, general malaise, chills	Esophageal cancer	Chronic alcoholic liver disease	P. micra	MEPN	-	Septicemia Death (6 week)	Periodontal disease /oral infection
[17]	85	Male	Fever, chills	Bile duct lithiasis	Hypertension	P. micra	CPFX, PCG	-	Survival	Endoscopic procedures/mucosal infection
[18]	43	Female	Fever, abdominal pain, vomiting	Retroperitoneal leiomyosarcoma	None	Atopobium rimae P. micra	LVFX→TAZ/PIP, MNZ	-	Septicemia Death (20 days later)	Retroperitoneal tumor necrosis/unknown
[19]	82	Male	Fever, dizziness	Infectious endocarditis pacemaker infection	Sinusoidal failure syndrome, hypertension, abdominal aortic aneurysm	P. micra	CTRX→ABPC→GM	-	Survival	Dental caries/oral infection
[20]	71	Male	Fever, chills, cough	Infectious endocarditis	Diabetes mellitus	P. micra	CTRX, VCM→PCG	-	Survival	Dental treatment/oral infection
[21]	72	Male	Abdominal pain, night sweats, fever	intrahepatic portal vein thrombosis	Hypertension	P. micra	LVFX→TAZ/PIP→CPFX, MNZ	-	Survival	Dental treatment/oral infection
[22]	65	Female	Loss of appetite, nausea, weakness	Liver abscess, brain abscess	None	P. micra	CTX, MNZ	+	survival	pressure ulcer/transdermal infection
[23]	67	Male	Abdominal pain	Spondylodiscitis	Diabetes mellitus	P. micra	ABPC/SBT→ABPC	-	Survival	Periodontal disease, dental treatment/oral infection
[24]	83	Male	Lumbago	Spondylodiscitis, epidural abscess, psoas abscess	Left hip joint replacement, right knee joint replacement, ischemic heart disease	P. micra	ABPC, GM→CLDM, REP	-	Survival	Unknown
[25]	83	Male	Lumbago	Epidural abscess	Aortic regurgitation, Atrial fibrillation	Desulfovibro fairfieldensis P. micra	ETP→PCG	+	Survival	Bacterial translocation
[26]	77	Male	Fever, abdominal pain, left shoulder pain, shortness of breath, weight loss	Splenic vein thrombosis, splenic abscess	Jejunal perforation	P. micra	TAZ/PIP, VCM→ABPC/SBT→ABPC	+	Survival	Unknown
[27]	42	Male	Fever, chills, cough	Infectious endocarditis	MVR, diabetes mellitus	P. micra	CTX, VCM	-	Survival	Dental treatment/oral infection
[28]	82	Male	Back pain, shoulder pain	Spondylodiscitis, psoas abscess, epidural abscess	Renal failure, gout, lumbar discectomy	P. micra	ABPC, MEPM	+	AAA rupture death	Periodontal disease/oral infection
[28]	72	Male	Lumbago	Spondylodiscitis, epidural abscess	Parkinson disease	P. micra	ABPC/CVA	+	Survival	Dental treatment/oral infection
[28]	72	Male	Lumbago	Degenerative changes L4/5	Diabetes mellitus	P. micra	PCG, ETP→CLDM	-	Survival	Unknown
[28]	72	Female	Lumbago	Spondylodiscitis, epidural abscess	Metastatic breast cancer	P. micra	ABPC/CVA→MFLX	+	Survival	Unknown
[4]	73	Male	Pain in right knee	Septic arthritis of the knee, pseudogout	Hypertension, diabetes mellitus, total hip replacement	Staphylococcus aureus P. micra	VCM→PCG	+	Survival
[29]	41	Female	Abdominal pain, tachycardia, low blood pressure	Ulcerative colitis, pulmonary embolism	Ulcerative colitis, deep vein thrombosis	Clostridium cadaveris, P. micra	TAZ/PIP→LZD, MNZ, MEPN, FCZ	-	Septicemia Death (55 days later)
[30]	83	Male	Lumbago	Spondylodiscitis, psoas abscess, necrotizing fasciitis	Prostate cancer, diabetes mellitus, hypertension, hyperuricemia, lumbar compression fracture	P. micra	MEPN, CLDM	+	Septicemia Death (3 days later)	Diabetes, prostate cancer/unknown
[31]	70	Male	Chest pain	Infectious endocarditis	None	P. micra	ABPC/SBT	+	Survival	Dental caries/oral infection
[32]	59	Male	Lumbago	Spondylodiscitis	Lumbar discectomy	P. micra	ETP→ABPC	+	Survival	Periodontal disease/oral infection

Abbreviations: ABPC, ampicillin; ABPC/SBT, sulbactam/ampicillin; AMPC/CVA, clavulanic acid/amoxicillin; CLDM, clindamycin; CPFX, ciprofloxacin; CTRX, ceftriaxone; CTX, cefotaxime; ETP, ertapenem; FCZ, fluconazole; GM, gentamicin; LVFX, levofloxacin; LZD, linezolid; MEPN, meropenem; MNZ, metronidazole; PCG, penicillin G; TAZ/PIPC, tazobactam/piperacillin; REP, rifampicin; VCM, vancomycin.