Aspects of the subject matter described in this disclosure can be implemented in electronic medical devices, wireless gateway devices, and remote database systems in a network environment where wireless connections are made between at least an electronic device and a wireless gateway device, and between the wireless gateway device or an access point and a remote database system. The electronic medical device, the wireless gateway device, or the remote database system may be configured to identify a data communication loss based on at least a mismatch of a confirmation acknowledgement attribute between two or more nodes in the network environment. Upon identifying the data communication loss, a notification can be provided to an entity such as a user so that data communication can be restored.