| | Age/sex | Bite site | Spider species | Clinical features | Lab findings |
| | 15/M | Rt big toe | Black widow spider (BWS) | Local pain; back pain; priapism; abdominal cramps; progressive paresthesia; dyspnea/restlessness; rigors; pulmonary edema | Leukocytosis 18,000; ECG: T-inversion in 1, AVL; S-T elevation: AVL, V2, V3; highly elevated CK: 2085 IU/L; chest X-ray: pulmonary edema; ECHO: bacmyocardial dysfunction; low ejection fraction 0.264 |
| | 22/M | Left thigh | BWS (Latrodectus Hesperus) | Back and abdominal pain, tremors, diaphoresis, paresthesias, periorbital edema, diffuse muscle fasciculations, pulmonary edema | ECG: incomplete right bundle branch block with ST elevations in the precordial leads, CPK: 243 IU/L, troponin 1c: 1.37 ng/mL ECHO: low LVEF:35–40 |
| | 16/M | | BWS | Typical chest pain | ECG: ST-T changes in precordial leads Echo: akinesia of interventricular septum with depressed left ventricular function |
| | 65/M | left foot | BWS | Vomiting, nausea, chest pain. | ECG: 0.5-mm ST-segment elevation in leads II, aVF, and V3 through V6 and accompanying augmentation in T-wave amplitude in leads V3 through V6 Troponin: 6.1 ng/mL Echo: normal |
| | 22/M | left shoulder | BWS | Anxiety, severe hypertension, nausea, vomiting, tremor, generalized pain,diaphoresis, and rhabdomyolysis | Troponin I: 0.75 ng/mL, ECG: atrial depolarizationabnormalities in leads D II, III, and aVF, and depolarization abnormalities in leads V1 and aVL. LVEF: 50%, anterior and septal wall motion abnormality |
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