AARON, J.
*593I.
INTRODUCTION
Plaintiffs Nancy Brenner, individually and in her representative capacity as representative *137of the estate of Dale Brenner, and Zach Brenner, individually,1 appeal judgments entered in favor of defendants Universal Health Services of Rancho Springs, Inc., doing business as Southwest Healthcare System-Inland Valley Medical Center (UHS) and Dr. Young H. Lee, M.D. (Dr. Lee or Lee).
Dale Brenner, Nancy's husband and Zach's father, was a patient at the Inland Valley Medical Center for approximately 23 days after he suffered a stroke a few hours after arriving at the emergency department of the hospital. He was eventually transferred to another medical facility, where he later died. Approximately a year after Dale Brenner's death, the plaintiffs sued UHS, Lee, and additional defendants, asserting causes of action for wrongful death based on medical negligence; retaliation, in violation of Health and Safety Code section 1278.5 ; and elder abuse, in violation of Welfare and Institutions Code sections 15610, et seq. Lee and UHS moved for summary judgment, which the trial court granted. The trial court thereafter entered judgments in favor of UHS and Lee.
On appeal, the plaintiffs contend that the trial court erroneously granted summary judgment in favor of UHS and Lee. We affirm the court's judgments.
*594II.
FACTUAL AND PROCEDURAL BACKGROUND
A. Factual background
On May 31, 2012, Dale Brenner (Brenner), who was 71 years old at the time, was brought to the emergency department at the Inland Valley Medical Center, accompanied by his wife, Nancy, who had been a nurse for over 30 years. Brenner was complaining about severe shortness of breath, and his blood pressure upon admission to the facility was 198/100. Brenner's medical history included diagnoses of a previous heart attack, cardiac disease, insulin dependent diabetes, chronic obstructive pulmonary disease, a previous stroke (2007), high cholesterol, hypertension, sleep apnea, renal insufficiency, deep venous thrombosis requiring anti-coagulation medication, and congestive heart failure, as well as two coronary artery bypass graft surgeries (1990 and 1991) and a tracheostomy (2007).
Several hours after Brenner arrived at the emergency department, he suffered a stroke. He was thereafter admitted to the hospital's Intensive Care Unit (ICU). Brenner was placed on tube feedings and bi-level positive airway pressure (BiPAP).
On June 3, 2012, Nancy attempted to reach the Director of Nursing and the CEO of the hospital to express her concerns regarding the sufficiency of Brenner's care in the ICU. She also contacted the hospital's case manager office to complain.
Brenner's condition began to improve, and on June 4, 2012, he was transferred to the Progressive Care Unit (PCU), which provides a lower level of care than the ICU. That same day, Nancy made a request at the nurse's station to speak to the nursing supervisor regarding Brenner's positioning and feeding tube issues that had occurred during the transfer process.
*138The following day, Nancy left messages with a physician, who she contends failed to return her calls. She also asked to speak with the nursing supervisor that evening.
Brenner was transferred back to the ICU on June 7, 2012. Dr. Timothy Killeen informed Nancy that Brenner was in septic shock and was demonstrating signs of kidney failure.
On June 9, Dr. Lee, who specializes in critical care and pulmonology, first saw Brenner. Lee was covering for Dr. Killeen over the weekend. Dr. Lee noted that Brenner was in no acute distress and that his vital signs were *595stable. By June 10, at approximately noon, however, Dr. Lee noted that Brenner's condition had "significantly deteriorated." Brenner was short of breath and more "obtunded" (i.e., less alert). Brenner required continuous BiPAP. Dr. Lee planned to intubate Brenner. Dr. Lee's notes include the fact that he had been informed by Nancy that Brenner had a history of prior difficult intubation and had previously undergone an "emergent cricothyroidotomy." Dr. Lee requested an anesthesiologist to assist with the intubation.
An anesthesiologist arrived to perform the intubation, but encountered difficulty in performing the procedure. A surgeon arrived to perform a possible emergency tracheostomy. Nancy refused to leave the room, even after having been asked to do so multiple times and being told that a sterile environment was required. The anesthesiologist was ultimately able to successfully intubate Brenner. He noted that he believed Brenner may have aspirated prior to intubation.
Later that afternoon, Brenner's diastolic blood pressure dropped. Dr. Lee ordered that a "PICC" line be placed in order to administer medication to regulate Brenner's blood pressure. After a radiologist unsuccessfully attempted to place a "PICC" line in Brenner's arm, a central line was recommended instead. At approximately 3:30 p.m., Dr. Lee began a procedure to insert a central line into Brenner's right internal jugular vein.
According to Nancy, she asked Dr. Lee why he was not using an ultrasound to determine the appropriate placement of the central line. Dr. Lee replied that it was " 'not necessary.' " He refused to perform the procedure unless Nancy waited outside of the room. Nancy left the room. Approximately 30 minutes into the procedure, Nancy asked a nurse whether something had gone wrong. She was told that there had been some problems during the procedure but that everything was fine.
According to the nursing notes, Nancy was permitted back in Brenner's room at approximately 3:50 p.m. There was a dressing over the site of the central line insertion. No bleeding was indicated from the dressing. According to Nancy, when she returned to the room, there was blood all over the bedding and she saw the beginning signs of bruising and swelling around Brenner's neck.
The following morning, June 11, a nurse noticed a lump on Brenner's neck, and she checked the central line insertion site. The nurse noted the presence of a hematoma. She paged Dr. Lee. Dr. Lee then ordered a chest x-ray, which demonstrated that the right central line catheter was located in *596the superior vena cava, which, according to an expert, was the "appropriate position," and that Brenner had not suffered a pneumothorax (i.e., a punctured lung ).
Later that morning, a nurse informed Lee that Brenner's hematoma appeared to be increasing in size. Lee told the nurse to put a pressure dressing over it. The nurse also told Lee that Nancy wanted to speak with him. He informed the nurse that he was no longer on call for Dr. Killeen. The *139nurse called Dr. Killeen, who told the nurse that he would call Nancy as soon as he could.
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AARON, J.
*593I.
INTRODUCTION
Plaintiffs Nancy Brenner, individually and in her representative capacity as representative *137of the estate of Dale Brenner, and Zach Brenner, individually,1 appeal judgments entered in favor of defendants Universal Health Services of Rancho Springs, Inc., doing business as Southwest Healthcare System-Inland Valley Medical Center (UHS) and Dr. Young H. Lee, M.D. (Dr. Lee or Lee).
Dale Brenner, Nancy's husband and Zach's father, was a patient at the Inland Valley Medical Center for approximately 23 days after he suffered a stroke a few hours after arriving at the emergency department of the hospital. He was eventually transferred to another medical facility, where he later died. Approximately a year after Dale Brenner's death, the plaintiffs sued UHS, Lee, and additional defendants, asserting causes of action for wrongful death based on medical negligence; retaliation, in violation of Health and Safety Code section 1278.5 ; and elder abuse, in violation of Welfare and Institutions Code sections 15610, et seq. Lee and UHS moved for summary judgment, which the trial court granted. The trial court thereafter entered judgments in favor of UHS and Lee.
On appeal, the plaintiffs contend that the trial court erroneously granted summary judgment in favor of UHS and Lee. We affirm the court's judgments.
*594II.
FACTUAL AND PROCEDURAL BACKGROUND
A. Factual background
On May 31, 2012, Dale Brenner (Brenner), who was 71 years old at the time, was brought to the emergency department at the Inland Valley Medical Center, accompanied by his wife, Nancy, who had been a nurse for over 30 years. Brenner was complaining about severe shortness of breath, and his blood pressure upon admission to the facility was 198/100. Brenner's medical history included diagnoses of a previous heart attack, cardiac disease, insulin dependent diabetes, chronic obstructive pulmonary disease, a previous stroke (2007), high cholesterol, hypertension, sleep apnea, renal insufficiency, deep venous thrombosis requiring anti-coagulation medication, and congestive heart failure, as well as two coronary artery bypass graft surgeries (1990 and 1991) and a tracheostomy (2007).
Several hours after Brenner arrived at the emergency department, he suffered a stroke. He was thereafter admitted to the hospital's Intensive Care Unit (ICU). Brenner was placed on tube feedings and bi-level positive airway pressure (BiPAP).
On June 3, 2012, Nancy attempted to reach the Director of Nursing and the CEO of the hospital to express her concerns regarding the sufficiency of Brenner's care in the ICU. She also contacted the hospital's case manager office to complain.
Brenner's condition began to improve, and on June 4, 2012, he was transferred to the Progressive Care Unit (PCU), which provides a lower level of care than the ICU. That same day, Nancy made a request at the nurse's station to speak to the nursing supervisor regarding Brenner's positioning and feeding tube issues that had occurred during the transfer process.
*138The following day, Nancy left messages with a physician, who she contends failed to return her calls. She also asked to speak with the nursing supervisor that evening.
Brenner was transferred back to the ICU on June 7, 2012. Dr. Timothy Killeen informed Nancy that Brenner was in septic shock and was demonstrating signs of kidney failure.
On June 9, Dr. Lee, who specializes in critical care and pulmonology, first saw Brenner. Lee was covering for Dr. Killeen over the weekend. Dr. Lee noted that Brenner was in no acute distress and that his vital signs were *595stable. By June 10, at approximately noon, however, Dr. Lee noted that Brenner's condition had "significantly deteriorated." Brenner was short of breath and more "obtunded" (i.e., less alert). Brenner required continuous BiPAP. Dr. Lee planned to intubate Brenner. Dr. Lee's notes include the fact that he had been informed by Nancy that Brenner had a history of prior difficult intubation and had previously undergone an "emergent cricothyroidotomy." Dr. Lee requested an anesthesiologist to assist with the intubation.
An anesthesiologist arrived to perform the intubation, but encountered difficulty in performing the procedure. A surgeon arrived to perform a possible emergency tracheostomy. Nancy refused to leave the room, even after having been asked to do so multiple times and being told that a sterile environment was required. The anesthesiologist was ultimately able to successfully intubate Brenner. He noted that he believed Brenner may have aspirated prior to intubation.
Later that afternoon, Brenner's diastolic blood pressure dropped. Dr. Lee ordered that a "PICC" line be placed in order to administer medication to regulate Brenner's blood pressure. After a radiologist unsuccessfully attempted to place a "PICC" line in Brenner's arm, a central line was recommended instead. At approximately 3:30 p.m., Dr. Lee began a procedure to insert a central line into Brenner's right internal jugular vein.
According to Nancy, she asked Dr. Lee why he was not using an ultrasound to determine the appropriate placement of the central line. Dr. Lee replied that it was " 'not necessary.' " He refused to perform the procedure unless Nancy waited outside of the room. Nancy left the room. Approximately 30 minutes into the procedure, Nancy asked a nurse whether something had gone wrong. She was told that there had been some problems during the procedure but that everything was fine.
According to the nursing notes, Nancy was permitted back in Brenner's room at approximately 3:50 p.m. There was a dressing over the site of the central line insertion. No bleeding was indicated from the dressing. According to Nancy, when she returned to the room, there was blood all over the bedding and she saw the beginning signs of bruising and swelling around Brenner's neck.
The following morning, June 11, a nurse noticed a lump on Brenner's neck, and she checked the central line insertion site. The nurse noted the presence of a hematoma. She paged Dr. Lee. Dr. Lee then ordered a chest x-ray, which demonstrated that the right central line catheter was located in *596the superior vena cava, which, according to an expert, was the "appropriate position," and that Brenner had not suffered a pneumothorax (i.e., a punctured lung ).
Later that morning, a nurse informed Lee that Brenner's hematoma appeared to be increasing in size. Lee told the nurse to put a pressure dressing over it. The nurse also told Lee that Nancy wanted to speak with him. He informed the nurse that he was no longer on call for Dr. Killeen. The *139nurse called Dr. Killeen, who told the nurse that he would call Nancy as soon as he could.
Also on June 11, 2012, a vascular surgeon evaluated Brennan's neck hematoma. A CT scan of the area showed the existence of a soft tissue hematoma along the sternocleidomastoid muscle. The CT scan demonstrated that the hematoma had no demonstrable effect on the carotid arteries and showed no indication that the carotid artery had been injured. The surgeon believed that any active bleeding in the area had stopped, and noted that he would consider operating to drain the hematoma if it continued to grow or began to impose pressure on Brenner's airway.
Brenner was treated by Dr. Killeen for another 11 days. At some point, Nancy requested that Brenner be transferred to Scripps Green Hospital. He was transferred there on June 22, 2012.
Prior to Brenner's transfer to Scripps Green Hospital, during the final week he remained at Inland Valley Medical Center, Nancy met with the hospital's CEO and others regarding her concerns about Brenner's medical treatment.
After the transfer to Scripps Green Hospital, a cardiothoracic surgeon evaluated Brenner for a potential tracheostomy, given Brenner's respiratory failure due to severe pulmonary disease. Without a tracheostomy, Brenner was facing the potential of being intubated for a prolonged period. Later, however, the surgeon noted that if Brenner's family wanted him to undergo aggressive care, he would have to be evaluated for laser therapy at UCSD for treatment of subglottic stenosis (narrowing of the windpipe) before a tracheostomy could be performed.
An MRI revealed that a significant portion of Brenner's brain tissue had died. Any surgical intervention as to an occlusion in his left carotid artery, even if successful, would not have provided Brenner with a decent quality of life. Brenner's treating physicians recommended to Nancy and Zach that they remove Brenner from life support. They agreed to do so and to have Brenner transferred to hospice care. Brenner died on June 29, 2012. Brenner's death certificate identifies "ACUTE RESPIRATORY FAILURE" as the primary *597cause of death. The death certificate also lists as contributing causes "NON TRAUMATIC RIGHT NECK HEMATOMA" and "CEREBROVASCULAR ACCIDENT."
B. Procedural background
Approximately a year after Brenner died, the plaintiffs filed a complaint against UHS, Lee, Dr. Nizar Salek, and Dr. Timothy Killeen.2 In the original complaint, the plaintiffs asserted causes of action for (1) elder abuse, in violation of Welfare and Institutions Code section 15610, et seq., as to all defendants; (2) retaliation, in violation of Health and Safety Code section 1278.5, as to all defendants; and (3) "[w]rongful [d]eath/ [m]edical [n]egligence," as to all defendants. In response to a demurrer filed by Lee, the plaintiffs amended the complaint to allege the same causes of action, but to limit the elder abuse claim to UHS, alone.
Lee filed a second demurrer and a motion to strike the plaintiffs' requests for predeath pain and suffering and punitive damages. UHS also moved to strike the request for punitive damages from the first amended complaint. The trial court overruled Lee's second demurrer, but struck from the complaint the plaintiffs' request for damages in the form of predeath *140pain and suffering, as well as the request for punitive damages.
The plaintiffs filed a motion for leave to file a second amended complaint in order to add a request for punitive damages, pursuant to Code of Civil Procedure section 425.13.
In late January, 2015, during the time period during which the parties were briefing the plaintiffs' motion for leave to file a second amended complaint, Lee filed a motion for summary judgment. The same day, UHS filed a motion for summary judgment. The motions were set for separate hearings to occur in mid-to-late April 2015.
On March 16, 2015, the court entered an order denying the motion for leave to amend to add a request for punitive damages.
The court held a hearing on Lee's motion for summary judgment in April 2015. The trial court overruled all of the plaintiffs' evidentiary objections. The trial court concluded that summary adjudication in favor of Lee was appropriate with respect to the retaliation claim. The court also determined that the plaintiffs' expert's declaration was legally insufficient to establish a triable issue of material fact with respect to causation as to the wrongful death claim.
*598In addition, the court concluded that Lee was entitled to summary adjudication with respect to the claim for retaliation under Health and Safety Code section 1278.5.
The court held a hearing on UHS's motion for summary judgment the following week. The court overruled all of the parties' evidentiary objections, and then turned to the merits of the summary judgment motion. The court took the matter under submission at the conclusion of the hearing and ultimately granted the motion in full.
The trial court entered judgment in favor of Lee on May 29, 2015. The trial court entered judgment in favor of UHS on June 5, 2015.
On September 4, 2015, the Court of Appeal, Fourth District, Division Two, entered an order deeming Nancy's premature notice of appeal to have been a notice of appeal filed following the entry of judgments. The court also construed the notice to include Zach, individually, as an appellant and to indicate Nancy's status in appealing both as an individual, as well as in her representative capacity as representative of Brenner's estate. The case was subsequently transferred to the Court of Appeal, Fourth District, Division One on September 13, 2016, per an order of the Supreme Court.3
*599*141III.
DISCUSSION
A. The trial court properly granted summary judgment in favor of the respondents
1. Summary judgment standards
"Summary judgment and summary adjudication provide courts with a mechanism to cut through the parties' pleadings in order to determine whether, despite their allegations, trial is in fact necessary to resolve their dispute. [Citations.] A defendant moving for summary judgment or summary adjudication may demonstrate that the plaintiff's cause of action has no merit by showing that (1) one or more elements of the cause of action cannot be established, or (2) there is a complete defense to that cause of action." (Collin v. CalPortland Co . (2014) 228 Cal.App.4th 582, 587, 176 Cal.Rptr.3d 279 (Collin ).)
Generally, "the party moving for summary judgment bears an initial burden of production to make a prima facie showing of the nonexistence of any triable issue of material fact; if [that party] carries [this] burden of production, [the moving party] causes a shift, and the opposing party is then subjected to a burden of production of his own to make a prima facie showing of the existence of a triable issue of material fact." (Aguilar v. Atlantic Richfield Co. (2001) 25 Cal.4th 826, 850, 107 Cal.Rptr.2d 841, 24 P.3d 493.) In moving for summary judgment, "all that the defendant need do is to show that the plaintiff cannot establish at least one element of the cause of action-for example, that the plaintiff cannot prove element X ." (Id. at p. 853, 107 Cal.Rptr.2d 841, 24 P.3d 493.) "A defendant moving for summary judgment or summary adjudication need not conclusively negate an element of the plaintiff's cause of action. [Citations.] Instead, the defendant may show through factually devoid discovery responses that the plaintiff does not possess and cannot reasonably obtain needed evidence." (Collin , supra , 228 Cal.App.4th at p. 587, 176 Cal.Rptr.3d 279.)
"After the defendant meets its threshold burden [to demonstrate that a cause of action has no merit], the burden shifts to the plaintiff to present evidence showing that a triable issue of one or more material facts exists as to that cause of action or affirmative defense. [Citations.] The plaintiff may not simply rely on the allegations of its pleadings but, instead, must set forth the specific facts showing the existence of a triable issue of material fact. [Citation.] A triable issue of material fact exists if, and only if, the evidence reasonably permits the trier of fact to find the contested fact in favor of the *600plaintiff in accordance with the applicable standard of proof." (Collin , supra , 228 Cal.App.4th at p. 588, 176 Cal.Rptr.3d 279.)
"On appeal, the reviewing court makes ' "an independent assessment of the correctness of the trial court's ruling [regarding summary judgment], applying the same legal standard as the trial court in determining whether there are any genuine issues of material fact or whether the moving party is entitled to judgment as a matter of law." ' " (Hesperia Citizens for Responsible Development v. City of Hesperia (2007) 151 Cal.App.4th 653, 658, 60 Cal.Rptr.3d 124.) Our task is to determine *142whether a triable issue of material fact exists. (Collin , supra , 228 Cal.App.4th at p. 588, 176 Cal.Rptr.3d 279.) In independently examining the record on appeal "to determine whether triable issues of material fact exist," we " 'consider[ ] all the evidence set forth in the moving and opposition papers except that to which objections were made and sustained.' " (Ambriz v. Kelegian (2007) 146 Cal.App.4th 1519, 1530, 53 Cal.Rptr.3d 700.)
2. Summary adjudication of the claim for wrongful death as a result of medical negligence, as to both UHS and Lee