HEART ATTACK; ELECTROLYTES WERE ALMOST UNMEASURABLE; DIFFICULT TIME CONTROLLING MY BLOOD PRESSURE BECAUSE IT STAYED HIGH ALL THE TIME; HAD TO GO TO REHAB TO LEARN HOW TO WALK/WALKING PROBLEMS VERY FAR; SHORT OF BREATH; VERY TIRED; BLOOD SUGAR LITTLE DIFFICULT TO CONTROL; This spontaneous report received from a patient via a company representative concerned an 8 decade female. The patient's weight was 148 pounds, and height was 67 inches. The patient's past medical history included: caesarian births, and gallbladder surgery, and concurrent conditions included: insulin dependent diabetes, hypertension, colon cancer (12 years ago now in remission), generalized anxiety, panic attacks, penicillin allergy (true reactions), antihistamine allergy (antihistamines speed up my heart), non smoker, non alcohol user and drug allergy (Codeine and Morphine) and other pre-existing medical conditions included: The patient had no drug abuse or illicit drug usage. The patient received covid-19 vaccine ad26.cov2.s (suspension for injection, route of admin, and batch number were not reported) dose was not reported, 1 total administered in right arm on an unspecified date in MAY-2022 for covid-19 prophylaxis. Age at time of vaccination 8 decade old. The batch number was not reported and has been requested. Concomitant medications included atenolol for beta blocker, amlodipine besilate/benazepril hydrochloride, and insulin. The patient was taking cholesterol medicine and triglyceride medication at the time of the vaccine. On an unspecified date, the patient experienced heart attack, blood sugar little difficult to control, had to go to rehab to learn how to walk/ walking problems very far, electrolytes were almost unmeasurable, difficult time controlling my blood pressure because it stayed high all the time, short of breath, and very tired. The patient was very sick. On an unspecified date, the patient was hospitalized for nearly 3 months. The patient was in the Intensive care unit (ICU) 3 times. On the day of report, the patient was on a lot more medication than patient was when patient took the shot. Lots more heart medications, blood pressure medication. The patient was diabetic before the shot and had blood pressure problems but not near like patient took the shot and at the time of reporting. The patient later stated it was a miracle patient was alive. The patient was not as bad as patient was when first took the injection. Laboratory data (dates unspecified) included: Blood electrolytes NOS unmeasurable, Blood pressure High all the time, Blood sugar abnormal not reported, difficult to control, and Chest X-ray cardiac enzymes went up, electrolytes were almost unmeasurable. The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The outcome of the heart attack, had to go to rehab to learn how to walk/walking problems very far, electrolytes were almost unmeasurable, difficult time controlling my blood pressure because it stayed high all the time, blood sugar little difficult to control, short of breath and very tired was not reported. This report was serious (Hospitalization Caused / Prolonged, and Other Medically Important Condition). This report was associated with a product quality complaint: 90000286163. This case is a duplicate of 20230633713.  It was determined that Manufacturer Case Number 20230633713 was a duplicate of this case. All relevant information regarding this case will be submitted under Manufacturer Case Number 20230633818.; Sender's Comments: V0: 20230633818- blood sugar little difficult to control, heart attack, difficult time controlling my blood pressure because it stayed high all the time. The event has an unknown/unclear temporal relationship, is unlabeled, and has unknown scientific plausibility. There are other factors more likely to be associated with the event. Specifically: MEDICAL HISTORY. Therefore, this event is considered inconsistent with vaccine administration.  20230633818-electrolytes were almost unmeasurable. The event has an unknown/unclear temporal relationship, is unlabeled, and has unknown scientific plausibility. There is no information on any other factors potentially associated with the event. Therefore, the WHO Causality is considered indeterminate. The company causality is considered unassessable.