graph LR
Respiratory_Epithelial_Infection_and_Cytopathic_Effect["Respiratory Epithelial Infection and Cytopathic Effect"]
Endothelial_Dysfunction_and_Thromboinflammation["Endothelial Dysfunction and Thromboinflammation"]
Immune_competent_microvascularized_lung_on_a_chip_IC_LOC_severe_H1N1_model["Immune-competent microvascularized lung-on-a-chip (IC-LOC) severe H1N1 model"]
Triggering_of_Acute_Myocardial_Infarction["Triggering of Acute Myocardial Infarction"]
Inflammasome_Activation_and_Cytokine_Storm["Inflammasome Activation and Cytokine Storm"]
Endothelial_Dysfunction_and_Thromboinflammation --> Triggering_of_Acute_Myocardial_Infarction
Immune_competent_microvascularized_lung_on_a_chip_IC_LOC_severe_H1N1_model --> Inflammasome_Activation_and_Cytokine_Storm
Immune_competent_microvascularized_lung_on_a_chip_IC_LOC_severe_H1N1_model --> Respiratory_Epithelial_Infection_and_Cytopathic_Effect
Immune_competent_microvascularized_lung_on_a_chip_IC_LOC_severe_H1N1_model --> Endothelial_Dysfunction_and_Thromboinflammation
style Respiratory_Epithelial_Infection_and_Cytopathic_Effect fill:#dbeafe
style Endothelial_Dysfunction_and_Thromboinflammation fill:#dbeafe
style Immune_competent_microvascularized_lung_on_a_chip_IC_LOC_severe_H1N1_model fill:#ccfbf1
style Triggering_of_Acute_Myocardial_Infarction fill:#dbeafe
style Inflammasome_Activation_and_Cytokine_Storm fill:#dbeafe
graph LR
Coronary_Atherothrombosis["Coronary Atherothrombosis"]
Arrhythmia["Arrhythmia"]
Chest_pain["Chest pain"]
Anti_Inflammatory___Immunomodulatory_Therapy["Anti-Inflammatory / Immunomodulatory Therapy"]
Myocardial_Ischemia_and_Cardiomyocyte_Death["Myocardial Ischemia and Cardiomyocyte Death"]
Human_heart_on_a_chip_ischemia_reperfusion_assay_with_endothelial_extracellular_vesicle_rescue["Human heart-on-a-chip ischemia-reperfusion assay with endothelial extracellular vesicle rescue"]
Epicardial_myocardial_heart_on_a_chip_model_of_ischemia_reperfusion_injury["Epicardial-myocardial heart-on-a-chip model of ischemia-reperfusion injury"]
Cardiac_Fibrosis_and_Ventricular_Remodeling["Cardiac Fibrosis and Ventricular Remodeling"]
Elevated_cardiac_troponin["Elevated cardiac troponin"]
Post_Infarction_Inflammation_and_Cardiac_Repair["Post-Infarction Inflammation and Cardiac Repair"]
Congestive_heart_failure["Congestive heart failure"]
Syncope["Syncope"]
Reduced_left_ventricular_ejection_fraction["Reduced left ventricular ejection fraction"]
Dyspnea["Dyspnea"]
Bioelectronically_instrumented_heart_on_a_chip_under_acute_hypoxia["Bioelectronically instrumented heart-on-a-chip under acute hypoxia"]
Total_lipids_in_very_small_VLDL_XS_VLDL_L["Total lipids in very small VLDL (XS-VLDL-L)"]
Coronary_Reperfusion_PCI_or_Fibrinolysis["Coronary Reperfusion (PCI or Fibrinolysis)"]
Elevated_CK_MB["Elevated CK-MB"]
Myocardial_infarct_border_zone_on_a_chip["Myocardial infarct border-zone-on-a-chip"]
Myocardial_infarction["Myocardial infarction"]
Angina_pectoris["Angina pectoris"]
Human_cardiac_infarct_organoid_with_an_internal_oxygen_diffusion_gradient["Human cardiac infarct organoid with an internal oxygen-diffusion gradient"]
Ventricular_fibrillation["Ventricular fibrillation"]
Antiplatelet_and_Antithrombotic_Therapy["Antiplatelet and Antithrombotic Therapy"]
Phospholipids_to_total_lipids_in_small_HDL_percent_S_HDL_PL%["Phospholipids to total lipids in small HDL, percent (S-HDL-PL%)"]
Ischemia_Reperfusion_Injury["Ischemia-Reperfusion Injury"]
Coronary_Atherothrombosis --> Myocardial_Ischemia_and_Cardiomyocyte_Death
Myocardial_Ischemia_and_Cardiomyocyte_Death --> Ischemia_Reperfusion_Injury
Myocardial_Ischemia_and_Cardiomyocyte_Death --> Post_Infarction_Inflammation_and_Cardiac_Repair
Myocardial_Ischemia_and_Cardiomyocyte_Death --> Myocardial_infarction
Myocardial_Ischemia_and_Cardiomyocyte_Death --> Angina_pectoris
Myocardial_Ischemia_and_Cardiomyocyte_Death --> Chest_pain
Myocardial_Ischemia_and_Cardiomyocyte_Death --> Arrhythmia
Myocardial_Ischemia_and_Cardiomyocyte_Death --> Reduced_left_ventricular_ejection_fraction
Ischemia_Reperfusion_Injury --> Ventricular_fibrillation
Ischemia_Reperfusion_Injury --> Post_Infarction_Inflammation_and_Cardiac_Repair
Post_Infarction_Inflammation_and_Cardiac_Repair --> Cardiac_Fibrosis_and_Ventricular_Remodeling
Cardiac_Fibrosis_and_Ventricular_Remodeling --> Reduced_left_ventricular_ejection_fraction
Cardiac_Fibrosis_and_Ventricular_Remodeling --> Congestive_heart_failure
Arrhythmia --> Ventricular_fibrillation
Arrhythmia --> Syncope
Reduced_left_ventricular_ejection_fraction --> Dyspnea
Coronary_Reperfusion_PCI_or_Fibrinolysis --> Coronary_Atherothrombosis
Coronary_Reperfusion_PCI_or_Fibrinolysis --> Myocardial_Ischemia_and_Cardiomyocyte_Death
Antiplatelet_and_Antithrombotic_Therapy --> Coronary_Atherothrombosis
Anti_Inflammatory___Immunomodulatory_Therapy --> Post_Infarction_Inflammation_and_Cardiac_Repair
Anti_Inflammatory___Immunomodulatory_Therapy --> Ischemia_Reperfusion_Injury
Human_cardiac_infarct_organoid_with_an_internal_oxygen_diffusion_gradient --> Myocardial_Ischemia_and_Cardiomyocyte_Death
Human_cardiac_infarct_organoid_with_an_internal_oxygen_diffusion_gradient --> Cardiac_Fibrosis_and_Ventricular_Remodeling
Myocardial_infarct_border_zone_on_a_chip --> Myocardial_Ischemia_and_Cardiomyocyte_Death
Myocardial_infarct_border_zone_on_a_chip --> Post_Infarction_Inflammation_and_Cardiac_Repair
Human_heart_on_a_chip_ischemia_reperfusion_assay_with_endothelial_extracellular_vesicle_rescue --> Ischemia_Reperfusion_Injury
Bioelectronically_instrumented_heart_on_a_chip_under_acute_hypoxia --> Myocardial_Ischemia_and_Cardiomyocyte_Death
Epicardial_myocardial_heart_on_a_chip_model_of_ischemia_reperfusion_injury --> Ischemia_Reperfusion_Injury
Epicardial_myocardial_heart_on_a_chip_model_of_ischemia_reperfusion_injury --> Cardiac_Fibrosis_and_Ventricular_Remodeling
Myocardial_Ischemia_and_Cardiomyocyte_Death -.-> Elevated_cardiac_troponin
Myocardial_Ischemia_and_Cardiomyocyte_Death -.-> Elevated_CK_MB
Coronary_Atherothrombosis -.-> Total_lipids_in_very_small_VLDL_XS_VLDL_L
Coronary_Atherothrombosis -.-> Phospholipids_to_total_lipids_in_small_HDL_percent_S_HDL_PL%
style Coronary_Atherothrombosis fill:#dbeafe
style Arrhythmia fill:#fef3c7
style Chest_pain fill:#fef3c7
style Anti_Inflammatory___Immunomodulatory_Therapy fill:#fce7f3
style Myocardial_Ischemia_and_Cardiomyocyte_Death fill:#dbeafe
style Human_heart_on_a_chip_ischemia_reperfusion_assay_with_endothelial_extracellular_vesicle_rescue fill:#ccfbf1
style Epicardial_myocardial_heart_on_a_chip_model_of_ischemia_reperfusion_injury fill:#ccfbf1
style Cardiac_Fibrosis_and_Ventricular_Remodeling fill:#dbeafe
style Elevated_cardiac_troponin fill:#e0e7ff
style Post_Infarction_Inflammation_and_Cardiac_Repair fill:#dbeafe
style Congestive_heart_failure fill:#fef3c7
style Syncope fill:#fef3c7
style Reduced_left_ventricular_ejection_fraction fill:#fef3c7
style Dyspnea fill:#fef3c7
style Bioelectronically_instrumented_heart_on_a_chip_under_acute_hypoxia fill:#ccfbf1
style Total_lipids_in_very_small_VLDL_XS_VLDL_L fill:#e0e7ff
style Coronary_Reperfusion_PCI_or_Fibrinolysis fill:#fce7f3
style Elevated_CK_MB fill:#e0e7ff
style Myocardial_infarct_border_zone_on_a_chip fill:#ccfbf1
style Myocardial_infarction fill:#fef3c7
style Angina_pectoris fill:#fef3c7
style Human_cardiac_infarct_organoid_with_an_internal_oxygen_diffusion_gradient fill:#ccfbf1
style Ventricular_fibrillation fill:#fef3c7
style Antiplatelet_and_Antithrombotic_Therapy fill:#fce7f3
style Phospholipids_to_total_lipids_in_small_HDL_percent_S_HDL_PL% fill:#e0e7ff
style Ischemia_Reperfusion_Injury fill:#dbeafe
name: com_Influenza__Myocardial_Infarction
creation_date: "2026-06-25T12:00:00Z"
curation_status: CURATED
notes: >-
Directional trajectory: acute influenza is a short-term trigger of acute
(type 1) myocardial infarction, with the excess risk concentrated in the
first week after infection. The mechanism — systemic inflammation,
thromboinflammatory endothelial activation, and a procoagulant shift
destabilizing vulnerable coronary plaque — is also captured as a
pathophysiology node ("Triggering of Acute Myocardial Infarction") in
Influenza.yaml. This entry models the disease-to-disease directional signal.
disease_a:
slug: Influenza
disease_b:
slug: Myocardial_Infarction
directionality: A_BEFORE_B
association_signals:
- source: LITERATURE
method: EHR_COHORT_ASSOCIATION
population: >-
Self-controlled case series of adults with laboratory-confirmed influenza
and hospitalization for acute myocardial infarction, Ontario, Canada.
directionality: A_BEFORE_B
statistics:
metrics:
- metric_type: IRR
metric_value: 6.05
metric_ci_lower: 3.86
metric_ci_upper: 9.50
notes: >-
Incidence ratio of acute MI admission during the 7-day post-influenza
risk interval versus the control interval; no excess after day 7.
evidence:
- reference: PMID:29365305
reference_title: "Acute Myocardial Infarction after Laboratory-Confirmed Influenza Infection."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The incidence ratio of an admission for acute myocardial infarction during the risk interval as compared with the control interval was 6.05"
explanation: >-
Self-controlled case series quantifies a ~6-fold increase in acute MI
risk during the 7 days after laboratory-confirmed influenza.
hypotheses:
- description: >-
Acute influenza drives systemic inflammation, endothelial activation,
platelet activation, and a procoagulant state that can destabilize
vulnerable coronary atherosclerotic plaque and precipitate atherothrombotic
coronary occlusion, triggering type 1 myocardial infarction.
evidence:
- reference: PMID:29365305
reference_title: "Acute Myocardial Infarction after Laboratory-Confirmed Influenza Infection."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Acute myocardial infarction can be triggered by acute respiratory infections."
explanation: >-
States the mechanistic premise that acute respiratory infection,
including influenza, can trigger acute myocardial infarction.
pathophysiology:
- name: Thromboinflammatory plaque destabilization
description: >-
Influenza-driven inflammation and procoagulant shift promote coronary
plaque instability and thrombosis.
biological_processes:
- preferred_term: inflammatory response
term:
id: GO:0006954
label: inflammatory response
- preferred_term: platelet activation
term:
id: GO:0030168
label: platelet activation
- preferred_term: blood coagulation
term:
id: GO:0007596
label: blood coagulation
evidence:
- reference: PMID:29365305
reference_title: "Acute Myocardial Infarction after Laboratory-Confirmed Influenza Infection."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Acute myocardial infarction can be triggered by acute respiratory infections."
explanation: Supports infection-triggered acute MI via inflammatory/thrombotic mechanisms.