Cases of cardiac arrest in which it is still recommended include high blood potassium, low blood calcium such as may occur following blood transfusions, and calcium channel blocker overdose. There is the potential that general use could worsen outcomes. If calcium is used, calcium chloride is generally the recommended form. Side effects
Calcium gluconate side effects include nausea, constipation, and upset stomach. Rapid intravenous injections of calcium gluconate may cause hypercalcaemia, which can result in vasodilation, cardiac arrhythmias, decreased blood pressure, and bradycardia. Extravasation of calcium gluconate can lead to cellulitis. Intramuscular injections may lead to local necrosis and abscess formation.It is also reported that this form of calcium increases renal plasma flow, urine production, sodium excretion, glomerular filtration rate, and prostaglandin E2 and F1-alpha levels. Society and culture
Shortages of medical calcium gluconate were reported in November 2012 and November 2015 in the United States. Historically, intravenous calcium gluconate was used as an antidote for black widow spider envenomation, often in conjunction with muscle relaxants. This therapy, however, has since been shown to be ineffective. See also
Calcium lactate gluconate

References
External links
"Calcium gluconate". Drug Information Portal. U.S. National Library of Medicine.
Fibroadenomas are benign breast tumours characterized by an admixture of stromal and epithelial tissue. Breasts are made of lobules (milk producing glands) and ducts (tubes that carry the milk to the nipple). These are surrounded by glandular, fibrous and fatty tissues. Fibroadenomas develop from the lobules. The glandular tissue and ducts grow over the lobule to form a solid lump. Since both fibroadenomas, and breast lumps as a sign of breast cancer can appear similar, it is recommended to perform ultrasound analyses and possibly tissue sampling with subsequent histopathologic analysis in order to make a proper diagnosis. Unlike typical lumps from breast cancer, fibroadenomas are easy to move, with clearly defined edges.Fibroadenomas are sometimes called breast mice or a breast mouse owing to their high mobility in the breast. Signs and symptoms
Fibroadenomas are benign (not harmful in effect) tumours of the breast, most often present in women in their 20s and 30s. Clinically, fibroadenomas are usually solid breast lumps that are:
•	Painless•	Firm or rubbery•	Mobile•	Solitary-round with distinct, smooth borders
People who have a simple fibroadenoma have a slightly increased risk of developing malignant (harmful) breast cancer. Complex fibroadenomas may increase the risk of breast cancer.In the male breast, fibroepithelial tumors are very rare, and are mostly phyllodes tumors. Exceptionally rare case reports exist of fibroadenomas in the male breast, however these cases may be associated with antiandrogen treatment. Cause
The cause of fibroadenoma is unknown (idiopathic).