Wednesday, June 30, 2021

Common Heart Conditions and Their

John Macoviak, MD, MBA, spent his career performing heart transplant surgeries and pursuing cardiovascular research. Specifically, John Macoviak, MD, MBA, researched methods to treat various heart conditions, whether by improving existing processes or developing new ones. Here is a look at three common heart conditions and their treatments.

Common Heart Conditions and Their Treatments

San Diego, CA, resident John Macoviak, MD, MBA, spent his career performing heart transplant surgeries and undertaking cardiovascular research. Specifically, John Macoviak, MD, MBA, researched methods to treat various heart conditions, whether by improving existing processes or developing new ones. Here is a look at three common heart conditions and their treatments.

One common heart condition is arrhythmia, which is characterized by heartbeat irregularities. Arrhythmia manifests in multiple ways, including a patient’s heart beating faster than normal or skipping beats. Methods to treat arrhythmia include pacemakers; ablation, a procedure to block electrical signals that disrupt the normal heartbeat; and medication.

Another common type of heart problem is heart valve disease, also called valvular disease. Valvular disease encompasses four subtypes, one for each valve in the heart. Causes include narrowing of valve openings; valves failing to close completely, causing blood leakage between heart chambers; and infections attacking the heart. To treat valvular disease, doctors may prescribe changes in diet and exercise, valve replacements, or widening the valve opening.

A third common heart problem is infection. Caused by bacteria, fungi, or viruses, infections attacking the heart may cause inflammation or swelling. They may also damage the pericardium--the double-layered membrane around the heart--or the heart valves. In particular, infections attacking the heart valves may leave a patient vulnerable to one of the types of valvular disease.

Wednesday, June 23, 2021

Physicians Oppose Heart Transplants


John A. Macoviak, MD, MBA, devoted his career to performing heart transplants and researching methods to address different cardiovascular problems. Among his areas of research, John Macoviak, MD, MBA, studied the effects of heart transplant complications in patients. Heart transplants are often dramatic in the hands of the media, expensive to do, expensive to maintain and complications can keep some patients in hospital for prolonged periods. These are some of the reasons why some physicians oppose this often politically charged high profile field which is often used for publicity which can go both ways for the hospital, up and down.. Life quality and survival has been increasingly good on average, but is still a challenge to achieve for some..

One complication that may arise after heart transplant surgery is rejection, which occurs when the patient’s body recognizes that the donor heart is not its own. The patient may experience no symptoms, but in some cases, the rejection results in hypotension, which can lead to lowered blood pressure, and irregular heartbeat..

To minimize the risk of rejection, the doctors overseeing the transplant compare the donor’s antigens that trigger the production of antibodies, to the antibodies in the patient’s blood. A negative cross match indicates a decreases the risk of rejection.

Another complication that may result from heart transplant surgery is malignancy, or the development of cancer. A patient who has undergone a heart transplant is at increased risk to develop cancer because certain medications administered post-surgery also lower the patient’s immune response. The probability that a patient will develop cancer increases over time following the transplant. To assess risk, patients should receive screenings for age-appropriate cancers, like colon, prostate, or breast cancer.