Acute Cholecystitis May Mimic or Coexists With Cardiovascular Problems
Acute cholecystitis is condition where there is inflammation of gallbladder and it can sometimes mimic heart disease and this can lead to mismanagement of the condition. However no recent scientific study has been done to look at this association and anecdotal references are mentioned in surgical literature. A new publication by Michishige Ozeki and others from the Department of Cardiology, Osaka Medical College has studied this association and the outcome. They conducted a study to determine the number of cases of acute cholecystitis being misdiagnosed as a cardiac event or being accompanied by a cardiac pathology.
In a retrospective report they studied 5552 inpatients records and identified 16 patients who had been diagnosed with acute cholecystitis after being admitted into the department of cardiology during the four-year period from June 2010 - June 2014.
‘Cardiologist who admit patient with ECG & biomarker changes of heart disease to the ICU, must remember that acute cholecystitis too can give rise to similar changes and requires a different management strategy.’
The 16 patients were divided into two groups:
Group 1 - It comprised of 5 patients who were initially diagnosed with a cardiac event and were later found to have acute cholecystitis. Out of the 5 patients 4 came in with the complaint of chest oppression and were given an initial diagnosis of acute coronary syndrome while the remaining 1 patient came with complaint of loss of consciousness and was thought to have Adams Stokes Syndrome. Investigations showed that 2 of these patients had ECG changes, like T wave inversion and ST segment depression, which mimicked myocardial infarction, while the other 3 showed elevated biomarker levels H-FABP (Heart-type fatty acid binding protein) for myocardial injury. The final diagnosis was reached by symptoms of fever and abdominal pain, lab data suggestive of inflammation, negative results on coronary Angiography and positive results on imaging studies, all indicative of acute cholecystitis.
Group 2 - It comprised of 11 patients who showed both cardiac disease and acute cholecystitis, 2 of them having been diagnosed at the time of admission and 9 developing it de-novo. Aortic dissection was the most common coexisting condition involving 5 patients. They came with complaints of chest/back pain with fever (or) abdominal pain (or) Dyspnea. Some of them were diagnosed with acute cholecystitis due to an incidental finding on abdominal CT.
Treatment with antibiotics helped resolve the issue in 2 cases while the rest needed gall bladder resection.
Cardiologist who admit patient with ECG & biomarker changes of heart disease to the ICU, must remember that acute cholecystitis too can give rise to similar changes and requires a different management strategy. According to the researchers this condition has been confused with cardiac events on various occasions due to unusual ECG changes and biomarker levels. The explanation of this association is as follows:
- There has been an indication that prolonged ICU stay of patients of congestive heart failure may increase the risk of cholecystitis.
- Biomarker H-FABP also increases in pulmonary embolism and hepatic injury.
- ECG changes may occur due to:
- Distension of bile duct may decrease coronary flow.
- There might be a vagus mediated coronary vasospasm.
- There might be dehydration and electrolyte imbalance due to inflammation.
Adams-Stokes Syndrome is a conduction defect in the heart where either Mobitz II or 3rd Degree Heart Block is complicated by ventricular asystoles or sinoatrial disease. This leads to recurrent syncopal attacks.
Congestive heart failure (CHF) is a condition in which the heart fails to pump sufficient amount of blood and thus leads to inadequate circulation. Mild to moderate congestion is either exercise induced or appears only in stress conditions. Severe CHF refers to failure at rest and is almost always fatal. There are various reasons for congestive cardiac failure:
- There may be decreased contractility of the ventricles.
- There may be obstruction to the ventricular outflow (Pressure overload) due to conditions like aortic stenosis.
- There may be ventricular inflow obstruction due to conditions like mitral stenosis.
- There might be volume overload on the ventricles leading to inefficient pumping and increased demand.
- Arrhythmias may cause irregular heart beat which lead to improper functioning of the heart.
- Diastolic dysfunction may occur wherein the ventricles might not be able to pump sufficient blood in conditions like constrictive pericarditis.
Cardiac troponins elevation and ECG data were also suggestive of ischemic coronary heart disease in some cases. Ischemic heart disease refers to a condition in which there is insufficient blood supply to the heart leading to a vicious cycle of improper functioning and even less blood supply.
The research still has many limitations. Abdominal CT scan or ultrasound scanning are not routinely done for all cardiac patients hence clinically silent cases of acute cholecystitis may have been missed. The cases which have developed cholecystitis after discharge have not been recorded. Also, it is a retrospective study with a small sample size and the surveillance of the hepatobiliary system has been incomplete.
The research done thus provides a data for further research which can help doctors tackle a potential threat of misdiagnosis relating to cardiac diseases. This will help in early intervention and proper treatment accordingly.
References:
1. http://bmcresnotes.biomedcentral.com/articles/10.1186/s13104-015-1790-8
Davidson's Principles & Practice of Medicine - 21st Edition
Source: Medindia
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