OPINION

The Estate of Florence Aptekman appeals an order of the United States District Court for the Eastern District of *621 Pennsylvania granting summary judgment to defendants Ashton Hall Nursing Home and Beatrice Stenta. Appellants filed a corporate negligence claim against Ashton Hall, as well as claims for negligence, wrongful death and a “survival action” against Ashton Hall and its supervisor, Beatrice Stenta. For the reasons discussed below, we will affirm.

Florence Aptekman was a resident of Ashton Hall, a long-term care nursing facility. On November 8, 2000, Louis Aptekman, the decedent’s husband, visited her at the home. While they were eating in the dining room, Ms. Aptekman collapsed and appeared to be going into cardiac arrest. Staff members at the home came to Ms. Aptekman’s aid, saw that she appeared to be in grave distress, and called for an ambulance from Regional Medical Transport. Shortly thereafter, Ashton Hall staff members called 911, and a City of Philadelphia ambulance was dispatched. Appellants claim that there was a delay in the dispatch of the city ambulance. Ms. Aptekman died on the scene before she could be transported to a hospital. Although Appellants assume otherwise, it appears that Stenta was not in the building on the day of Ms. Aptekman’s demise. Appellants did not produce any evidence that she was on the premises, and Stenta submitted an affidavit and copy of her time card to the contrary. Appellants did not submit expert reports or any kind of evidence regarding the cause of Ms. Aptekman’s death, nor did they submit any expert reports regarding Ashton Hall’s duty and alleged breach.

Ms. Aptekman’s two sons brought this action on behalf of her Estate. Appellants sued the City of Philadelphia and its dispatcher, April Lowman, under 42 U.S.C. §§ 1988 and 1988 for violation of Ms. Aptekman’s Fourteenth Amendment rights based on a failure to dispatch an ambulance in a timely manner. Appellants also pursued state claims of wrongful death and a “survival action” against these defendants. The City of Philadelphia and Low-man moved for summary judgment on the basis that Appellants could not show that the City or Lowman had violated any constitutional right of Ms. Aptekman’s. They further asserted that Appellants’ state law claims were barred by the Political Subdivision Tort Claims Act. See 43 Pa. Cons. Stat. § 8541.

Appellants claimed corporate negligence, negligence, wrongful death and a “survival action” against Ashton Hall and negligence against Stenta. Ashton Hall and Stenta moved for summary judgment on the theory that Appellants failed to bring forth an issue of material fact because they failed to submit expert reports on causation with respect to Ms. Aptekman’s demise. Ashton Hall also sought summary judgment on the basis that Appellants had failed to produce any expert reports regarding the nature of Ashton Hall’s duty of care and whether there had been a breach of that duty. Stenta also moved for summary judgment on the basis that Appellants had faded to show the existence of an issue of material fact regarding her presence or absence at Ashton Hall on the day Ms. Aptekman died. The District Court granted summary judgment in favor of all defendants. Ms. Aptekman’s Estate appealed.

We have jurisdiction pursuant to 28 U.S.C. § 1291. Our review is plenary. See Guardian Life Ins. Co. of Am. v. Goduti-Moore, 229 F.3d 212, 213 (3d Cir. 2000). On appeal, Appellants argues that summary judgment was inappropriate because there existed disputed issues of material fact. Particularly, they argue that there was an obvious causal connection between the defendants’ actions and Ms. Aptekman’s death and that there was were *622 easily discernable duties of care that Ash-ton Hall breached. ***

Summary judgment is appropriate when there is no genuine issue of material fact, and the moving party is entitled to judgment as a matter of law. See Fed.R.Civ.P. 56(c); Celotex Corp. v. Catrett, 477 U.S. 317, 322-23,106 S.Ct. 2548, 91 L.Ed.2d 265 (1986).

As the District Court properly noted, under all the asserted theories of liability, the Appellants must show that Ashton Hall’s or Stenta’s alleged actions were both a factual cause and a proximate cause of Ms. Aptekman’s death. Although Appellants claim that the connection is plain, expert testimony as to the cause of death is usually necessary to prove causation. See Mitzelfelt v. Kamrin, 526 Pa. 54, 62, 584 A.2d 888 (1990). This is because the workings of the human body with respect to pain and injury are outside the ken of the average layperson. See Hamil v. Bashline, 481 Pa. 256, 267, 392 A.2d 1280 (1978).

It is possible that no medical assistance, however swiftly rendered, would have prevented Ms. Aptekman’s death. Where the causal nexus is not patently obvious, and there is no expert opinion, a factfinder could not simply infer a causal connection. See Florig v. Sears, Roebuck & Co., 388 Pa. 419, 424,130 A.2d 445 (1957). Because Appellant’s failed to produce any expert testimony that any of the defendants’ actions caused, increased the likelihood of, or hastened Ms. Aptekman’s demise, the District Court properly concluded that there was no issue of material fact with respect to causation for any of the above causes of action. Additionally, Appellants failed to produce anything but speculation to controvert Stenta’s evidence that she was not present at Ashton Hall on the date in question. They, therefore, failed to show that there was an issue of material fact as to any alleged causal nexus for Stenta. Summary judgment was, therefore, appropriate. Because we agree that summary judgment was appropriate on this basis, we need not address Appellees’ additional arguments.

For the reasons stated above, we will affirm the judgment of the District Court.