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Peripheral Heart Action Training Overview Essay

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Updated: May 13th, 2022

Purpose, evaluation and critique

PHA is an acronym that stands for the peripheral heart action training which deals with the analysis of the heart by approaching it through the body blood circuitry. This form of training became popular in the 1960s and was meant to ensure that blood circulation is uniform and occurs throughout the body. The training begins by attending to the heart’s smaller muscles before extending to the larger muscles in the rest of the body.

I totally agree with the author since this is a medically friendly way of controlling the pulmonary system as well as a deadly precautionary action against circulatory problems. However, I think that this process is rather selective as it has no room for weak patients (Dirksen, 2011).

The author describes thromboembolism as a lung disease that affects the parenchymal cells of the lungs. He presents the results of a research initially carried out to find out how different patients respond to extreme vasodilator challenge with EPO, CCB and ITSS.

The different patients were exposed to baseline, EPO, CCB and sildenafil 25 mg conditions during the experiment. The activities performed on the patients include; performing a chest x-ray, letting the patients walk approximately six minutes in a room with normal oxygen concentration, carrying out tests on the patients overnight, and testing the functionality of their pulmonary and lung air supply. This was then supplemented by other practices such as echocardiographic tests. The results of these tests were then collected, analyzed and recorded.

It was established from the data that the baseline condition exposes patients to the highest pulmonary pressure and pulmonary artery pressure. Patients exposed to sildenafil 25mg condition recorded the lowest pulmonary artery pressure while those exposed to CCB recorded the lowest pulmonary pressure (Burger & Murali, 2008). The cardiac response was higher among patients under the influence of sildenafil 25mg and lowest in the baseline condition while the baseline condition recorded the highest pulmonary vascular resistance while sildenafil 25mg recorded the lowest.

This data is useful to nurses as it indicates different ways in which the human heart and the entire circulatory system respond when exposed to different conditions which can then be used to offer prescriptions and safety precautions to patients. Doctors may also find it useful in advising the patients with respect to places they should visit and those they should not and how frequently they should visit the selected places (Burger & Murali, 2008). However, I find a similar weakness as in PHA which is its mechanical nature.

Hemodynamic response

Purpose, evaluation and critique

A second experiment was carried out on patients with vasoreactivity. The main objective of this research was to find out how they react to echocardiographic exposure and exercise in follow-up. Different WHO classes of patients under test were instructed to have a six minute walk and the tested parameters were recorded in a table as the one shown below (Burger & Murali, 2008).

Time WHO class 6 minute walk distance Right ventricular systolic pressure Mean pulmonary artery pressure Right ventricular changes Therapy
O months III 532 51 37 FX None
2 months II 651 41 31 FX Calcium channel blocker
6 months II 646 54 37 NL Calcium channel blocker
8 months I 670 41 29 NL Calcium channel blocker

Assessing the acute vasoreactivity of a patient is of great importance in two ways; one, it can be used to determine those patients who respond antagonistically to calcium channel as well as well as carrying out an assessment to the patients’ general prognosis. This condition is very scarce among patients with idiopathic PAH as it can be found in only about 20% of this group. The percentage of those with vasoreactivity is even smaller among patients with PAH (Burger & Murali, 2008).

Nifedipine therapy

Purpose, evaluation and critique

When performing a test aimed at revealing acute vasoreactivity, agents whose actions are of short term such as nitrogen (vi) oxide, intravenous epoproctanol or adenosine are normally preferred for use. It is required that measurements of hemodynamic parameters be performed first before starting the actual testing process. The fact that calcium channel blocker treatment finds acute vasoreactivity does not give an assurance that it is a hundred percent efficient. In fact, only about half of adult patients with PAH have been able to receive successful treatments using this method.

Relevance to nursing

Therefore, it is advisable to perform a hydrodynamic test before opting for lasting treatment using the agents prescribed in this method. This is a very important aspect especially to the nursing fraternity as it directs on the facts and procedures that ought to be followed when carrying out any heart related treatments. It also gives the precautions that should be followed when conducting PHA training for the purpose of avoiding any incidents or accidents occurring during the exercise due to heart related accidents that are fatal. The process is as good as the others although I think it is not convenient when there are many patients to handle (Barst, 2008).

The survival curve under calcium channel blocker

Evaluation and critique

The given survival curve is loaded with information indicating the ability of different patients to survive at a constant response to calcium channel blocker that they may have been exposed to. It is also observed that patients with idiopathic PAH have very high survival rates.


Barst, R. (2008). Pulmonary Arterial Hypertension: Diagnosis and Evidence-Based Treatment. Chichester, UK: John Wiley & Sons.

Burger C, D., & Murali S. (2008).The Vasoreactive Patient: Diagnosis, Treatment and Follow-up. Advances in Pulmonary Hypertension, 6 (1), 176-179.

Dirksen, S. (2011). Clinical companion to Medical-surgical nursing: Assessment and management of clinical problems. St. Louis, MO: Elsevier/Mosby.

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