You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Refractory cardiogenic shock and complete heart block after verapamil SR and metoprolol treatment. A case report. A seventy-eight-year-old woman presented with complete heart block and refractory hypotension two days after a therapeutic dose of sustained-release verapamil with concomitant use of metoprolol. The patient continued to remain hypotensive with complete heart block, even with multiple uses of intravenous atropine as well as high doses of pressor agents such as dopamine and dobutamine. However, shortly after the use of intravenous calcium chloride, the refractory hypotension and complete heart block resolved.
{"Chemical": ["metoprolol", "calcium chloride", "verapamil", "dopamine", "atropine", "dobutamine"], "Disease": ["cardiogenic shock", "heart block", "hypotensive", "hypotension"]}